PCM1740E - 24-Bit 96kHz Stereo DAC with PLL | Texas Instruments
MPN: PCM1740E ✓ Hoạt độngPCM1740E Tóm tắt
An audio DAC is a signal-conversion integrated circuit that transforms digital PCM audio samples into left and right analog voltage signals for subsequent low-pass filtering and line-level amplification. Within the product hierarchy, PCM1740E is an audio DAC, a digital-to-analog converter, a data converter IC, and a semiconductor designed for digital audio playback.
The PCM1740E combines a multibit delta-sigma stereo DAC with an integrated PLL and VCXO. Its 24-bit interface supports sampling rates up to 96 kHz, while the VCXO supplies a precision-tunable 27 MHz clock source. Integrating these functions reduces the need for a separate clock-generation circuit in systems where the DAC must support multiple audio-sampling frequencies.
The converter is intended for consumer audio equipment, particularly set-top boxes and similar digital playback products. Digital input is accepted through a serial audio interface, and the converter generates stereo analog outputs suitable for an analog reconstruction filter and line-output stage. Its architecture prioritizes integration, clock control, and compact implementation rather than a separately adjustable analog output architecture.
Typical uses include cable or satellite set-top boxes, digital audio playback modules, stereo audio source equipment, and embedded consumer systems accepting I2S data. In these systems, the integrated PLL can support sampling-rate adaptation while the VCXO provides the specified clock foundation for stable digital-to-analog conversion.
Designers should follow the manufacturer's recommended input, output, clock, filtering, decoupling, and layout arrangements. The complete 24-pin pinout and detailed electrical limits are not present in the supplied search extracts, so this page does not infer pin assignments or unverified analog-output values. Confirm the latest manufacturer datasheet before final routing and impedance selection.
This page consolidates manufacturer descriptions, distributor availability, package information, and verified cross-reference results. It also distinguishes confirmed drop-in candidates from broader functional equivalents so engineers can make sourcing and PCB-compatibility decisions without treating similar audio converters as automatically interchangeable.
Bộ thay thế dễ dàng lắp đặt cho PCM1740E — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
PCM1740EG4
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PCM1740E Tỷ lệ tối đa & tính chất điện
| Product Type | Stereo audio digital-to-analog converter |
| Độ phân giải | 24 bit |
| Maximum Sampling Rate | 96 kHz |
| Digital Audio Interface | I2S |
| Number of Channels | 2 channels |
| Converter Architecture | Multibit delta-sigma |
| Integrated Clock Features | On-chip PLL and VCXO |
| Master Clock Frequency | 27 MHz |
| Hộp | 24-pin SSOP |
| Kiểu lắp đặt | Surface mount |
Hướng dẫn cấu hình chân PCM1740E 24-pin ssop
Cấu hình chân cho PCM1740E (24-pin ssop 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 PCM1740E.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
PCM1740E phù hợp cho 6 Áp dụngs: Set-Top Box Audio Playback, Digital Audio Source Equipment, Cable and Satellite Receiver, I2S Digital Audio Interface, Multi-Rate Audio Playback Module, Stereo Line-Output Stage.
Set-Top Box Audio Playback
The PCM1740E fits set-top box playback because it combines a 24-bit stereo DAC, I2S input, operation up to 96 kHz, an integrated PLL, and a VCXO based on a precision 27 MHz master clock. Integrating the clock functions reduces the complexity of supporting multiple digital-audio sampling rates in a compact consumer enclosure. The converter produces differential-capable or single-ended analog signals according to the manufacturer configuration, after which the system uses a reconstruction filter and line-output amplifier. The primary design consideration is preserving clock and analog-signal integrity: route the digital interface away from sensitive output stages and follow the manufacturer’s recommended component values and grounding arrangement.
Được đề xuất
Digital Audio Source Equipment
PCM1740E is suitable for digital audio source equipment that receives 24-bit I2S streams and needs high-quality stereo conversion at rates as high as 96 kHz. The multibit delta-sigma architecture provides the required digital-to-analog conversion function, while the integrated PLL and VCXO simplify clock management when multiple sampling rates must be supported. In a source product, the PCM1740E can sit between an audio processor and an analog line-output stage. Board implementation should maintain a continuous return path under the converter, place bypass capacitors close to the supply pins, and isolate high-current amplifier paths from the converter’s analog outputs to reduce ground-induced distortion.
Được đề xuất
Cable and Satellite Receiver
The PCM1740E is explicitly targeted at set-top box audio playback, including cable and satellite receiver implementations with digital audio decoding. Its 24-bit stereo conversion, 96 kHz maximum sampling rate, and integrated clock circuitry align with systems that process multiple standard audio rates while maintaining a compact component count. A receiver implementation can feed I2S data from a demultiplexer into the PCM1740E, then route the analog outputs through a passive reconstruction filter and amplifier stage. Clock jitter, grounding, and analog-filter selection remain critical; use the current Texas Instruments reference circuit and layout guidance rather than substituting generic filter values.
Được đề xuất
I2S Digital Audio Interface
PCM1740E provides a dedicated endpoint for I2S digital audio in embedded consumer systems. The interface converts two digital channels into stereo analog outputs, while the 24-bit resolution and 96 kHz capability accommodate high-quality playback streams. When integrating it into an embedded design, define the audio master-clock source carefully because the converter also includes programmable clock functions and a 27 MHz VCXO arrangement. Match logic levels, input timing, and output filtering to the current manufacturer requirements. This application is especially useful where an external audio DAC and separate clock generator would increase board area or complicate firmware-managed sample-rate conversion.
Được đề xuất
Multi-Rate Audio Playback Module
The integrated PLL and VCXO make PCM1740E relevant to multi-rate audio playback modules that accept content at several sampling frequencies. The 96 kHz maximum rate and 27 MHz master-clock arrangement provide a clocking foundation for set-top and source products, while the 24-pin SSOP package supports compact assembly. Implement the module with separate digital and analog power-return paths, use short clock routes, and avoid placing switching regulators and inductors directly beneath the analog output path. Validate every supported sample rate against the current datasheet, including lock, jitter, and startup behavior.
Được đề xuất
Stereo Line-Output Stage
PCM1740E can form the digital-to-analog front end of a stereo line-output stage in consumer audio equipment. Its two-channel 24-bit DAC architecture accepts an I2S stream and supports sampling rates up to 96 kHz, allowing the downstream filter and amplifier to produce the final analog output. The converter should be followed by the manufacturer-recommended reconstruction network, with care taken to minimize distortion and maintain proper source impedance. Keep analog output traces short, provide a quiet analog ground reference, and keep switching-converter current loops away from the DAC outputs. The exact output topology, voltage range, and filter component selection must be confirmed from the current manufacturer documentation.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PCM1740E — 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 | PCM1740EG4 |
|---|---|---|
| Package | 24-pin SSOP | 24-pin SSOP |
| Brand | Texas Instruments | Texas Instruments |
| Resolution | 24 bit | 24 bit |
| Maximum Sampling Rate | 96 kHz | 96 kHz |
| Channel Count | 2 channels | 2 channels |
| Lifecycle Status | Active | Active |
Bảo phân biệt quan trọng
- Integrated precision clock subsystem (vsPCM1740EG4)
- High-quality stereo conversion specification (vsPCM1740EG4)
- Targeted set-top-box integration (vsPCM1740EG4)
Ghi chú thiết kế
Keep the PCM1740E digital interface and master-clock routing compact and away from analog output traces. Provide a continuous ground reference beneath the converter, avoid splitting analog and digital return paths unless the manufacturer reference design explicitly requires it, and place bypass capacitors at the associated supply pins. The supplied evidence confirms I2S, PLL, VCXO, and 27 MHz clock support but does not provide the complete pin map, so pin-specific placement must be checked against the current Texas Instruments datasheet.
Preserve the timing relationship between the I2S data, word-select, bit clock, and master clock entering the PCM1740E. Maintain the manufacturer-recommended clock topology and avoid introducing long stubs or unnecessary test-point discontinuities on clock nets. Because the exact SCK, LRCK, and MCKI requirements are absent from the supplied extracts, validate the complete supported sampling-rate matrix against the manufacturer datasheet and verify clock lock and jitter on the final PCB.
Do not treat a similar stereo DAC as a drop-in replacement solely because it uses a 24-pin SSOP package. Confirm every numbered pin, supply level, I2S timing definition, master-clock requirement, analog-output topology, filter recommendation, and active lifecycle state. PCM1740EG4 is the only directly supported candidate in the supplied comparison evidence, while PCM1740E/2K and other packaging or ordering variants were not listed as distinct engineering alternatives.
Thông tin tuân thủ
The supplied PCM1740E product and distributor extracts do not explicitly provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. Status remains unknown rather than inferred.