PCM1772PWR - 24-Bit Stereo DAC with Line Output | Texas Instruments
MPN: PCM1772PWR ✓ Hoạt độngPCM1772PWR Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho PCM1772PWR — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PCM1772PWR (cùng hình factor và footprint).
PCM1772PW
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PCM1772PWG4
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PCM1772PWR.B
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PCM1772PWR Tỷ lệ tối đa & tính chất điện
| Device Type | Stereo audio digital-to-analog converter (DAC) |
| Data Resolution | 24 bit |
| Tỷ lệ lấy mẫu | 50 kHz |
| Digital Interface | I2S-compatible serial interface |
| Loại giao diện | 3-wire serial |
| Cấu hình đầu ra | 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 |
| Hộp | 16-pin TSSOP (PW) |
| Kiểu lắp đặt | Surface Mount |
Hướng dẫn cấu hình chân PCM1772PWR 16-pin tssop (pw)
Cấu hình chân cho PCM1772PWR (16-pin tssop (pw) gói). Thành phần số hiệu này có chân đầu vào, đầu ra và nguồn cung cấp. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết cấu hình chân bù, bù trừ và chân kích hoạt. Hoàn hảo cho điều kiện tín hiệu và mạch khuếch đại.
Không có dữ liệu chân cụ thể sẵn có cho PCM1772PWR.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
PCM1772PWR phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PCM1772PWR — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Integrated line-output circuitry simplifies the analog stage (vsGeneric discrete-output audio DAC)
- 24-bit conversion with a 98 dB SNR specification (vsLower-resolution audio DAC)
- Compact 16-pin TSSOP interface and package (vsParallel-interface DAC with a larger package)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.