UDA1331H 查看數據表（PDF） - Philips Electronics

零件编号

产品描述 (功能)

生产厂家

UDA1331H

Universal Serial Bus (USB) Audio Playback Peripheral (APP)

Philips Electronics 

Philips Semiconductors

Universal Serial Bus (USB) Audio

Playback Peripheral (APP)

Preliminary specification

UDA1331H

The control information becomes accessible at the

microcontroller. The audio information becomes available

at the digital I/O output or is fed directly to the ADAC.

The microcontroller handles the high-level USB protocols,

translates the incoming control requests and manages the

user interface via General Purpose (GP) pins and an

I2C-bus. The firmware for the microcontroller must be

located in an external (E)PROM.

The ADAC enables the wide and continuous range of input

sampling frequencies. By means of a Sample Frequency

Generator (SFG), the ADAC is able to reconstruct the

average sample frequency from the incoming audio

samples. The ADAC also performs the sound processing.

The ADAC consists of FIFO registers, a unique audio

feature processing DSP, the SFG, digital up-sampling

filters, a variable hold register, a Noise Shaper (NS) and a

Filter Stream DAC (FSDAC) with integrated filter and line

output drivers. The audio information is applied to the

ADAC via the USB processor or via the digital I/O input.

An external DSP can be used for adding extra sound

processing features via the digital I/O-bus.

The UDA1331H supports the standard I2S-bus data input

format and the LSB-justified serial data input format with

word lengths of 16, 18 and 20 bits.

The wide dynamic range of the bitstream conversion

technique used in the UDA1331H guarantees a high audio

sound quality.

QUICK REFERENCE DATA

SYMBOL

PARAMETER

CONDITIONS

MIN. TYP. MAX. UNIT

Supplies

VDD

IDD(tot)

IDD(ps)

supply voltage

total supply current

supply current in power-save

mode

note 1

3.0 3.3 3.6 V

−

50

−

mA

−

18

−

mA

Dynamic performance DAC

T----H-----D-S----+-----N---

total harmonic

distortion-plus-noise to signal

ratio

S/Nbz

Vo(FS)(rms)

signal-to-noise ratio at bipolar

zero

full-scale output voltage

(RMS value)

fs = 44.1 kHz; RL = 5 kΩ

at input signal of 1 kHz (0 dB) −

−

at input signal of 1 kHz (−60 dB) −

−

A-weighted at code 0000H

90

VDD = 3.3 V

−

−90(2) −80 dB

0.0032 0.01 %

−30(2) −20 dB

3.2 10

%

95

−

dBA

0.66 −

V

General characteristics

fi(sample)

Tamb

audio sample input frequency

operating ambient temperature

5

−

55

kHz

0

25

70

°C

Notes

1. VDD is the supply voltage on pins VDDA, VDDE, VDDI and VDDX. VSS is the ground on pins VSSA, VSSE, VSSI and VSSX.

All VDD and VSS pins must be connected to the same supply or ground respectively.

2. The audio information from the USB interface is fed directly to the ADAC.

ORDERING INFORMATION

TYPE

NUMBER NAME

PACKAGE

DESCRIPTION

VERSION

UDA1331H QFP64 plastic quad flat package; 64 leads (lead length 1.95 mm); body 14 × 20 × 2.8 mm SOT319-2

1998 Oct 06

3

Share Link: