PCM1772PWR - 24-Bit Stereo DAC with Line Output | Texas Instruments
料号： PCM1772PWR ✓ 量产中PCM1772PWR 概述
A DAC converts digital audio samples into an analog voltage that can drive an audio amplifier, headphone stage, mixer, or line-level input. The PCM1772PWR is a stereo converter with two analog output channels and integrated line-output circuitry, reducing the need for separate output buffers in many compact audio products. Its 24-bit data resolution is suitable for CD-derived audio, digital media players, communication terminals, and embedded audio equipment.
The PCM1772 uses TI’s enhanced multilevel delta-sigma architecture, combining noise shaping with multilevel amplitude quantization to improve dynamic performance and tolerance to clock and data errors. The 98 dB SNR specification indicates a low-noise conversion path, while the integrated line-output amplifier simplifies analog routing to downstream circuitry. The serial three-wire interface reduces pin count compared with parallel DAC architectures and supports digital audio from microcontrollers, decoders, and audio processors.
Typical applications include portable and compact audio equipment, USB and digital-audio accessories, communication consoles, consumer audio modules, and low-voltage stereo playback systems. The 16-pin TSSOP package also simplifies PCB assembly in designs where surface-mount construction is required.
When designing around the PCM1772PWR, pay particular attention to digital-interface timing, analog output filtering, supply decoupling, and the distinction between digital ground and analog ground connections. Use the manufacturer datasheet pin-description table and recommended application circuit when assigning signal, power, and return paths on the PCB.
直接替换替代料： PCM1772PWR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
PCM1772PW
✅ 直接替换联系询价
查看数据手册 →PCM1772PWG4
✅ 直接替换📋 参考替代料（不在目录中）
PCM1772PWR.B
✅ 直接替换📋 参考替代料（不在目录中）
PCM1772PWR 最大额定值与电气特性
| Device Type | Stereo audio digital-to-analog converter (DAC) |
| Data Resolution | 24 bit |
| 采样率 | 50 kHz |
| Digital Interface | I2S-compatible serial interface |
| 接口类型 | 3-wire serial |
| 输出配置 | Stereo voltage output |
| Signal-to-Noise Ratio | 98 dB |
| Output Circuitry | Integrated line-out amplifier |
| Control | Software control |
| Converter Architecture | Enhanced multilevel delta-sigma architecture |
| Noise Shaping | Yes |
| Amplitude Quantization | Multilevel |
| 封装 | 16-pin TSSOP (PW) |
| 安装类型 | Surface Mount |
PCM1772PWR 16-pin tssop (pw) 引脚配置指南
PCM1772PWR（16-pin tssop (pw) 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： PCM1772PWR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
PCM1772PWR 适用于 6 应用s: Compact Digital Audio Playback, USB Audio Accessory, Portable Media Player, Communication Terminal Audio, Digital Audio Module, Low-Noise Stereo Line Output.
Compact Digital Audio Playback
The PCM1772PWR fits compact playback equipment because it combines a 24-bit stereo conversion path with integrated line-output circuitry in a 16-pin TSSOP package. A microcontroller or audio decoder can provide I2S-compatible clock and data, while the converter generates two analog stereo outputs for a downstream amplifier. The 98 dB SNR specification supports low-noise playback from CD-derived or compressed digital sources. Designers should follow the reference circuit for decoupling and output filtering, and verify the selected amplifier input range against the DAC output voltage.
推荐
USB Audio Accessory
A USB audio accessory can use the PCM1772PWR as the stereo analog-output stage after a USB audio controller decodes the digital stream. The 3-wire serial interface reduces board-routing requirements, and the integrated line-output circuitry simplifies the transition from the digital converter to an analog headphone or line amplifier. The 24-bit resolution preserves source detail for listening devices, while the 98 dB SNR helps maintain a quiet noise floor. Keep USB and digital processor traces away from the analog outputs and use the datasheet filter network.
推荐
Portable Media Player
The low-power stereo DAC architecture of the PCM1772PWR suits portable media players where analog conversion must follow a battery-limited digital audio path. Its integrated line-out amplifier can reduce the need for a separate output buffer, while the small TSSOP-16 footprint supports dense board layouts. The 50 kHz sampling-rate capability covers standard-rate digital audio. Before release, confirm supply-voltage limits, quiescent current, startup behavior, and headphone drive requirements in the manufacturer datasheet.
推荐
Communication Terminal Audio
Voice terminals and communication equipment can use the PCM1772PWR to produce stereo line-level audio from a digital speech or conferencing processor. The integrated line-out stage provides a defined analog destination for the serial digital stream, while 24-bit resolution supports modern digital audio formats. The 98 dB SNR specification is useful for intelligibility-focused listening and conferencing designs. Maintain a continuous analog ground path and decouple the supply close to the device to prevent digital switching activity from modulating the output.
推荐
Digital Audio Module
The PCM1772PWR is appropriate for a pluggable or embedded digital audio module that exposes analog stereo outputs to a carrier board. Its 3-wire interface permits a short digital connection from an audio codec or processor, and the 16-pin TSSOP package simplifies surface-mount assembly. The integrated line-out amplifier allows a compact module to provide usable analog outputs without a separate discrete buffer. Validate connector grounding, analog output filtering, and channel matching during prototype testing.
推荐
Low-Noise Stereo Line Output
For designs requiring a clean stereo line-level source, the PCM1772PWR combines 24-bit conversion, a 98 dB SNR specification, and integrated line-output amplifiers. The device can feed a mixer, preamplifier, or line-input stage through the recommended external filtering network. Its delta-sigma conversion architecture uses noise shaping and multilevel amplitude quantization to improve dynamic performance. Pay attention to output loading and analog filter selection, and compare measured THD+N and channel separation with the system requirements rather than relying only on headline SNR.
推荐
推荐产品汇总
工程参考数据： PCM1772PWR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PCM1772PW | PCM1772PWG4 | PCM1772PWR.B |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | TSSOP-16 (PW) | TSSOP-16 (PW) | TSSOP-16 (PW) | TSSOP-16 (PW) |
| Device Type | Stereo audio DAC with line-out | Stereo audio DAC with line-out | Stereo audio DAC with line-out | Stereo audio DAC with line-out |
| Resolution | 24 bit | 24 bit | 24 bit | 24 bit |
| Sampling Rate | 50 kHz | 50 kHz | 50 kHz | 50 kHz |
| Signal-to-Noise Ratio | 98 dB | 98 dB | 98 dB | 98 dB |
| Digital Interface | I2S-compatible, 3-wire serial | I2S-compatible, 3-wire serial | I2S-compatible, 3-wire serial | I2S-compatible, 3-wire serial |
| Output Circuitry | Integrated line-out amplifier | Integrated line-out amplifier | Integrated line-out amplifier | Integrated line-out amplifier |
关键差异点
- Integrated line-output circuitry simplifies the analog stage （对比 Generic discrete-output audio DAC)
- 24-bit conversion with a 98 dB SNR specification （对比 Lower-resolution audio DAC)
- Compact 16-pin TSSOP interface and package （对比 Parallel-interface DAC with a larger package)
设计说明
Route the digital clock and data as short, continuous traces and keep the analog outputs away from switching nodes and high-current return paths. Place supply-decoupling capacitors close to the relevant device pins and follow the TI reference circuit for the capacitor values and placement. Provide an uninterrupted analog ground reference beneath and around the converter so the line outputs share a low-impedance return with the downstream amplifier.
Verify the serial-interface timing and supported data format against the PCM1772 datasheet before connecting a source device. The I2S-compatible three-wire interface reduces routing complexity, but clock jitter, source levels, and edge timing can still affect conversion quality. Use the recommended digital filtering and analog reconstruction network, and measure THD+N, channel separation, and output level on the assembled board rather than assuming ideal source behavior.
Do not substitute by package appearance alone. A TSSOP-16 audio DAC can use a different pin assignment, supply sequence, output range, or digital format. For PCM1772PWR alternatives, verify every pin against the manufacturer datasheet and confirm the output-voltage range against the receiving amplifier. Also distinguish ordering codes that change tape-and-reel or green-rocess handling from genuinely different electrical devices.
合规信息
The verified manufacturer and distributor listings identify the PCM1772 device, package, resolution, sampling rate, SNR, interface, and line-out functions but do not state the individual compliance declarations.