Features: `PCM2904: Without S/PDIF
`PCM2906: With S/PDIF
`On-Chip USB Interface:
- With Full-Speed Transceivers
- Fully Compliant With USB 1.1 pecification
- Certified by USB-IF
- Partially Programmable Descriptors(1)
- 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 Typical (VBUS)
`Stereo ADC:
- Analog Performance at V = 5 VBUS
- 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 V = 5 V BUS
- 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, Lead-Free Product
Application·USB Audio Speaker
·USB Headset
·USB Monitor
·USB Audio Interface Box
Pinout
Specifications
| |
PCM2904/PCM2906 |
UNIT |
| Supply voltage, VBUS |
-0.3 to 6.5 |
V |
| Ground voltage differences, AGNDC, AGNDP, AGNDX, DGND, DGNDU |
±0.1 |
V |
| Digital input voltage |
SEL0, SEL1, TEST0 (DIN)(2) |
-0.3 to 6.5 |
V |
| D+, D, HID0, HID1, HID2, XTI, XTO, TEST1 (DOUT)(2) , SSPND |
-0.3 to (VDDI + 0.3)< 4 |
| Analog input voltage |
VIN L, VIN R, VCOM , VOUT R, VOUT L |
-0.3 to VCCCI + 0.3)< 4 |
V |
| VCCCI , VCCP1I , VCCP2I , VCCXI , VDDI |
-0.3 to 4 |
| Input current (any pins except supplies) |
±10 |
mA |
| Ambient temperature under bias |
-40 to 125 |
|
| Storage temperature, Tstg |
-55 to 150 |
|
| Junction temperature TJ |
150 |
|
| Lead temperature (soldering) |
260 |
, 5 s |
| Package temperature (IR reflow, peak) |
250 |
|
(1)Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2)( ): PCM2906
DescriptionThe PCM2906 is Texas Instruments single-chip USB stereo audio codec with USB-compliant full-speed protocol controller and S/PDIF (PCM2906 only). The USB protocol controller works with no software code, but the USB descriptors can be modified in some areas (for example, vendor ID/product ID). The PCM2906 employs SpAct(TM) 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.
PCM2906 Data Sheet
