AD1955ARSZRL

Product Summary

The AD1955ARSZRL is a complete high performance single-chip stereo digital audio playback system. It is comprised of a multibit sigma-delta modulator, high performance digital interpolation filters, and continuoustime differential current output DAC section. Other features include an on-chip clickless stereo attenuator, mute capability, programmed through an SPI-compatible serial control port. The AD1955ARSZRL is fully compatible with all known DVD audio formats including 192kHz as well as 96kHz sample frequencies and 24-bits. It also is backwards compatible by supporting 50/15μs digital de-emphasis intended for “redbook” Compact Discs, as well as de-emphasis at 32kHz and 48kHz sample rate. The AD1955ARSZRL has a very flexible serial data input port that allows for glueless interconnection to a variety of ADCs, DSPs, SACD decoder, external digital filter, AES/EBU receivers and sample rate converters. The AD1955ARSZRL can be configured in Left-justified, I2S, Right-Justified, or DSP serial port compatible modes. It can support MSB first, twoscompliment format, 16, 18, 20 and 24 bits in all standard PCM modes. Also the AD1955ARSZRL has an interface for SACD playback and an external digital filter interface for use with an external digital interpolation filter or HDCD decoder. The AD1955ARSZRL uses a +5 V power supply. It is fabricated on a single monolithic integrated circuit and is housed in a 28-pin SSOP package for operation over the temperature range -400C to +105℃.

Parametrics

AD1955ARSZRL absolute maximum ratings: (1)DVDD to DGND: -0.3 to 6 V; (2)AVDD to AGND: -0.3 to 6 V; (3)Digital Inputs DGND: - 0.3 to DVDD + 0.3 V; (4)Analog Outputs AGND: - 0.3 to AVDD + 0.3 V; (5)AGND to DGND: -0.3 to 0.3 V; (6)Reference Voltage: (AVDD + 0.3)/2; (7)Soldering: +300 ℃; 10 sec.

Features

AD1955ARSZRL features: (1)FEATURES; (2)5V Power Supply Stereo Audio DAC System.; (3)Accepts 16/18/20/24-Bit Data; (4)Supports 24-Bits, 192kHz Sample Rate PCM Audio Data; (5)Supports SACD bit-stream and External Digital Filter Interface; (6)Accepts a Wide Range of PCM Sample Rates Including: 32kHz, 44.1kHz. 48kHz, 88.2kHz, 96kHz, and 192kHz; (7)Multibit Sigma Delta Modulator with Perfect Differential Linearity Restoration for Reduced Idle Tones and Noise Floor; (8)Data Directed Scrambling DAC - Least Sensitive to Jitter; (9)Supports SACD playback with Bit Expansion filter; (10)Differential Current Output for Optimum Performance; (11)8.64 mA p-p Output Current with +3dB headroom in SACD mode; (12)120 dB SNR/DNR (not muted) at 48KHz Sample Rate (A-Weighted Stereo); (13)123 dB SNR/DNR (Mono); (14)-110 dB THD+N; (15)110 dB Stopband Attenuation with +/-0.0002dB Passband Ripple; (16)8 Times Oversampling Digital Filter; (17)On-chip Clickless Volume Control; (18)Supports SACD-Mute pattern detection; (19)Supports 64fs/128fs DSD SACD with phase modulation; (20)Internal Digital Filter pass-through for External Filter; (21)Master clock: 256fs,384fs,512fs,768fs; (22)Hardware and Software Controllable Clickless Mute; (23)Serial (SPI) Control for: Serial Mode, Number of Bits, Sample Rate, Volume, Mute, De-emphasis, Mono Mode; (24)Digital De-emphasis for 32, 44.1, 48 KHz Sample Rates.

Diagrams