PCM1850A Datasheet, PDF (1/32 Pages) Burr-Brown (TI) – 24-BIT, 96-kHz STEREO A/D CONVERTER WITH 6 ´ 2-CHANNEL MUX AND PGAE

BurrĆBrown Products
from Texas Instruments
24-BIT, 96-kHz STEREO A/D CONVERTER
WITH 6 × 2-CHANNEL MUX AND PGAE
PCM1850A
PCM1851A
SLES173 – MARCH 2006
FEATURES
• Multiplexer and Programmable-Gain Amplifier
(PGA)
– 6×2-Channel Single-Ended Inputs
– Multiplexed Output
– Maximum Input Level: 2.4 V rms
– Input Resistance: 50 kΩ, Minimum
– PGA Gain: 11-dB to –11-dB Range, 0.5
dB/Step
• 24-Bit Delta-Sigma Stereo A/D Converter
• Antialiasing Filter Included
• Oversampling Decimation Filter
– Oversampling Frequency: ×64
– Pass-Band Ripple: ±0.05 dB
– Stop-Band Attenuation: –65 dB
– On-Chip High-Pass Filter: 0.91 Hz (48 kHz)
• High Performance
– THD+N: 0.0023% (Typically)
– SNR: 101 dB (Typically)
– Dynamic Range: 102 dB (Typically)
• PCM Audio Interface
– Master/Slave Mode Selectable
– Data Formats: 24-Bit Left-Justified, 24-Bit
I²S, 16-, 24-Bit Right-Justified
• Mode Control by Serial Interface:
– With SPI Control (PCM1850A)
– With I²C Control (PCM1851A)
• Sampling Rate: 16–96 kHz
• System Clock: 256 f_s, 384 f_s, 512 f_s, 768 f_s
• Dual Power Supplies: 5 V for Analog, 3.3 V for
Digital
• Package: 32-Pin TQFP
APPLICATIONS
• DVD/HDD/DVD+HDD Recorder
• AV Amplifier Receiver
• CD Recorder
• MD Recorder
• Multitrack Recorder
• Electric Musical Instrument
DESCRIPTION
The PCM1850A/1851A is a high-performance, low-cost, single-chip stereo analog-to-digital converter with a
single-ended analog front end that consists of a 6-stereo-input multiplexer and wide-range PGA. The
PCM1850A/1851A includes a delta-sigma modulator with 64-times oversampling, a digital decimation filter and a
low-cut filter that removes the dc component of the input signal. For various applications, the PCM1850A/1851A
supports two modes (master and slave) and four data formats through a serial control interface, SPI for the
PCM1850A and I²C for the PCM1851A. The PCM1850A/1851A is suitable for a wide variety of cost-sensitive
DVD/CD/MD recorder and receiver applications where good performance and operation from a 5-V analog
supply and 3.3-V digital supply is required. The PCM1850A/1851A is fabricated using a highly advanced CMOS
process and is available in a small 32-pin TQFP package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
System Two, Audio Precision are trademarks of Audio Precision, Inc.
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006, Texas Instruments Incorporated