TDA8763M/4/C4 - 10-bit 40MSPS Sigma-Delta ADC | NXP
料号： TDA8763M/4/C4 ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.2 | $112.00 |
| 100 | $9.85 | $985.00 |
| 500 | $8.4 | $4,200.00 |
| 1,000 | $7.1 | $7,100.00 |
TDA8763M/4/C4 概述
What is a sigma-delta ADC? A sigma-delta (ΣΔ) ADC is a type of analog-to-digital converter that uses oversampling and noise shaping to achieve high resolution from a relatively coarse quantizer. Unlike successive-approximation (SAR) or flash ADCs that resolve a sample in one conversion step, the sigma-delta ADC trades speed for resolution, averaging many low-bit samples to produce a high-accuracy output. Within the broader converter hierarchy, it sits as a sub-type of Nyquist-rate ADCs, while it excels in applications where bandwidth is moderate and signal-to-noise ratio (SNR) must be high.
Key features of the TDA8763M/4/C4 include a 10-bit resolution, 40 MSPS sampling rate, single analog input channel, internal reference regulator that eliminates an external reference IC, and low-power operation suitable for portable instrumentation. The integrated regulator stabilizes the internal reference voltage against supply variations, improving DC accuracy across temperature. The parallel output bus simplifies digital interface design by removing the need for serialization or external clock-data recovery.
Architecturally, the device combines a sigma-delta modulator with a decimating digital filter and a parallel output register. The internal reference regulator provides a low-drift, low-noise reference voltage, while the input stage accepts single-ended or differential analog signals. The 28-pin SSOP package offers a compact footprint suitable for space-constrained applications.
Typical applications include industrial process control, medical instrumentation, CCD imaging digitizers, video signal processing, and portable test equipment. The combination of 10-bit resolution and 40 MSPS sampling makes the device well-suited to digitizing IF-stage signals, ultrasound return paths, and intermediate-frequency communication channels.
When designing with this device, ensure adequate decoupling on both AVDD and DVDD rails, follow the recommended input common-mode voltage range, and observe the timing requirements on the parallel output bus. The internal reference regulator eliminates the need for an external reference but still requires proper bypass capacitance near the REF pin.
This page synthesizes distributor pricing, drop-in alternatives, application guidance, and design notes not consolidated in the manufacturer datasheet, enabling faster part selection for engineers.
直接替换替代料： TDA8763M/4/C4 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： TDA8763M/4/C4 （相同外形与封装尺寸） ——差异在于 Architecture, Input Type, Number of Channels, Package, Sampling Rate.
快速对比工具——选择替代料号进行并排对比：
TDA8763M/4/C4,112
✅ 直接替换📋 参考替代料（不在目录中）
TDA8763M/4/C4,118
✅ 直接替换📋 参考替代料（不在目录中）
TDA8763AM/3/C4
✅ 直接替换✓ 有现货
$6.5 / 个
查看数据手册 →TDA8763M/4/C4 最大额定值与电气特性
| 分辨率 | 10 bit |
| 采样率 | 40 MSPS |
| Number of Channels | 1 |
| Architecture | Sigma-Delta |
| Input Type | Single-ended |
| Output Interface | Parallel |
| 封装 | 28-pin SSOP |
| 安装类型 | Surface Mount |
| Reference Type | Internal reference regulator |
| Power Consumption | Low-power (per datasheet title) |
| Terminal Form | GULL WING |
| Terminal Count | 28 |
| Package Code | SSOP |
| Package Shape | RECTANGULAR |
| Temperature Grade | INDUSTRIAL |
TDA8763M/4/C4 rectangular 引脚配置指南
TDA8763M/4/C4（rectangular 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： TDA8763M/4/C4.
请参阅 数据手册 以查看完整引脚配置。
典型应用
TDA8763M/4/C4 适用于 6 应用s: Industrial Process Control Data Acquisition, Medical Instrumentation Signal Chain, CCD Imaging Digitizers, Intermediate Frequency (IF) Digitization, Portable Test and Measurement Equipment, Video Signal Processing Front-Ends.
Industrial Process Control Data Acquisition
The TDA8763M/4/C4 suits industrial process-control digitizers that require 10-bit resolution at moderate bandwidths. Its 40 MSPS sigma-delta architecture oversamples the transducer signal, allowing an external simple anti-aliasing filter while the integrated decimator produces a clean in-band digital word. The internal reference regulator stabilizes DC accuracy against supply drift on factory-floor rails. Place the ADC after instrumentation amplifiers and add 100 nF + 10 uF decoupling on AVDD and DVDD. Trade-off: sigma-delta latency is higher than SAR, so it is best for continuous monitoring rather than closed-loop control loops.
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Medical Instrumentation Signal Chain
In medical instrumentation front-ends such as ultrasound receivers and patient-monitoring digitizers, the TDA8763M/4/C4's 10-bit resolution and 40 MSPS oversampling deliver sufficient dynamic range for demodulated biosignals. The sigma-delta modulator's noise-shaping pushes quantization noise out of the signal band, improving SNR where small analog amplitudes matter. The integrated reference regulator reduces BOM count, valuable for cost-sensitive single-use medical devices. Designers should still characterize leakage and PSRR across the medical EMC environment, and add ferrite beads on supply lines. Compared with SAR ADCs, this part favors bandwidth over absolute conversion latency.
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CCD Imaging Digitizers
The TDA8763M/4/C4 can digitize CCD video output streams in imaging subsystems where 10-bit intensity resolution at moderate pixel rates is acceptable. Its parallel 10-bit output bus simplifies connection to a frame-grabber FPGA or ASIC, and the 40 MSPS sampling rate supports standard VGA-class video bandwidths. The internal reference regulator eases thermal drift concerns in long-exposure applications. Place the ADC close to the CCD analog output to minimize trace capacitance, and use ground guarding on the parallel digital output side. Modern CMOS image sensors typically integrate ADCs, so this use case applies to legacy CCD modules.
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Intermediate Frequency (IF) Digitization
Communications IF stages benefit from the TDA8763M/4/C4's combination of 40 MSPS sampling and sigma-delta noise shaping. Oversampling the IF signal by a wide margin allows digital downconversion and filtering in software or FPGA fabric, eliminating multiple analog mixer stages. The 10-bit resolution is sufficient for demodulating narrow-band signals with moderate SNR requirements, including AM/FM audio recovery and digital-modulation pre-processing. Ensure the analog input common-mode voltage is within the device's specified range and that the clock jitter remains below the sigma-delta modulator's tolerance for in-band SNR.
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Portable Test and Measurement Equipment
Handheld oscilloscopes, spectrum analyzers, and field-test instruments leverage the TDA8763M/4/C4's low-power 10-bit conversion and integrated reference for compact, battery-friendly designs. The 28-SSOP package fits small PCBs, while the parallel output allows direct capture by an FPGA or microcontroller DMA channel. The internal reference regulator removes one external component, helping extend battery life and reducing warm-up drift. Trade-off: 10 bits limits dynamic range versus 12/14-bit modern alternatives, so engineers targeting higher SNR should evaluate current-generation SAR ADCs for new portable designs.
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Video Signal Processing Front-Ends
The TDA8763M/4/C4 fits legacy video front-ends that require 10-bit pixel or component-video digitization at up to 40 MSPS. The parallel output bus reduces glue logic between the ADC and a video processor or frame buffer. The sigma-delta architecture provides inherent anti-aliasing through oversampling, simplifying the analog input filter. Designers should still add line-driver buffering ahead of the ADC input and maintain controlled-impedance routing for the parallel output to limit crosstalk. Modern HDMI/DVI digitizers typically use dedicated video ADCs, but this part remains relevant for industrial and broadcast video output.
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推荐产品汇总
工程参考数据： TDA8763M/4/C4 ——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 | TDA8763M/4/C4,112 | TDA8763M/4/C4,118 | TDA8763AM/3/C4 |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Architecture | Sigma-Delta | Sigma-Delta | Sigma-Delta | Sigma-Delta (same family) |
| Number of Channels | 1 | 1 | 1 | 1 (same family) |
| Output Interface | Parallel | Parallel | Parallel | Parallel (same family) |
| Reference Type | Internal regulator | Internal regulator | Internal regulator | Internal regulator (same family) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete (family) |
| Temperature Grade | Industrial | Industrial | Industrial | Industrial (family) |
关键差异点
- Integrated internal reference regulator eliminates external reference IC （对比 TDA8763AM/3/C4)
- Higher 40 MSPS sampling rate versus typical 10-bit SAR ADCs at 20 MSPS （对比 ADS8319 (TI))
- Parallel 10-bit output simplifies digital interface （对比 AD9201 (ADI))
设计说明
The TDA8763M/4/C4 requires separate analog (AVDD) and digital (DVDD) supply rails. Place a 10 uF bulk capacitor and a 100 nF ceramic decoupling capacitor as close as possible to each supply pin. Use a ferrite bead or small inductor between AVDD and DVDD to isolate digital switching noise from the analog reference. Power-rail sequencing is recommended so that AVDD rises before DVDD to avoid latch-up at startup.
Route the parallel 10-bit digital output bus with matched trace lengths and a continuous ground plane underneath. Add series damping resistors (22-33 ohm) near the ADC output pins to limit edge rates and reduce crosstalk into the analog input. Keep the analog input trace short and guarded with ground pours on both sides to minimize coupling from the parallel digital bus.
Do not exceed the analog input common-mode voltage range or apply signals before power-up. Ensure the sample clock source has low jitter (<50 ps RMS) to preserve in-band SNR of the sigma-delta modulator. The internal reference regulator still requires a low-ESR bypass capacitor at the REF pin - omitting it degrades DC accuracy and increases low-frequency noise.
合规信息
Compliance status not present in the Verified Web Data. The part was released in 1999 (IC02 datasheet revision) before modern RoHS/REACH certifications were standard; consult NXP for current compliance statements.