PCM1792DB - 24-Bit 192kHz Stereo DAC | Texas Instruments
MPN: PCM1792DB ✓ Hoạt độngPCM1792DB Tóm tắt
An audio DAC converts digital PCM or DSD data into analog voltage or current signals suitable for amplification and loudspeaker drive. Within the signal chain, it sits between a digital audio source and an analog output stage. The PCM1792DB combines two converter channels and associated support circuitry in one monolithic CMOS device, simplifying stereo audio designs while preserving independent balanced outputs.
The PCM1792DB provides a dynamic range of 132 dB for mono operation at 9 Vrms and 129 dB for stereo operation at 4.5 Vrms. Its THD+N is 0.0004%, and its differential current output reaches 7.8 mA peak-to-peak. These characteristics make the converter appropriate for premium digital audio equipment, professional monitoring, USB and network audio products, and other systems where low-level analog distortion can affect sound quality.
Advanced segment DAC architecture is the core technical feature of this converter. According to the manufacturer datasheet, the architecture improves dynamic performance and tolerance to clock jitter. The device uses an 8-times oversampling digital filter, balanced current outputs that allow output topology optimization, and a serial control interface for mode configuration. These functions support integration into designs requiring both PCM playback and Direct Stream Digital operation.
Typical applications include high-resolution stereo DAC equipment, professional audio monitors, digital mixing consoles, USB audio interfaces, and home-theater signal processing. The differential outputs are particularly useful when the downstream amplifier or current-voltage conversion stage can preserve the benefits of balanced operation. System designers must account for the required analog supplies, output load, external conversion network, and clocking arrangement when laying out the PCB.
A critical implementation consideration is maintaining clean, low-noise analog and digital supply rails. Place the bypass capacitors specified by the manufacturer close to their corresponding power pins, route high-current outputs away from sensitive digital and analog inputs, and use a symmetric ground strategy around the converter outputs. The 28-lead SSOP footprint also requires careful soldering practices because its lead pitch is relatively narrow.
This page consolidates the PCM1792DB electrical characteristics, package details, application guidance, and replacement considerations into an engineering-focused reference. It also distinguishes true drop-in interchangeability from related converters and identifies the design variables that most often determine success in a high-performance audio DAC implementation.
Bộ thay thế dễ dàng lắp đặt cho PCM1792DB — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Không có bộ thay thế dễ dàng lắp đặt sẵn có cho sản phẩm này.
Yêu cầu các bộ thay thếPCM1792DB Tỷ lệ tối đa & tính chất điện
| Converter Type | Stereo audio digital-to-analog converter |
| Architecture | Advanced segment DAC |
| Độ phân giải | 24 bit |
| Maximum PCM Sampling Rate | 192 kHz |
| Maximum DSD Sampling Rate | 200 kHz |
| Dynamic Range, Mono | 132 dB at 9 Vrms |
| Dynamic Range, Stereo | 129 dB at 4.5 Vrms |
| Dynamic Range, Stereo at 2 Vrms | 127 dB |
| THD+N | 0.0004% |
| Differential Output Current | 7.8 mA peak-to-peak |
| Cấu hình đầu ra | 2 channels, balanced differential current outputs |
| Digital Filter Oversampling Ratio | 8x |
| Digital Interface | PCM and DSD serial audio data |
| Control Interface | Serial control interface |
| Process Technology | CMOS |
| Hộp | 28-lead SSOP, 0.209 in (5.30 mm) width |
| Kiểu lắp đặt | Surface mount |
Hướng dẫn cấu hình chân PCM1792DB 28-lead ssop, 0.209 in (5.30 mm) width
Cấu hình chân cho PCM1792DB (28-lead ssop, 0.209 in (5.30 mm) width 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 PCM1792DB.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
PCM1792DB phù hợp cho 6 Áp dụngs: High-Resolution Stereo DAC, Professional Audio Monitor Controller, USB and Network Audio Interface, Digital Mixing Console Output Stage, Home-Theater Audio Processor, Digital Audio Instrumentation.
High-Resolution Stereo DAC
The PCM1792DB fits a high-resolution stereo DAC because it combines 24-bit conversion, operation up to 192 kHz PCM, and 200 kHz DSD support in one converter. Its advanced segment DAC architecture provides 129 dB dynamic range at 4.5 Vrms with 0.0004% THD+N. The two balanced differential current outputs support direct coupling to an external current-to-voltage stage, although the complete output network and load must match the converter’s operating conditions.
Được đề xuất
Professional Audio Monitor Controller
The PCM1792DB is suitable for the digital-to-analog stage of a professional monitor controller because its balanced differential outputs reduce sensitivity to noise coupled between signal and return paths. The converter supports 192 kHz PCM and 200 kHz DSD while maintaining 132 dB dynamic range for mono operation at 9 Vrms. The design should preserve the symmetry of each output channel, use clean analog supplies, and keep output traces away from digital clock and serial-data lines.
Được đề xuất
USB and Network Audio Interface
PCM1792DB can serve as the premium analog output stage of a USB or network audio interface when the system supports 24-bit PCM and DSD streams. Its 192 kHz PCM ceiling, 200 kHz DSD operation, and 0.0004% THD+N preserve low-distortion conversion from the digital source to the analog domain. Clock and data routing must be designed to avoid jitter and timing errors, while separate analog and digital supply regions reduce converter performance degradation.
Được đề xuất
Digital Mixing Console Output Stage
The PCM1792DB is appropriate for the final stereo output conversion stage of a digital mixing console where balanced analog outputs and high dynamic range are required. Its dual differential current outputs support a balanced topology, while the 129 dB stereo dynamic range at 4.5 Vrms provides headroom for demanding program material. Correct implementation requires channel-matching output networks, low-noise supplies, careful grounding, and validation across mixer gain and mute-state transitions.
Được đề xuất
Home-Theater Audio Processor
PCM1792DB can provide the stereo reference output of a home-theater processor when the product is intended to support high-resolution PCM and DSD sources. The 24-bit converter, 200 kHz DSD capability, and 7.8 mA peak-to-peak differential outputs support a clean conversion stage followed by a receiver or power amplifier. System integration must account for output muting, sampling-rate changes, clock-domain transitions, and the potential audible effect of thermal or supply noise.
Được đề xuất
Digital Audio Instrumentation
PCM1792DB fits precision digital audio instrumentation that converts test or playback data into balanced analog signals for measurement and analysis. Its 0.0004% THD+N and 127 dB stereo dynamic range at 2 Vrms provide a low-distortion reference output, while DSD support expands the supported source formats. Instrumentation designs should characterize the complete output path, including the external current-to-voltage conversion, because system noise and imbalance can exceed the converter’s own specifications.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PCM1792DB — 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 |
|---|---|
| Package | 28-lead SSOP |
| Brand | Texas Instruments |
| Converter Type | Stereo audio DAC |
| Architecture | Advanced segment DAC |
| Resolution | 24 bit |
| Maximum PCM Sampling Rate | 192 kHz |
| Maximum DSD Sampling Rate | 200 kHz |
| Dynamic Range, Stereo | 129 dB at 4.5 Vrms |
| THD+N | 0.0004% |
| Output Configuration | Balanced differential current outputs |
| Output Current | 7.8 mA peak-to-peak |
Bảo phân biệt quan trọng
- Supports both high-resolution PCM and DSD playback (vsPCM1725DR)
- Provides balanced differential current outputs (vsPCM1725DR)
- Low-distortion stereo conversion (vsDSD1794A)
Ghi chú thiết kế
Separate the digital and analog supply regions and place the manufacturer-recommended bypass capacitors directly beside their associated PCM1792DB pins. Route digital clock, control, and serial-audio traces away from the differential output and current-to-voltage conversion networks. Keep the two stereo channels geometrically similar so that routing asymmetry does not introduce channel-to-channel timing or attenuation differences.
Use short, symmetrical connections from the PCM1792DB differential current outputs to the external current-to-voltage network, and observe the specified output load. Do not add long prototype wires or test leads between the converter and output stage because their inductance and capacitance can alter the frequency response. Evaluate channel balance, THD+N, and dynamic range across the intended gain settings rather than checking only a single output voltage.
Create separate analog and digital supply paths, each with local high-frequency decoupling, and connect them to the converter according to the manufacturer pin descriptions. Confirm the permitted voltage and ground arrangement for every audio mode, including DSD and serial-control operation. Any analog voltage regulator should have sufficient noise performance and transient response to avoid modulation of the 7.8 mA peak-to-peak differential output current.
Thông tin tuân thủ
The manufacturer product page and datasheet do not state the compliance fields in the accessible content. Confirm RoHS, REACH, lead-free, halogen-free, and conflict-minerals status with the manufacturer before release to regulated markets.
