PCM1719E - 18-Bit Stereo Audio DAC | Texas Instruments
料号： PCM1719E ✓ 量产中PCM1719E 概述
A digital-to-analog converter, or DAC, converts digital audio samples into an analog voltage suitable for headphone, line-level, or downstream audio amplification. In the product hierarchy, the PCM1719E is a stereo audio DAC, which is an ADC/DAC interface IC and therefore part of the broader signal-conversion and semiconductor family. The integrated headphone output makes the device useful where a board requires an audio output stage without a separate analog-output amplifier.
Key features include 18-bit input-data acceptance, complete stereo conversion, an 8-times oversampling digital filter, and a multi-level delta-sigma conversion architecture. The analog low-pass filter removes high-frequency content generated by the oversampling process before the signal reaches the output stage. The specified -88 dB THD+N and 100 dB SNR characterize the converter's distortion and noise performance, while the 96 dB dynamic-range figure indicates the span between specified minimum and maximum signal levels.
The PCM1719E uses a 5 V supply according to the verified component data. Its digital audio connection is I2S, and the listed 48 kHz operating rate identifies the supported sampling configuration shown in the distributor listing. The 28-SSOP package has a stated width of 5.30 mm and a lead pitch of 0.209 inches. The package therefore belongs to the SSOP surface-mount family, although the verified source does not provide a complete verified pin list.
Typical uses include digital-audio source boards, multimedia equipment, headphone outputs, compact consumer audio systems, and embedded audio products requiring a stereo I2S-to-analog conversion stage. An application should account for the converter's 5 V supply requirement, provide clean digital and analog supply routing, and use suitable output coupling and amplifier-interface components.
The principal design consideration is separating analog and digital return paths to minimize converter noise while keeping the SSOP layout compact. Decoupling capacitors should be placed near the supply pins, and analog output routing should remain away from high-current digital return paths. The PCM1719E is appropriate when its documented I2S interface, 48 kHz format, 5 V supply, converter performance, and integrated headphone capability match the system.
This product record combines the verified distributor specifications, package information, source links, interface details, and application guidance. It also distinguishes the PCM1719E from devices with similar functions but different timing, supply, or package requirements, helping engineers avoid substitutions that are not true pin-to-pin replacements.
直接替换替代料： PCM1719E ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
该产品暂无直接替换替代料。
请求替代料PCM1719E 最大额定值与电气特性
| Product Type | Stereo audio digital-to-analog converter |
| Input Data Resolution | 18 bit |
| Audio Interface | I2S |
| Supported Sampling Rate | 48 kHz |
| Channel Count | 2 channels |
| Digital Filter Oversampling | 8-times |
| DAC Architecture | Multi-level delta-sigma |
| Analog Filter | Integrated analog low-pass filter |
| Headphone Amplifier | Integrated on-chip headphone amplifier |
| Total Harmonic Distortion Plus Noise | -88 dB |
| Dynamic Range | 96 dB |
| Signal-to-Noise Ratio | 100 dB |
| 电源电压 | 5 V |
| Package Type | 28-pin SSOP |
| Package Width | 5.30 mm |
| Package Lead Pitch | 0.209 inch |
| 安装类型 | Surface mount |
PCM1719E 0.209 inch 引脚配置指南
PCM1719E（0.209 inch 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： PCM1719E.
请参阅 数据手册 以查看完整引脚配置。
典型应用
PCM1719E 适用于 6 应用s: Compact Headphone Audio Output, Multimedia Digital Audio Source, Stereo Line-Level Audio Conversion, Digital Audio Player Module, Digital Recording and Playback System, Industrial Audio Control Panel.
Compact Headphone Audio Output
The PCM1719E fits compact headphone-output designs because it combines a stereo DAC, analog low-pass filter, and on-chip headphone amplifier in one 28-SSOP package. Its verified 18-bit input capability, 48 kHz I2S format, 100 dB SNR, and -88 dB THD+N provide a defined conversion path from digital audio samples to an analog output. In implementation, the host controller supplies I2S clock and data while the converter operates from 5 V. The principal design trade-off is the relatively wide SSOP footprint and the need to observe the manufacturer's output-loading and decoupling guidance. The integrated headphone stage can reduce the number of external analog blocks, but it does not eliminate careful grounding, output coupling, and EMI-control practices.
推荐
Multimedia Digital Audio Source
PCM1719E is appropriate for multimedia boards that receive 48 kHz stereo audio through an I2S port and need an analog output. The converter accepts 18-bit input data, applies 8-times digital oversampling, and includes a multi-level delta-sigma DAC followed by an analog low-pass filter. Its specified 96 dB dynamic range and 100 dB SNR give engineers defined targets for signal-chain comparison with other source boards. The converter is placed between the digital audio controller and analog output circuitry, with separate routing recommended for clock, data, and analog return currents. Compared with a discrete output chain, the integrated solution shortens the analog path and reduces assembly complexity, while the 5 V supply requirement remains an important system-level consideration.
推荐
Stereo Line-Level Audio Conversion
The PCM1719E can serve as the stereo I2S-to-analog converter in a line-level audio source when the next stage accepts the converter's analog output. At 48 kHz, it provides 18-bit input handling, 8-times oversampling, and an integrated analog low-pass filter intended to suppress out-of-band content created by digital interpolation. The verified -88 dB THD+N and 100 dB SNR specifications make it suitable for comparison against other multimedia DAC options. A practical implementation should place supply bypass capacitors near the relevant pins and keep analog traces away from switching-node and digital-clock return paths. The tradeoff is that the PCM1719E is not a switching converter, so efficiency and board area depend on the surrounding 5 V power architecture and analog output stage.
推荐
Digital Audio Player Module
PCM1719E can form the conversion and headphone-output section of a digital audio player module driven by a USB-capable or embedded audio controller. Its I2S interface and verified 48 kHz operating point simplify connection to digital audio sources, while the integrated headphone amplifier avoids a separate output buffer in space-constrained designs. The 28-SSOP package requires two mounting sides, however, so it is less compact than a leadless DAC package. Engineering teams should evaluate whether 100 dB SNR and -88 dB THD+N satisfy the product's listening specification, then reserve copper and ground space for clean supply distribution. The verified 5 V operating supply must be coordinated with the source and any downstream analog amplifier to prevent noise coupling between digital and audio domains.
推荐
Digital Recording and Playback System
The PCM1719E can provide the playback side of a digital recording system in which encoded audio is decoded into 48 kHz I2S samples and converted to an analog monitor signal. Its integrated headphone amplifier supports direct monitoring by a headset, while the 18-bit input path, 96 dB dynamic range, and 100 dB SNR provide specified playback performance. The converter still requires a separate capture path when recording is needed; it does not replace an audio ADC. System integration should therefore pair playback and capture functions without sharing high-current return paths unnecessarily. This separation helps preserve the PCM1719E's specified SNR and distortion performance while the 5 V analog supply remains stable during headphone startup and volume changes.
推荐
Industrial Audio Control Panel
PCM1719E is suitable for an industrial audio panel that requires a standardized 48 kHz I2S interface and local headphone monitoring. The 5 V supply, 28-SSOP package, integrated analog filtering, and built-in headphone amplifier support a compact implementation, while the specified 18-bit data handling provides adequate resolution for voice prompts, confirmation tones, and operational audio. Designers should isolate the converter's analog return from noisy relay, display, and motor-control currents to avoid reducing the available 100 dB SNR. Environmental qualification, EMC limits, and temperature range were not established by the verified sources, so they must be checked against the manufacturer's datasheet and the final industrial enclosure requirements before deployment.
推荐
推荐产品汇总
工程参考数据： PCM1719E ——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 |
|---|---|
| Product Type | Stereo audio digital-to-analog converter |
| Input Data Resolution | 18 bit |
| Digital Audio Interface | I2S |
| Supported Sampling Rate | 48 kHz |
| Output Configuration | Stereo with integrated headphone amplifier |
| Total Harmonic Distortion Plus Noise | -88 dB |
| Dynamic Range | 96 dB |
| Signal-to-Noise Ratio | 100 dB |
| Supply Voltage | 5 V |
| Package | 28-pin SSOP, 5.30 mm width, 0.209 inch lead pitch |
| Brand | Texas Instruments |
关键差异点
- Integrated conversion and headphone-output capability （对比 PCM1739C)
- Documented 48 kHz I2S configuration （对比 PCM2704DB)
- Quantified converter performance （对比 PCM1739C)
设计说明
Place the required supply bypass capacitors immediately adjacent to the PCM1719E supply and ground pins, and route the sensitive analog output paths away from digital clock and data return currents. The verified data identifies a 5 V supply and an integrated analog low-pass filter, but it does not provide the complete recommended capacitor values. Apply the values and grounding topology shown in the manufacturer datasheet rather than substituting generic bulk capacitance without checking the required loop area.
Keep the 28-SSOP footprint on the PCB with unobstructed access to all perimeter leads and provide adequate clearance beneath the package for soldering and inspection. Because no verified numbered pinout or exposed-pad connection was supplied, the layout should be checked directly against the manufacturer package drawing. In particular, confirm whether any thermal or ground connection exists beyond the numbered perimeter pins before defining copper pours, isolation gaps, and the analog return path.
Do not substitute PCM1739C or PCM2704DB solely because each is an audio converter; the verified comparison identifies timing, supply-voltage, and register-mapping differences for PCM1739C, while equivalent pin and electrical compatibility is not established for PCM2704DB. Likewise, verify the PCM1719E/2K ordering suffix and packing details before treating it as a production replacement. A board-level substitution requires matching interface timing, supply rails, control behavior, analog output loading, and package geometry.
The I2S clock, data, and latch signals can contain high-frequency content even though their nominal audio rate is 48 kHz. Route these signals over a continuous reference plane and keep their return current out of the analog-output region. Use a compact analog ground strategy around the converter, avoid placing the SSOP directly beneath a switching node or high-current regulator return, and validate conducted and radiated emissions at the assembled-product level because the supplied data does not include a finished-board EMC certification.
The PCM1719E requires a 5 V supply according to the verified comparison data. Supply the converter from a low-noise rail with adequate transient response, and keep analog and digital bypass arrangements consistent with the manufacturer reference circuit. Headphone startup, volume changes, and simultaneous channel loading can create dynamic demand, so the selected regulator and capacitors should be checked against actual board conditions. Quiescent current and maximum power dissipation were not provided and therefore must be obtained from the manufacturer datasheet before thermal sizing.
合规信息
The verified web results do not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements. These fields therefore remain unknown rather than being inferred from the manufacturer name or package.