描述 Description

DESCRIPTION
The PCM2900/2902 is Texas Instruments single-chip USB stereo audio codec with USB-compliant full-speed protocol controller and S/PDIF (only PCM2902). The USB protocol controller works with no software code, but the USB descriptors can be modified in some areas (e.g., vendor ID/product ID). The PCM2900/2902 employs SpAct? architecture, TI’s unique system that recovers the audio clock from USB packet data. On-chip analog PLLs with SpAct enable playback and record with low clock jitter and with independent playback and record sampling rates.FEATURES
● PCM2900: Without S/PDIF
● PCM2902: With S/PDIF
● On-Chip USB Interface:
?? ? With Full-Speed Transceivers
?? ? Fully Compliant With USB 1.1
????? Specification
?? ? Certified by USB-IF
?? ? Partially Programmable Descriptors

?? ? USB Adaptive Mode for Playback
?? ? USB Asynchronous Mode for Record
?? ? Bus Powered
● 16-Bit Delta Sigma ADC and DAC
● Sampling Rate:
?? ? DAC: 32, 44.1, 48 kHz
?? ? ADC: 8, 11.025, 16, 22.05, 32, 44.1, 48 kHz
● On-Chip Clock Generator:
?? ? With Single 12-MHz Clock Source
● Single Power Supply: 5 V TYP (VBUS)
● Stereo ADC
?? ? Analog Performance at VBUS = 5 V
????? ? THD+N = 0.01%
????? ? SNR = 89 dB
????? ? Dynamic Range = 89 dB
?? ? Decimation Digital Filter
????? ? Pass-Band Ripple = ±0.05 dB
????? ? Stop-Band Attenuation = –65 dB
?? ? Single-Ended Voltage Input
?? ? Antialiasing Filter Included
?? ? Digital LCF Included
● Stereo DAC
? Analog Performance at VBUS = 5 V
?? ? THD+N = 0.005%
?? ? SNR = 96 dB
?? ? Dynamic Range = 93 dB
? Oversampling Digital Filter
?? ? Pass-Band Ripple = ±0.1 dB
?? ? Stop-Band Attenuation = –43 dB
? Single-Ended Voltage Output
? Analog LPF Included
● Multifunctions:
?? ? Human Interface Device (HID) Volume ±
????? Control and Mute Control
?? ? Suspend Flag
● Package: 28-Pin SSOPAPPLICATIONS
● USB Audio Speaker
● USB Headset
● USB Monitor
● USB Audio Interface Box

特性 Features

● PCM2900: Without S/PDIF
● PCM2902: With S/PDIF
● On-Chip USB Interface:
?? ? With Full-Speed Transceivers
?? ? Fully Compliant With USB 1.1
????? Specification
?? ? Certified by USB-IF
?? ? Partially Programmable Descriptors

?? ? USB Adaptive Mode for Playback
?? ? USB Asynchronous Mode for Record
?? ? Bus Powered
● 16-Bit Delta Sigma ADC and DAC
● Sampling Rate:
?? ? DAC: 32, 44.1, 48 kHz
?? ? ADC: 8, 11.025, 16, 22.05, 32, 44.1, 48 kHz
● On-Chip Clock Generator:
?? ? With Single 12-MHz Clock Source
● Single Power Supply: 5 V TYP (VBUS)
● Stereo ADC
?? ? Analog Performance at VBUS = 5 V
????? ? THD+N = 0.01%
????? ? SNR = 89 dB
????? ? Dynamic Range = 89 dB
?? ? Decimation Digital Filter
????? ? Pass-Band Ripple = ±0.05 dB
????? ? Stop-Band Attenuation = –65 dB
?? ? Single-Ended Voltage Input
?? ? Antialiasing Filter Included
?? ? Digital LCF Included
● Stereo DAC
? Analog Performance at VBUS = 5 V
?? ? THD+N = 0.005%
?? ? SNR = 96 dB
?? ? Dynamic Range = 93 dB
? Oversampling Digital Filter
?? ? Pass-Band Ripple = ±0.1 dB
?? ? Stop-Band Attenuation = –43 dB
? Single-Ended Voltage Output
? Analog LPF Included
● Multifunctions:
?? ? Human Interface Device (HID) Volume ±
????? Control and Mute Control
?? ? Suspend Flag
● Package: 28-Pin SSOP

應(yīng)用 Application

● USB Audio Speaker
● USB Headset
● USB Monitor
● USB Audio Interface Box