1853JRS

Product Summary

The 1853JRS is a complete high performance single-chip stereo digital audio playback system. It is comprised of a high performance digital interpolation filter, a multibit sigma-delta modulator, and a continuous-time current-out analog DAC section. Other features include an on-chip clickless stereo attenuator and mute capability, programmed through an SPIcompatible serial control port. The 1853JRS is fully compatible with all known DVD formats and supports 48 kHz, 96 kHz and 192 kHz sample rates with up to 24 bits word lengths. It also provides the “Redbook” standard 50 μs/15 μs digital de-emphasis filters at sample rates of 32 kHz, 44.1 kHz and 48 kHz. The 1853JRS has a very flexible serial data input port that allows for glueless interconnection to a variety of ADCs, DSP chips, AES/EBU receivers and sample rate converters. The 1853JRS can be configured in left-justified, I2S, right-justified, or DSP serial port compatible modes. The 1853JRS accepts serial audio data in MSB first, twos complement format. It operates from a single +5 V power supply. It is fabricated on a single monolithic integrated circuit and is housed in a 28-lead SSOP package for operation over the temperature range 0℃ to +70℃.

Parametrics

1853JRS absolute maximum ratings: (1)Supply Voltages (AVDD, DVDD: +5.0 V; (2)Ambient Temperature: +25℃; (3)Input Clock: 24.576 MHz (512 × FS Mode); (4)Input Signal: 996.094 kHz –0.5 dB Full Scale; (5)Input Sample Rate: 48 kHz; (6)Measurement Bandwidth: 20 Hz to 20 kHz; (7)Word Width: 20 Bits; (8)Input Voltage HI: 3.5 V; (9)Input Voltage LO: 0.8 V.

Features

1853JRS features: (1)5 V Stereo Audio DAC System; (2)Accepts 16-/18-/20-/24-Bit Data; (3)Supports 24 Bits and 192 kHz Sample Rate; (4)Accepts a Wide Range of Sample Rates Including: 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz and 192 kHz; (5)Multibit Sigma-Delta Modulator with “Perfect Differential Linearity Restoration” for Reduced Idle Tones and Noise Floor; (6)Data Directed Scrambling DAC—Least Sensitive to Jitter; (7)Differential Output for Optimum Performance; (8)120 dB Signal to Noise (Not Muted) at 48 kHz (A-Weighted Mono); (9)117 dB Signal to Noise (Not Muted) at 48 kHz (A-Weighted Stereo); (10)119 dB Dynamic Range (Not Muted) at 48 kHz Sample Rate (A-Weighted Mono); (11)116 dB Dynamic Range (Not Muted) at 48 kHz Sample Rate (A-Weighted Stereo): 107 dB THD+N (Mono Application Circuit, See Figure 30), 104 dB THD+N (Stereo); (12)115 dB Stopband Attenuation (96 kHz); (13)On-Chip Clickless Volume Control; (14)Hardware and Software Controllable Clickless Mute; (15)Serial (SPI) Control for: Serial Mode, Number of Bits, Interpolation Factor, Volume, Mute, De-Emphasis, Reset; (16)Digital De-Emphasis Processing for 32, 44.1 and 48 kHz Sample Rates; (17)Clock Auto-Divide Circuit Supports Five Master-Clock Frequencies; (18)Flexible Serial Data Port with Right-Justified, Left-Justified, I2S-Compatible and DSP Serial Port Modes; (19)28-Lead SSOP Plastic Package.

Diagrams