TSH512

3/19

PIN DESCRIPTION

Pin

Pin name

related to

Pin description

1

DEC2

TX2

-

Decoupling capacitor for internal voltage reference

2

MIC-BIAS2

TX2

O

Microphone bias

3

GND

-

-

GROUND

4

VCC

-

-

SUPPLY VOLTAGE

5

SBY

TX1 & TX2

I

Standby Control (INPUT pin)

6

VOX-INTS

TX1 & TX2

-

Time constant terminal for Audio Signal integrator in VOX

7

VOX-SENS

TX1 & TX2

-

Gain adjustment for VOX input sensitivity

8

VCC

-

-

SUPPLY VOLTAGE

9

GND

-

-

GROUND

10

MIC-BIAS1

TX1

O

Microphone bias

11

DEC1

TX1

-

Decoupling capacitor for internal voltage reference

12

LNA-INP1

TX1

I

LNA positive input

13

LNA-INN1

TX1

I

LNA negative input

14

LNA-OUT1

TX1

O

LNA output

15

ALC-INT1

TX1

-

Time constant terminal for integrator in ALC

16

PEA-INN1

TX1

I

Pre-Emphasis Amplifier negative input

17

PEA-OUT1

TX1

O

Pre-Emphasis Amplifier output

18

VCO-BIAS1

TX1

O

Bias for external VCO components

19

VCC

-

-

Supply Voltage

20

VCO-A1

TX1

-

Oscillator component connection

21

VCO-B1

TX1

-

Oscillator component connection

22

VCO-OUT1

TX1

O

VCO output

23

GND

-

-

Ground

24

BUF-IN1

TX1

I

Input to the output buffer

25

BUF-OUT1

TX1

O

Output of the output buffer

26

VCC

-

-

Supply Voltage

27

VOX-MUTE

TX1 & TX2

O

Mute control (Output pin) in VOX

28

VOX-INTN

TX1 & TX2

-

Time constant terminal for Noise integrator in VOX

29

VOX-TIMER

TX1 & TX2

-

Rise time for timer in VOX

30

GND

-

-

Ground

31

BUF-OUT2

TX2

O

Output of the output buffer

32

BUF-IN2

TX2

I

Input to the output buffer

33

GND

-

-

Ground

34

VCO-OUT2

TX2

O

VCO output

35

VCO-B2

TX2

-

Oscillator component connection

36

VCO-A2

TX2

-

Oscillator component connection

37

VCC

-

-

Supply Voltage

38

VCO-BIAS2

TX2

O

Bias for external VCO components

39

PEA-OUT2

TX2

O

Pre-Emphasis Amplifier output

40

PEA-INN2

TX2

I

Pre-Emphasis Amplifier negative input

41

ALC-INT2

TX2

-

Time constant terminal for internal peak detector in ALC

42

LNA-OUT2

TX2

O

LNA output

43

LNA-INN2

TX2

I

LNA negative input

44

LNA-INP2

TX2

I

LNA positive input

1. pin direction: I = input pin, O = output pin, - = pin to connect to supply or decoupling capacitors or external components