[FAQ] SRC4192: Differences between the SRC4192 and the SRC4193?

Features

SRC4192

SRC4193

Device control

Hardware controlled

Software controlled

Programmable Digital Output Attenuation

NOT supported

Supported; Digital attenuation control is adjustable from 0 dB to –127.5 dB in 0.5-dB steps.

Direct Downsampling option for Decimation filter

NOT supported

Supported; This can be used in cases when aliasing is not an issue (ex: when output fs is equal or greater than input fs).

Advantage: Significant reduction is group delay associated w Decimation filter, allowing lower latency SRC.

RATIO output

NOT supported

Supported; This can be used as an indicator or flag output for host device.

Reset and Power-down Operation

Using RST pin; With external clock source active, assert RST low for min 500ns

Using RST pin; BUT we need to wait at least 500uS after RST rising edge due to internal logic requirements;

SRC4193 also supports power-down mode [Using PDN bit of Control Register 1]