SM6452AM/BM

NIPPON PRECISION CIRCUITS—1

NIPPON PRECISION CIRCUITS INC.

Audio Variable Volume ICs

OVERVIEW

The SM6452AM/BM are serial-control electronic variable volume ICs for audio applications. They provide

electronic volume control for 6 channels, with independent channel gain, attenuation and muting. They feature

bus (SM6452BM). The SM6452AM/BM are available in 24-pin SSOP packages.

FEATURES

s

6-channel input/output (positive-phase-sequence

output)

s

Attenuation function

• 6-channel independent control

• +16 to 0 to

−79dB variable range

• 1.0 dB/step adjustment

• Mute function

s

Microcontroller interface

• 3-wire serial data interface (SM6452AM)

s

Low noise

•

≤ 0.002% THD + noise

•

≤ 10µVrms residual noise

s

s

Power supply

• 7 to 13V analog supply

• 2.7 to 5.5V digital supply

s

Molybdenum-gate CMOS process

s

24-pin SSOP

ORDERING INFORMATION

PINOUT

SM6452AM

SM6452BM

Electronics N.V.

D e vice

P a ck ag e

SM6452AM

24-pin SSOP

SM6452BM

24-pin SSOP

Top view

Top view

1

13

24

12

AVDD1

VREF1

AIN1

AIN2

AIN3

AIN4

AIN5

AVDD2

VREF2

AOUT1

AOUT2

AOUT3

AOUT4

AOUT5

AIN6

AOUT6

AVSS1

DVDD

MDT

RSTN

AVSS2

DVSS

MCK

MLEN

1

13

24

12

AVDD1

VREF1

AIN1

AIN2

AIN3

AIN4

AIN5

AVDD2

VREF2

AOUT1

AOUT2

AOUT3

AOUT4

AOUT5

AIN6

AOUT6

AVSS1

DVDD

SDA

RSTN

AVSS2

DVSS

SCL

NC