Product specification
Supersedes data of 1995 Dec 06
File under Integrated Circuits, IC02
1996 Oct 14
Page 2
Philips SemiconductorsProduct specification
Y/C automatic adjustment processor
TDA9725
(VHS standard)
FEATURES
• Automatic adjustment by control loops
• Integrated filters
• Simple SVHS playback
• Colour sequence correction for long-play still mode
• Automatic gain control for FM.
QUICK REFERENCE DATA
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
V
I
V
CC
CC
i(p-p)
supply voltage4.55.05.5V
supply currentVCC= 5 V; playback140170200mA
video input voltage; CVBS signal
(peak-to-peak value)
V
oREC(p-p)
video output record voltage
(peak-to-peak value)
V
oPB(p-p)
video output playback voltage
(peak-to-peak value)
V
iFM(p-p)
V
oFM(p-p)
V
CFT(p-p)
FM input voltage (peak-to-peak value)FM AGC active63200632mV
FM output voltage (peak-to-peak value)RL=1kΩ0.70.91.1V
chrominance input voltage (+FM) from tape
(peak-to-peak value)
V
CTT(p-p)
chrominance output voltage to tape
(peak-to-peak value)
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.
(1) Low leakage current.
All capacitors for loop filter ±10%; all other capacitors+10%/−50%; all resistors ±5%; all inductors ±10%; unless otherwise specified.
Fig.1 Block diagram (continued in Fig.2).
1996 Oct 143
Page 4
Philips SemiconductorsProduct specification
Y/C automatic adjustment processor
(VHS standard)
handbook, full pagewidth
CK
H BLANK
AGCKP1
TP1
PBCI
A
PBCO
393837363534333231302928 27
LPF
f
*
C
H/2
NAP
PB/SP
CF892
COMB
-15 dB
4
2
1.3
kΩ
CFICDO
SEC
10 nF
270 Ω
3
15
µH
COMB
DRIVER
BURST
DOWN
SNP
50 kΩ
from
4 PHI
10 nF
BMIACCO
BALANCED
MIXER
BURST UP
GND(C)
BPF
630
CFT
PB
REC
V
CC(C)
10 nF
ACC
ACC
DETECTOR
TDA9725
f
CTT
0.1
µF
H/2
REC
DETECTOR
PHI/PB
VXO
RECORD
AFC
FPC
BGP ROT
PB
BPF
4.43
REC
CK/FPC
REC
PB
REC
to BM
4 PHI : 4SLD
120
0.1 µF
(1)
kΩ
470
pF
LFVXOLFVCO
LPF
630
CK
f
sc
DIVIDER
SUBMIXER
LPF
680
Ω
1 µF
(1)
TDA9725
3rd
LOCK
VCO
47
nF
CK
X2
VXO
REC
PB
SEC
MUTE
XTALIXTALO
TEW 8H
f
sc
2 f
4.43619
MHz
sc
f
H/2
4.7 kΩ
V
8.0
kΩ
33
pF
CC(C)
PB
RECPB/LP
from pin 43
MUTE
MUTE
50 kΩ
151617181920212223242526
ELS
CK
HSS
0.1
µF
: 40
(1)
1 µF
TIMER
FCO
FREQUENCY
DETECTOR
22 kΩ
V
MGB695
6.8
µH
CC(C)
(1) Low leakage current.
Fig.2 Block diagram (continued from Fig.1).
1996 Oct 144
Page 5
Philips SemiconductorsProduct specification
Y/C automatic adjustment processor
(VHS standard)
Table 1 Explanation of symbols in Figs 1 and 2
SYMBOLDESCRIPTION
AGCKP1mode with shortened key pulse for AGC
BGPburst gate pulse
DOPdropout pulse
f
FUNCTIONAL DESCRIPTION
Record (REC)/electric to electric (EE) mode
UMINANCE
L
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.
HROMINANCE
C
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.
TDA9725
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.
HROMINANCE
C
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).
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
V
V
V
I
P
T
T
V
CC
I
n
I
tot
stg
amb
es
supply voltage0−6.0V
input voltage at pin 220−1.6V
input voltage on all other pins0−V
CC
input current at pin 22−−10mA
total power dissipation−−1250mW
storage temperature−25−+150°C
operating ambient temperature−20−+70°C
electrostatic handling for all pinsnote 1−300−+300V
Note
1. Charge device model class B: discharging a 200 pF capacitor via a 0 Ω series resistor.
THERMAL CHARACTERISTICS
SYMBOLPARAMETERVALUEUNIT
R
th j-a
thermal resistance from junction to ambient in free air43K/W
V
1996 Oct 147
Page 8
Philips SemiconductorsProduct specification
Y/C automatic adjustment processor
TDA9725
(VHS standard)
CHARACTERISTICS
VCC=5V; T
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.
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
Supplies
V
CC
I
PB
I
REC
FM SUPPLY (PIN 10)
I
PB
I
REC
CHROMINANCE SUPPLY (PIN 29)
I
CC(C)
UMINANCE SUPPLY (PIN 40)
L
I
PB
I
REC
Picture control/edit switch input (pin 1)
V
1
= +25 °C and typical application (see Figs 1 and 2), unless otherwise specified.
burst gate pulse duration4.24.454.7µs
start of burst gate beyond
3.253.53.75µs
sync start at pin 45
LOW level DC output
voltage
medium level DC output
voltage
HIGH level DC output
voltage
vertical blanking of BGP
start
vertical blanking of BGP
stop
inactive; I18=1mA−−0.7V
inactive; I
horizontal blanking;
10 kΩ connected to V
=0mA−−0.5V
18
2.22.63.0V
CC
BGP; I18= −0.4 mA4.04.4−V
BGP; I
referring to first equalisation
=0mA4.6−−V
18
−0−t
pulse in mid of line
referring to rotary transition23−−t
referring to last equalisation pulse
1−−t
in mid of line
voltage for −90° phase
channel 20−2.25V
rotation
voltage for non-rotation
channel 12.75−5V
(PAL) or +90° rotation
(NTSC)
H
H
H
Loop filter VXO (pin 20; record mode)
V
Φ
f
PI(U)
f
PI(L)
20
VXO
DC voltage12.43.6V
VXO sensitivity−1.6−1.2−0.8Hz/mV
upper pull-in frequency0.61.01.8kHz
lower pull-in frequency−1.8−1.0−0.6kHz
Loop filter VCO (pin 21)
V
21
Φ
VCO
output (pin 23)
f
sc
V
23
V
o(p-p)
DC voltage1.32.12.9V
VCO sensitivityfH related; record mode−34−38−42kHz/V
DC output voltage1.82.32.8V
output signal voltage
(peak-to-peak value)
H
2
H
3
second harmonic distortion−−−25dB
third harmonic distortion−−−20dBVXO input from crystal (pin 24); note 6
V
24
DC voltage2.63.03.4V
f
related; playback mode−1.3−1.5−1.7MHz/V
sc
no load500600700mV
1996 Oct 1413
Page 14
Philips SemiconductorsProduct specification
Y/C automatic adjustment processor
TDA9725
(VHS standard)
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
VXO output to crystal (pin 25)
V
25
∆f
osc
2f
output (pin 26)
sc
V
26
V
o
H
2
output; coupled to burst sequence (pin 27)
f
H/2
V
O(L)
V
O(H)
V
NTSC4.43
DC output voltage2.93.33.7V
deviation of oscillator
frequency
due to internal spread;
playback mode
video signal without burst;
−50−+50Hz
−1.4−+1.4kHz
record mode
no video signal; record mode−100−+100Hz
= 4.75 to 5.25 V;
V
CC
= −10 to +70 °C;
T
amb
−100−+100Hz
playback mode
DC output voltage4.54.9−V
output signal voltage1.2 kΩ connected to VCC and
405570mV
emitter follower (EF)
tuned LC circuit to V
and EF400550700mV
CC
second harmonic distortiontuned LC circuit (Q > 20) and EF−−−30dB
LOW level DC output
burst phase = +135°−−0.5V
voltage
HIGH level DC output
burst phase = −135°4.5−−V
voltage
input level for forced
NTSC; playback mode−−1.5V
NTSC 4.43 mode (no NAP)
Chrominance output to tape (pin 28); see Table 2
V
28
DC output voltagecolour on2.12.42.7V
colour killer active−0.10.3V
V
o(p-p)
chrominance output signal
record mode; PAL467660932mV
voltage (N × fH)
(peak-to-peak value)
G
UP
SECAM-fOR burst related
SECAM0.21.01.8dB
to PAL burst
H
2
H
3
α
CK
second harmonic distortionV33=0dB−−−40dB
=+6dB−−−35dB
V
33
third harmonic distortionV33=0dB−−−40dB
=+6dB−−−35dB
V
33
colour killer suppression40−−dB
Playback chrominance input from tape (pin 30)
V
V
30
i(p-p)
DC voltage1.72.22.7V
input signal voltage
(peak-to-peak value)
chrominance + FM−−310mV
chrominance11110220mV
1996 Oct 1414
Page 15
Philips SemiconductorsProduct specification
Y/C automatic adjustment processor
TDA9725
(VHS standard)
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
ACC output (pin 32); see Table 5
V
32
V
o(p-p)
∆G
o
H
2
H
3
Balanced mixer input (pin 33)
V
33
V
i(p-p)
Switch SECAM/NTSC/PAL (pin 34)
R
I
V
i
DC output voltage1.752.252.75V
controlled output signal
voltage
(peak-to-peak value)
deviation of output signalVi= −15 dB/+6 dB;
Vi= 0 dB; record mode370460550mV
= 0 dB; playback mode; PAL;
V
i
350440530mV
−15 dB comb filter
−1.0−+1.0dB
record and playback modes
second harmonic distortionnominal input and output signal−−−40dB
third harmonic distortionnominal input and output signal−−−40dB
DC voltage1.61.92.2V
nominal input signal voltage
−440−mV
(peak-to-peak value)
internal resistance to
405060kΩ
ground
input voltageactive SECAM mode3.5−5V
active NTSC mode1.75−3V
active PAL mode0−1.25V
Comb driver output (pin 35); see Tables 3, 4 and 10
V
V
35
o(p-p)
DC output voltagerecord and playback modes2.02.53.0V
output signal voltage
(peak-to-peak value)
playback mode; NTSC;
−10 dB comb filter
playback mode; PAL/SECAM;
−15 dB comb filter
H
H
∆G
∆G
G
2
3
BD(S)
BD(E)
SECid
second harmonic distortionplayback mode; 0 dB−−−40dB
third harmonic distortionplayback mode; 0 dB−−−40dB
burst downplayback mode; NTSC; SP−6.0−5.0−4.0dB
burst downplayback mode; NTSC; EP−5.0−4.0−3.0dB
gain of output signal for
SECAM identification
record mode (ACC is not active)
from pin 43
Chrominance input from comb filter (pin 36)
V
V
V
GL
CCD
i(p-p)
DC voltage for glass combAC coupled3.24.04.8V
DC voltage for CCD combDC coupled0−1.5V
input signal voltage
PAL; NTSC−120−mV
(peak-to-peak value)
304380456mV
540675810mV
−3.0−dB
1996 Oct 1415
Page 16
Philips SemiconductorsProduct specification
Y/C automatic adjustment processor
TDA9725
(VHS standard)
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
Playback chrominance output (pin 38; sync blanking is always active); see Table 6
output amplitude deviationC to C*; V36= 120 mV (p-p)−1.50+1.5dB
output phase deviationC to C* or NAP line n to n + 1−150+15°
phase for NAP burstNAP burst to −(B − Y) axis±30±45±60°
2fscsuppressionC*; V36= 120 mV (p-p)35−−dB
3fsc suppressionC*; V36= 120 mV (p-p)1825−dB
DC voltage1.72.02.3V
input voltage
−325−mV
(peak-to-peak value)
threshold level of AGCKP1
record mode2.63.03.4V
(no reaction on copy guard)
CVBS output (pin 41); see Table 7
V
41
DC output voltage sync tip; RL= 2.1 kΩ0.91.051.2V
RECORD MODE
V
oREC(p-p)
record output voltage
(standard output level)
(peak-to-peak value)
∆V
oREC(p-p)
record output voltage level
stability
(peak-to-peak value)
V
o(p-p)
compressed sync output
voltage (200 IRE)
(peak-to-peak value)
G
CON
control characteristic of
AGC
∆V
CG
VHS standard
(signal amplitude for
copy guard tapes)
video/sync = 7/3; RL= 2.1 kΩ2.032.142.25V
∆VCC= ±0.25 V or
T
= −10 to +70 °C
amb
−40−+40mV
video/sync = 7.0/1.52.132.322.52V
V43= 0.5 to 2.0 V (p-p)00.21.0dB
100% = typical output level;
35−48%
copy guard 7 lines/field
1996 Oct 1416
Page 17
Philips SemiconductorsProduct specification
Y/C automatic adjustment processor
TDA9725
(VHS standard)
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
PLAYBACK MODE
V
oPB(p-p)
∆V
oPB(p-p)
V
NC
∆V
os
α
ct
t
att
t
rec
V
o(p-p)
∆G
CHROM
VERTICAL SYNCHRONIZATION PULSE/CHARACTER INSERT (RECORD AND PLAYBACK MODES)∆V
ST
∆V
bl(p-p)
∆V
wh(p-p)
α
VIDEO
NON-LINEAR DE-EMPHASIS (PLAYBACK MODE); note 7
S1response S1−20 dB; f
S2response S2−20 dB; f
L1response L1−20 dB; f
L2response L2−20 dB; f
L3response L30 dB; f
NOISE CANCELLER (PLAYBACK MODE); note 8
NC1response NC1−30 dB; f
NC2response NC2−30 dB; f
NC4response NC40 dB; f
NCEDresponse NCEDIT−30 dB; f
playback output voltage
(peak-to-peak value)
video/sync = 7/3; nominal FM
signal; RL= 2.1 kΩ; test: EE
2.032.142.25V
without ME, MDE, peaking, YNR
playback output voltage
level stability
∆VCC= ±0.25 V or
T
= −10 to +70 °C
amb
−40−+40mV
(peak-to-peak value)
white noise clip levelblack-to-white = 100%; TRICK115135150%
offset voltage between
−25−+25mV
DOC mode and normal
mode
DOC switch crosstalk0 dB = 2.0 V (p-p); fi= 1 MHz−−−40dB
attack time of switching to
−0.71.0µs
DOC mode from normal
mode
recovery time of switching
4.05.06.0µs
to normal mode from DOC
mode
chrominance output
V30= 110 mV (p-p)1.01.21.4V
voltage
(peak-to-peak value)
chrominance frequency
Vi=V39; fi=5to1MHz−2−+2dB
response
artificial sync tip level
V42= 0 to 5 V; playback mode−500+50mV
voltage offset
artificial black level voltage
V42= 5 to 3 V0.580.680.78V
(peak-to-peak value)
artificial white level voltage
V42= 5 to 2 V1.71.92.05V
(peak-to-peak value)
suppression of video at
40−−dB
character insert
= 500 kHz; SP−2.9−1.9−0.9dB
i
= 2 MHz; SP−6.5−5.0−3.5dB
i
= 500 kHz; LP−6.5−4.8−3.0dB
i
= 2 MHz; LP−10.2−8.4−6.7dB
i
= 2 MHz; LP−4.8−3.2−1.8dB
i
= 1 MHz; NORMAL−5.5−3.5−1.4dB
i
= 2 MHz; NORMAL−15.0−11.6−8.0dB
i
= 2 MHz; NORMAL−1.3−0.3+0.7dB
i
= 2 MHz; EDIT−5.0−3.4−1.8dB
i
1996 Oct 1417
Page 18
Philips SemiconductorsProduct specification
Y/C automatic adjustment processor
TDA9725
(VHS standard)
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
LINE NOISE CANCELLER (YNR WEAK; PLAYBACK MODE); note 9
LNC1depth 1−30 dB non-recursive−7.0−5.5−4.5dB
LNC2depth 2−20 dB non-recursive−4.3−3.3−2.3dB
LNC3depth 30 dB non-recursive−1.0−0.20dB
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 1420
Page 21
Philips SemiconductorsProduct specification
Y/C automatic adjustment processor
TDA9725
(VHS standard)
CHROMINANCE FILTER CHARACTERISTICS
Table 2 Low-pass filter 630 kHz; frequency response pin 33 to pin 28
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
OUTLINE
VERSION
SOT247-1
IEC JEDEC EIAJ
REFERENCES
1996 Oct 1442
EUROPEAN
PROJECTION
ISSUE DATE
90-01-22
95-03-11
Page 43
Philips SemiconductorsProduct specification
Y/C automatic adjustment processor
(VHS standard)
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”
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.
(order code 9398 652 90011).
TDA9725
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
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.
). If the printed-circuit
stg max
DEFINITIONS
Data sheet status
Objective specificationThis data sheet contains target or goal specifications for product development.
Preliminary specificationThis data sheet contains preliminary data; supplementary data may be published later.
Product specificationThis 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.
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.
1996 Oct 1443
Page 44
Philips Semiconductors – a worldwide company
Argentina: see South America
Australia: 34 Waterloo Road, NORTH RYDE, NSW 2113,
United States: 811 East Arques Avenue, SUNNYVALE, CA 94088-3409,
Tel. +1 800 234 7381
Uruguay: see South America
Vietnam: see Singapore
Yugoslavia: PHILIPS, Trg N. Pasica 5/v, 11000 BEOGRAD,
Tel. +381 11 625 344, Fax.+38111 635777
For all other countries apply to: Philips Semiconductors, Marketing & Sales Communications,
Building BE-p, P.O. Box 218, 5600 MD EINDHOVEN, TheNetherlands, Fax.+31 4027 24825
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.
Internet: http://www.semiconductors.philips.com
Printed in The Netherlands537021/50/02/pp44 Date of release: 1996 Oct 14Document order number: 9397 750 01024
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