PCM2904 具有 USB 接口、单端输入/输出和 SPDI/F 的立体声音频编解码器

The PCM2904/2906 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 PCM2904/2906 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.

	PCM2901	PCM2904	PCM2912A
SNR DAC / SNR ADC (Typ) (dB)	96 / 89	96 / 89	92 / 92
# DACs / # ADCs	2 / 2	2 / 2	2 / 1
# Inputs / # Outputs	2 / 2	2 / 2	1 / 2
Sampling Rate (Max) (kHz)	48	48	48
Resolution (Bits)	16	16	16
Control Interface	HID	HID	H/W
Supply Voltage(s) (V)	3.3	5	5
Pd (Typ) (mW)	178	280	425
Additional Features		500mA Max Power Configuration	USB Interface, Mic Bias, PGAs, Sidetone
Operating Temperature Range (C)	0 to 70	-25 to 85	-25 to 85
Pin/Package	28SSOP	28SSOP	32TQFP
Approx. Price (US$)	4.45 \| 1ku	4.45 \| 1ku	4.50 \| 1ku

PCM2904 特性

PCM2904: Without S/PDIF
PCM2906: 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(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 VBUS = 5 V
  - THD+N = 0.01%
  - SNR = 89 dB

PCM2904 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
PCM2904E	ACTIVE	0 to 70	5.35 \| 1ku	SSOP (DB) \| 28	47 \| TUBE
PCM2904E/2K	ACTIVE	0 to 70	4.45 \| 1ku	SSOP (DB) \| 28	2000 \| LARGE T&R
PCM2904E/2KG4	ACTIVE	0 to 70	4.45 \| 1ku	SSOP (DB) \| 28	2000 \| LARGE T&R
PCM2904EG4	ACTIVE	0 to 70	5.35 \| 1ku	SSOP (DB) \| 28	47 \| TUBE

PCM2904 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
PCM2904E	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	PCM2904E	PCM2904E
PCM2904E/2K	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	PCM2904E/2K	PCM2904E/2K
PCM2904E/2KG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	PCM2904E/2KG4	PCM2904E/2KG4
PCM2904EG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	PCM2904EG4	PCM2904EG4

PCM2904 工具与软件

培训内容	型号	软件/工具类型
PCM2904 评估模块	PCM2904EVM-U	开发电路板/EVM