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STV5715
ADVANCED 2-HEAD PLAY-BACK AND RECORD AMPLIFIER FOR VCR
RECORD MODE ONE INTEGRATED I/I CONVERTER WITH ACCURATE CONTROL OF TRANSCONDUCTANCE AUTOMATIC PLAY-BACK/RECORD SWITCHING BY SCANNING OF RECORD SUPPLY PLAY-BACK LOOP INHIBITION
. . . . . . . . .
PLAY-BACK MODE LOW NOISE AND WIDE BAND AMPLIFIERS FOR 2 HEADS AUTOMATIC OFFSET CANCELLATION BETWEEN THE 2 SELECTED HEADS ONE PLAY-BACK OUTPUT WITHOUT AGC ONE PLAY-BACK OUTPUT INCLUDING AGC RECORD AMPLIFIER INHIBITION AND RECORD OUTPUT GROUNDED OUTPUT FOR TRACKING VIDEO INFORMATION (TRIV) WITH ADJUSTABLE GAIN
SO20 LARGE (Plastic Micropackage) ORDER CODE : STV5715
PIN DESCRIPTION
GND1 VREC CCAS I OUT H1 GND2 H2 C2 C1 CAGC
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
GND3 TRIVADJ VMES SW M SW H CHROMA VIN LUMA VCC TRIV
5715-01.EPS
DESCRIPTION The STV5715 is an advanced two head record and play-back amplifier for VCR.
November 1993 1/9
STV5715
BLOCK DIAGRAM
CHROMA TRIVADJ LUMA GND3 SW M SW H
VMES
20
19
18
17
16
15
14
13
12
11
TRIV
VCC
VIN
STV5715
LSP
SW H
H L
SW M
HLP
TRIVADJ
1 GND1
2 VREC
3 CCAS
4 I OUT
5 H1
6 GND2
7 H2
8 C2
9 C1
10
5715-02.EPS 5715-01.TBL
FUNCTIONAL DESCRIPTION STV5715 is intended for 2 heads VCR applications. It includes all the electrical functions necessary to achieve play-back and record processing for VHS and S-VHS applications (10MHz bandwidth). High performancetechnologyallows very low noise levels (current and voltage), which are frequency independant in all the frequency range. In playback mode a special feature suppresses the DC offset when switching the two channels. Optimized play-back output stage gives to the STV5715 large capability to drive directly a coaxial cable in order to reduce number of external components. Two play-back outputs are availabe : one, dedicated to Chroma processing, is a 60dB voltage amplifier output, the other, dedicatedto Luma processing, is phase opposite signal with a constant AC output level of 200mVPP at 3.8MHz signal. A tracking information for video signal (TRIV) is Luma amplitude proportional and allows automatic ABSOLUTE MAXIMUM RATINGS
Symbol VCC VREC TJ Toper 2/9 Parameter Power Supply Voltage Power Supply Voltage Record Junction Temperature Operating Temperature
phase correction. The transfer function has a gain of 2.5dB higher when a LP channel is selected. Adding to this, a gain control bloc allows to modify the gain ( 6dB) of the TRIV function for all the channels by applying a bias on pin TRIVADJ. An automatic scanning of record supply voltage permits STV5715 automatically switching either in play-back or in record mode. The switching threshold voltage is fixed to a value which forbids high current peaking through the heads. During play-back mode, record output is grounded via an internal transistor and during record mode preamplifiers are turned off. There is one output current for two recording heads, the DC current and the AC characteristics can be very precisely controlled with accurate external resistors. If recommended resistances are used, a 3% transconductanceaccuracy is guaranteed. STV5715 is fully protected against ESD.
CAGC
Value 6 15 +150 0, +70
Unit V V o C o C
STV5715
THERMAL DATA
Symbol R th (j-a) Parameter Junction-ambient Thermal Resistance Typ. Value 70 Unit
o
C/W
RECOMMENDED OPERATING CONDITIONS (Tamb = 25oC)
Symbol VCC VREC CAGC Power Supply Voltage Power Supply Voltage Record Capacitance at Pin CAGC Parameter Min. 4.5 4.75 4.7 Typ. 5 11.3 Max. 5.5 12.6 Unit V nF
5715-03.TBL 5715-05.TBL 5715-04.TBL
V
ELECTRICAL OPERATING CHARACTERISTICS (Tamb = 25oC unless otherwise specified) Power Consumption
Parameter VCC VREC Total Consumption (2)
Notes : 1. 2.
Play-Back Typ. 42mA 0mA 210mW 286mW Max. 52mA 0mA
Record (1) Typ. 25mA 25mA 350mW 521mW Max. 38mA 33mA
VCC = 5V, V REC = 9V VCC = 5.5V, V REC = 9.45V
R1 = 18 Taking in account only the consumption through the IC. A great care should be taken to the maximum power consumption : VREC can be increased to 12.6V if the DC current flowing through the head is reduced. This can be done by increasing R1 value. VREC can be reduced as long as voltage on Pin IOUT does not fall below 1V (to avoid output stage saturation).
Play-back Mode VCC = 5V, no load on Pins CHROMA,LUMA
Symbol ICC1 Parameter Supply Current Test Conditions Min. 32 Typ. Max. 42 52 Unit mA
CHROMA OUTPUT (no AGC) GPB GPB1 Pre-amplification Gain Difference of Output Signal on Pin CHROMA between Channel 1 and Channel 2 Equivalent Input Voltage Noise Level Equivalent Input Current Noise Crosstalk Playback Switch-on Resistance Bandwidth Cut-off Frequency FLCPB1 FHCPB1 CIN RIN ZCPB Input Capacitance Pins H1, H2 Pre-amplifier Input Resistance Pins H1, H2 Output ImpedancePin CHROMA Sinewave 600 kHz, 400mVPP on output Input on Pin H1 or H2 Sinewave 600kHz 0.4mVPP on inputs H1 and H2 Input grounded via switching transistor on Pins H1, H2, f = 600kHz Pins H1, H2 Sinewave 3.8MHz, 400VPP on input, All the other inputs loaded with Rg = 15 I = 10mA -3dB attenuation 50 in parallel on the input, 0dB at 600kHz Low High At 5MHz At 3.8MHz DC 400 56 -1.2 59 0 62 1.2 dB dB nV Hz pA Hz -40 5.0 dB
eN iN CRT RPB
0.6 1.7 -45 2.0
0.1 8 13.5 30 600 24 40 900 50
MHz MHz pF
3/9
5715-02.TBL
STV5715
ELECTRICAL OPERATING CHARACTERISTICS (Tamb = 25oC unless otherwise specified) (continued) Play-back Mode VCC = 5V, no load on Pins CHROMA,LUMA
Symbol Parameter Test Conditions Min. Typ. Max. Unit CHROMA OUTPUT (no AGC) (continued) VDCPB1 VDC SH PB1 DC Level at Play-back Output on Pin CHROMA Head Switch Offset Pin CHROMA Second Harmonic Play-back Output Sinewave 3.8MHz Pin CHROMA 400VPP on input 1.5 -100 1.9 0 -45 2.3 100 -40 V mV dB
LUMA OUTPUT (with AGC) ZLPB VDCPB2 Output Impedance DC Level Bandwidth Cut-off Frequency FLCPB2 FHCPB2 VLPB VLPB SH PB2 CAGC I+ ITRIV ITRIV VTRIV1 VTRIV2 VTRIV3 VTRIV4 VTRIV5 VTRIV6 VTRIV7 fTRIV1 fTRIV2 GTRIV Downloading Current Output Level (1) Output Level (2) Output Level (3) Output Level (4) Output Level (5) Output Level (6) Output Level (7) Response Lower Frequency Response Higher Frequency High Level Input With no signal, VTRIVADJ = 2.5V Mode LP (SW-M = high) VCHROMA = 100mVPP at 4MHz VTRIVADJ = 2.5V, Mode LP (SW-M = high) 200 0.3 1.91 300 0.6 2.31 400 1.5 2.91 A V V V V V V V dB dB V/V
5715-06.TBL
DC 1.1 -3dB attenuation 50 in parallel on the input, AGC locked, 0dB at 3.8MHz Low High Input signal 200VPP at 3.8MHz on Pins H1, H2 Input signal 200VPP at +6dB or -5dB on Pins H1, H2
30 1.5
50 2.1
V
0.1 10 140 -2 -44 12.5 200 270 +1 -39
MHz MHz mVPP dB dB
Output Amplitude AGC Control Sensitivity
Second Harmonic Play-back Output Input Signal 3.8MHz 400VPP on Pins H1, H2
Positive Output Current Negative Output Current
Input Signal 3.8MHz 200VPP on H1 Input Signal 3.8MHz 200VPP on H1
15 -50
30 -30
50 -15
A A
3.525 3.725 3.985 VCHROMA = 400mVPP at 4MHz VTRIVADJ = 2.5V, Mode LP (SW-M = high) VCHROMA = 100mVPP at 4MHz VTRIVADJ = 1V, Mode LP (SW-M = high) VCHROMA = 100mVPP at 4MHz VTRIVADJ = 4V, Mode LP (SW-M = high) VCHROMA = 400mVPP at 4MHz VTRIVADJ = 2.5V, Mode SP (SW-M = low) VCHROMA = 100mVPP at 4MHz VTRIVADJ = 2.5V, Mode SP (SW-M = low) VCHROMA = 400mVPP at 4MHz and 1MHz VTRIVADJ = 2.5V, Mode LP (SW-M = high) VCHROMA = 400mVPP at 8MHz and 4MHz VTRIVADJ = 2.5V, Mode LP (SW-M = high) LP : VCHROMA = 100mVPP, 300mVPP at 4MHz, VTRIVADJ = 2.5V 1.110 1.610 2.311 2.875 3.075 3.335 3.215 3.415 3.675 1.65 -10 -2.5 4 2.05 -6 -1 5.5 2.65 -3 -0 7
4/9
STV5715
ELECTRICAL OPERATING CHARACTERISTICS (Tamb = 25oC unless otherwise specified) (continued) Record Mode VREC = 11.3V, VCC = 5V, Load resistor 50 on Pin IOUT Transconductance network defined by : R1 = 18, 1% R2 = 1.5k, 1% R3 = 1.5k, 1%
Symbol IREC ICC2 Imax TR SHREC Current Supply Max. Record Current Transconductance Second Harmonic Bandwidth Cut-off Frequency Pin IOUT FLCR
FHCR
Pins GND/VMES Pins VMES/VIN Pin VIN
Min. 17 15 35 45 55 -54 65 -38 Typ. Max. 25 25 33 38 Unit mA mA mAPP mA/V dB
Parameter
Test Conditions VREC = 11.3V VCC = 5V 3.8MHz VIN = 300mVPP Output Current, 30mAPP at 3.8MHz at Pin IOUT -3dB attenuation, 0dB at 3.8MHz Output current 30mAPP Low High Equivalent value of R3 resistor
10 500 700 900
RVIN
Input Resistance on Pin VIN
Switching Levels
Symbol VSWHH VSWHL ISWHH ISWHL VSWMH VSWML ISWMH ISWML Selection Pin SW-H Transient Response tON tOFF VTH1 Inhibition Threshold Hysteresis for Switching from Play-back to record on Pin VREC Inhibition Threshold Hysteresis for Switching from Record to Play-back on Pin VREC Mode Selection Pin SW-M Head Selection Pin SW-H Parameter Test Conditions Head number 1 Head number 2 Input current (5V) Output current (0V) LP Mode SP mode Input current (5V) Output current (0V) Output signal appears on Pin CHROMA Delay time selection ON Delay time selection OFF VCC = 5V 0.15 100 100 0.3 500 500 0.5 V Min. 2.4 0 5 -50 2.4 0 5 -50 15 -20 15 -20 Typ. Max. VCC 1.5 50 0 5 1.5 50 0 Unit V V A A V V A A ns
VTH2
VCC = 5V
80
mV s ms ms ms
5715-08.TBL
t1 t2 t3 t4 Transient Response of Record Scanning on Pin VREC
Delay from play-back to record (signal disappears on Pin CHROMA) Delay from record to play-back (signal appears on Pin CHROMA) Delay from play-back to record (signal appears on Pin IOUT) Delay from record to play-back (signal disappears on Pin IOUT)
10 32* 0.2 11*
* Depending on capacitance on Pin VREC ; above values are according to the application diagram at page 9.
5/9
5715-07.TBL
0.1
MHz MHz
STV5715
INPUT/OUTPUTS EQUIVALENT INTERNAL DIAGRAM Pins : C1, C2 Pins : SW-H, SW-M
VCC
VCC 7.5k
10k
15k
47k
10k
400
5715-03.EPS
Pins : Chroma, Luma
V CC 4k 5pF
Pin : VMES
VREC
800
1.5pF 500
0.5pF
6pF
75 18
5715-05.EPS 5715-06.EPS
Pin : VIN
Pin : CAGC
V CC
V CC
V CC
750
750 6pF
2.4V
5715-07.EPS 5715-08.EPS
6/9
5715-04.EPS
1k
STV5715
INPUT/OUTPUTS EQUIVALENT INTERNAL DIAGRAM (continued) Pin : TRIV
V CC
Pin : TRIVADJ
V CC
9k 2.5V
300A
5715-09.EPS 5715-10.EPS
Pin : VCC
Pin : VREC
1mA
Pin : IOUT
V CC 5V
5715-11.EPS
Pins : CCAS, H1, H2
VCC 240k 1.5k 10pF
800
ESD protection
80k
2.1V 36k
CCAS
2.8mA in play-back
5715-13.EPS
H1-SP H2-SP H1-LP H2-LP
V MES
7/9
5715-14.EPS
5715-12.EPS
STV5715
APPLICATION DIAGRAM
V IN C
V IN Y
1nF
1k SW M SW H
4.5k
R3 1.5k
R1 18
1nF
1k 22H
22nF
R2 1.5k 22nF CHROMA TRIVADJ 22F
5V
V MES
20
19
18
17
16
15
14
13
12
TRIV 11
V CC
GND3
LUMA
SW M
SW H
V IN
STV5715
LSP
SW H
H L
SW M
HLP
TRIVADJ
1
2 CCAS VREC
3 22nF
4 H1 I OUT
5 22nF
6 H2
7 22nF C2
8 22nF C1
9 22nF CAGC
10 22nF
V REC
22H 22nF
GND1
GND2
22F
H1
H2 1k 22nF
5715-15.EPS
8/9
STV5715
PACKAGE MECHANICAL DATA 20 PINS - PLASTIC MICROPACKAGE
L C c1
a2
A
e3
E
D M
20
11
F
a1
b
e
s
b1
1
10
Dimensions A a1 a2 b b1 C c1 D E e e3 F L M S
Millimeters Min. 0.1 0.35 0.23 0.5 45o (typ.) 12.6 10 1.27 11.43 7.4 0.5 7.6 1.27 0.75 8o (max.) 0.291 0.020 13.0 10.65 0.496 0.394 Typ. Max. 2.65 0.2 2.45 0.49 0.32 0.014 0.009 0.004 Min.
Inches Typ. Max. 0.104 0.008 0.096 0.019 0.013 0.020 0.510 0.419 0.050 0.450 0.300 0.030
SO220L.TBL
0.050
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No licence is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without noti ce. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. (c) 1994 SGS-THOMSON Microelectronics - All Rights Reserved Purchase of I2C Components of SGS-THOMSON Microelectronics, conveys a license under the Philips I2C Patent. Rights to use these components in a I2C system, is granted provided that the system conforms to the I2C Standard Specifications as defined by Philips. SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.
9/9
PM-SO20L.EPS

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