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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.

16-bit stereo D / A converter for audio applications

1) 3.0 to 5.5V operating voltage.

2) Low current consumption because of the CMOS

process.

3) Resistor strings method used.

4) 2-channel common phase output.

5) Internal 2

× oversampling interpolator.

6) 8 - pin plastic package.

7) Supports 4fs. (200kHz operation)

LRCLK

BCLK

SDATA

OUTL

REF

OUTR

GND

1

2

3

4

5

6

7

8

SHIFT REGISTER / LATCH

X2 OVER

SAMPLING

DAC

X2 OVER

SAMPLING

DAC

Pin name

Function

I / O

Voltage

—

—

—

—

—

Right channel analog signal output

2

REF

3

GND

Left channel analog signal output

5

LRCK

6

7

SDAT

BCLK

8

Serial data shift clock input

Vcc

Connects the DA ref. voltage pin and ground

Ground

Pin No.

Low-impedance output

High-impedance input

—

Low-impedance output

Logic input

Logic input

Logic input

—

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.