PCM1772PWR - 24-Bit Stereo DAC with Line Output | Texas Instruments
MPN： PCM1772PWR ✓ 啟用中PCM1772PWR 概覽
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.
直接替換替代品，適用於 PCM1772PWR — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
PCM1772PW
✅ 直接替換聯絡詢價
查看資料表 →PCM1772PWG4
✅ 直接替換📋 參考替代品（不在目錄中）
PCM1772PWR.B
✅ 直接替換📋 參考替代品（不在目錄中）
PCM1772PWR 最大額定值與電氣特性
| Device Type | Stereo audio digital-to-analog converter (DAC) |
| Data Resolution | 24 bit |
| 取樣率 | 50 kHz |
| Digital Interface | I2S-compatible serial interface |
| 介面類型 | 3-wire serial |
| 輸出配置 | 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 |
| 封裝 | 16-pin TSSOP (PW) |
| 安裝類型 | Surface Mount |
PCM1772PWR 16-pin tssop (pw) 腳位配置指南
PCM1772PWR（16-pin tssop (pw) 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： PCM1772PWR.
請參閱 資料表 以查看完整腳位配置。
典型應用
PCM1772PWR 適用於 6 應用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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 PCM1772PWR — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | 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 |
主要差異化特點
- Integrated line-output circuitry simplifies the analog stage (對比Generic discrete-output audio DAC)
- 24-bit conversion with a 98 dB SNR specification (對比Lower-resolution audio DAC)
- Compact 16-pin TSSOP interface and package (對比Parallel-interface DAC with a larger package)
設計說明
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.
合規資訊
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.