The PCM270xC 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 and PCM2706C) or serial peripheral interface (SPI) (PCM2705C and PCM2707C). The PCM270xC 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.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
PCM2704C | SSOP (28) | 5.30 mm × 10.20 mm |
PCM2705C | ||
PCM2706C | TQFP (32) | 7.00 mm × 7.00 mm |
PCM2707C |
Changes from A Revision (July 2012) to B Revision
Changes from * Revision (August 2011) to A Revision
FEATURE | PCM2704C | PCM2705C | PCM2706C | PCM2707C |
---|---|---|---|---|
Supply Voltage (V) | 3.3, 5 | 3.3, 5 | 3.3, 5 | 3.3, 5 |
Control Interface | HID | HID, SPI | HID, SPI | HID, SPI |
Additional Features | S/PDIF Output HP Output Ext. ROM I/F |
S/PDIF Output HP Output |
S/PDIF Output HP Output Ext. ROM I/F |
S/PDIF Output HP Output |
Package Group | SSOP | SSOP | TQFP | TQFP |