STV5712 ADVANCED FM AUDIO PLAY-BACK AND RECORD AMPLIFIER FOR VCR . . .. . . . PLAY-BACK MODE LOW NOISE 68dB AMPLIFIERS FOR 2 HEADS AUTOMATIC OFFSET CANCELLATION BETWEEN THE 2 SELECTED HEADS ONE PLAY-BACK OUTPUT MODE SELECTION BY LOGIC INPUT RECORD MODE ONE INTEGRATED I/I CONVERTER WITH ACCURATE CONTROL OF TRANSCONDUCTANCE RECORD AMPLIFIER WITH AUTOMATIC PROTECTION AGAINST SHORT CIRCUIT 5V SUPPLY VOLTAGE SO16 NARROW (Plastic Micropackage) ORDER CODE : STV5712 DESCRIPTION The STV5712 is an advanced two head FM audio record and play-back amplifier for VCR. PIN CONNECTIONS VCC 1 16 V1 V2 2 15 I OUT C2 3 14 GND2 H2 4 13 PROT GND1 5 12 V MES H1 6 11 V IN C1 7 10 SW REC FM OUT 8 9 5712-01.EPS SW H April 1996 1/8 STV5712 SW REC SW H 11 10 9 5 6 7 8 C1 FM OUT S T V 5 7 1 2 5712-02.EPS VIN 4 12 H1 3 VMES 13 GND1 V2 PROT 2 14 H2 1 GND2 IOUT 15 C2 V1 16 VCC BLOCK DIAGRAM FUNCTIONAL DESCRIPTION STV5712 is intended for 2 heads FM audio VCR applications. High performancetechnologyallows very low noise levels (current and voltage). In play-back mode a special feature suppresses the DC offset when switching two channels. Optimized play-back output stage gives to the STV5712 large capability to directly drive a coaxial cable in order to reduce number of external components. Only one power supply is necessary for play-back and record modes. The mode can be chosen through a logic input. Aspecial care has been taken to avoid current peaks through the rotary transformers. 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 the two heads, the DC current and the AC characteristics can be very precisely controled with accurate external resistors. If recommended resistances are used, a ±5% transconductance accuracy is guaranted. The recording amplifier includes a protection system which protects the IC and the application board against overheating in case of short circuit on the recording transconductancecomponents. STV5712 is fully protected against ESD. Symbol Parameter Value VCC Power Supply Voltage 6 TJ Junction Temperature + 150 Unit V o C 5712-01.TBL ABSOLUTE MAXIMUM RATINGS Symbol R th (j-a) 2/8 Parameter Junction-ambient Thermal Resistance Value Typ. 100 Unit o C/W 5712-02.TBL THERMAL DATA STV5712 ELECTRICAL OPERATING CHARACTERISTICS (TA = 25oC unless otherwise specified) Power Consumption VCC = 5V Note : 1. Record (1) Typ. Max. Typ. Max. 25mA 35mA 60mA 80mA 5712-03.TBL Play-Back Parameter R1 = 5.6Ω Play-back Mode VCC = 5V, no load on Pin VOUT Symbol Parameter ICC1 Supply Current VCC Supply Voltage Test Conditions Min. Typ. Max. Unit 25 35 mA 4.75 5 5.25 V 63 68 73 dB 1.2 dB 0.34 0.5 nV ⁄ √ Hz FM OUT GPB Pre-amplification Gain Sinus wave 1.6MHz 400mVPP on output, Input on Pin H1 or H2 ∆GPB Gain Difference of Output Signal on Pin FM OUT between Channel 1 and Channel 2 Sinus wave 1.6MHz 0.1mVPP on inputs H1 or H2 Equivalent Input Voltage Noise Level Input grounded via switching transistor on Pins H1, H2 iN CRT Equivalent Input Current Noise Pins H1, H2 3.6 5.0 pA ⁄ √ Hz Crosstalk Sinus wave 1.6MHz 100µVPP, All switches combinated -45 -40 dB Bandwidth Cut-off Frequency -3dB attenuation 50Ω in parallel on the input Low High 0.1 8 MHz MHz 45 pF Ω FLCPB FHCPB CIN Input Capacitance Pins H1, H2 RIN Pre-amplifier Input Resistance Pins H1, H2 At 1.6MHz 600 ZPB Output Impedance DC 30 VDCPB DC Level at Pin FMOUT ∆VDC Head Switch Offset SH PB1 Second Harmonic 1.8 Sinus wave 1.6MHz 100µVPP on input 500Ω//100pF 2.4 -45 50 Ω 3 V 150 mV -40 dB 5712-04.TBL eN 3/8 STV5712 ELECTRICAL OPERATING CHARACTERISTICS (TA = 25oC unless otherwise specified) (continued) Record Mode VCC = 5V, Load resistor 50Ω on Pin IOUT Transconductance network defined by : R1 = 5.6Ω 1% Pins PROT/VMES R2 = 1kΩ 1% Pins VMES/VIN R3 = 750Ω 1% Pins VIN Symbol ICC2 Parameter Current Supply Test Conditions Min. VCC = 5V Typ. Max. Unit 60 80 mA IOUT Max. Record Current Biasing Current of the record amplifier 70 33 TR Transconductance ZOUT Output Resistance SH REC Second Harmonic Output Current 40mAPP at 1.6MHz Bandwidth Cut-off Frequency -3dB attenuation Output current 60mAPP Low High FLCREC FHCREC VIN = 200mVPP 5V on Pin PROT Maximum Saturation Voltage on Pin PROT Input current 50mA Input Resistance Equivalent value of R3 resistor mAPP 47 220 7 Maximum Input Current on Pin PROT 40 mA/V 100 -43 mA kΩ -38 dB 0.1 MHz MHz 250 400 mA 100 150 mV 500 700 900 Ω Min. Typ. Max. Unit VCC V 5 150 5712-05.TBL Imax IBIAS Symbol Parameter VSWH1 VSWL1 Head Selection Pin SW Test Conditions Head number 1 (high level) 2.4 Head number 2 (low level) 0 Input current (high level) ISWH1 ISWL1 Output current (low level) VSWH2 Record mode (high level) VSWL2 Play-back mode (low level) Mode Selection Pin SW REC 20 20 1.5 V 50 µA 50 µA 2.4 VCC V 0 1.5 V ISWH2 Input current (high level) 20 50 µA ISWL2 Output current (low level) 20 50 µA tON1 Delay time selection ON (output signal appears on Pin FM OUT) 250 500 ns Delay time selection OFF (output signal disappears on Pin FM OUT) 250 500 ns Delay time selection ON (output signal appears on Pin IOUT) 4 40 µs Delay time selection OFF (output signal appears on Pin FM OUT) 1.3 10 ms tOFF1 Selection Pin SW Transient Response tON2 tOFF2 4/8 Selection Pin SW REC Transient Response 5712-06.TBL Switching Levels STV5712 ELECTRICAL OPERATING CHARACTERISTICS (TA = 25oC unless otherwise specified) (continued) Power Supply Parameter Test Conditions VCC Positive Supply Voltage Pin VCC SVR Supply Voltage Rejection 0.5mVPP on Pin VCC 75µVPP on Pin H1, H2 Measurement on Pin FM OUT Min. Typ. Max. Unit 4.75 5 5.25 V 15 20 5712-07.TBL Symbol dB INPUT/OUTPUTS EQUIVALENT INTERNAL DIAGRAM Pins : C1, C2 Pin : SW VCC 10kΩ VCC 15kΩ 7.5kΩ 47kΩ 10kΩ 400Ω Pin : FM OUT 5712-04.EPS 5712-03.EPS 1kΩ Pin : VMES VCC VREC 4kΩ 5pF 800Ω 500Ω 1.5pF 0.5pF 18Ω 5712-05.EPS 75Ω 5712-06.EPS 6pF 5/8 STV5712 INPUT/OUTPUTS EQUIVALENT INTERNAL DIAGRAM (continued) Pin : VIN Pin s : V1, V2 VCC VCC 750 Ω 750 Ω 6pF Pin : PROT 5712-08.EPS 5712-07.EPS V1 Pin : VCC 0V/5V Pin : IOUT 5712-10.EPS 5712-09.EPS 800Ω Pins : H1, H2 VCC VCC 5 V 12 0kΩ ES D prote ction 800Ω 2.1V 2.8m A in play-ba ck 6/8 5712-12.EPS 5712-11.EPS VMES H1 H2 STV5712 APPLICATION DIAGRAM VIN C7 22nF R3 750Ω R1 5.6 Ω R2 1kΩ SW-REC R4 10k Ω SW-H 16 15 14 13 12 11 10 9 S T V 5 7 1 2 I1 1 I1 2 C8 1nF GND 2 3 C2 22nF 4 5 C4 C3 22nF 22nF 6 7 8 FM OUT C1 22nF L1 22µH VCC C6 22nF 5712-13.EPS 1 C5 22 µF 7/8 STV5712 PM-SO16N.EPS PACKAGE MECHANICAL DATA 16 PINS - PLASTIC MICROPACKAGE (SO NARROW) Dimensions Millimeters Typ. 0.1 0.35 0.19 Max. 1.75 0.25 1.6 0.46 0.25 Min. Inches Typ. 0.004 0.014 0.007 0.5 Max. 0.069 0.009 0.063 0.018 0.010 0.020 45o (typ.) 9.8 5.8 10 6.2 0.386 0.228 1.27 8.89 3.8 0.4 0.394 0.244 0.050 0.350 4.0 1.27 0.62 0.150 0.016 0.157 0.050 0.024 o 8 (Max.) 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. 1996 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 - Canada - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. 8/8 SO16N.TBL A a1 a2 b b1 C c1 D E e e3 F L M S Min.