TDA8763M/4/C4 - 10-bit 40MSPS Sigma-Delta ADC | NXP
MPN: TDA8763M/4/C4 ✗ Cuối đờiTDA8763M/4/C4 Tóm tắt
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.
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Bộ thay thế dễ dàng lắp đặt cho TDA8763M/4/C4 — 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 TDA8763M/4/C4 (cùng hình factor và footprint) — khác nhau ở Architecture, Input Type, Number of Channels, Package, Sampling Rate.
TDA8763M/4/C4,112
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TDA8763M/4/C4,118
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TDA8763AM/3/C4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →TDA8763M/4/C4 Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 10 bit |
| Tỷ lệ lấy mẫu | 40 MSPS |
| Number of Channels | 1 |
| Architecture | Sigma-Delta |
| Input Type | Single-ended |
| Output Interface | Parallel |
| Hộp | 28-pin SSOP |
| Kiểu lắp đặt | 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 |
Hướng dẫn cấu hình chân TDA8763M/4/C4 rectangular
Cấu hình chân cho TDA8763M/4/C4 (rectangular 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 TDA8763M/4/C4.
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Ứng dụng tiêu biểu
TDA8763M/4/C4 phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho TDA8763M/4/C4 — 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 | 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) |
Bảo phân biệt quan trọng
- Integrated internal reference regulator eliminates external reference IC (vsTDA8763AM/3/C4)
- Higher 40 MSPS sampling rate versus typical 10-bit SAR ADCs at 20 MSPS (vsADS8319 (TI))
- Parallel 10-bit output simplifies digital interface (vsAD9201 (ADI))
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.