PCM1795 32 位 192kHz 采样高级分段音频立体声 DAC
|
PCM1795 |
| SNR(Typ)(dB) |
123 |
| # DACs |
2 |
| # Inputs / # Outputs |
0 / 2 |
| Sampling Rate(Max)(kHz) |
200 |
| Resolution(Bits) |
32 |
| Digital Audio Interface |
L,R,I2S,TDMCA,DSD |
| Control Interface |
SPI,I2C,TDMCA |
| Analog Supply(V) |
4.75 - 5.25 |
| Digital Supply (up to 5 V)(V) |
3 - 3.6 |
| Pd(Typ)(mW) |
32-Bit Digital Processing |
| Operating Temperature Range(°C) |
-25 to 85 |
| Pin/Package |
28SSOP |
PCM1795 描述
The PCM1795 is a monolithic CMOS integrated circuit that includes stereo digital-to-analog converters (DACs) and support circuitry in a small SSOP-28 package. The data converters use TI's advanced segment DAC architecture to achieve excellent dynamic performance and improved tolerance to clock jitter. The PCM1795 provides balanced current outputs, allowing the user to optimize analog performance externally. The PCM1795 accepts pulse code modulation (PCM) and direct stream digital (DSD) audio data formats, providing an easy interface to audio digital signal processors (DSPs) and decoder chips. The PCM1795 also interfaces with external digital filter devices such as the DF1704, DF1706, and the PMD200 from Pacific Microsonics.
PCM1795 特性
- 32-Bit Resolution
- Analog Performance:
- Dynamic Range: 123 dB
- THD+N: 0.0005%
- Differential Current Output: 3.9 mAPP
- 8× Oversampling Digital Filter:
- Stop Band Attenuation: -98 dB
- Passband Ripple: ±0.0002 dB
- Sampling Frequency: 10 kHz to 200 kHz
- System Clock: 128, 192, 256, 384, 512, or 768 fS With Autodetect
- Accepts 16-, 24-, and 32-Bit Audio Data
- PCM Data Formats: Standard, I2S, and Left-Justified
- DSD Format Interface Available
- Interface Available for Optional External Digital Filter or DSP
- TDMCA or Serial Port (SPI/I2C)
- User-Programmable Mode Controls:
- Digital Attenuation: 0 dB to -120 dB, 0.5-dB/Step
- Digital De-Emphasis
- Digital Filter Roll-Off: Sharp or Slow
- Soft Mute
PCM1795 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 |
| PCM1795DB |
ACTIVE |
-25 to 85 |
3.95 | 1ku |
SSOP (DB) | 28 |
50 | TUBE |
PCM1795 |
| PCM1795DBR |
ACTIVE |
-25 to 85 |
3.95 | 1ku |
SSOP (DB) | 28 |
2000 | LARGE T&R |
PCM1795 |
PCM1795 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 |
| PCM1795DB |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
PCM1795DB |
| PCM1795DBR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
PCM1795DBR |
PCM1795 应用技术支持与电子电路设计开发资源下载
- PCM1795 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)
PCM1795 工具与软件