The PCM1738 is a CMOS, monolithic, integrated circuit (IC) that includes stereo digital-to-analog converters (DACs) and support circuitry in a small SSOP-28 package. The data converters use a newly developed advanced segment DAC architecture to achieve excellent dynamic performance and improved tolerance to clock jitter. The PCM1738 provides balanced current outputs, allowing the user to optimize analog performance externally, and accepts industry-standard audio data formats with 16- to 24-bit data, providing easy interfacing to audio DSP and decoder chips. Sampling rates up to 200 kHz are supported. The PCM1738 also has two optional modes of operation: an external digital filter mode (for use with the DF1704, DF1706, and PMD200), and a DSD decoder interface for SACD playback applications. A full set of user-programmable functions is accessible through a 4-wire serial control port that supports register write and read functions.
24-Bit Resolution
Analog Performance (VCC = 5 V):
Dynamic Range: 117 dB (typical)
SNR: 117 dB (typical)
THD+N: 0.0004% (typical)
Full-Scale Output: 2.2 Vrms (at Postamplifier)
Differential Current Output: ±2.48 mA
Sampling Frequency: 10 kHz to 200 kHz
System Clock: 128, 192, 256, 384, 512,or 768 fS With Autodetect
Accepts 16-, 20-, and 24-Bit Audio Data
Data Formats: Standard, I2S, and Left-Justified
8× Oversampling Digital Filter:
Stop-Band Attenuation: -82 dB
Pass-Band Ripple: ±0.002 dB
Optional Interface to External Digital Filter Available
Optional Interface to DSD Decoder for SACD Playback
User-Programmable Mode Controls:
Digital Attenuation: 0 dB to -120 dB, 0.5 dB/Step
Digital De-Emphasis
Digital Filter Rolloff: Sharp or Slow
Soft Mute
Zero-Detect Mute
Zero Flags for Each Output
Dual-Supply Operation:
5-V Analog, 3.3-V Digital
5-V Tolerant Digital Inputs
Small SSOP-28 Package
APPLICATIONS
AV Receivers
DVD Movie Players
SACD Players
HDTV Receivers
Car Audio Systems
Digital Multitrack Recorders
Other Multichannel Audio Systems
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