PCM1727 具有可编程双路 PLL 的 94dB SNR 立体声 DAC
|
PCM1727 |
| SNR(Typ)(dB) |
92 |
| # DACs |
2 |
| # Inputs / # Outputs |
0 / 2 |
| Sampling Rate(Max)(kHz) |
96 |
| Resolution(Bits) |
24 |
| Digital Audio Interface |
R,I2S |
| Control Interface |
SPI |
| Analog Supply(V) |
4.5 - 5.5 |
| Digital Supply (up to 5 V)(V) |
4.5 - 5.5 |
| Pin/Package |
24SSOP |
PCM1727 描述
The PCM1727 is a complete low cost stereo audio digital-to-analog converter (DAC) with a dual phase-locked loop (PLL) circuit included. PLL-1 derives a fixed 33.8688MHz (768fS, fS = 44.1kHz) system clock (SCKO-1), and PLL-2 derives both the 384fS (fS = 44.1k/48k/96kHz) system clock (SCKO-2), and the 768fS (fS = 44.1k/48kHz)/384fS (fS = 96kHz) system clock (SCKO-3) from an external 27MHz reference frequency. The DAC contains a 3rd-order Delta-Sigma (
) modulator, a digital interpolation filter, and an analog output amplifier. The PCM1727 can accept 16-, 20-, or 24-bit input data in either normal or I2S formats.
The digital filter performs an 8X interpolation function and includes selectable features such as soft mute, digital attenuation and digital de-emphasis.
PCM1727 特性
- ACCEPTS 16-, 20-, OR 24-BIT INPUT DATA
- COMPLETE STEREO DAC: Includes Digital Filter and Output Amp
- DYNAMIC RANGE: 92dB
- MULTIPLE SAMPLING FREQUENCIES: fS = 44.1kHz, 48kHz, 96kHz
- PROGRAMMABLE DUAL PLL CIRCUIT: 27MHz Master Clock Input
- GENERATED SYSTEM CLOCK
- SCKO1: 33.8688MHz
- SCK02: 384fS
- SCK03: 768fS (44.1k/48kHz), 384fS (96kHz)
- NORMAL OR I2STM DATA INPUT FORMATS
- SELECTABLE FUNCTIONS:
- Soft Mute, Analog Output Mode
- Digital Attenuator (256 Steps)
- Digital De-emphasis
- +5V SINGLE POWER SUPPLY
PCM1727 芯片订购指南
| 器件 |
状态 |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| PCM1727E |
ACTIVE |
2.55 | 1ku |
SSOP (DB) | 24 |
58 | TUBE |
PCM1727E |
| PCM1727EG4 |
ACTIVE |
2.35 | 1ku |
SSOP (DB) | 24 |
58 | TUBE |
PCM1727E |
PCM1727 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 |
| PCM1727E |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
PCM1727E |
| PCM1727EG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
PCM1727EG4 |
PCM1727EG4 |
PCM1727 应用技术支持与电子电路设计开发资源下载
- PCM1727 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)
PCM1727 工具与软件