PCM2704C Datasheet, PDF (1/40 Pages) Texas Instruments – Stereo Audio DAC with USB Interface, Single-Ended Headphone Output and S/PDIF Output

Burr-Brown Audio
PCM2704C, PCM2705C
PCM2706C, PCM2707C
www.ti.com
SBFS036A – AUGUST 2011 – REVISED JULY 2012
Stereo Audio DAC with USB Interface,
Single-Ended Headphone Output and S/PDIF Output
Check for Samples: PCM2704C, PCM2705C, PCM2706C, PCM2707C
FEATURES
1
•23456 On-Chip USB Interface:
– No Dedicated Device Driver Needed
– Full-Speed Transceivers
– Fully Compliant with USB 2.0 Specification
– USB 1.1 Descriptors with USB Audio
Class Support
– Certified by USB-IF
– Partially Programmable Descriptors
– Adaptive Isochronous Transfer for
Playback
– Bus-Powered or Self-Powered Operation
• Sampling Rates: 32 kHz, 44.1 kHz, 48 kHz
• On-Chip Clock Generator with Single 12-MHz
Clock Source
• Single Power Supply:
– Bus-Powered: 5 V, Typical (V_BUS)
– Self-Powered: 3.3 V, Typical
• 16-Bit Delta-Sigma Stereo DAC
– Analog Performance at 5 V (Bus-Powered),
3.3 V (Self-Powered):
– THD+N: 0.006% R_L > 10 kΩ, Self-
Powered
– THD+N: 0.025% R_L = 32 Ω
– SNR = 98 dB
– Dynamic Range: 98 dB
– P_O = 12 mW, R_L = 32 Ω
– Oversampling Digital Filter
– Passband Ripple = ±0.04 dB
– Stop-Band Attenuation = –50 dB
– Single-Ended Voltage Output
– Analog LPF Included
• Multiple Functions:
– Up to Eight Human Interface Device (HID)
Interfaces (Model and Setting Dependent)
– Suspend Flag
– S/PDIF Out with SCMS
– External ROM Interface (PCM2704C/6C)
– Serial Programming Interface
(PCM2705C/7C)
– I²S™ Interface (Selectable on
PCM2706C/7C)
• Packages:
– 28-Pin SSOP (PCM2704C/5C)
– 32-Pin TQFP (PCM2706C/7C)
APPLICATIONS
• USB Headphones
• USB Audio Speaker
• USB CRT/LCD Monitor
• USB Audio Interface Box
• USB-Featured Consumer Audio Product
DESCRIPTION
The PCM2704C/5C/6C/7C are TI's single-chip USB
stereo audio digital-to-analog converters (DACs) with
USB 2.0 compliant full-speed protocol controller and
S/PDIF. The USB-protocol controller works with no
software code, but USB descriptors can be modified
in some areas (for example, vendor ID/product ID)
through the use of an external ROM (PCM2704C/6C)
or serial peripheral interface (SPI) (PCM2705C/7C).
The PCM2704C/5C/6C/7C also employ SpAct™
architecture, TI's unique system that recovers the
audio clock from USB packet data. On-chip analog
phase-locked loops (PLLs) with SpAct enable
playback with low clock jitter.
1
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.
SpAct is a trademark of Texas Instruments.
2
System Two, Audio Precision are trademarks of Audio Precision, Inc.
3
SPI is a trademark of Motorola, Inc.
4
I²S, I²C are trademarks of NXP Semiconductors.
5
All other trademarks are the property of their respective owners.
6
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 © 2011–2012, Texas Instruments Incorporated