Digital Interpolation Filter 28-Pin SSOP Rail

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.

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: 256f_S, 384f_S, 512f_S, 768f_S

ON-CHIP CRYSTAL OSCILLATOR

+5V SINGLE-SUPPLY OPERATION

SMALL SSOP-28 PACKAGE