FEATURES

COMPANION DIGITAL FILTER FOR THE PCM1704

24-BIT AUDIO DAC

HIGH PERFORMANCE FILTER:

Stopband Attenuation: –115dB

Passband Ripple: ±0.00005dB

AUDIO INTERFACE:

Input Data Formats: Standard, Left-

Justified, and I2S

Input Word Length: 16, 20, or 24 Bits

Output Word Length: 16, 18, 20, or 24 Bits

Sampling Frequency: 32kHz to 96kHz

PROGRAMMABLE FUNCTIONS:

Hardware or Software Control Modes

Sharp or Slow Roll-Off Filter Response

Soft Mute

Digital De-Emphasis

Independent Left/Right Digital Attenuation

SYSTEM CLOCK: 256fS, 384fS, 512fS, 768fS

ON-CHIP CRYSTAL OSCILLATOR

+5V SINGLE-SUPPLY OPERATION

SMALL SSOP-28 PACKAGE

DESCRIPTION

The DF1704 is a high-performance, stereo, 8X oversampling

digital interpolation filter designed for high-end consumer

and professional audio applications. The DF1704 supports

24-bit, 96kHz operation and features user-programmable

functions, including selectable filter response, de-emphasis,

attenuation, and input/output data formats.

The DF1704 is the ideal companion for Texas Instruments’

PCM1704 24-bit audio digital-to-analog converter. This

combination allows for construction of very high-performance

audio systems and components.