Toshiba TA8805F Datasheet

TA8805F,TA1207F

TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC

TA8805F,TA1207F

FOR LCD TVS, PIF AND SIF SYSTEM

FEATURES

 PIF circuit

• High input sensitivity

• 3-stage variable-gain PIF amplifier

• Output with black noise inverter (TA8805F)

• Output without black noise inverter (TA1207F)

• High-speed response peak AGC with dual time constant

• Reverse RF AGC output (Emitter follower type)

• Built-in AFT detection circuit with AFT mute

 SIF circuit

• 4-stage SIF amplifier

• Quadrature-type detection circuit

• Use of a ceramic discriminator device makes the SIF circuit

adjustment-free

• Electronic volume control

• Built-in audio amplifier (output power : 30 mW (Typ.) )

Weight: 0.32 g(Typ.)

000707EBA1

• TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury o damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability Handbook” etc..

• The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction o failure of which may cause loss of human life or bodily injury (“Unintended Usage”). Unintended Usage include atomic energ control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this documen shall be made at the customer’s own risk.

• The products described in this document are subject to the foreign exchange and foreign trade laws.

• The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed b

TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION o others.

• The information contained herein is subject to change without notice.

2001-02-26 1/17

TA8805F,TA1207F

BLOCK DIAGRAM

(TA8805F)

(TA1207F)

2001-02-26 2/17

TERMINAL FUNCTION

TA8805F,TA1207F

PIN No.

1 2 PIF AGC1

3 RF AGC Output

4 RF AGC Delay

PIN NAME FUNCTION INTERFACE

PIF AGC

This IC is adopted dual time constant AGC circuit to improve AGC responsibility. To mute picture, connect to GND

RF AGC output terminal. (Emitter follower type) Output current : 3 mA (Typ.)

Changing comparator reference voltage adjusts RF AGC delay point.

5 PIF VCC

6 7 PIF Input 1

PIF Input 2

8 PIF GND

Connect bypass capacitor between this terminal and PIF GND with shortest wiring.

PIF input terminal.

Input impedance 5 kΩ (Typ.)

Connect bypass capacitor between this terminal and PIF VCC with shortest wiring.

—

2001-02-26 3/17

TA8805F,TA1207F

PIN No.

PIN NAME FUNCTION INTERFACE

9 SIF Input

10 SIF VCC

11 Volume

12 Audio Output

13 SIF GND

Connect B.P.F. between this terminal and pin 23.

Connect bypass capacitor between this terminal and SIF GND with shortest wiring.

Control audio amp. gain. (Control range 70 dB (Typ.) )

Audio signal output terminal. (Output power : 30 mW (Typ.) )

Connect bypass capacitor between this terminal and SIF VCC with shortest wiring.

—

14 Audio Input

15 FM Det. Input

17 De-emphasis Audio signal output terminal.

Audio signal input terminal. Input audio signal from pin 17 through filter

Quadrature input terminal for FM detection circuit. Connect FM coil between this terminal and pin 16. Audio output is muted when this terminal is connected to GND.

2001-02-26 4/17

PIN No.

16 Limiter Output

Sync. Sepa. Sync. sepa. output and input terminal.

TA8805F,TA1207F

PIN NAME FUNCTION INTERFACE

Limiter output terminal. Connect FM coil between this terminal and pin 15. Applying ceramic discriminator sets this circuit to non-adjustable circuit.

Video Coil 1

Video Coil 2

21 AFT Coil

23 Video Output Video signal output terminal.

Connect video detection coil.

Connect AFT detection coil. AFT output is defeated when this terminal connected to GND.

24 AFT Output

AFT detector output terminal based on double balanced multiplier. AFT output is muted when AFT coil terminal is connected to GND.

2001-02-26 5/17

TA8805F,TA1207F

MAXIMUM RATINGS

CHARACTERISTIC SYMBOL RATING UNIT

Power Supply Voltage VCC 8 V

Power Dissipation PD (Note) 500 mW

Operating Temperature T

Storage Temperature T

(Ta = 25°C)

−20~65 °C

opr

−55~150 °C

stg

Note: When using the device at above Ta = 25°C, decrease the power dissipation by 4 mW for each increase of

1°C.

RECOMMENDED POWER SUPPLY

PIN No.

5 PIF VCC 3.5 4.5 7.5 V

9 SIF VCC 3.5 4.5 7.5 V

ELECTRIC CHARACTERISTICS

PIN NAME MIN TYP. MAX UNIT

(Unless otherwise specified, V

= 4.5 V, Ta = 25°C)

DC CHARACTERISTICS

PIN No.

1 AGC1 1st AGC filter — 4.2 —

2 AGC2 2nd AGC filter — 4.2 —

3 RF AGC RF AGC output 3.6 3.8 4.0

4 RF AGC delay RF AGC delay — — —

5 PIF VCC PIF VCC — 4.5 —

6 PIF input 1 IF input 2.5 2.9 3.2

7 PIF input 2 IF input 2.5 2.9 3.2

8 PIF GND PIF GND — 0 —

9 SIF input SIF input 4.3 4.45 4.6

10 SIF VCC SIF VCC — 4.5 —

11 Volume control Audio volume control 2.0 2.2 2.4

12 Audio output Audio output 0.9 1.3 1.7

13 SIF GND SIF GND — 0 —

14 Audio input Audio input — — 0.5

15 FM det. Input FM det. Output 3.5 3.7 3.9

16 Limiter output SIF limiter output 2.55 2.75 2.95

17 De-emphasis Audio de-emphasis 1.15 1.45 1.75

18 Sync. sepa. Output Sync. sepa. signal output — — —

19 Video coil 1 PIF carrier output 4.05 4.15 4.25

20 Video coil 2 PIF carrier output 4.05 4.15 4.25

21 AFT coil Connecting AFT coil 4.35 4.45 4.55

22 Sync. sepa. Input Sync. sepa. signal output — — —

23 Video output 1 Video signal output 1.40 1.85 2.30

24 AFT output AFT output 1.3 1.8 3.2

PIN NAME FUNCTION MIN TYP. MAX UNIT

2001-02-26 6/17

+ 11 hidden pages