TBA121-5 查看數據表（PDF） - Siemens AG

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TBA121-5

FM-Sound IF with SCART Switch and Volume Control

Siemens AG 

TBA 121-5

Pin Functions

Pin No.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Function

Ground

Limiter amplifier operating point feedback

(RF decoupling of IF amplifier with appropriate capacitors is required!)

Limiter amplifier operating point feedback and low end

(RF decoupling of IF amplifier with appropriate capacitors is required!)

IF-amplifier output (emitter follower)

IF-amplifier output (emitter follower)

Demodulator input with high impedance input and internal 15 kΩ supply resistor

(if an LC circuit is used, the Q is determined by the damping resistance across

pins 6 and 7)

Demodulator input with high impedance input and internal 15 kΩ supply resistor

(if an LC circuit is used, the Q is determined by the damping resistance across

pins 6 and 7)

Connection for de-emphasis capacitor (a series resistor of 11 kΩ is integrated)

AF output of the SCART interface (emitter follower with short circuit limiter)

AF input 1 of the SCART interface (IF branch)

Rec/Pb switch input

AF input 2 of the SCART interface (SCART input)

Volume control

IF output (emitter follower)

+ VS supply voltage

IF input (limiter amplifier input; internal resistor between pin 16 and 3 typ. 800 Ω)

Semiconductor Group

92

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