PCM1798 123dB SNR 立体声 DAC（硬件控制）

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pcm1798 123dB SNR 立体声 DAC（硬件控制）

pcm1798

SNR(Typ)(dB) 123  

# 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) 115  

Additional Features DSD Support  

Operating Temperature Range(°C) -25 to 85  

Pin/Package 28SSOP

pcm1798 描述

The PCM1798 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 pcm1798 provides balanced current outputs, allowing the user to optimize analog performance externally. Sampling rates up to 200 kHz are supported.

pcm1798 特性

24-Bit Resolution

Analog Performance:

Dynamic Range: 123 dB

THD+N: 0.0005%

Differential Current Output: 4 mA p-p

8× Oversampling Digital Filter:

Stop-Band Attenuation: –98 dB

Pass-Band 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- and 24-Bit Audio Data

PCM Data Formats: Standard, I²S, and Left-Justified

Interface Available for Optional 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

Small 28-Lead SSOP Package

pcm1798 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

PCM1798DB ACTIVE -25 to 85 3.25 | 1ku SSOP (DB) | 28 47 | TUBE pcm1798

PCM1798DBG4 ACTIVE -25 to 85 3.25 | 1ku SSOP (DB) | 28 47 | TUBE pcm1798

PCM1798DBR ACTIVE -25 to 85 2.95 | 1ku SSOP (DB) | 28 2000 | LARGE T&R pcm1798

PCM1798DBRG4 ACTIVE -25 to 85 2.95 | 1ku SSOP (DB) | 28 2000 | LARGE T&R pcm1798

pcm1798 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

PCM1798DB Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM pcm1798DB

PCM1798DBG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM PCM1798DBG4 pcm1798DBG4

PCM1798DBR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM pcm1798DBR

PCM1798DBRG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM PCM1798DBRG4 pcm1798DBRG4

pcm1798 应用技术支持与电子电路设计开发资源下载

pcm1798 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 64KB)

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)

pcm1798 工具与软件

名称 型号 公司 工具/软件类型

音频的快速搜索选择工具 AUDIO_SELECTION_TOOL Texas Instruments 免费评估工具

DEM-DAI1798 评估模块 DEM-DAI1798 Texas Instruments 开发电路板/EVM

PurePath™ Studio 图形开发环境（音频） AICPUREPATH_STUDIO Texas Instruments 编译器/汇编器/连接器

用于数字双二阶滤波器的系数计算器 COEFFICIENT-CALC Texas Instruments 计算实用程序

用于音频转换器的软件驱动程序 CODECDRIVERS-SW Texas Instruments  应用软件 

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