PCM2906B 具有线性输出和 S/PDIF 的、总线供电的立体声 USB 编解码器

The PCM2906B is Texas Instruments' single-chip, USB, stereo audio codec with a USB-compliant full-speed protocol controller and S/PDIF. The USB protocol controller requires no software code, but the USB descriptors can be modified in some areas (for example, vendor ID and/or product ID). The PCM2906B 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 as well as independent playback and record sampling rates.

	PCM2903B	PCM2906B
SNR DAC / SNR ADC (Typ) (dB)	96 / 89	93 / 89
# DACs / # ADCs	2 / 2	2 / 2
# Inputs / # Outputs	2 / 2	2 / 2
Sampling Rate (Max) (kHz)	48	48
Resolution (Bits)	16	16
Control Interface	HID	HID
Supply Voltage(s) (V)	3.3	5
Pd (Typ) (mW)	178	280
Additional Features	S/PDIF I/O	S/PDIF I/O,500mA Max Power Configuration
Operating Temperature Range (C)	-25 to 85	-25 to 85
Pin/Package	28SSOP	28SSOP
Approx. Price (US$)	4.80 \| 1ku	4.80 \| 1ku

PCM2906B 特性

On-Chip USB Interface:
- With Full-Speed Transceivers
- Fully Compliant with USB 2.0 Specification
- 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
S/PDIF Input/Output
Single Power Supply:
- 5 V Typical (VBUS)
Stereo ADC:
- Analog Performance at VBUS = 5 V:
  - THD+N = 0.01%
  - SNR = 89 dB

PCM2906B 芯片订购指南

器件	状态	温度	价格（美元）	封装 \| 引脚	封装数量 \| 封装载体	丝印标记
PCM2906BDB	ACTIVE	-25 to 85	4.80 \| 1ku	SSOP (DB) \| 28	50 \| TUBE
PCM2906BDBR	ACTIVE	-25 to 85	4.80 \| 1ku	SSOP (DB) \| 28	2000 \| LARGE T&R

PCM2906B 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
PCM2906BDB	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	PCM2906BDB	PCM2906BDB
PCM2906BDBR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	PCM2906BDBR	PCM2906BDBR

PCM2906B 工具与软件

培训内容	型号	软件/工具类型
PCM2906B 评估模块	PCM2906BEVM-U	开发电路板/EVM