Datasheet STV5728 Datasheet (SGS Thomson Microelectronics)

4-HEAD VIDEOAND 2-HEADSHIFI AUDIO

PLAYBACKAND RECORD AMPLIFIERFORVCR

.

ONE 5V POWERSUPPLY

.

PLAYBACK/RECORD MODE SELECTION
THROUGH A LOGICINPUT

.

PINNING COMPATIBLE WITH STV5725 AND
STV5727

.

SO28 PACKAGE

PLAYBACK MODE

.

LOW NOISE AND WIDE BAND AMPLIFIERS
FOR4 VIDEOHEADS

.

AUTOMATIC OFFSET CANCELLATION
BETWEENTHE 2 SELECTEDHEADS

.

ONE PLAYBACKOUTPUT WITH AGC

.

ONE PLAYBACKOUTPUT(60dB CONSTANT
GAIN)

.

ONE OUTPUT FOR AUTOMATIC VIDEO
TRACKING

.

SP/LPENVELOPECOMPARATOROUTPUT

.

LOWNOISEAMPLIFIERSFOR 2 HIFIHEADS

.

HIFI OUTPUT GAIN (70dB)

RECORDMODE

.

TRANSCONDUCTANCE AMPLIFIER FOR
VIDEO

.

AGC AMPLIFIER FORHIFI

DESCRIPTION

STV5728is intendedfor4 headsVCR applications
withHIFI.It includesall the electricalfunctionsnec­essaryto achieveplay-backandrecordprocessing.

Recordor PlaybackModecanbe selectedthrough
SWR Pin. SWH allows to select the video head
input(H1SPor H2SP,H1LP or H2LP), whileSWM
will select the mode SP or LP. The SWFMH will
selecttheFMinputheadsin Playbackandwillmute
the HIFI record amplifier in Record Mode.

PlaybackMode (Video)
Signalsapplied on H1SP, H2SP, H1LP and H2LP

input pins will be amplified by 60dB voltage gain.
I
ground. The input signal can be selected through
SWHand SWM inputs and the corresponding out­put signal will be availableon PinCPB. The offset

OUTSP

and I

Pins are AC short-circuited to

OUTLP

STV5728

voltage between the two selected heads is auto­maticallycancelledafter 32 switchinghead cycles.
A constant output signal will be available on Pin
YPB thanks to an AGC function (Automatic Gain
Control). The time constant of the AGC is deter­mined by the capacitorvalue connected to CAGC
Pin. For Automatic Tracking, a signal which is a
function of the selected input signal amplitude is
present on Pin TRIV. For Trick Mode, a signal
resulting from the comparison of the input signal
amplitudeis availableon ENVC Pin.

SO28

(Plastic Package)

ORDER CODE : STV5728

PIN CONNECTIONS

H1SP

GNDSP

H2SP

I

OUTSP

CCOM

I

OUTLP

H2LP

GNDLP

H1LP

CCOM2

I

OUTFM

H1FM

GNDFM

H2FM

1
2
3
4
5
6
7
8
9
10
11
12
13
14

28
27
26
25
24
23
22
21
20
19
18
17
16
15

SWR
SWIN
V

CC

RECIN
CPB
GND
YPB
TRIV

ENV

CAGC

FMRIN
FMPB

SWFMH

V

CCFM

5728-01.EPS

May 1997

1/11

STV5728

BLOCKDIAGRAM

H1SP

H2SP

SP HEADS

CCOM

LP HEADS

H2LP

H1LP

CCOM2

HIFIHEADS

H1FM

60dB

1

2

3

60dB

4

5

6

60dB

7

8

60dB

9

10 19

11

12

Detector

Record Reference

70dB

Current (FM)

Record AGC

REC

PB

H2LP

H1LP
H1SP
H2SP

Record
Amplificator

Playback
AGC

28

27

26

25

24

23

22

21

20

18

17

+5V

CAGC

22k

8.2k

Rrcy

Rrcc

R

ADJ

Rfmin

Ω

Ω

SWR
SWH

SWM
V

CC

YREC

CREC
CPB

YPB

TRIV(ATR)
ENV

Envelope Comp

FMREC

FMPB

13

PB REC MUTE

H2FM

14

70dB

H1FM OFF
H2FM ON

STV5728

FUNCTIONAL DESCRIPTION
RecordMode (Video)

ThecurrentinputappliedonRECINPinis amplified
througha transconductanceamplifier.Specialcare
has been taken to speed up commutation from
Playbackto Record and fromRecordto Playback,
avoidingspikesthroughtheloads (the rotarytrans­formers).The recordingcurrentlevel inLP mode is

0.9 time the valueof SP one.

PlaybackMode (FM HIFI)
Signalsappliedon H1FMand H2FMinput Pinswill

be amplified by 70dB voltage gain. I

2/11

OUTFM

Pin is

16

15

+5V

SWFMH

V

CCFM

AC short-circuitedto groundbyCCOM1. The input
signal can be selected throughSWFMH input and
thecorrespondingoutput signalwill beavailableon
Pin FMPB.

Record Mode (HIFI)
ThecurrentinputappliedonFMRINPinis amplified

through an Automatic Gain Control amplifier. The
recordinglevelcan be adjustedthanks to the R

ADJ

resistanceconnectedtoTRIVPin.Specialcarehas
beentakento speedupcommutationfromPlayback
to Recordand from Record to Playback, avoiding
spikesthroughthe loads (therotarytransformers).

5728-02.EPS

STV5728

ABSOLUTEMAXIMUM RATINGS

Symbol Parameter Value Unit

V

CC

T

T

oper

THERMAL DATA

Symbol Parameter Value Unit

R

th (j-a)

RECOMMENDED OPERATING CHARACTERISTICS

Symbol Parameter Min. Typ. Max. Unit

V

CC

V

CCFM

CAGC AGC Time Constant 4.7 22 nF

CCOM Decoupling Capacitor 4.7 470 nF

CCOM1 Decoupling Capacitor 4.7 470 nF

R

ADJ

Figure 1 : FM RecordCurrentAmplifier; RecordCurrent Adjustment Curve

Power Supply Voltage 6 V
Junction Temperature 150

j

Operating Temperature 0, +70

Junction-ambient Thermal Resistance

Max. 75

(IC solded on the PC board)

Power Supply 4.75 5 5.25 V
FM HIFI Power Supply 4.75 5 5.25 V

Record Current Adjustment Resistor 15 22 33 k

70

o

C/W

o

C

o

C

5728-01.TBL

5728-02.TBL

Ω

5728-03.TBL

60

)

PP

50

40

Current(mA

30

20

10 20 30 40

A certain ratio must be kept between R

to insure maximum performances with an

R

FMIN

ADJ

and

averag e FM recording input voltage around
170mV

. Some examplesare given in the follow-

PP

ingtables.If theaverageinput voltage is higher (or
lower), the R

value must be increased (de-

FMRIN

creased)proportionnaly.

R

ADJ

RecordingLevel

Value(kΩ)

SET-UP R

(1) 15k
(2) 22kΩ 1.5kΩ
(3) 33kΩ 2kΩ

ADJ

5728-03.EPS

R

FMRIN

Ω

1k

Ω

3/11

STV5728

ELECTRICALCHARACTERISTICS (T

=25oC, unless otherwisespecified)

amb

PlaybackMode

= 5V,no loadon YPBand CPBPins, R

V

CC

Symbol Parameter Test Conditions Min. Typ. Max. Unit

PLAYBACK AMPLIFIER

I

CC1

Supply Current 40 48 53 mA

GPB Playback Gain Sinewave 600kHz, 0.4mV

EN Equivalent Voltage Noise

IN Equivalent Input Current Input open @ 6MHz, BW = 10kHz 1.4 2 2.6

CRT1 Crosstalk Between SP Channels

(or LP Channels)

CRT2 Crosstalk Sinewave @ 600kHz, 0.4mV
CRT3

Crosstalk Between SP1and LP2
Channels (or SP2 to LP1 Channels)

RPBSW Playback Switch on Resistor @ 6MHz 0.8 2.5 18

BWLCF Attenuation @ 100kHz Reference level @ 600kHz -1 0 1 dB

BWHCF Attenuation @ 8MHz Reference level @ 4MHz -3 1 0 dB

C
R

Input Capacitance @ 6MHz 22 27 32 pF

IN

Input Resistance @ 6MHz 500 730 950 Ω

IN

ZCPB Output Resistance DC 5 14 50

VDCPB1 DC Levelon Pin CPB 1.35 1.75 2.15 V

DVDC Head Switch Offset -200 0 200 mV

SHPB1 2nd Harmonic Sinuswave @ 4MHz, 0.4mV

PLAYBACK AGC FUNCTION

ZYPB Output Impedance @ YPB 5 14 50 Ω
VDCPB2 DC Level@ YPB 1.15 1.45 1.85 V
BWLCF2 Attenuation @ 100kHz Reference @ 4MHz, PB AGC locked -1 0 1 dB

BWHCF2 Attenuation @ 8MHz Reference @ 4MHz, PB AGC locked -3 -1 1 dB

VLPB Output Amplitude Sinuswave @ 4MHz, 0.4mV

SHPB2 Second Harmonic Sinuswave @ 4MHz, 0.4mVPPon input -44 -40 dB

IPB+ CAGC Sink Current 50 100 150

IPB- CAGC Source Current -150 -100 -50

DVLP AGC Sensitivity

TRIV FUNCTION

VTRIV0 Output Level (1) SP mode, V
VTRIV4 Output Level (4) LP mode, V
VTRIV5 Output Level (5) SP mode, V
VTRIV6 Output Level (6) SP mode, V
VTRIV7 Output Level (7) LP mode, V
VTRIV8 Output Level (8) LP mode, V
VTRIV9 Output Level (9) SP mode, V

VTRIV10 Output Level (10) SP mode, V

FTRIV1

FTRIV2

Response Lower Frequency,
Attenuation @ 1MHz

Response Higher Frequency,
Attenuation @ 8MHz

=22kΩ, after 32 SWH (SWitching Head) cycles.

ADJ

on inputs 58 60 62 dB

PP

Input grounded via I
BW = 10kHz

Sinewave @ 4MHz, 0.4mV

Sinewave @ 6MHz, 0.4mV

Sinuswave @ 4MHz, 0.2mV

-5dB and +6dB

= 0mVPP@ 4MHz 0.05 0.28 0.7 V

cpb

= 600mVPP@ 4MHz 4.1 V

cpb

= 100mVPP@ 4MHz 1.33 V

cpb

= 200mVPP@ 4MHz 2.27 V

cpb

= 100mVPP@ 4MHz 1.4 1.8 2.2 V

cpb

= 200mVPP@ 4MHz 3.11 V

cpb

= 300mVPP@ 4MHz 2.95 V

cpb

= 600mVPP@ 4MHz 3.85 V

cpb

Reference : SP mode, V
@ 4MHz

Reference : SP mode, V
@ 4MHz

Pin @ 600kHz,

OUT

PP

PP

PP

PP

PP

= 100mV

cpb

= 100mV

cpb

0.5 0.6 0.7

PP

on input 160 200 250 mV

on input,

PP

PP

-1 0 1 dB

-41 -39 dB

-50 dB

-60 -50 dB

-43 -37 dB

-6 dB

-1 dB

nV

√Hz

pA

Hz

√

Ω

Ω

µ
µ

PP

A
A

5728-04.TBL

4/11

STV5728

ELECTRICAL CHARACTERISTICS (T

=25oC, unlessotherwise specified)(continued)

amb

Playback Mode (continued)

= 5V,no load on YPBand CPB Pins, R

V

CC

Symbol Parameter Test Conditions Min. Typ. Max. Unit

SP/LP ENVELOPE DETECTOR

R

OH

R

OL

Output Resistance @ ENVC Sinewave600µVPP@ 4 MHz on H2SP 0.65 1.6 2.8 kΩ
Output Resistance @ ENVC Sinewave600µVPP@ 4 MHz on H1LP 0.65 1.6 2.8 kΩ

VENVCH Output Level 4 5 V

VENVCL Output Level 0 1 V

SENS1 Sensibility 100µV
SENS2 Sensibility 100µV

PLAYBACKAMPLIFIER (HIFI)

I

CCFM1

Supply Current 24 28 32 mA

GPBFM Playback Gain Sinewave 1.6MHz, 0.2mV

ENFM Equivalent Voltage Noise

INFM Equivalent Input Current Input open@ 1.6MHz, BW = 10kHz 2.4 3.5 5

CRTFM1 Crosstalk Sinewave @ 1.6MHz, 0.2mV

RPBFMSW Playback Switch on Resistor @ 6MHz 1.1 2.4 5

BWFMLCF Attenuation @ 1MHz Reference level @ 1.6MHz -1 0 1 dB

BWFMHCF Attenuation @ 2MHz Reference level @ 1.6MHz -1 0 1 dB

C
R

INFM
INFM

Input Capacitance @ 1.6MHz 35 pF
Input Resistance @ 1.6MHz 100 550 1000 Ω

ZCPBFM Output Resistance DC 5 24 50 Ω

VDCPBFM DC Level on Pin YFMPB 1.4 1.8 2.5 V

DVDCFM Head Switch Offset -200 0 200 mV

SHPBFM1 2nd Harmonic Sinuswave @ 1.6MHz, 0.2mV

VMAXFM

Maximum Output Voltage

= 22kΩ

ADJ

to 600µVPP@ LP input pins 1 V

PP

to 600µVPP@ SP input pins 4 V

PP

on inputs 66 70 74 dB

PP

Input grounded via I
@ 600kHz, BW = 10kHz

OUT

Pin

PP

PP

Sinuswave @ 1.6MHz, 2nd harmonic
< -35dB

0.4 0.5 0.6

-45 -40 dB

-45 -40 dB

2V

nV

√Hz

pA

√Hz

Ω

PP

5728-05.TBL

5/11

STV5728

ELECTRICAL CHARACTERISTICS (T

=25oC, unlessotherwise specified)(continued)

amb

Record Mode

V

CC

=5V,V

CCFM

=5V,R

= 22kΩ, SWR = 5V,CCOM = 470nF,CCOM1 = 470nF,RRCY = 2.2kΩ,

ADJ

RRCC = 8.2kΩ, RFMIN= 1.5kΩ, SWFMH = 5V,SWM =0V (SP Mode).
Load 10µH//1kΩfor each simulated head.
Damping networkof 1nF/620Ω connectedbetween each recordoutput and Ground.

Symbol Parameter Test Conditions Min. Typ. Max. Unit

RECORD AMPLIFIER (Video)

I

CC2

IHA0
IHA2 2nd Harmonic VRCY = 300mV

IMAX Maximum Current @ 4MHz, 2nd harmonic <35dB 35 mA
BWRECL Attenuation at 100kHz Reference level @ 600kHz -1 0 1 dB
BWRECH Attenuation at 8MHz Reference level @ 4MHz -2 0 1 dB

TRSP Transconductance SP V

TRLP Transconductance LP V

RSAT OutputStage Resistance @ 4MHz 5 11 20 Ω

TRR Transconductance Ratio TRSP / TRLP 0.8 1 1.2 dB

RIOUT Impedance on I

VTRIVR Voltage on TRIV Pin 2 2.4 2.8 V

RECORD AMPLIFIER (FM HIFI)

I

CCFM2

IHFM0 DC Currentthrough I
IHFM1 Fundamental VFMREC = 170mV
IHFM2 2nd Harmonic VRCY = 170mVPP@ 1.6MHz -52 -46 -40 dB

BWRECL Attenuation at 1MHz Reference level @ 1.6MHz, AGC locked -1 0 1 dB

BWFMRH Attenuation at 2MHz Reference level @ 1.6MHz, AGC locked -1 0 1 dB

DVLRFM record AGC Sensibility V
RSATFM Output Stage Resistance I = 10mA 7 15 50 Ω

ATT1 mute V

RIOUTFM Impedance on I

IREC+ CAGC SinkCurrent 50 100 150 µA

IREC- CAGC SourceCurrent -150 -100 -50 µA

Current Supply 60 74 86 mA
DC Current through I

I

OUTLP

OUTSP(IOUTLP

or

OUTSP

@ 4MHz -49 -40 dB

PP

= 300mVPP@ 4MHz 66 70 74 mA/V

IN

= 300mVPP@ 4MHz, SWM = 5V 60 64 68 mA/V

IN

27 42 54 mA

) ∆V = 1V 40 100 300 kΩ

Current Supply 48 76 104 mA

26 49 72 mA

OUTFM

OUT

@ 1.6MHz 32 37 42 mA

PP

= 170mV

IN

= 300mVPP@ F = 4MHz 40 60 dB

IN

V=1V 6 36 72 k

∆

3dB @ 1.6MHz -1 0 1 dB

±

PP

PP

PP

Ω

5728-06.TBL

6/11

STV5728

ELECTRICAL CHARACTERISTICS (T

=25oC, unlessotherwise specified)(continued)

amb

Record Mode (continued)
V

CC

=5V,V

CCFM

=5V,R

= 22kΩ, SWR = 5V,CCOM = 470nF,CCOM1 = 470nF,RRCY = 2.2kΩ,

ADJ

RRCC = 8.2kΩ, RFMIN= 1.5kΩ, SWFMH = 5V,SWM =0V (SP Mode).
Load 10µH//1kΩfor each simulated head.
Damping networkof 1nF/620Ω connectedbetween each recordoutput and Ground.

Symbol Parameter Test Conditions Min. Typ. Max. Unit

SWITCHING LEVELS (Video)

VSWIN1 SWIN Input Threshold Selects head H2SP 0 0.4 V
VSWIN2 SWIN Input Threshold Selects head H1SP 1 2.2 V
VSWIN3 SWIN Input Threshold Selects head H1LP 2.8 4 V
VSWIN4 SWIN Input Threshold Selects head H2LP 4.6 5 V

ISWIN1 VSWIN = 0V Input current -1 -0.5 -0.1
ISWIN2 VSWIN = 1.5V Input current 0.1 0.4 2 µA
ISWIN3 VSWIN = 3.5V Input current 0.1 0.4 2 µA
ISWIN4 VSWIN = 5V Input current 0.1 0.5 2

VSWRH SWR InputThreshold Selects record mode 3.5 5 V

VSWRL SWR InputThreshold Selects playback mode 0 1.5 V

ISWRH VSWR = 5V Input current 0 0.1 5

ISWRL VSWR = 0V Input current -10 -5 -0.5 µA

T

ON

T1

T2

T3

T4

SWITCHING LEVELS (Video)

VFMH SWFMH Input Threshold 3.5 5 V

VFML SWFMH Input Threshold 0 1.5 V
T

ONFM

T1FM

T2FM

T3FM

T4FM

ISWFMHH VSWFMR = 5V Inputcurrent 0 0.1 5

ISWFMHL VSWFMH = 0V Inputcurrent -10 -5 -0.5 µA

Switching Delay Signal appears on CPB 500 ns
Delay from Playback to Record :

Signal Disappears on PinCPB
Delay from Record to Playback :

Signal Appears on PinCPB

1

800 µs

DelayfromPlaybackto Record:
Signal Appears on PinI
I

OUTLP

OUTSP

or

20 µs

Delay from Record to Playback :
Signal Disappears onPin I
orI

OUTLP

OUTSP

1 µs

Switching Delay Signal appears on FMPB 500 ns
Delay from Playback to Record :

Signal Disappears on PinFMPB
Delay from Record to Playback :

Signal Appears on PinFMPB
DelayfromPlaybackto Record:

Signal Appears on PinI

OUTFM

Delay from Record to Playback :
Signal Disappears onPin I

OUTFM

05

400 µs

20 µs

1

A

µ

A

µ

A

µ

s

µ

s

µ

s

µ

A

µ

5728-07.TBL

7/11

STV5728

INPUTS/OUTPUTS EQUIVALENT INTERNAL DIAGRAMS
Figure1

pins 1/3/7/9/12/14

H1SP/H2SP/

H1LP/H2LP/

H1FM/H2FM

V

V

CC

CC

54kΩ

Figure 2

I

OUTSP/IOUTLP

CCOM/CCOM2

I

OUTFM

Pins 4/6/11

Pins 5/10

/

V

CC

13.5V

66

Ω

V

CC

Figure3

Figure5

FMPB/YPB/CPB

Pins 17/22/24

5728-05.EPS

5728-06.EPS

Figure 4

V

CCFM

15

V

CC

SWFMH/SWR

Pins16/28

5728-07.EPS

V

CC

Ω

4k

5728-08.EPS

Figure 6

V

CC

V

CC

V

CC

V

CC

FMRIN/RECIN

Pins 18/25

8/11

5728-09.EPS

5728-10.EPS

INPUTS/OUTPUTS EQUIVALENT INTERNAL DIAGRAMS(continued)
Figure7

CAGC

V

CC

V

CC

19

V

CC

Figure 8

ENV

STV5728

V

CC

V

CC

20

1500Ω

1500Ω

Figure9

TRIV

5728-11.EPS

5728-12.EPS

Figure 10

V

CC

V

27

CC

120

Ω

5728-14.EPS

V

CC

21

V

CC

2.4V

5728-13.EPS

SWIN

9/11

STV5728

TYPICALAPPLICATION

1nF

1nF

620

620Ω1nF

620

Ω

Ω

H1S P

H2S P

SP HEADS

470nF

CCOM

LP HEADS

H2LP

H1LP

470nF

CCOM2

HIFIHEADS

H1FM

H2FM

1

2

3

4

5

6

7

8

9

10 19

11

12

13

14

60dB

60dB

60dB

60dB

70dB

70dB

Detector

Re cord Refere nce

Re cord AGC

REC

PB

H2LP
H1LP
H1S P
H2S P

Record
Amplificator

Playback
AGC

Current (FM)

PB REC MUTE
H1FM OFF
H2FM ON

STV5728

22nF

22nF

F100nF

SWR
SWH

SWM

YREC

CREC
CPB

YPB

TRIV (ATR)
ENV

Envelope Comp

FMREC

FMPB

SWFMH

V

CC

5728-04.EPS

28

27

+5V

26

25

24

23

22

21

20

18

17

16

+5V

15

22k

8.2k

Rrcy : 2.2k

Rrcc : 8.2k

R

: 22kΩ

ADJ

22nF

Rfmin : 12k

Ω

Ω

CAGC

Ω

22

Ω

Ω

22nF

22µH

SWITCHTABLE(Video)

SWR SWM SWH Channel ENVC

L (PB)

H (REC)

SWITCHTABLE (FMHIFI)

SWR SWFMH Channel Record Mute

L

H

10/11

L

H

L

H

L H2SP

H H1SP

L H1LP

H H2LP

L

H

L

H

SP

LP

HIGH if LP < SP

LOW if LP > SP

5728-08.TBL

L H2FM
H H1FM
LON
H OFF

5728-09.TBL

PACKAGE MECHANICALDATA

28 PINS - PLASTICMICROPACKAGE(SO)

STV5728

Dimensions

Min. Typ. Max. Min. Typ. Max.

Millimeters Inches

A 2.65 0.104

a1 0.1 0.2 0.004 0.0078

b 0.35 0.49 0.014 0.019

b1 0.23 0.32 0.009 0.013

C 0.5 0.020

c1 45

o

(Typ.)
D 17.7 18.1 0.697 0.713
E 10 10.65 0.394 0.419

e 1.27 0.050

e3 16.51 0.65

F 7.4 7.6 0.291 0.299
L 0.4 1.27 0.016 0.050

S8

Informationfurnished is believed to be accurateand reliable.However, SGS-THOMSONMicr oelectronics assumes no responsibility
for the consequences of use of such information nor for any infringement of patents or other rights of third parties whichmay result
from itsuse. No licenceis grantedby implication or otherwise underany patent or patent rights of SGS-THOMSON Microelectronics.
Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all
informationpreviouslysupplied. SGS-THOMSON Microelectronicsproducts arenot authorized for useas critical components inlife
support devices or systems without express written approval of SGS-THOMSON Microelectronics.

 1997SGS-THOMSON Microelectronics - All Rights Reserved

2

Purchase of I

2

I

C Patent. Rights to use these components in a I2C system,is grantedprovided that the system conforms to

Australia - Brazil - Canada - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco

The Netherlands - Singapore- Spain - Sweden - Switzerland - Taiwan - Thailand - UnitedKingdom - U.S.A.

C Components of SGS-THOMSON Microelectronics, conveys a license under the Philips

2

the I

C Standard Specifications as defined by Philips.

SGS-THOMSON Microelectronics GROUP OF COMPANIES

o

(Max.)

PM-SO28.EPS

SO28C.TBL

11/11