TC9293F, TC9293FN, TC9293N are a 2’nd order Σ-∆

modulation system 1 bit DA converter with a built-in 8 times over

sampling digital filter and analog filter developing for digital

audio equipment. As this IC is small package, SSOP24 (1.00 mm,

0.65 mm) and SDIP24, and the analog filter has been

incorporated, it is able to output a direct analog wave form and

construct small the digital filter~the analog output unit at a low

price.

Features

• Built in 8 times over sampling digital filter

• Low voltage operate (3.0~5.5 V)

• Built-in digital de-emphasis filter

• In serial control mode, output amplitude can be set in 128

steps of resolution using microcontroller command

• In parallel control mode, soft mute can be set for the output

signal in 64 steps in 20 ms

• Over sampling ratio (OSR) of Σ-∆ modulation circuit is 192 fs

• Support double speed operation

• Sampling frequency: 32 kHz, 44.1 kHz, 48 kHz

• Built-in 2’nd order analog filter

• Characteristics of the digital filter and DA converter are as

follows