STV5728 Fast Delivery |IC PHOENIX CO.,LIMITED

STV5728 ,4-HEAD VIDEO AND 2-HEADS HIFI AUDIO PLAYBACK AND RECORD AMPLIFIER FOR VCRELECTRICAL CHARACTERISTICS (T =25 C, unless otherwisespecified)ambPlayback ModeVCC = 5V, no load on ..
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STV5728
4-HEAD VIDEO AND 2-HEADS HIFI AUDIO PLAYBACK AND RECORD AMPLIFIER FOR VCR
STV5728
4-HEAD VIDEO AND 2-HEADS HIFI AUDIO
PLAYBACK AND RECORD AMPLIFIER FOR VCR
May 1997
SO28
(Plastic Package)
ORDER CODE: STV5728 ONE5V POWER SUPPLY. PLAYBACK/RECORD MODE SELECTION
THROUGHA LOGIC INPUT. PINNING COMPATIBLE WITH STV5725 AND
STV5727. SO28 PACKAGE
PLAYBACK MODE. LOW NOISE AND WIDE BAND AMPLIFIERS
FOR4 VIDEO HEADS. AUTOMATIC OFFSET CANCELLATION
BETWEEN THE2 SELECTED HEADS. ONE PLAYBACK OUTPUT WITH AGC. ONE PLAYBACK OUTPUT (60dBCONSTANT
GAIN). ONE OUTPUT FOR AUTOMATIC VIDEO
TRACKING. SP/LP ENVELOPECOMPARATOR OUTPUT. LOW NOISE AMPLIFIERSFOR2 HIFI HEADS. HIFI OUTPUT GAIN (70dB)
RECORD MODE. TRANSCONDUCTANCE AMPLIFIER FOR
VIDEO. AGC AMPLIFIER FOR HIFI
DESCRIPTION
STV5728is intendedfor4 headsVCR applications
with HIFI.It includesall the electricalfunctions nec-
essaryto achieveplay-backandrecordprocessing.
Recordor PlaybackMode canbe selectedthrough
SWR Pin. SWH allowsto select the video head
input (H1SPor H2SP,H1LPor H2LP), while SWM
will select the mode SPor LP. The SWFMH will
selecttheFM input headsin Playbackandwill mute
the HIFI record amplifierin RecordMode.
Playback Mode (Video)
Signals appliedon H1SP,H2SP, H1LP and H2LP
input pins will be amplifiedby 60dB voltage gain.
IOUTSP and IOUTLP Pins are AC short-circuitedto
ground. The input signal canbe selected through
SWH and SWM inputs and the corresponding out-
put signal willbe availableon Pin CPB. The offset
voltage between the two selected headsis auto-
matically cancelledafter32 switchinghead cycles. constant output signal will be available on Pin
YPB thanksto an AGC function (Automatic Gain
Control). The time constantof the AGCis deter-
minedby the capacitor value connectedto CAGC
Pin. For Automatic Tracking,a signal whichisa
functionof the selected input signal amplitudeis
present on Pin TRIV. For Trick Mode,a signal
resulting from the comparisonof the input signal
amplitudeis availableon ENVC Pin.
IOUTLP
SWR
SWIN
VCC
RECIN
CPB
TRIV
ENV
CAGC
H1SP
GNDSP
H2SP
H2LP
CCOM
IOUTSP
GNDLP
CCOM2
H1LP
GND
YPB OUTFM
H1FM
GNDFM
H2FM
FMPB
SWFMH
VCCFM
FMRIN
PIN CONNECTIONS
1/11
Record Mode (Video)
Thecurrent inputappliedon RECINPinisamplified
througha transconductanceamplifier.Special care
has been takento speed up commutation from
Playbackto Record and from Recordto Playback,
avoidingspikesthroughthe loads (the rotary trans-
formers).The recording current level inLP modeis
0.9 time the valueof SP one.
Playback Mode (FM HIFI)
Signalsappliedon H1FMand H2FMinput Pinswill amplifiedby 70dB voltage gain. IOUTFM Pinis short-circuitedto groundby CCOM1. The input
signal canbe selected through SWFMH input and
the correspondingoutput signal willbe availableon
Pin FMPB.
Record Mode (HIFI)
The currentinput appliedonFMRINPinis amplified
throughan Automatic Gain Control amplifier. The
recording level canbe adjusted thanksto the RADJ
resistanceconnectedto TRIV Pin.Special care has
beentakentospeedupcommutationfromPlayback Record and from Recordto Playback, avoiding
spikes through the loads (the rotary transformers). 19
60dB
60dB
Detector
Record
Amplificator
STV5728
H1SP
H2SP HEADS
CCOM
SWR
SWH
SWM
VCC
YREC
CREC
CPB
YPB
TRIV(ATR)
+5V
Rrcy
Rrcc
REC
H2LP
H1LP
H1SP
H2SP
H2LP
H1LP HEADS
60dB
60dB 21
Playback
AGC
CAGC
ENV
Envelope Comp
8.2kΩ
22kΩ
CCOM2
H1FM
H2FM
70dB
70dB
HIFIHEADS
Record Reference
Current (FM)
RADJ
FMREC
Rfmin
FMPB17
SWFMH16
VCCFM15 +5V
Record AGC
H1FM OFF
H2FM ON REC MUTE
BLOCK DIAGRAM
FUNCTIONAL DESCRIPTION
STV5728
2/11
Current
(mA 20 30 40ADJ Value (kΩ)
RecordingLevel
Figure1: FM Record Current Amplifier; Record Current Adjustment Curve certain ratio must be kept between RADJ and
RFMINto insure maximum performances with an
average FM recording input voltage around
170mVPP. Some examplesare givenin the follow-
ing tables.If the averageinput voltageis higher(or
lower), the RFMRIN value mustbe increased (de-
creased) proportionnaly.
SET-UP RADJ RFMRIN
(1) 15kΩ 1kΩ
(2) 22kΩ 1.5kΩ
(3) 33kΩ 2kΩ
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
VCC Power Supply Voltage 6 V Junction Temperature 150 oC
Toper Operating Temperature 0, +70 oC
THERMAL DATA
Symbol Parameter Value Unit
Rth(j-a) Junction-ambient Thermal Resistance
(IC soldedonthePC board)
Max. 75 o C/W
RECOMMENDED OPERATING CHARACTERISTICS
Symbol Parameter Min. Typ. Max. Unit
VCC Power Supply 4.75 5 5.25 V
VCCFM FM HIFI Power Supply 4.75 5 5.25 V
CAGC AGC Time Constant 4.7 22 nF
CCOM Decoupling Capacitor 4.7 470 nF
CCOM1 Decoupling Capacitor 4.7 470 nF
RADJ Record Current Adjustment Resistor 15 22 33 kΩ
STV5728
3/11
ELECTRICAL CHARACTERISTICS (Tamb =25oC, unless otherwisespecified)
Playback Mode
VCC= 5V,no loadon YPB and CPB Pins, RADJ= 22kΩ, after32 SWH (SWitching Head) cycles.
Symbol Parameter Test Conditions Min. Typ. Max. Unit
PLAYBACK AMPLIFIER
ICC1 Supply Current 40 48 53 mA
GPB Playback Gain Sinewave 600kHz, 0.4mVPPon inputs 58 60 62 dB Equivalent Voltage Noise Input groundedvia IOUT Pin@ 600kHz,= 10kHz 0.5 0.6 0.7 nVHz Equivalent Input Current Input open@ 6MHz, BW= 10kHz 1.4 2 2.6 pAHz
CRT1 Crosstalk Between SP Channels
(orLP Channels) Sinewave@ 4MHz, 0.4mVPP -41 -39 dB
CRT2 Crosstalk Sinewave@ 600kHz, 0.4mVPP -50 dB
CRT3 Crosstalk Between SP1 and LP2
Channels(or SP2to LP1Channels) Sinewave@ 6MHz, 0.4mVPP -60 -50 dB
RPBSW Playback Switchon Resistor @ 6MHz 0.8 2.5 18 Ω
BWLCF Attenuation@ 100kHz Reference level@ 600kHz -1 0 1 dB
BWHCF Attenuation@ 8MHz Reference level@ 4MHz -3 1 0 dB
CIN Input Capacitance @ 6MHz 22 27 32 pF
RIN Input Resistance @ 6MHz 500 730 950 Ω
ZCPB Output Resistance DC 5 14 50 Ω
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, 0.4mVPP -43 -37 dB
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, 0.4mVPPon input 160 200 250 mVPP
SHPB2 Second Harmonic Sinuswave@ 4MHz, 0.4mVPPon input -44 -40 dB
IPB+ CAGC Sink Current 50 100 150 μA
IPB- CAGC SourceCurrent -150 -100 -50 μA
DVLP AGC Sensitivity Sinuswave@ 4MHz, 0.2mVPPon input,
-5dB and +6dB -1 0 1 dB
TRIV FUNCTION
VTRIV0 Output Level(1) SP mode, Vcpb= 0mVPP@ 4MHz 0.05 0.28 0.7 V
VTRIV4 Output Level(4) LP mode, Vcpb= 600mVPP@ 4MHz 4.1 V
VTRIV5 Output Level(5) SP mode, Vcpb= 100mVPP@ 4MHz 1.33 V
VTRIV6 Output Level(6) SP mode, Vcpb= 200mVPP@ 4MHz 2.27 V
VTRIV7 Output Level(7) LP mode, Vcpb= 100mVPP@ 4MHz 1.4 1.8 2.2 V
VTRIV8 Output Level(8) LP mode, Vcpb= 200mVPP@ 4MHz 3.11 V
VTRIV9 Output Level(9) SP mode, Vcpb= 300mVPP@ 4MHz 2.95 V
VTRIV10 Output Level (10) SP mode, Vcpb= 600mVPP@ 4MHz 3.85 V
FTRIV1 Response Lower Frequency,
Attenuation@ 1MHz
Reference: SPmode, Vcpb= 100mVPP 4MHz -6 dB
FTRIV2 Response Higher Frequency,
Attenuation@ 8MHz
Reference: SPmode, Vcpb= 100mVPP 4MHz -1 dB
STV5728
4/11
ELECTRICAL CHARACTERISTICS (Tamb =25oC, unlessotherwise specified) (continued)
Playback Mode (continued)
VCC= 5V,no loadon YPB and CPB Pins, RADJ= 22kΩ
Symbol Parameter Test Conditions Min. Typ. Max. Unit
SP/LP ENVELOPE DETECTOR
ROH Output Resistance@ ENVC Sinewave 600μVPP@4 MHzonH2SP 0.65 1.6 2.8 kΩ
ROL Output Resistance@ ENVC Sinewave 600μVPP@4 MHzonH1LP 0.65 1.6 2.8 kΩ
VENVCH Output Level 4 5 V
VENVCL Output Level 0 1 V
SENS1 Sensibility 100μVPPto 600μVPP@LP input pins 1 V
SENS2 Sensibility 100μVPPto 600μVPP@SP input pins 4 V
PLAYBACK AMPLIFIER (HIFI)
ICCFM1 Supply Current 24 28 32 mA
GPBFM Playback Gain Sinewave 1.6MHz, 0.2mVPPon inputs 66 70 74 dB
ENFM Equivalent Voltage Noise Input groundedvia IOUT Pin 600kHz, BW= 10kHz 0.4 0.5 0.6 nVHz
INFM Equivalent Input Current Input open@ 1.6MHz, BW= 10kHz 2.4 3.5 5 pAHz
CRTFM1 Crosstalk Sinewave@ 1.6MHz, 0.2mVPP -45 -40 dB
RPBFMSW Playback Switchon Resistor @ 6MHz 1.1 2.4 5 Ω
BWFMLCF Attenuation@ 1MHz Reference level@ 1.6MHz -1 0 1 dB
BWFMHCF Attenuation@ 2MHz Reference level@ 1.6MHz -1 0 1 dB
CINFM Input Capacitance @ 1.6MHz 35 pF
RINFM Input Resistance @ 1.6MHz 100 550 1000 Ω
ZCPBFM Output Resistance DC 5 24 50 Ω
VDCPBFM DC Levelon Pin YFMPB 1.4 1.8 2.5 V
DVDCFM Head Switch Offset -200 0 200 mV
SHPBFM1 2nd Harmonic Sinuswave@ 1.6MHz, 0.2mVPP -45 -40 dB
VMAXFM Maximum OutputVoltage Sinuswave@ 1.6MHz, 2nd harmonic -35dB 2VPP
STV5728
5/11
ELECTRICAL CHARACTERISTICS (Tamb =25oC, unlessotherwise specified) (continued)
Record Mode
VCC =5V, VCCFM =5V,RADJ= 22kΩ, SWR= 5V, CCOM= 470nF,CCOM1= 470nF,RRCY= 2.2kΩ,
RRCC= 8.2kΩ, RFMIN= 1.5kΩ, SWFMH= 5V, SWM= 0V (SP Mode).
Load 10μH//1kΩ for each simulated head.
Damping networkof 1nF/620Ω connectedbetween each record output and Ground.
Symbol Parameter Test Conditions Min. Typ. Max. Unit
RECORD AMPLIFIER (Video)
ICC2 Current Supply 60 74 86 mA
IHA0 DC Current through IOUTSPor
IOUTLP 27 42 54 mA
IHA2 2nd Harmonic VRCY= 300mVPP@ 4MHz -49 -40 dB
IMAX Maximum Current @ 4MHz, 2nd harmonic< 35dB 35 mAPP
BWRECL Attenuationat 100kHz Reference level@ 600kHz -1 0 1 dB
BWRECH Attenuationat 8MHz Reference level@ 4MHz -2 0 1 dB
TRSP Transconductance SP VIN= 300mVPP@ 4MHz 66 70 74 mA/V
TRLP TransconductanceLP VIN= 300mVPP@ 4MHz, SWM=5V 60 64 68 mA/V
RSAT Output Stage Resistance @ 4MHz 5 11 20 Ω
TRR Transconductance Ratio TRSP/ TRLP 0.8 1 1.2 dB
RIOUT Impedanceon IOUTSP (IOUTLP) ΔV=1V 40 100 300 kΩ
VTRIVR Voltageon TRIV Pin 2 2.4 2.8 V
RECORD AMPLIFIER (FM HIFI)
ICCFM2 Current Supply 48 76 104 mA
IHFM0 DC Current through IOUT 26 49 72 mA
IHFM1 Fundamental VFMREC= 170mVPP@ 1.6MHz 32 37 42 mAPP
IHFM2 2nd Harmonic VRCY= 170mVPP@ 1.6MHz -52 -46 -40 dB
BWRECL Attenuationat 1MHz Reference level@ 1.6MHz, AGC locked -1 0 1 dB
BWFMRH Attenuationat 2MHz Reference level@ 1.6MHz, AGC locked -1 0 1 dB
DVLRFM record AGC Sensibility VIN= 170mVPP ±3dB@ 1.6MHz -1 0 1 dB
RSATFM Output Stage Resistance I= 10mA 7 15 50 Ω
ATT1 mute VIN= 300mVPP@F= 4MHz 40 60 dB
RIOUTFM Impedanceon IOUTFM ΔV=1V 6 36 72 kΩ
IREC+ CAGC Sink Current 50 100 150 μA
IREC- CAGC SourceCurrent -150 -100 -50 μA
STV5728
6/11

Partno	Mfg	Dc	Qty	Available	Descript
STV5728	ST	N/a	4	avai	4-HEAD VIDEO AND 2-HEADS HIFI AUDIO PLAYBACK AND RECORD AMPLIFIER FOR VCR