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BU9480

16-bit stereo D / A converter for audio applications

ROHM Semiconductor 

Multimedia ICs

16-bit stereo D / A converter

for audio applications

BU9480F

The BU9480F is a 16-bit stereo D / A converter designed for audio applications, and has an internal 2 × oversam-

pling circuit.

•Applications

16-bit stereo D / A converter for audio applications

•Features

1) 3.0 to 5.5V operating voltage.

2) Low current consumption because of the CMOS

process.

3) Resistor strings method used.

•Block diagram

4) 2-channel common phase output.

5) Internal 2 × oversampling interpolator.

6) 8 - pin plastic package.

7) Supports 4fs. (200kHz operation)

LRCLK 5

BCLK 7

SDATA 6

SHIFT REGISTER / LATCH

X2 OVER

SAMPLING

DAC

X2 OVER

SAMPLING

DAC

8 VCC

•Pin descriptions

Pin No. Pin name

1

ROUT

2

REF

3

GND

4

LOUT

5

LRCK

6

SDAT

7

BCLK

8

VCC

4

OUTL

2

REF

1

OUTR

3 GND

Function

Right channel analog signal output

Connects the DA ref. voltage pin and ground

Ground

Left channel analog signal output

The signal that distinguishes between left and

right channels for serial data (left channe =

high level, right channel = low level).

Serial data input

Input with 2' compliment, MSB first.

Serial data shift clock input

Vcc

I/O

Low-impedance output

High-impedance input

—

Low-impedance output

Logic input

Logic input

Logic input

—

Voltage

1 / 2VCC

1 / 2VCC

—

1 / 2VCC

—

—

—

—

1

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