LC7535M データシートの表示（PDF） - SANYO -> Panasonic

部品番号

コンポーネント説明

メーカー

LC7535M

Electronic Volume/Loudness Control with Serial Data Control and High Voltage-Handling Capacity

SANYO -> Panasonic 

LC7535M

Pin Descriptions

Pin No. Pin

Function

2

L5dBIN

• 5-dB step attenuator inputs

These inputs must be driven by low-impedance circuits.

29 R5dBIN

3

LCT1

28

RCT1 • Loudness circuit connections

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

4

LCT2

connect the low band compensation capacitors between the CT2 and the VM pins.

27

RCT2

5 L5dBOUT

• 5-dB step attenuator outputs

These outputs must be accepted by circuits with an impedance of between 47 kΩ and 1 MΩ.

26 R5dBOUT

7

L1dBIN

• 1-dB step attenuator inputs

These inputs must be driven by low-impedance circuits.

24 R1dBIN

8 L1dBOUT

• 1-dB step attenuator outputs

These outputs must be accepted by circuits with an impedance of between 47 kΩ and 1 MΩ.

23 R1dBOUT

9

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

pattern connected to these pins must be kept as low as possible. Since the LVM, RVM, and VSS

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

specifications. When a single-sided power supply is used, the capacitors between VM and VSS

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

22

RVM

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

• Selection input for the address code in the data format. If this pin is connected to VDD, data will

12

S

be accepted when the address code is 9, and if connected to VCC, data will be accepted when

the address code is 8.

17

CL

18

DI

19

CE

10

VEE

13

VDD

14

VSS

21

VCC

1, 6, 11,

15, 16,

20, 25,

NC

30

• 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

CL, DI, or CE may go high in backup mode (when VDD = VCC = 0 V), the signal lines must have

series resistors of at least 2 kΩ inserted.

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

supply voltage. When power is first applied, the VCC voltage must not rise before VDD.

• Unconnected (NC) pins

Do not connect any signals or devices to these pins.

Equivalent circuit

No. 5760-5/9

Share Link: