PCM1794A 132dB SNR 最高性能立体声 DAC（硬件控制）
|
PCM1794A |
| SNR(Typ)(dB) |
127 |
| # DACs |
2 |
| # Inputs / # Outputs |
0 / 2 |
| Sampling Rate(Max)(kHz) |
192 |
| Resolution(Bits) |
24 |
| Digital Audio Interface |
L,R,I2S |
| Control Interface |
H/W |
| Analog Supply(V) |
4.75 - 5.25 |
| Digital Supply (up to 5 V)(V) |
3 - 3.6 |
| Pd(Typ)(mW) |
205 |
| Operating Temperature Range(°C) |
-25 to 85 |
| Pin/Package |
28SSOP |
PCM1794A 描述
The PCM1794A is a monolithic CMOS integrated circuit that includes stereo digital-to-analog converters and support circuitry in a small 28-lead SSOP package. The data converters use TI’s advanced segment DAC architecture to achieve excellent dynamic performance and improved tolerance to clock jitter. The PCM1794A provides balanced current outputs, allowing the user to optimize analog performance externally. Sampling rates up to 200 kHz are supported.
PCM1794A 特性
- 24-Bit Resolution
- Analog Performance:
- Dynamic Range:
132 dB (9 V RMS, Mono)
129 dB (4.5 V RMS, Stereo)
127 dB (2 V RMS, Stereo)
- THD+N: 0.0004%
- Differential Current Output: 7.8 mA p-p
- 8× Oversampling Digital Filter:
- Stop-Band Attenuation: –130 dB
- Pass-Band Ripple: ±0.00001 dB
- Sampling Frequency: 10 kHz to 200 kHz
- System Clock: 128, 192, 256, 384, 512, or 768 fS With Autodetect
- Accepts 16- and 24-Bit Audio Data
- PCM Data Formats: Standard, I2S, and Left-Justified
- Optional Interface Available to External Digital Filter or DSP
- Digital De-Emphasis
- Digital Filter Rolloff: Sharp or Slow
- Soft Mute
- Zero Flag
- Dual-Supply Operation:
- 5-V Analog, 3.3-V Digital
- 5-V Tolerant Digital Inputs
PCM1794A 芯片订购指南
| 器件 |
状态 |
温度 (oC) |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| PCM1794ADB |
ACTIVE |
-25 to 85 |
2.50 | 1ku |
SSOP (DB) | 28 |
47 | TUBE |
PCM1792 |
| PCM1794ADBG4 |
ACTIVE |
-25 to 85 |
2.50 | 1ku |
SSOP (DB) | 28 |
47 | TUBE |
PCM1792 |
| PCM1794ADBR |
ACTIVE |
-25 to 85 |
2.25 | 1ku |
SSOP (DB) | 28 |
2000 | LARGE T&R |
PCM1792 |
| PCM1794ADBRG4 |
ACTIVE |
-25 to 85 |
2.25 | 1ku |
SSOP (DB) | 28 |
2000 | LARGE T&R |
PCM1792 |
PCM1794A 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 |
| PCM1794ADB |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
PCM1794ADB |
| PCM1794ADBG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
PCM1794ADBG4 |
PCM1794ADBG4 |
| PCM1794ADBR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
PCM1794ADBR |
| PCM1794ADBRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
PCM1794ADBRG4 |
PCM1794ADBRG4 |
PCM1794A 应用技术支持与电子电路设计开发资源下载
- PCM1794A 数据资料 dataSheet 下载.PDF
- TI 德州仪器音频数模转换器产品选型与价格参考 . xls
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
- Shelf-Life Evaluation of Lead-Free Component Finishes (PDF
1305 KB)
- Analog-to-Digital Converter Grounding Practices Affect System
Performance (PDF 56 KB)
- Principles of Data Acquisition and Conversion (PDF 50 KB)
- Interleaving Analog-to-Digital Converters (PDF 64 KB)
- What
Designers Should Know About Data Converter Drift (PDF 95 KB)
- Giving Delta-Sigma Converters a Gain Boost with a Front End
Analog Gain Stage (PDF 70 KB)
- Programming Tricks for Higher Conversion Speeds Utilizing Delta
Sigma Converters (PDF 105 KB)
PCM1794A 工具与软件