PCM2702_09 Datasheet, PDF (1/17 Pages) Texas Instruments – DIGITAL-TO-ANALOG CONVERTER

PCM2702
PCM2702
SBAS142A – MAY 2000 – REVISED NOVEMBER 2007
16-Bit Stereo
DIGITAL-TO-ANALOG CONVERTER
with
Interface
FEATURES
q INTEGRATED USB INTERFACE:
Full-Speed Transceiver Supports 12Mbps
Data Transfer
Fully Compliant with the USB 1.0 Specifi-
cation
Adaptive Mode for Isochronous Transfer
Self-Powered Device
q ACCEPTS 16-BIT STEREO AND MONO USB
AUDIO DATA STREAMS
q ANALOG PERFORMANCE (V_CC = 5V):
Dynamic Range: 100dB (typ at 16-bit)
SNR: 105dB (typ)
THD+N: 0.002% (typ at 16-bit)
Full-Scale Output: 3.1V_PP
q 8X OVERSAMPLING DIGITAL FILTER:
Passband: 0.454f_S
Stopband: 0.546f_S
Passband Ripple: ±0.002dB
Stopband Attenuation: –82dB
q SAMPLING RATE (F_S): 32kHz, 44.1kHz, 48kHz
q ON-CHIP CLOCK GENERATOR
WITH SINGLE 12MHz CLOCK SOURCE
q MULTI-FUNCTIONS:
Digital Attenuator: 0dB to –64dB, 1dB/step
Soft Mute
Zero Flag
Suspend Flag
Playback Flag
q DUAL POWER SUPPLIES:
+5V for Analog Portion
+3.3V for Digital Portion
q PACKAGE: SSOP-28
APPLICATIONS
q STAND-ALONE USB AUDIO SPEAKERS
q CRT/LCD INTEGRATED USB AUDIO SPEAKERS
q USB AUDIO AMPLIFIERS
q OTHER USB AUDIO APPLICATIONS
DESCRIPTION
The PCM2702 is a single chip digital-to-analog converter
offering two D/A output channels and an integrated USB 1.0
compliant interface controller. The newly developed SpAct™
(Sampling Period Adaptive Controlled Tracking) system re-
covers a stable, low-jitter clock for internal PLL and DAC
operation from the USB interface audio data.
The PCM2702 is based upon Texas Instruments Enhanced
Multi-level Delta-Sigma Modulator, an 8x oversampling digi-
tal interpolation filter, and an analog output low-pass filter.
The PCM2702 can accept a 48kHz, 44.1kHz and 32kHz
sampling rates, using either 16-bit stereo or monaural audio
data. Digital attenuation and soft-mute features are included,
and are controlled via USB audio class request.
Patents Pending.
SpAct™ is a trademark of Texas Instruments.
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.
All 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 Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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Copyright © 2000-2007, Texas Instruments Incorporated