Datasheet TDA9725-V2 Datasheet (Philips)

DATA SH EET

Product specification
Supersedes data of 1995 Dec 06
File under Integrated Circuits, IC02

1996 Oct 14

INTEGRATED CIRCUITS

TDA9725

Y/C automatic adjustment
processor (VHS standard)

1996 Oct 14 2

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

FEATURES

• Automatic adjustment by control loops

• Integrated filters

• Simple SVHS playback

• Colour sequence correction for long-play still mode

• Automatic gain control for FM.

GENERAL DESCRIPTION

The TDA9725 is an integrated circuit for chrominance and
luminance processing (record and playback) in VHS tape
recorders for PAL, SECAM/ME and NTSC systems
(4.43 MHz playback only) with internal filter and without
adjustments.

QUICK REFERENCE DATA

ORDERING INFORMATION

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

CC

supply voltage 4.5 5.0 5.5 V

I

CC

supply current VCC= 5 V; playback 140 170 200 mA

V

i(p-p)

video input voltage; CVBS signal
(peak-to-peak value)

0.6 1.0 2.0 V

V

oREC(p-p)

video output record voltage
(peak-to-peak value)

video/sync = 7/3 2.03 2.14 2.25 V

V

oPB(p-p)

video output playback voltage
(peak-to-peak value)

video/sync = 7/3;
nominal FM signal

2.03 2.14 2.25 V

V

iFM(p-p)

FM input voltage (peak-to-peak value) FM AGC active 63 200 632 mV

V

oFM(p-p)

FM output voltage (peak-to-peak value) RL=1kΩ 0.7 0.9 1.1 V

V

CFT(p-p)

chrominance input voltage (+FM) from tape
(peak-to-peak value)

11 110 310 mV

V

CTT(p-p)

chrominance output voltage to tape
(peak-to-peak value)

467 660 932 mV

T

stg

storage temperature −25 − +150 °C

T

amb

operating ambient temperature −20 − +70 °C

TYPE

NUMBER

PACKAGE

NAME DESCRIPTION VERSION

TDA9725 SDIP52 plastic shrink dual in-line package; 52 leads (600 mil) SOT247-1

1996 Oct 14 3

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

BLOCK DIAGRAM

Fig.1 Block diagram (continued in Fig.2).

(1) Low leakage current.
All capacitors for loop filter ±10%; all other capacitors+10%/−50%; all resistors ±5%; all inductors ±10%; unless otherwise specified.

handbook, full pagewidth

1HDL

CCD

CLAMP

1

CLAMP

2

CCD
AGC

SYNC

SEPARATOR

HSS

AGC

DETECTOR

CLPA

AGC

LPF

SCL

NLDE

CLPB

W/DC

NLE
DTE

CLAMP

3

YLPF

NOISE

CLIP

Y/C

MIXER

CHARACTER

INSERT

2.5 dB

YNR

PROCESSOR

NOISE

CANCELLER

1

DEVIATION

CONTROL

FM DEMODULATOR

SUBLPF

DOUBLE
LIMITER

FM

AGC

DROP-OUT
DETECTOR

ENVELOPE
DETECTOR

f

0

PROCESSOR

DEVIATION/PLAYBACK

DETECTOR

YNR

MIXER



10 
µF

1.3
kΩ

47
nF

1 µF

VTC

VFC

LPNC

C

CCD

C

SS

C

AGC

V

CC(Y)

GND(Y)

50 kΩ

22 nF

YNR

SYNC

CVBSI

CVBSO

CHI

22
µH

10
µF

0.1
µF

0.33
µF

0.01
µF

4.7 µF 4.7 µF

A

50
kΩ

50 kΩ

1 kΩ

REC

PB

DOP

PICTURE

EDIT

EDIT

EDIT

25 kΩ

50 kΩ

to pin 6

SQPB

GATE

DOP

REC

PB

ME

SQPB

MODULATOR

to BPF 4.43

52 51 50 49 48 47 46 45 44 43 42 41 40

REC

PB

PB

REC

REC

PB

PB

PB

pin 14

HIGH

1.5 kΩ1.5 kΩ

1 kΩ

470 Ω

270 Ω

680 pF

5%

peaking

0.1
µF

0.1 µF

4.7 
µF

22
nF

V

CC(FM)

C

F0E

CDEV

C

CLP3

C

FMA

FMO

PTR

FMI

1 nF

5%

NFB

PCTL

TP2

SQPB

to CLP3

(1)

12 34 5 6 7 8 9 10 11 12 13 14

1.6 V

MDEBMDECMEO

TDA9725

MGB694

1996 Oct 14 4

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

handbook, full pagewidth

COMB

DRIVER

BURST
DOWN

BURST UP

BPF

4.43

CK/FPC

DETECTOR

FREQUENCY

DETECTOR

DIVIDER

SUBMIXER

LPF

PHI/PB

VXO

RECORD

AFC

LPF
630

BPF

630

15
µH

0.1
µF

10 nF

COMB

-15 dB

LPF

f

H/2

C

*

BALANCED

MIXER

ACC

TIMER

MUTE

MUTE

: 40

4 PHI : 4SLD

VCO

VXO

X2

3rd

LOCK

ACC

DETECTOR

f

H/2

f

sc

f

sc

2 f

sc

from

4 PHI

HSS

PBCI

PBCO

AGCKP1

CFI CDO

TP1

1.3
kΩ

CF892

270 Ω

50 kΩ

8.0
kΩ

50 kΩ

22 kΩ

120

kΩ

680

Ω

4.7 kΩ

4

2

3

SNP

BMI ACCO

10 nF

GND(C)

V

CC(C)

V

CC(C)

V

CC(C)

CFT

CTT

f

H/2

39 38 37 36 35 34 33 32 31 30 29 28 27

CK
H BLANK

SEC

PB

REC

CK

PB

PB

CK

PB/SP

NAP

REC

REC

RECPB/LP

from pin 43

REC

REC

REC
PB

SEC
MUTE

PB

FPC

to BM

ELS

CK

0.1
µF

0.1 µF
(1)

1 µF

(1)

6.8
µH

(1)

1 µF

FCO

BGP ROT

LFVXO LFVCO

XTALI XTALO

TEW 8H

470

pF

47

nF

33
pF

4.43619
MHz

15 16 17 18 19 20 21 22 23 24 25 26

TDA9725

10 nF

MGB695

A

Fig.2 Block diagram (continued from Fig.1).

(1) Low leakage current.

1996 Oct 14 5

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

Table 1 Explanation of symbols in Figs 1 and 2

PINNING

SYMBOL DESCRIPTION

AGCKP1 mode with shortened key pulse for AGC
BGP burst gate pulse
DOP dropout pulse
f

H

line frequency

f

sc

subcarrier frequency (4.433619 MHz)
HDL CCD charged coupled device with 1H delay
NLDE non-linear de-emphasis
NLEDTE non-linear emphasis/detail enhancer
ROT rotary pulse
VXO voltage controlled XTAL oscillator
YNR vertical noise reduction
YLPF luminance low-pass filter

SYMBOL PIN DESCRIPTION

PCTL 1 picture control/edit switch input
CDEV 2 deviation/playback AGC detector input
TP2 3 test pin 2/correlation detector output
NFB

4

negative feedback input of main
emphasis

MEO

5

main emphasis output/white
clip/modulator input/SQPB selector

C

CLP3

6 capacitor for clamp 3

C

F0E

7

storage capacitor for f0 processor

(record)/envelope detector (playback)
MDEC 8 main de-emphasis output
MDEB 9 main de-emphasis and peaking output
V

CC(FM)

10 FM supply voltage
FMO 11 FM output
PTR 12 switch (PB/TRICK/REC)
FMI 13 playback FM input
C

FMA

14 storage capacitor for FM AGC
ELS

15

PAL: switch (LP C*/LP/SP); NTSC:

switch (EP/LP/SP)
CK 16 colour killer terminal
FCO 17 frequency correction output
BGP 18 burst gate pulse output

Note

1. It is recommended that this pin should be connected to
ground.

ROT 19 rotary pulse input
LFVXO 20 loop filter VXO
LFVCO 21 loop filter VCO
n.c. 22 not connected; note 1
f

sc

23 fsc output
XTALI 24 VXO input from crystal
XTALO 25 VXO output to crystal
2f

sc

26 2fsc output
f

H/2

27 f

H/2

output
CTT 28 chrominance output to tape
V

CC(C)

29 chrominance supply voltage
CFT 30 playback chrominance input from tape
GND(C) 31 chrominance ground
ACCO 32 automatic chrominance control output
BMI 33 balanced mixer input
SNP 34 switch (SECAM/NTSC/PAL)
CDO 35 comb driver output
CFI 36 chrominance input from comb filter
TP1 37 test pin 1; note 1
PBCO 38 playback chrominance output
PBCI 39 playback chrominance input
V

CC(Y)

40 luminance supply voltage
CVBSO 41 CVBS output
CHI 42 character insertion input (artificial

sync/black/white/through)
CVBSI 43 CVBS input
C

AGC

44 AGC detector capacitor
SYNC 45 sync separator push-pull output
C

SS

46 sync separator detector capacitor
YNR 47 YNR switch
VFC 48 video input from 1HDL CCD
VTC 49 video output to 1HDL CCD
C

CCD

50 storage capacitor for CCD AGC level
GND(Y) 51 luminance ground
LPNC 52 low-pass filter noise canceller

SYMBOL PIN DESCRIPTION

1996 Oct 14 6

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

Fig.3 Pin configuration.

handbook, halfpage

TDA9725

MGB693

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19

20
21
22
23
24
25
26

52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27

PCTL

CDEV

TP2

NFB

MEO

C

CLP3
C

F0E

MDEC
MDEB

V

CC(FM)

FMO

PTR

FMI

C

FMA

ELS

CK
FCO
BGP
ROT

LFVXO

LFVCO

n.c.

f

sc

XTALI

XTALO

2f

sc

LPNC
GND(Y)
C

CCD

VTC
VFC
YNR
C

SS

SYNC
C

AGC

CVBSI
CHI
CVBSO
V

CC(Y)

PBCI
PBCO
TP1
CFI
CDO
SNP
BMI
ACCO
GND(C)
CFT
V

CC(C)

CTT
f

H/2

1996 Oct 14 7

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

FUNCTIONAL DESCRIPTION
Record (REC)/electric to electric (EE) mode

L

UMINANCE

From input pin 43 the CVBS signal is fed via the automatic
gain control (AGC) and subclamp (SCL) to the output
pin 41. Instead of the controlled and clamped CVBS signal
it is also possible to switch (dependent on the level at
pin 42) white, black or sync-level to this pin. To eliminate
chrominance parts the CVBS signal is fed to the luminance
low-pass filter (YLPF) and to the sync separator stage.
The sync signal is available at pin 45. The signal is also fed
via vertical emphasis non-linear emphasis (NLE),
deviation control stage, main emphasis and white-dark clip
to the FM modulator. The FM signal is available at pin 11.

C

HROMINANCE

The chrominance signal is selected out of CVBS (from
pin 43) in BPF 4.43 MHz (band-pass filter) and controlled
in automatic chrominance control (ACC).
The chrominance signal is mixed with 5.06 MHz to
627 kHz and via LPF 627 kHz to the output pin 30.

Playback (PB)/video to video (VV) mode

LUMINANCE
The FM signal is fed via FM AGC and double limiter to the

controlled FM demodulator. After demodulation and
filtering in sub low-pass filter (SUBLPF) main
de-emphasis, YLPF and non-linear de-emphasis the
signal is fed to the vertical noise reduction (YNR) and in
parallel to the sync separator. The chrominance signal is
added in the Y/C mixer. The complete CVBS signal is
available at pin 41.

C

HROMINANCE

The 627 kHz chrominance signal coming from tape via
BPF 627 kHz and field ACC to the balanced mixer. Mixed
with 5.06 MHz the 4.43 MHz chrominance signal is fed via
comb driver stage to the external comb filter (pin 35) and
via internal conjugated complex (C*) stage and internal AC
coupling to the luminance part.

Record and playback

In both modes record (REC) and playback (PB) the

5.06 MHz mixer frequency is produced by the 20.24 MHz
voltage controlled oscillator (VCO) and a divide-by-four.

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

Note

1. Charge device model class B: discharging a 200 pF capacitor via a 0 Ω series resistor.

THERMAL CHARACTERISTICS

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

CC

supply voltage 0 − 6.0 V

V

I

input voltage at pin 22 0 − 1.6 V

V

n

input voltage on all other pins 0 − V

CC

V

I

I

input current at pin 22 −−10 mA

P

tot

total power dissipation −−1250 mW

T

stg

storage temperature −25 − +150 °C

T

amb

operating ambient temperature −20 − +70 °C

V

es

electrostatic handling for all pins note 1 −300 − +300 V

SYMBOL PARAMETER VALUE UNIT

R

th j-a

thermal resistance from junction to ambient in free air 43 K/W

1996 Oct 14 8

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

CHARACTERISTICS

VCC=5V; T

amb

= +25 °C and typical application (see Figs 1 and 2), unless otherwise specified.
Luminance part: All amplitudes are VBS peak-to-peak values, unless otherwise specified.
Chrominance part: All amplitudes for P AL and NTSC are red values with 75% saturation and chrominance-to-burst ratio
of 2.2 : 1, unless otherwise specified.

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supplies

V

CC

supply voltage 4.5 5.0 5.5 V

I

PB

current consumption
(I10+I29+I40)

playback mode 140 170 200 mA

I

REC

current consumption
(I10+I29+I40)

record mode 125 155 185 mA

FM SUPPLY (PIN 10)
I

PB

DC playback current − 22 − mA

I

REC

DC record current − 12 − mA
CHROMINANCE SUPPLY (PIN 29)
I

CC(C)

DC supply current playback mode − 85 − mA

record mode − 85 − mA

L

UMINANCE SUPPLY (PIN 40)

I

PB

DC playback current − 63 − mA
I

REC

DC record current − 57 − mA

Picture control/edit switch input (pin 1)

V

1

DC input voltage pin open-circuit − 1.6 − V

sharp picture 0 − 1.6 V
soft picture 1.6 − 3.2 V
edit mode 4.1 − 5.0 V

Deviation/playback AGC detector input (pin 2)

V

2

detection voltage 1.8 2.5 3.2 V

Test pin 2/correlation detector output (pin 3)

V

OH

HIGH level output voltage correlation of Y signal;

pin 37 LOW; RL≥ 10 kΩ

1.5 2.1 3.0 V

V

OL

LOW level output voltage non-correlation of Y signal − 0.1 0.5 V

1996 Oct 14 9

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

Negative feedback input of main emphasis (pin 4; open-base) and main emphasis
output/white-clip/modulator/SQPB selector (pin 5)

F

EEDBACK LOOP CLOSED (PIN 4 CONNECTED TO PIN 5; MAIN EMPHASIS OFF)

V

SY

DC voltage level sync tip − 1.9 − V
V

oREC(p-p)

record output voltage level;

standard output level

(peak-to-peak value)

video/sync = 7/3;
∆VCC= ±0.25 V;
T

amb

= −10 to +70 °C

450 500 550 mV

t

FRAMEDET

time for correcting carrier

interleave relationship to

half picture

HIGH during half picture 1; note 1 −−200 ms

NON-LINEAR EMPHASIS/DETAIL ENHANCER; notes 2 and 3
RD1 response D1 −20 dB; f

i

= 500 kHz; SP; NORM 1.7 2.7 3.7 dB

RD2 response D2 −20 dB; f

i

= 2 MHz; SP; NORM 6.0 7.5 9.0 dB

RS1 response S1 −20 dB; f

i

= 500 kHz; SP; EDIT 1.0 1.7 2.4 dB

RS1 response S2 −20 dB; f

i

= 2 MHz; SP; EDIT 4.5 5.5 6.5 dB

RL1 response L1 −20 dB; f

i

= 500 kHz; LP 3.1 4.4 5.7 dB

RL2 response L2 −20 dB; f

i

= 2 MHz; LP 7.0 9.0 11 dB

RL3 response L3 0 dB; f

i

= 2 MHz; LP 1.6 2.3 3.0 dB
VERTICAL EMPHASIS
PL1 peak level 1 −30 dB recursive; note 4 3.5 4.3 5.3 dB

PL2 peak level 2 −20 dB recursive; note 4 3.5 4.0 4.5 dB
PL3 peak level 3 0 dB recursive 0 0.4 1.0 dB

F

EEDBACK LOOP NORMAL APPLICATION

DCL dark-clip level 50 60 70 %
WCL white-clip level 180 187 194 %
V

5

SQPB input voltage playback mode 4.0 −−V

Record storage capacitor for f

0

processor and playback storage capacitor for envelope detector (pin 7)

V

I

DC voltage record mode − 1.2 − V

V

NOR

DC voltage of normal mode playback mode;

V

i

= 350 mV (p-p); pin 14 HIGH

2.3 3.3 4.0 V

V

OFF

DC voltage of dropout
correction (DOC) off mode

playback mode 0 − 1.3 V

V

NS

DC voltage at no input
signal

playback mode 1.1 1.6 2.1 V

G

Eon

envelope detector
switch-on level
(dropout active)

playback mode;
0dB=Vi= 350 mV (p-p);
fi= 3.8 MHz; pin 14 HIGH

−13 −10 −7dB

t

env

envelope detector operating
time

Ci= 0.1 µF 380 500 620 µs

SYMBOL PARAMETER CONDITIONS MIN. TYP . MAX. UNIT

1996 Oct 14 10

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

Main de-emphasis output (pin 8; open collector)

V

8

DC output voltage fi= 3.8 MHz at VHS 2.9 3.4 3.9 V

V

VID(p-p)

video output voltage level
(peak-to-peak value)

f

DEV

= 1 MHz 230 300 370 mV

Φ

DEM

demodulator sensitivity VHS mode 0.23 0.3 0.37 V/MHz

SQPB mode 0.14 0.19 0.24 V/MHz

LIN1 demodulator linearity 1 VHS mode 0.97 1.0 1.03

LIN2 demodulator linearity 2 SQPB mode 0.90 1.0 1.07

Main de-emphasis and peaking output (pin 9)

V

9

DC output voltage fi= 3.8 MHz at VHS 1.1 1.6 2.1 V

V

VR(p-p)

reverse video voltage level
(peak-to-peak value)

230 300 370 mV

α

DEM

suppression of
demodulated carrier

40 −−dB

FM output (pin 11)

V

11

DC mean value output
voltage

RL=1kΩ 2.9 3.2 3.5 V

V

11(p-p)

output voltage level
(peak-to-peak value)

RL=1kΩ 0.7 0.9 1.1 V

f

sync

sync output frequency V5=V

sync

; V43= 0 dB 3.75 3.8 3.85 MHz

∆f

sync

stability of sync output
frequency

∆VCC= ±0.25 V
or T

amb

= −10 to +70 °C

−20 − +20 kHz

f

dev

frequency deviation V5=V

white

; V43= 0 dB;

video/sync = 7/3

0.95 1.0 1.05 MHz

∆f

dev

stability of frequency
deviation

∆VCC= ±0.25 V
or T

amb

= −10 to +70 °C

−20 − +20 kHz

∆f

rot

carrier interleave frequency rotary pulse (pin 19) HIGH/LOW;

at SP and LP

6.8 7.8 8.8 kHz

H

2

second harmonic distortion fi= 3.8 MHz −−50 −42 dB

L

mod

modulator linearity 0.95 1.00 1.05

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V05 MHz()V

0

4MHz()–

V

0

4 MHz()V

0

3MHz()–

--------------------------------------------------------------------

V

0

9 MHz()V

0

7MHz()–

V

0

7 MHz()V

0

5MHz()–

--------------------------------------------------------------------

1996 Oct 14 11

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

Switch: PB/TRICK/REC (pin 12)

R

I

internal resistance to
ground

40 50 60 kΩ

V

PB

voltage range for active
playback mode

3.5 − 5V

V

TR

voltage range for active
trick mode

1.75 − 3V

V

REC

voltage range for active
record mode

0 − 1.25 V

Playback FM input (pin 13)

V

13

DC voltage 1.7 2.2 2.7 V

V

i(p-p)

input voltage level
(peak-to-peak value)

FM AGC active 63 200 632 mV
FM AGC not active; pin 14 HIGH − 350 − mV

V

iBO(p-p)

boundary input voltage
(peak-to-peak value)

fi= 3.8 MHz; pin 14 HIGH 10 − 1000 mV

G

DOC

DOC on level Vi= 350 mV (p-p); fi= 3.8 MHz;

pins 7 and 14 HIGH

−18 −15 −12 dB

∆G

hys

DOC on/off hysteresis Vi= 350 mV (p-p); fi= 3.8 MHz;

pins 7 and 14 HIGH

135dB

G

Eon

envelope detector
switch-on level

playback mode;
0dB=Vi= 350 mV (p-p);
fi= 3.8 MHz; pin 14 HIGH

−13 −10 −7dB

Storage capacitor for FM AGC (pin 14; playback mode)

V

14

DC voltage AGC on 2.6 3.1 3.6 V
DC input voltage AGC off 4.3 − 5.0 V

Switch LP C*/LP/SP at PAL; EP/LP/SP at NTSC (pin 15)

R

I

internal resistance to
ground

40 50 60 kΩ

V

C

input voltage for active C*
(conjugated complex
chrominance signal)

PAL 3.5 − 5V

V

E

input voltage for active EP NTSC 3.5 − 5V

V

L

input voltage for active LP 1.75 − 3V

V

S

input voltage for active SP 0 − 1.25 V

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

1996 Oct 14 12

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

Colour killer terminal (pin 16)

V

NC

DC voltage black and white luminance input without

chrominance

1.6 1.8 2.0 V

V

16

input voltage forced colour off 0 − 1.5 V

forced colour on 3.0 − 4.3 V

V

th

threshold voltage colour on 2.0 2.2 2.4 V

CK

th

colour killer threshold relative to nominal input;

V30= 110 mV (p-p)

−25 −30 −35 dB

CK

hys

colour killer hysteresis relative to nominal input;

V30= 110 mV (p-p)

135dB

Frequency correction output (pin 17)

V

17

operating range 0.8 − 4.2 V

I

oSLD

SLD output current SLD ±12 ±17 ±22 µA

t

SLD

SLD pulse duration SLD − 1 − t

H

f

SLH

start of detection at positive
frequency deviation
(referenced to fsc+N×fH at
pin 35; −I17)

SLD/PAL 1.0 2.0 3.0 kHz
SLD/NTSC 2.0 4.0 5.0 kHz

f

SLL

start of detection at
negative frequency
deviation (referenced to
fsc+N×fH at pin 35; +I17)

SLD/PAL −3.0 −2.0 −1.0 kHz
SLD/NTSC −5.0 −4.0 −2.0 kHz

I

ofDET

output current of frequency
detector

FDET ±12 ±17 ±22 µA

t

fDET

frequency detector pulse
duration

FDET 68 73 78 µs

f

fDETH

start of detection at positive
frequency deviation
(referenced to fsc+N×fH at
pin 35; −I17)

record mode 40 70 100 kHz

f

fDETL

start of detection at
negative frequency
deviation (referenced to
fsc+N×fH at pin 35; +I17)

record mode −100 −70 −40 kHz

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

1996 Oct 14 13

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

Burst gate pulse output (or sandcastle output; pin 18); note 5
t

BGP

burst gate pulse duration 4.2 4.45 4.7 µs

t

BGS

start of burst gate beyond
sync start at pin 45

3.25 3.5 3.75 µs

V

O(L)

LOW level DC output
voltage

inactive; I18=1mA −−0.7 V
inactive; I

18

=0mA −−0.5 V

V

O(M)

medium level DC output
voltage

horizontal blanking;
10 kΩ connected to V

CC

2.2 2.6 3.0 V

V

O(H)

HIGH level DC output
voltage

BGP; I18= −0.4 mA 4.0 4.4 − V
BGP; I

18

=0mA 4.6 −−V

t

VBL(start)

vertical blanking of BGP
start

referring to first equalisation
pulse in mid of line

− 0 − t

H

t

VBL(stop)

vertical blanking of BGP
stop

referring to rotary transition 23 −−t

H

referring to last equalisation pulse
in mid of line

1 −−t

H

Rotary pulse input (pin 19; open PNP base)

V

C2

voltage for −90° phase
rotation

channel 2 0 − 2.25 V

V

C1

voltage for non-rotation
(PAL) or +90° rotation
(NTSC)

channel 1 2.75 − 5V

Loop filter VXO (pin 20; record mode)

V

20

DC voltage 1 2.4 3.6 V

Φ

VXO

VXO sensitivity −1.6 −1.2 −0.8 Hz/mV

f

PI(U)

upper pull-in frequency 0.6 1.0 1.8 kHz

f

PI(L)

lower pull-in frequency −1.8 −1.0 −0.6 kHz

Loop filter VCO (pin 21)

V

21

DC voltage 1.3 2.1 2.9 V

Φ

VCO

VCO sensitivity fH related; record mode −34 −38 −42 kHz/V

f

sc

related; playback mode −1.3 −1.5 −1.7 MHz/V

f

sc

output (pin 23)

V

23

DC output voltage 1.8 2.3 2.8 V

V

o(p-p)

output signal voltage
(peak-to-peak value)

no load 500 600 700 mV

H

2

second harmonic distortion −−−25 dB

H

3

third harmonic distortion −−−20 dB
VXO input from crystal (pin 24); note 6
V

24

DC voltage 2.6 3.0 3.4 V

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

1996 Oct 14 14

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

VXO output to crystal (pin 25)

V

25

DC output voltage 2.9 3.3 3.7 V
∆f

osc

deviation of oscillator

frequency

due to internal spread;
playback mode

−50 − +50 Hz

video signal without burst;
record mode

−1.4 − +1.4 kHz

no video signal; record mode −100 − +100 Hz
V

CC

= 4.75 to 5.25 V;

T

amb

= −10 to +70 °C;

playback mode

−100 − +100 Hz

2f

sc

output (pin 26)

V

26

DC output voltage 4.5 4.9 − V
V

o

output signal voltage 1.2 kΩ connected to VCC and

emitter follower (EF)

40 55 70 mV

tuned LC circuit to V

CC

and EF 400 550 700 mV

H

2

second harmonic distortion tuned LC circuit (Q > 20) and EF −−−30 dB

f

H/2

output; coupled to burst sequence (pin 27)

V

O(L)

LOW level DC output

voltage

burst phase = +135°−−0.5 V

V

O(H)

HIGH level DC output

voltage

burst phase = −135° 4.5 −−V

V

NTSC4.43

input level for forced

NTSC 4.43 mode (no NAP)

NTSC; playback mode −−1.5 V

Chrominance output to tape (pin 28); see Table 2
V

28

DC output voltage colour on 2.1 2.4 2.7 V

colour killer active − 0.1 0.3 V

V

o(p-p)

chrominance output signal

voltage (N × fH)

(peak-to-peak value)

record mode; PAL 467 660 932 mV

G

UP

SECAM-fOR burst related

to PAL burst

SECAM 0.2 1.0 1.8 dB

H

2

second harmonic distortion V33=0dB −−−40 dB

V

33

=+6dB −−−35 dB

H

3

third harmonic distortion V33=0dB −−−40 dB

V

33

=+6dB −−−35 dB

α

CK

colour killer suppression 40 −−dB

Playback chrominance input from tape (pin 30)

V

30

DC voltage 1.7 2.2 2.7 V
V

i(p-p)

input signal voltage

(peak-to-peak value)

chrominance + FM −−310 mV
chrominance 11 110 220 mV

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

1996 Oct 14 15

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

ACC output (pin 32); see Table 5
V

32

DC output voltage 1.75 2.25 2.75 V
V

o(p-p)

controlled output signal

voltage

(peak-to-peak value)

Vi= 0 dB; record mode 370 460 550 mV
V

i

= 0 dB; playback mode; PAL;

−15 dB comb filter

350 440 530 mV

∆G

o

deviation of output signal Vi= −15 dB/+6 dB;

record and playback modes

−1.0 − +1.0 dB

H

2

second harmonic distortion nominal input and output signal −−−40 dB
H

3

third harmonic distortion nominal input and output signal −−−40 dB

Balanced mixer input (pin 33)

V

33

DC voltage 1.6 1.9 2.2 V
V

i(p-p)

nominal input signal voltage

(peak-to-peak value)

− 440 − mV

Switch SECAM/NTSC/PAL (pin 34)

R

I

internal resistance to

ground

40 50 60 kΩ

V

i

input voltage active SECAM mode 3.5 − 5V

active NTSC mode 1.75 − 3V

active PAL mode 0 − 1.25 V
Comb driver output (pin 35); see Tables 3, 4 and 10
V

35

DC output voltage record and playback modes 2.0 2.5 3.0 V

V

o(p-p)

output signal voltage
(peak-to-peak value)

playback mode; NTSC;

−10 dB comb filter

304 380 456 mV

playback mode; PAL/SECAM;

−15 dB comb filter

540 675 810 mV

H

2

second harmonic distortion playback mode; 0 dB −−−40 dB

H

3

third harmonic distortion playback mode; 0 dB −−−40 dB

∆G

BD(S)

burst down playback mode; NTSC; SP −6.0 −5.0 −4.0 dB

∆G

BD(E)

burst down playback mode; NTSC; EP −5.0 −4.0 −3.0 dB

G

SECid

gain of output signal for
SECAM identification

record mode (ACC is not active)

from pin 43

− 3.0 − dB

Chrominance input from comb filter (pin 36)

V

GL

DC voltage for glass comb AC coupled 3.2 4.0 4.8 V

V

CCD

DC voltage for CCD comb DC coupled 0 − 1.5 V

V

i(p-p)

input signal voltage
(peak-to-peak value)

PAL; NTSC − 120 − mV

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

1996 Oct 14 16

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

Playback chrominance output (pin 38; sync blanking is always active); see Table 6
V

38

DC output voltage 1.1 1.6 2.1 V

V

o(p-p)

output signal voltage
(peak-to-peak value)

V30= 110 mV (p-p) 270 325 420 mV

H

2

second harmonic distortion V30= 110 mV (p-p) −−−40 dB

α

CK

colour killer/pilot burst
suppression

colour killer or sync blanking

interval

40 −−dB

∆V

C*

output amplitude deviation C to C*; V36= 120 mV (p-p) −1.5 0 +1.5 dB

∆ϕ

C*

output phase deviation C to C* or NAP line n to n + 1 −15 0 +15 °

∆ϕ

NAP

phase for NAP burst NAP burst to −(B − Y) axis ±30 ±45 ±60 °

α

2fsc

2fscsuppression C*; V36= 120 mV (p-p) 35 −−dB

α

3fsc

3fsc suppression C*; V36= 120 mV (p-p) 18 25 − dB

Playback chrominance input (pin 39)

V

39

DC voltage 1.7 2.0 2.3 V

V

i(p-p)

input voltage
(peak-to-peak value)

− 325 − mV

V

th

threshold level of AGCKP1
(no reaction on copy guard)

record mode 2.6 3.0 3.4 V

CVBS output (pin 41); see Table 7
V

41

DC output voltage sync tip; RL= 2.1 kΩ 0.9 1.05 1.2 V
RECORD MODE
V

oREC(p-p)

record output voltage

(standard output level)

(peak-to-peak value)

video/sync = 7/3; RL= 2.1 kΩ 2.03 2.14 2.25 V

∆V

oREC(p-p)

record output voltage level

stability

(peak-to-peak value)

∆VCC= ±0.25 V or
T

amb

= −10 to +70 °C

−40 − +40 mV

V

o(p-p)

compressed sync output

voltage (200 IRE)

(peak-to-peak value)

video/sync = 7.0/1.5 2.13 2.32 2.52 V

G

CON

control characteristic of

AGC

V43= 0.5 to 2.0 V (p-p) 0 0.2 1.0 dB

∆V

CG

VHS standard

(signal amplitude for

copy guard tapes)

100% = typical output level;
copy guard 7 lines/field

35 − 48 %

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

1996 Oct 14 17

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

PLAYBACK MODE
V

oPB(p-p)

playback output voltage

(peak-to-peak value)

video/sync = 7/3; nominal FM
signal; RL= 2.1 kΩ; test: EE
without ME, MDE, peaking, YNR

2.03 2.14 2.25 V

∆V

oPB(p-p)

playback output voltage

level stability

(peak-to-peak value)

∆VCC= ±0.25 V or
T

amb

= −10 to +70 °C

−40 − +40 mV

V

NC

white noise clip level black-to-white = 100%; TRICK 115 135 150 %
∆V

os

offset voltage between

DOC mode and normal

mode

−25 − +25 mV

α

ct

DOC switch crosstalk 0 dB = 2.0 V (p-p); fi= 1 MHz −−−40 dB
t

att

attack time of switching to

DOC mode from normal

mode

− 0.7 1.0 µs

t

rec

recovery time of switching

to normal mode from DOC

mode

4.0 5.0 6.0 µs

V

o(p-p)

chrominance output

voltage

(peak-to-peak value)

V30= 110 mV (p-p) 1.0 1.2 1.4 V

∆G

CHROM

chrominance frequency

response

Vi=V39; fi=5to1MHz −2 − +2 dB

VERTICAL SYNCHRONIZATION PULSE/CHARACTER INSERT (RECORD AND PLAYBACK MODES)
∆V

ST

artificial sync tip level

voltage offset

V42= 0 to 5 V; playback mode −50 0 +50 mV

∆V

bl(p-p)

artificial black level voltage

(peak-to-peak value)

V42= 5 to 3 V 0.58 0.68 0.78 V

∆V

wh(p-p)

artificial white level voltage

(peak-to-peak value)

V42= 5 to 2 V 1.7 1.9 2.05 V

α

VIDEO

suppression of video at

character insert

40 −−dB

NON-LINEAR DE-EMPHASIS (PLAYBACK MODE); note 7
S1 response S1 −20 dB; f

i

= 500 kHz; SP −2.9 −1.9 −0.9 dB

S2 response S2 −20 dB; f

i

= 2 MHz; SP −6.5 −5.0 −3.5 dB

L1 response L1 −20 dB; f

i

= 500 kHz; LP −6.5 −4.8 −3.0 dB

L2 response L2 −20 dB; f

i

= 2 MHz; LP −10.2 −8.4 −6.7 dB

L3 response L3 0 dB; f

i

= 2 MHz; LP −4.8 −3.2 −1.8 dB
NOISE CANCELLER (PLAYBACK MODE); note 8
NC1 response NC1 −30 dB; f

i

= 1 MHz; NORMAL −5.5 −3.5 −1.4 dB

NC2 response NC2 −30 dB; f

i

= 2 MHz; NORMAL −15.0 −11.6 −8.0 dB

NC4 response NC4 0 dB; f

i

= 2 MHz; NORMAL −1.3 −0.3 +0.7 dB
NCED response NCEDIT −30 dB; f

i

= 2 MHz; EDIT −5.0 −3.4 −1.8 dB

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

1996 Oct 14 18

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

LINE NOISE CANCELLER (YNR WEAK; PLAYBACK MODE); note 9
LNC1 depth 1 −30 dB non-recursive −7.0 −5.5 −4.5 dB

LNC2 depth 2 −20 dB non-recursive −4.3 −3.3 −2.3 dB
LNC3 depth 3 0 dB non-recursive −1.0 −0.2 0 dB

V

ERTICAL NOISE CANCELLER (YNR STRONG; PLAYBACK MODE); note 9

VNC1 depth 1 −30 dB recursive −10.0 −8.5 −7.5 dB
VNC2 depth 2 −20 dB recursive −9.0 −7.5 −6.5 dB
VNC3 depth 3 0 dB recursive −1.8 −0.4 0 dB

P

ICTURE CONTROL; (note 10)

PC1 response 1 (sharp) V

1

=0V; fi= 0.5 MHz 0 0.5 1.0 dB

PC2 response 2 (sharp) V

1

=0V; fi= 2 MHz 3.7 4.7 5.7 dB

PC3 response 3 (soft) V

1

= 3.2 V; fi= 0.5 MHz −2.3 −1.3 −0.8 dB

PC4 response 4 (soft) V

1

= 3.2 V; fi= 2 MHz −6.8 −5.8 −4.8 dB

PC5 response 5 (centre) pin 1 open-circuit or > 4.1 V;

f

i

= 2 MHz

−0.5 +0.0 +0.5 dB

t

d

delay time pin 1 open-circuit; fi= 0.1 MHz 185 210 235 ns

Character insert (artificial sync/black/white/through; pin 42)

R

i

internal resistance to
ground

V42=0to1.0V 405060kΩ

V

AS

input voltage for artificial
sync (inserts sync level)

4.0 − 5.0 V

V

AB

input voltage for artificial
black (inserts black level)

2.75 − 3.5 V

V

AW

input voltage for artificial
white (inserts white level)

1.5 − 2.25 V

V

THR

input voltage for through
mode

0 − 1.0 V

CVBS input (pin 43)

V

43

DC voltage 2.35 2.75 3.15 V

V

i(p-p)

CVBS input voltage
(peak-to-peak value)

0.3 1.0 2.0 V

AGC detector (pin 44)

V

44

detector voltage V43= 1 V (p-p) 1.8 2.5 3.2 V

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

1996 Oct 14 19

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

Sync separator push-pull output (pin 45)

V

O(H)

HIGH level output voltage RL=2kΩto ground 4.5 −−V

V

O(L)

LOW level output voltage RL=10kΩto V

CC

−−0.3 V

t

dFE

front edge delay time referenced to sync start pin 48;

note 11

600 750 900 ns

t

dBE

back edge delay time referenced to sync end pin 48;

note 11

100 350 600 ns

Φ

sync

input sensitivity
(slicing level for sync)

sync-to-black = 100% 26 33 40 %

Sync separator detector (pin 46)

V

46

detector voltage 2.3 − 3.3 V
YNR switch (pin 47); see Table 11
R

I

internal resistance to

ground

40 50 60 kΩ

V

47

input voltage YNR off mode 3.5 − 5.0 V

YNR1 mode 1.75 − 3.0 V
YNR2 mode 0 − 1.25 V

Video input from 1HDL CCD (pin 48)

V

48

DC voltage 1.5 1.9 2.3 V
V

i(p-p)

input voltage for constant

output signal at pin 49

(peak-to-peak value)

178 283 449 mV

Video output to 1HDL CCD (pin 49)

V

oST

sync tip output voltage 0.9 1.4 1.9 V
V

o(p-p)

output voltage

(peak-to-peak value)

CCD with −3 dB (record mode) 380 420 460 mV

Storage capacitor for CCD level AGC (pin 50)

V

50

DC voltage 1.4 2.1 2.8 V
G

CCD

CCD gain control range 036dB

Low-pass filter input for noise canceller (pin 52)

V

52

DC voltage 1.0 1.2 1.4 V

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

1996 Oct 14 20

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

Notes to the characteristics

1. 50 Hz; rotary transition 8 to 4 lines beyond vertical pulse.

2. Test mode; YNR off; main emphasis off; V50= 1.5 V (minimum gain).

3. Input: V48= 143 mV sync and 0 dB = V48= 333 mV picture. Output: 0 dB = V5 picture at ≤50 kHz and given input
level.

4. Input: V43= 300 mV sync and 0 dB = V43= 700 mV picture. Output: 0 dB = V5 picture at 1, 2 and 3 × fH and given
input level.

5. Burst gate pulse output with no external components; sandcastle output with 10 kΩ resistor to VCC.

6. Crystal characteristics: TEW 8H:
f

nom

= 4.433619 MHz ± 15 × 10−6; RS≤ 90 Ω; C1= 11 fF; L1= 117.14791 mH; C0= 2.6 pF.

7. Input: V8= 90 mV sync and 0 dB = V8= 210 mV picture. Output: 0 dB = V41 at ≤50 kHz and given input level.
Noise canceller off; picture control centre; YNR off; measured with YLPF.

8. Input: V8= 90 mV sync and 0 dB = V8= 210 mV picture. Output: 0 dB = V41 at 100 kHz and given input level.
Picture control centre; NLDE off; YNR off. Pin 52: R = 1.3 kΩ; C = 47 nF (parasitic capacitance: 5 pF from
pin 52 to GND).

9. Input: V8= 90 mV sync and 0 dB = V8= 210 mV picture. Output: 0 dB = V41 at 1, 2 and 3 × fH and given input level.
Picture control at centre; NC off; NLDE off.

10. Input: V8= 90 mV sync and V8= 67 mV picture. Output: 0 dB = V41 at 100 kHz referring to YNRMIX signal at pin 3
of the same frequency. Noise canceller off; YNR off; NLDE off.

11. Input: V48= 143 mV sync; V50= 1.5 V; dropout or test mode forced DOC.

1996 Oct 14 21

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

CHROMINANCE FILTER CHARACTERISTICS
Table 2 Low-pass filter 630 kHz; frequency response pin 33 to pin 28

Table 3 Band-pass filter 4.43 MHz at record mode; frequency response pin 43 to pin 35

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

PAL; NTSC/REC

∆G1 frequency response 1 G(1 MHz)/G(0.2 MHz) −4 −3 −2dB
∆G2 frequency response 2 G(1.5 MHz)/G(0.2 MHz) −9 −7 −5dB
∆G3 frequency response 3 G(2 MHz)/G(0.2 MHz) −10 −14 −18 dB
∆G4 frequency response 4 G(3 MHz)/G(0.2 MHz) −−−25 dB
∆G5 frequency response 5 G(4.43 MHz)/G(0.2 MHz) −−−40 dB
∆G7 frequency response 7 G(9.5 MHz)/G(0.2 MHz) −−−35 dB

t

d

group delay 1 fi= 0.63 MHz 295 335 375 ns

SECAM; REC

∆G2 frequency response (2) G(1.5 MHz)/G(0.2 MHz) −5 −3 −1dB

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

PAL; NTSC/REC

∆G1 frequency response 1 G(<2.7 MHz)/G(4.43 MHz) −−−22 dB
∆G2 frequency response 2 G(2.7 MHz)/G(4.43 MHz) −−−30 dB
∆G3 frequency response 3 G(3.93 MHz)/G(4.43 MHz) −3.8 −2.8 −1.8 dB
∆G4 frequency response 4 G(4.93 MHz)/G(4.43 MHz) −2.5 −1.5 −0.5 dB
∆G5 frequency response 5 G(6.2 MHz)/G(4.43 MHz) −−−30 dB
∆G6 frequency response 6 G(>6.2 MHz)/G(4.43 MHz) −−−15 dB

t

d

group delay 1 fi= 4.43 MHz 410 450 490 ns

SECAM; REC

∆G7 frequency response 7 G(5.7 MHz)/G(4.43 MHz) −−−25 dB

1996 Oct 14 22

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

Table 4 Band-pass filter 4.43 MHz at playback mode; frequency response pin 33 to pin 35 (test mode)

Table 5 Band-pass filter 630 kHz; frequency response pin 30 to pin 32 (test mode)

Table 6 Low-pass filter C*; frequency response pin 36 to pin 38

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

PAL; NTSC/PB

∆G1 frequency response 1 G(<2.7 MHz)/G(4.43 MHz) −−−20 dB
∆G2 frequency response 2 G(2.9 MHz)/G(4.43 MHz) −−−30 dB
∆G3 frequency response 3 G(3.93 MHz)/G(4.43 MHz) −3.7 −2.7 −1.7 dB
∆G4 frequency response 4 G(4.93 MHz)/G(4.43 MHz) −3.9 −2.9 −1.9 dB
∆G5 frequency response 5 G(5.7 MHz)/G(4.43 MHz) −−30 −25 dB
∆G6 frequency response 6 G(6 MHz)/G(4.43 MHz) −−−22 dB
∆G7 frequency response 7 G(>6 MHz)/G(4.43 MHz) −−−15 dB

t

d

group delay 1 fi= 4.43 MHz 445 485 525 ns

SECAM; PB

∆G8 frequency response 8 G(1.9 MHz)/G(4.43 MHz) −−30 −22 dB
∆G9 frequency response 9 G(5.5 MHz)/G(4.43 MHz) −−30 −22 dB

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

PB

∆G1 frequency response 1 G(<100 Hz)/G(630 kHz) −−−20 dB
∆G2 frequency response 2 G(100 kHz)/G(630 kHz) −7 −5 −3dB
∆G3 frequency response 3 G(930 kHz)/G(630 kHz) −3 −2 −1dB
∆G4 frequency response 4 G(1.5 MHz)/G(630 kHz) −−15 −10 dB
∆G5 frequency response 5 G(2.3 MHz)/G(630 kHz) −−−40 dB
∆G6 frequency response 6 G(>2.4 MHz)/G(630 kHz) −−−33 dB

t

d

group delay 1 fi= 630 kHz; pin 36 normal 710 750 790 ns

∆t

d

group delay 4 difference V36=4to1V −250 −210 −170 ns

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

PB; C

∆G1 frequency response 1 G(5 MHz)/G(2 MHz) 0 −1.5 −3dB
∆G2 frequency response 2 G(13.3 MHz)/G(2 MHz) −18 −25 − dB
∆G3 frequency response 3 G(>13.3 MHz)/G(2 MHz) −18 −−dB

t

d

group delay 1 fi= 4.43 MHz 65 95 125 ns

1996 Oct 14 23

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

LUMINANCE FILTER CHARACTERISTICS
Table 7 Low-pass filter 4.43 MHz; frequency response pin 43 to pin 3 (test mode)

Table 8 Sub-low-pass filter; frequency response from FM demodulator to pin 9

Sensitivity
Table 9 Sensitivity of PB APC (multiplication factor for phase detector sensitivity)

Notes

1. No alternating reference for APC loop.

2. Comb filter is inside the APC loop.

Burst down logic
Table 10 Burst down logic

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

REC

∆G1 frequency response 1 G(2 MHz)/G(0.2 MHz) −1.0 +0.5 +1.5 dB
∆G2 frequency response 2 G(3 MHz)/G(0.2 MHz) −2.5 −1.0 +0.5 dB
∆G3 frequency response 3 G(4.43 MHz)/G(0.2 MHz) −−40 −30 dB

t

d

group delay 1 fi= 0.2 MHz 710 750 790 ns

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

∆G1 frequency response 1 G(3 MHz)/G(0.2 MHz) −4.5 −20 dB
∆G2 frequency response 2 G(6 MHz)/G(0.2 MHz) −−25 −15 dB

PROGRAM

PAL NTSC/NAP NTSC4.4

SP LP SP LP EP SP LP EP

NORM 2 1

(2)

2

(1)(2)

2

(1)(2)

2

(1)(2)

4

(1)

2

(1)(2)

2

(1)(2)

TRICK 2 1

(1)(2)

2

(1)(2)

2

(1)(2)

2

(1)(2)

2

(1)(2)

2

(1)(2)

2

(1)(2)

MODE SYSTEM BURST DOWN

Playback NTSC SP ON (−5.0 dB)

LP OFF

EP ON (−4.0 dB)
PAL OFF
SECAM OFF

1996 Oct 14 24

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

OPERATION MODE
Table 11 Operation mode (PART 1)

For PAL RECORD, SECAM ME RECORD, PAL PLAYBACK, SECAM ME PLAYBACK and NTSC PLAYBACK.
EP mode at NTSC PLAYBACK activates the same functions as LP mode.

Table 12 Operation mode (PART 2)

FILTER MODE CONDITIONS

EDIT OFF EDIT ON

SP LP SP LP

YNR REC YNR off; pin 47 HIGH OFF OFF

YNR 1; pin 47 medium OFF OFF
YNR 2; pin 47 LOW OFF vertical

emphasis

OFF

PB YNR off; pin 47 HIGH OFF OFF

YNR 1; pin 47 medium VNC (strong) LNC (weak) OFF
YNR 2; pin 47 LOW LNC (weak) VNC (strong) OFF LNC (weak)

NLE
NLDE

REC YNR off; pin 47 HIGH NLE(C) + DTE NLE(D) NLE(C) NLE(D)

YNR 1; pin 47 medium
YNR 2; pin 47 LOW

PB NLDE(C) NLDE(D) NLDE(C) NLDE(D)

Noise
canceller

PB ON WEAK

Picture
control

PB ON OFF

FM carrier interleave ON ON

FUNCTION CONDITIONS OPERATION

Clamps REC ON

PB NORM

dropout;
maximum 128 lines

OFF

Character insert REC orPBVIDEO; pin 42 LOW through

WHITE; pin 42 = M1 white level (85%)
BLACK; pin 42 = M2 black level
SYNC; pin 42 HIGH sync tip level

Search noise clip REC OFF

PB NORM

TRICK ON

SQPB PB VHS; pin 5

open-circuit

VHS

SQPB; pin 5 HIGH SQPB

1996 Oct 14 25

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

Automatic chrominance control (ACC) characteristics

Fig.4 ACC characteristics.

0 dB is equivalent to 110 mv (p-p) at pin 30.

handbook, halfpage

+ 6V

i

(dB)− 22

440

V

o(p-p)
(mV)

MBG150

1996 Oct 14 26

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

INTERNAL CIRCUITRY

Table 13 Internal circuitry of Figs 1 and 2

PIN

NO.

PIN NAME

(DESCRIPTION)

DC

(V)

WAVEFORM

Z INTERNAL CIRCUIT

EE VV

1 picture

control/EDIT switch

1.6 4.1 V to 5.0 V EDIT 0 V to 1.6 V sharp

1.6 V to 3.2 V soft

4.1 V to 5.0 V EDIT

50 kΩ

2 deviation/playback

AGC detector

2.5 V

T

/I

E

+

100 Ω/

1.3 kΩ

MBG140



50 kΩ

1

1.6 V

MBG145



100 Ω

1.6 kΩ 1.3 kΩ

1.3 kΩ

80 µA 2.7 µA

++

2

1996 Oct 14 27

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

3 test pin 2/

correlation

detector output

2.1 V = COR 0 V = non-COR V

T

/

500 µA

4 negative feedback

input of main

emphasis

1.9 V (sync)

500 mV sync-white

0 V open

base

5 main emphasis

output/white clip/

modulator input/

SQPB selector

1.9 V (sync)

500 mV sync-white

0V V

T

/1 mA

PIN

NO.

PIN NAME

(DESCRIPTION)

DC

(V)

WAVEFORM

Z INTERNAL CIRCUIT

EE VV

MBG136



500 µA

3

MBG106



200 Ω

4

MBG157

MBG138



1 mA

+

5

MBG156

1996 Oct 14 28

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

6 capacitor for

clamp 3

V

T

/I

E

7 storage capacitor

for f

0

processor

(REC)/ envelope

detector (PB)

1.2 V 3.3 V

8 main de-emphasis

output

5 V 3.4 V (sync)

300 mV sync-white

open

collector

PIN

NO.

PIN NAME

(DESCRIPTION)

DC

(V)

WAVEFORM

Z INTERNAL CIRCUIT

EE VV

MBG144



5 kΩ

1.3 kΩ

8 kΩ

5 kΩ

10 kΩ

+

+

++

6

55 pF

60 pF

MBG143



200 Ω

2 kΩ

10 kΩ

7

5 V

5 V

MBG135



9

8

MBG159

1996 Oct 14 29

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

9 main de-emphasis

and peaking

0 V 1.6 V (sync)

300 mV sync-white

V

T

/I

E

10 supply voltage for

FM parts

5.0

11 FM output 3.2 V

0.9 V (p-p) rectangle

3.7 V V

T

/I

E

+

100 Ω

12 switch

(PB/TRICK/REC)

0 V to 1.25 V REC 1.75 V to 3 V TRICK

3.5Vto5V PB

50 kΩ

PIN

NO.

PIN NAME

(DESCRIPTION)

DC

(V)

WAVEFORM

Z INTERNAL CIRCUIT

EE VV

MBG135



9

8

MBG158

MBG107



100 Ω

11

10

+V

CC(FM)

MBG154

50

kΩ

12

MBG133



1996 Oct 14 30

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

13 PB FM input 1.6 V 2.2 V

200 mV (p-p) sinusoidal

(350 mV (p-p) if FM AGC off)

10 kΩ

14 storage capacitor

for FM AGC

3.1 V

4.3 V to 5.0 V FM AGC off

15 switch

(LPC*/LP/SP) at

PAL

switch (EP/LP/SP)

at NTSC

0 0 V to 1.25 V SP

1.75Vto3.0VLP

3.5 V to 5.0 V LPC* (PAL)

3.5 V to 5.0 V EP (NTSC)

50 kΩ

PIN

NO.

PIN NAME

(DESCRIPTION)

DC

(V)

WAVEFORM

Z INTERNAL CIRCUIT

EE VV

MBG139



200 Ω

200 Ω

10 kΩ

+

13

2.2 V

MBG154

MBG142



200 Ω

3 kΩ

4 kΩ

190 kΩ

+

+

14

50

kΩ

15

MBG134



1996 Oct 14 31

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

16 colour killer

terminal

2.8

17 frequency

correction output

2.1

18 BGP output

(HIGH active)

(a) open circuit

(b) with 10 kΩ resistor to V

CC

PIN

NO.

PIN NAME

(DESCRIPTION)

DC

(V)

WAVEFORM

Z INTERNAL CIRCUIT

EE VV

MBG141



15 kΩ

+

16

1.8 V

BGP

BGP

MBG137



1 kΩ

17

5 V

0 V

MBG149

(a)

5 V

0 V

(b)

2.2 V

MBG132



20 kΩ

+

18

1996 Oct 14 32

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

19 rotary pulse 0 V to 2.25 V CH2

2.75Vto5VCH1

open

base

20 loop filter (REC)

VXO

2.4

21 loop filter VCO 2.1

22 not connected HIGH

PIN

NO.

PIN NAME

(DESCRIPTION)

DC

(V)

WAVEFORM

Z INTERNAL CIRCUIT

EE VV

+

19

2.5 V

MBG131



MBG130



80 kΩ

20

2.4 V

MBG129



1.8 kΩ

21

2.8 V

1.4 V

1996 Oct 14 33

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

23 f

SC

output 2.3 600 mV (p-p) V

T

/

300 µA

24 VXO input from

crystal

3.0 250 mV (p-p) 9 kΩ/

1.3 kΩ

25 VXO output to

crystal

3.3 230 mV (p-p) V

T

/

700 µA

PIN

NO.

PIN NAME

(DESCRIPTION)

DC

(V)

WAVEFORM

Z INTERNAL CIRCUIT

EE VV

MBG104



500 Ω

300 µA

+

23

MBG154

MBG127



5.2 kΩ

9 kΩ

1.5 kΩ

+

24

PB

3 V

MBG154

MBG103



500 Ω

700 µA

+

25

MBG154

1996 Oct 14 34

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

26 2f

SC

output 4.9 550 mV (p-p)

27 f

H/2

output

(coupled to burst

sequence)

NAP/NTSC4.43

switch

PB + REC

PB: forced 0 V: NTSC4.43 mode

28 chrominance

output to tape

2.4 660 mV (p-p) 2.4 V normal

0 V colour off

V

T

/

0.8 mA

29 supply voltage

chrominance

5.0

PIN

NO.

PIN NAME

(DESCRIPTION)

DC

(V)

WAVEFORM

Z INTERNAL CIRCUIT

EE VV

MBG109



7.5 kΩ

26

8.0 kΩ

MBG154

MBG110



30

kΩ

2 kΩ

2.5 V

+

27

MBG148

5 V

0 V

MBG111



500 Ω

0.8 mA

28

MBG153

1996 Oct 14 35

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

30 PB chrominance

input from tape

2.2 chrominance 110 mV (p-p)

and FM

10 kΩ

31 ground 0

32 ACC output 2.25 440 mV (p-p) V

T

/

400 µA

33 balanced mixer

input

1.9 440 mV (p-p) 2.7 kΩ

PIN

NO.

PIN NAME

(DESCRIPTION)

DC

(V)

WAVEFORM

Z INTERNAL CIRCUIT

EE VV

MBG115



10 kΩ 10 kΩ

30

2.2 V

MBG155

MBG125



1 kΩ

8 kΩ

400 µA

+

32

MBG153

MBG124



2.7 kΩ 2.7 kΩ

33

1.9 V

MBG153

1996 Oct 14 36

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

34 switch

SECAM/NTSC/PAL

0 0Vto1.25VPAL

1.75 V to 3.0 V NTSC

3.5 V to 5.0 V SECAM

50 kΩ

35 comb driver output 2.5 PAL and glass: 675 mV (p-p)

NTSC or CCD: 380 mV (p-p)

V

T

/1 mA

36 chrominance input

from comb filter

4.0 120 mV (p-p)

4.0 V: glass comb

<1.5 V: CCD comb

80 kΩ/

9kΩ

PIN

NO.

PIN NAME

(DESCRIPTION)

DC

(V)

WAVEFORM

Z INTERNAL CIRCUIT

EE VV

50

kΩ

34

MBG123



MBG116



120 Ω

710 Ω

1 mA

+

35

MBG153

MBG101



80 kΩ

11 µA

4.0 V

10 kΩ

+

36

MBG153

1996 Oct 14 37

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

37 test pin 1 0 50 kΩ

38 PB chrominance

output

1.6 325 mV (p-p) V

T

/

600 µA

39 PB chrominance

input

1.6

(2.0)

>3.4 V: AGCKP1 325 mV (p-p) 20 kΩ

40 supply voltage

luminance

5.0

PIN

NO.

PIN NAME

(DESCRIPTION)

DC

(V)

WAVEFORM

Z INTERNAL CIRCUIT

EE VV

MBG114



50 kΩ

4 kΩ

37

MBG102



200 Ω

600 µA

+

38

MBG153

MBG122



200 Ω

20 kΩ

100 kΩ

39

45 pF

2.0 V

MBG153

1996 Oct 14 38

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

41 video output 1.05

sync

sync-white: 2.14 V (p-p)

chrominance: 1.2 V (p-p)

V

T

/1 mA

42 character insert

(artificial sync/

black/white/

through)

0.0 0 V to 1.0 V through

1.5 V to 2.25 V white

2.75 V to 3.5 V black

4.0 V to 5.0 V sync

50 kΩ

43 video input 2.75 sync-white: 1.0 V (p-p)

chrominance: 660 mV (p-p)

PIN

NO.

PIN NAME

(DESCRIPTION)

DC

(V)

WAVEFORM

Z INTERNAL CIRCUIT

EE VV

MBG113



5 kΩ

1.0 mA

+

41

MBG152

MBG119



50 kΩ

50 kΩ

50 kΩ

2 kΩ

42

MBG120



3.5 kΩ

20 kΩ

11.5 kΩ

+

+

43

2.75 V

MBG152

1996 Oct 14 39

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

44 AGC detector 2.5 V

T

/I

E

+

100 Ω

45 sync separator

output

46 sync separator

detector

3.1 V

T

/I

E

+

500 Ω

PIN

NO.

PIN NAME

(DESCRIPTION)

DC

(V)

WAVEFORM

Z INTERNAL CIRCUIT

EE VV

MBG121



1 kΩ

125 Ω

40 kΩ

2.4 kΩ

2.5 µA60 µA

+

+

44

5 V

0 V

MBG147

MBG112



200 Ω

+

45

MBG117



200 Ω

500 Ω 500 Ω

200 kΩ 220 kΩ

+

+

46

1996 Oct 14 40

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

47 YNR switch 0 0 V to 1.25 V YNR2

1.75 V to 3.0 V YNR1

3.5 V to 5.0 V YNR off

50 kΩ

48 video input from

1H CCD

1.9 283 mV (p-p) 40 kΩ

49 video output to

1H CCD

1.4

sync

420 mV (p-p) V

T

/

230 µA

PIN

NO.

PIN NAME

(DESCRIPTION)

DC

(V)

WAVEFORM

Z INTERNAL CIRCUIT

EE VV

50

kΩ

47

MBG118







MBG100



48

40 kΩ

1.9 V

MBG146

MBG105



5 kΩ

500 Ω

230 µA

49

+

MBG146

1996 Oct 14 41

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

50 storage capacitor

for CCD level AGC

2.0

51 ground luminance 0

52 low-pass filter for

noise canceller

1.2 noise 1 kΩ

PIN

NO.

PIN NAME

(DESCRIPTION)

DC

(V)

WAVEFORM

Z INTERNAL CIRCUIT

EE VV

MBG108



20 kΩ

95 µA

+

50

MBG128



1 kΩ

260 Ω

50 kΩ

230

µA

+

52

15 pF

MBG151

1996 Oct 14 42

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

PACKAGE OUTLINE

UNIT b

1

cEe M

H

L

REFERENCES

OUTLINE
VERSION

EUROPEAN

PROJECTION

ISSUE DATE

IEC JEDEC EIAJ

mm

DIMENSIONS (mm are the original dimensions)

SOT247-1

90-01-22
95-03-11

b

max.

w

M

E

e

1

1.3

0.8

0.53

0.40

0.32

0.23

47.9

47.1

14.0

13.7

3.2

2.8

0.181.778 15.24

15.80

15.24

17.15

15.90

1.73

5.08 0.51 4.0

M

H

c

(e )

1

M

E

A

L

seating plane

A

1

w M

b

1

D

A

2

Z

52

1

27

26

b

E

pin 1 index

0 5 10 mm

scale

Note

1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.

(1) (1)

D

(1)

Z

e

A

max.

12

A

min.

A

max.

SDIP52: plastic shrink dual in-line package; 52 leads (600 mil)

SOT247-1

1996 Oct 14 43

Philips Semiconductors Product specification

Y/C automatic adjustment processor
(VHS standard)

TDA9725

SOLDERING
Introduction

There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-hole and surface mounted components are mixed
on one printed-circuit board. However, wave soldering is
not always suitable for surface mounted ICs, or for
printed-circuits with high population densities. In these
situations reflow soldering is often used.

This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our

“IC Package Databook”

(order code 9398 652 90011).

Soldering by dipping or by wave

The maximum permissible temperature of the solder is
260 °C; solder at this temperature must not be in contact
with the joint for more than 5 seconds. The total contact
time of successive solder waves must not exceed
5 seconds.

The device may be mounted up to the seating plane, but
the temperature of the plastic body must not exceed the
specified storage maximum (T

stg max

). If the printed-circuit
board has been pre-heated, forced cooling may be
necessary immediately after soldering to keep the
temperature within the permissible limit.

Repairing soldered joints

Apply a low voltage soldering iron (less than 24 V) to the
lead(s) of the package, below the seating plane or not
more than 2 mm above it. If the temperature of the
soldering iron bit is less than 300 °C it may remain in
contact for up to 10 seconds. If the bit temperature is
between 300 and 400 °C, contact may be up to 5 seconds.

DEFINITIONS

LIFE SUPPORT APPLICATIONS

These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.

Data sheet status

Objective specification This data sheet contains target or goal specifications for product development.
Preliminary specification This data sheet contains preliminary data; supplementary data may be published later.
Product specification This data sheet contains final product specifications.

Limiting values

Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.

Application information

Where application information is given, it is advisory and does not form part of the specification.

Internet: http://www.semiconductors.philips.com

Philips Semiconductors – a worldwide company

© Philips Electronics N.V. 1996 SCA52
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.

The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.

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Philippines: Philips Semiconductors Philippines Inc.,
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Metro MANILA, Tel. [phone], Fax. [phone]

Poland: Ul. Lukiska 10, PL 04-123 WARSZAWA,
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Portugal: see Spain
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Russia: Philips Russia, Ul. Usatcheva 35A, 119048 MOSCOW,

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Singapore: Lorong 1, Toa Payoh, SINGAPORE 1231,

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Japan: Philips Bldg 13-37, Kohnan 2-chome, Minato-ku, TOKYO 108,

Tel. [phone], Fax. [phone]
Korea: Philips House, 260-199 Itaewon-dong, Yongsan-ku, SEOUL,

Tel. [phone], Fax. [phone]
Malaysia: No. 76 Jalan Universiti, 46200 PETALING JAYA, SELANGOR,

Tel. [phone], Fax. [phone]
Mexico: 5900 Gateway East, Suite 200, EL PASO, TEXAS 79905,

Tel. [phone]
Middle East: see Italy

Printed in The Netherlands 537021/50/02/pp44 Date of release: 1996 Oct 14 Document order number: 9397 750 01024