AD676KD - 16-Bit 100 kSPS Parallel ADC | Analog Devices
MPN： AD676KD ✗ 停產AD676KD 概覽
直接替換替代品，適用於 AD676KD — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： AD676KD （相同外形與佔位） — 差異在於 Package, Architecture, Autocalibration, Conversion Time, Input Type.
AD676JD
✅ 直接替換聯絡詢價
查看資料表 →AD676KDZ
✅ 直接替換📋 參考替代品（不在目錄中）
AD676TD/883B
✅ 直接替換聯絡詢價
查看資料表 →AD676KD 最大額定值與電氣特性
| Device Type | 16-bit parallel-output analog-to-digital converter |
| Converter Architecture | Switched-capacitor charge-redistribution SAR |
| 解析度 | 16 bit |
| Number of Analog Inputs | 1 input |
| Conversion Rate | 100 kSPS |
| Total Conversion Time | 10 microseconds |
| Output Format | Parallel output |
| On-Chip Sample-and-Hold | Yes |
| Autocalibration | On-chip autocalibration |
| Missing Codes | No missing codes |
| Integral Nonlinearity | 1 LSB typical |
| Total Harmonic Distortion | 97 dB |
| Signal-to-Noise Plus Distortion | 90 dB |
| Full-Power Bandwidth | 1 MHz |
| 封裝 | 28-pin ceramic DIP (28-CDIP) |
| 安裝類型 | Through-hole |
| Temperature Grade | Commercial |
AD676KD 28-pin ceramic dip (28-cdip) 腳位配置指南
AD676KD（28-pin ceramic dip (28-cdip) 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： AD676KD.
請參閱 資料表 以查看完整腳位配置。
典型應用
AD676KD 適用於 6 應用s: Precision Industrial Process Measurement, Laboratory Instrumentation and Data Acquisition, Audio and Low-Level Signal Conversion, Sensor Signal Acquisition, Power and Control Monitoring, Retrofit and Legacy Measurement Systems.
Precision Industrial Process Measurement
The AD676KD fits industrial process measurement when 16-bit amplitude resolution is needed without moving to a much faster converter. Its 100 kSPS rate and 10 microsecond conversion time provide repeated updates from pressure, temperature, flow, or level sensors, while the specified 1 LSB typical INL supports consistent digital readings. The integrated sample-and-hold captures the conditioned sensor signal, and autocalibration corrects internal nonlinearity. The parallel output requires careful routing of 16 data lines and control signals, while the ceramic DIP package favors stable through-hole laboratory and industrial boards rather than compact handheld products.
推薦
Laboratory Instrumentation and Data Acquisition
The AD676KD is appropriate for laboratory instrumentation that repeatedly samples analog signals and transfers each conversion over a parallel bus. Its 16-bit resolution preserves fine signal detail, while the 100 kSPS throughput supports continuous waveform and measurement acquisition at rates up to the converter's specified limit. The 1 MHz full-power bandwidth provides input-frequency headroom, while the 90 dB SNR and 97 dB THD figures are valuable when characterizing low-level signals. Designers should use clean references, a suitable input driver, and a grounded layout because the AD676KD is a through-hole ceramic-DIP device rather than a compact surface-mount converter.
推薦
Audio and Low-Level Signal Conversion
The AD676KD can be used for high-resolution acquisition of low-level audio or instrumentation signals when parallel output and a 100 kSPS ceiling are acceptable. The converter's 97 dB THD and 90 dB SNR characterize harmonic and noise performance, while its 16-bit output supports substantial numerical headroom for downstream processing. The 1 MHz full-power bandwidth allows the analog input path to cover frequencies beyond the maximum sample rate's Nyquist region under the appropriate anti-aliasing design. Input conditioning, reference stability, and careful grounding remain critical because converter headline resolution alone does not determine end-to-end signal accuracy.
推薦
Sensor Signal Acquisition
The AD676KD is suitable for acquiring sensor outputs that require finer quantization than an 8-bit or 12-bit converter while retaining a straightforward parallel data interface. The 100 kSPS conversion rate accommodates many temperature, pressure, strain-gauge, and chemical-sensor systems, while the on-chip sample-and-hold simplifies acquisition timing. A 16-bit result can reveal small changes that would otherwise be lost in sensor noise or coarse quantization. The application still requires sensor-specific excitation, filtering, input protection, and reference design; the verified excerpts do not provide input capacitance or common-mode limits for final front-end sizing.
推薦
Power and Control Monitoring
The AD676KD can monitor slowly varying or repetitive power-control signals when the system requires 16-bit data and a dedicated parallel acquisition path. Its 100 kSPS rate is more than sufficient for many voltage, current, and position feedback loops, and autocalibration helps maintain consistent conversion results by correcting internal nonlinearity. The parallel bus allows the controller to latch complete words efficiently. Designers should place the converter's digital return current away from sensitive analog input paths and verify reference stability, input range, and supply requirements against the complete manufacturer datasheet before deployment.
推薦
Retrofit and Legacy Measurement Systems
The AD676KD is a practical choice for maintaining or replicating a legacy 28-pin parallel ADC installation. Its 16-bit resolution, 100 kSPS rate, and through-hole ceramic-DIP format are compatible with the physical and electrical style of older measurement systems, while parallel output avoids adding a serial converter to an existing processor interface. The device is better suited to controlled industrial or laboratory equipment than compact portable products. During a repair or board refresh, verify the ceramic package, pinout, temperature grade, supply rails, and reference polarity against the installed equipment because the supplied excerpts do not provide complete pin-level data.
推薦
推薦產品摘要
工程參考資料，適用於 AD676KD — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | AD676JD | AD676KDZ | AD676 |
|---|---|---|---|---|
| Package | 28-CDIP | 28-CDIP | 28-CDIP | 28-CDIP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit |
| Conversion Rate | 100 kSPS | 100 kSPS | 100 kSPS | 100 kSPS |
| Architecture | Switched-capacitor charge-redistribution SAR | Switched-capacitor charge-redistribution SAR | Switched-capacitor charge-redistribution SAR | Switched-capacitor charge-redistribution SAR |
| Output Interface | Parallel output | Parallel output | Parallel output | Parallel output |
| Total Conversion Time | 10 microseconds | 10 microseconds | 10 microseconds | 10 microseconds |
| Integral Nonlinearity | 1 LSB typical | 1 LSB typical | 1 LSB typical | 1 LSB typical |
| Total Harmonic Distortion | 97 dB | 97 dB | 97 dB | 97 dB |
| Signal-to-Noise Plus Distortion | 90 dB | 90 dB | 90 dB | 90 dB |
| Autocalibration | On-chip autocalibration | On-chip autocalibration | On-chip autocalibration | On-chip autocalibration |
主要差異化特點
- Parallel 16-bit acquisition in a 28-pin package (對比AD677)
- 100 kSPS throughput with integrated sample-and-hold (對比AD676KDZ)
- On-chip nonlinear correction (對比AD676JD)
設計說明
Route the 16-bit parallel output as a short, continuous bus into the receiving logic and keep the ADC clock and control traces away from the analog input and reference nets. The ceramic DIP package makes prototype wiring straightforward, but it does not eliminate sensitivity to ground bounce and digital crosstalk. Use a quiet analog ground region, connect it to the system ground at the regulator or converter return point, and avoid sharing narrow copper paths between reference current, digital output current, and input-return current.
Separate analog and digital supply paths where the board architecture permits, and place local high-frequency bypass capacitors directly at the device supply pins. The supplied excerpts do not state the AD676KD supply-voltage tolerances, recommended capacitor values, or permissible sequencing, so those values must come from the manufacturer datasheet rather than generic rules. Verify logic levels against the receiving device and confirm that the reference remains within its specified operating range across temperature and supply variation.
Drive the analog input from a low-source-impedance buffer when the source is not a dedicated sample-and-hold driver. The integrated sample-and-hold helps acquisition, but source settling, antialias filtering, and bandwidth still depend on the external front end. The specified 1 MHz full-power bandwidth should be treated as an input-path characteristic, not permission to omit filtering. Use the manufacturer transfer function and acquisition requirements to size the filter and establish the maximum input bandwidth.
Do not substitute the AD677 for the AD676KD: the AD677 uses a 16-pin serial output while the AD676KD uses a 28-pin parallel output. Also verify the ordering suffix, package, temperature grade, reference wiring, and pinout before accepting AD676JD or AD676KDZ as replacements. The supplied evidence establishes family similarity, but it does not provide every suffix-specific ordering detail. A mechanically similar package is not sufficient evidence of a safe drop-in replacement.
合規資訊
The supplied verified excerpts identify the AD676KD as a commercial-grade 28-CDIP ADC but do not contain explicit RoHS, REACH, halogen-free, lead-free, conflict-minerals, or automotive-qualification statements. AEC-Q100 is not applicable to the stated commercial-grade application; no automotive qualification is claimed.
