No. 5760-5/9

LC7535M

Pin Descriptions

Pin No.

Pin

Function

Equivalent circuit

• 5-dB step attenuator inputs

These inputs must be driven by low-impedance circuits.

2

L5dBIN

29

R5dBIN

• Loudness circuit connections

Connect the high-band compensation capacitors between the CT1 and 5dBIN pins, and

• 5-dB step attenuator outputs

These outputs must be accepted by circuits with an impedance of between 47 k

Ω and 1 MΩ.

3

LCT1

28

RCT1

4

LCT2

27

RCT2

5

L5dBOUT

26

R5dBOUT

• 1-dB step attenuator inputs

These inputs must be driven by low-impedance circuits.

7

L1dBIN

24

R1dBIN

• 1-dB step attenuator outputs

These outputs must be accepted by circuits with an impedance of between 47 k

Ω and 1 MΩ.

8

L1dBOUT

23

R1dBOUT

• Common connections for the volume control circuit. The impedance of the printed circuit board

pins are not connected internally, they must be connected externally as required by the various

become the residual resistance when the volume control is set at its maximum attenuation. This

means that care is required in selecting the values of these capacitors.

9

the address code is 8.

12

S

22

• Input pins for the serial data used to control the device.

These inputs must have an amplitude of 0 to 5 V. In applications in which any of microcontroller

series resistors of at least 2 k

Ω inserted.

17

CL

• Power supply connections. All these pins must be connected to the corresponding power

10

18

DI

19

CE

• Unconnected (NC) pins

Do not connect any signals or devices to these pins.

1, 6, 11,

15, 16,

20, 25,

30

NC

13

14

21