PRODUCT OVERVIEW

The AD1896 is a 24-bit, high performance, single-chip, second generation asynchronous sample rate converter. Based on Analog Devices experience with its first asynchronous sample rate converter, the AD1890, the AD1896 offers improved performance and additional features. This improved performance includes a THD + N range of –117 dB to –133 dB depending on the sample rate and input frequency, 142 dB (A-Weighted) dynamic range, 192 kHz sampling frequencies for both input and output sample rates, improved jitter rejection, and 1:8 upsampling and 7.75:1 downsampling ratios. Additional features include more serial formats, a bypass mode, better interfacing to digital signal processors, and a matched-phase mode.

FEATURES

Automatically Senses Sample Frequencies

No Programming Required

Attenuates Sample Clock Jitter

3.3 V–5 V Input and 3.3 V Core Supply Voltages

Accepts 16-/18-/20-/24-Bit Data

Up to 192 kHz Sample Rate

Input/Output Sample Ratios from 7.75:1 to 1:8

Bypass Mode

Multiple AD1896 TDM Daisy-Chain Mode

Multiple AD1896 Matched-Phase Mode

142 dB Signal-to-Noise and Dynamic Range (A-Weighted, 20 Hz–20 kHz BW)

Up to –133 dB THD + N

Linear Phase FIR Filter

Hardware Controllable Soft Mute

Supports 256
fS, 512
fS, or 768
fS Master

Mode Clock

Flexible 3-Wire Serial Data Port with Left-Justified, I2S, Right-Justified (16-,18-, 20-, 24-Bits), and TDM Serial Port Modes

Master/Slave Input and Output Modes

28-Lead SSOP Plastic Package

APPLICATIONS

Home Theater Systems, Studio Digital Mixers, Automotive Audio Systems, DVD, Set-Top Boxes, Digital Audio Effects Processors, Studio-to-Transmitter Links, Digital Audio Broadcast Equipment, DigitalTape Varispeed Applications