AD677BD - 16-Bit 100 kSPS Serial ADC | Analog Devices
MPN: AD677BD ⚠ Bahagian terakhir untuk beliAD677BD Ringkasan
A sampling ADC is a data-conversion IC that samples an analog voltage and converts it into a digital code. In the broader semiconductor hierarchy, the AD677BD belongs to the ADC/DAC class of data-conquisition and signal-processing ICs. Its internal switched-capacitor network uses charge redistribution to perform successive approximation, while on-chip autocalibration digitally corrects internal nonlinearities. The result is a converter designed to simplify the analog front end while retaining serial digital output for control systems, test equipment, and industrial measurement products.
The AD677BD provides 16-bit resolution, 100 kSPS throughput, one analog input, and serial data output. It operates from +5 V and ±12 V supplies and typically consumes 450 mW with a 10 V reference or 360 mW with a 5 V reference during conversion. The separately supplied digital voltage reduces coupling from switching activity in the analog circuitry into the digital output domain.
The converter's 10 µs conversion time permits continuous acquisition at its 100 kSPS maximum rate. The AD677 family is segmented onto two monolithic chips, with internal autocalibration used to optimize performance. Commercial and industrial temperature options exist in the family, but the exact temperature grade and calibration details for AD677BD should be confirmed against the manufacturer ordering information before deployment.
Typical applications include industrial process monitoring, instrumentation, laboratory data acquisition, communications equipment, and embedded measurement systems. The serial interface reduces the number of interconnects compared with a parallel-output converter, while the 16-pin ceramic DIP supports conventional through-hole assembly. Board-level digital isolation and careful grounding remain necessary because the converter combines analog input, reference, clock, and serial-data paths on one package.
Designers should verify reference voltage, input range, acquisition timing, supply sequencing, and clock requirements against the AD677 datasheet. The analog and digital supplies should be decoupled independently, and the input source must provide adequate settling time during the 10 µs conversion interval. Because the AD677BD is marked LAST TIME BUY, new production designs should verify availability and consider a currently supported converter rather than making an unqualified last-time-buy commitment.
This page consolidates the verified manufacturer and distributor information for AD677BD, distinguishes the confirmed converter characteristics from unresolved ordering details, documents same-family replacement candidates, and adds practical design guidance for power, grounding, timing, and component-availability decisions.
Pilihan pengganti yang segera untuk AD677BD — sama paket, pin-pin kompatibel. Bahagian paket yang berbeza memerlukan kerja ulang PCB diasingkan.
Varietas dalam siri ini
Model serupa yang kompatibel dengan pengganti yang segera AD677BD (sama faktor bentuk dan kaki) — berbeza dalam Package, Total Conversion Time.
AD677AD
✅ Masuk Drop-InHubungi untuk harga
Lihat Datasheet →AD677KD
✅ Masuk Drop-In📋 Alternatif rujukan (tidak dalam katalog)
AD677JNZ
✅ Masuk Drop-In📋 Alternatif rujukan (tidak dalam katalog)
AD677BD Penilaian maksimum & Ciri-ciri Elektrik
| Converter Type | 16-bit sampling ADC |
| Architecture | Switched-capacitor charge-redistribution SAR |
| Pemecahkatan | 16 bit |
| kadar sampling | 100 kSPS |
| Total Conversion Time | 10 µs |
| Input Count | 1 analog input |
| Jenis Output | Serial |
| Analog Supply | +5 V and ±12 V |
| Digital Supply | Separate 5 V digital supply |
| Typical Power Consumption | 450 mW during conversion with 10 V reference |
| Typical Power Consumption with 5 V Reference | 360 mW during conversion |
| On-Chip Calibration | Digital autocalibration corrects internal nonlinearities |
| Kemasan | 16-pin ceramic DIP |
| Jenis Pemasangan | Through-hole |
| Lead Pitch | 2.54 mm |
| Package Width | 7.62 mm |
| Analog Devices Family Temperature Range | 0 °C to +70 °C commercial or -40 °C to +85 °C industrial |
Panduan Konfigurasi Pin AD677BD 7.62 mm
Konfigurasi pin untuk AD677BD (7.62 mm pakai). Komponen analog ini mempunyai pin masukan, keluaran, dan kuasa. Rujuk dokumen pengeluar untuk konfigurasi pengecualian, pemulihan, dan pin aktifkan. Ideal untuk pengawasan isyarat dan litar pengukur.
Tiada data garisan pin yang diperoleh untuk AD677BD.
Rujuk kepada lembaran data untuk konfigurasi pin penuh.
Aplikasi Biasa
AD677BD patut untuk 6 aplikasis: Industrial Process Monitoring, Laboratory Instrumentation, Data-Acquisition Systems, Communications and Telemetry, Test and Measurement Equipment, Embedded Control and Monitoring.
Industrial Process Monitoring
The AD677BD fits industrial process monitoring where a sensor signal must be digitized into a 16-bit serial code at up to 100 kSPS. Its 10 µs conversion time supports repeated measurements, while the separate digital and analog supplies help reduce switching crosstalk in the measurement chain. Place the converter near the sensor interface, maintain a stable reference, and allow the source impedance to settle during acquisition. Because the AD677 is LAST TIME BUY, use AD677BD only where maintaining an existing installation is more valuable than starting a new long-term design.
Laboratory Instrumentation
The AD677BD is appropriate for laboratory measurement equipment requiring a 16-bit nominal-resolution ADC with a 100 kSPS sampling rate. Its serial output reduces the number of data-interface traces compared with a parallel converter, simplifying routing to a controller or FPGA. The measured channel must still meet the 10 µs acquisition and conversion timing budget, and the reference should have low noise and stable temperature behavior. A compact 16-CDIP package also allows the converter to be placed close to analog front-end components, reducing sensitivity to PCB noise.
Data-Acquisition Systems
The AD677BD can serve as the analog conversion stage in a moderate-speed data-acquisition system because it combines 16-bit nominal resolution, one analog input, and 100 kSPS throughput. Its serial output can feed a digital controller after clocking and framing are implemented correctly. The separate digital supply is particularly useful in mixed-signal systems where converter activity could otherwise couple into the analog input path. Designers should budget the 10 µs conversion interval for acquisition, conversion, and digital transfer, and should verify the exact input range and reference requirements.
Communications and Telemetry
The AD677BD is usable in communications and telemetry equipment for converting a conditioned analog measurement into a serial digital stream. Its 100 kSPS maximum rate is suitable for many supervisory, environmental, and status-monitoring channels rather than high-bandwidth waveform acquisition. The serial interface reduces wiring density, while independent analog and digital supplies support cleaner partitioning of sensitive and switching domains. Firmware or control logic must maintain the required clock relationship and transfer timing so that no sample is captured before the preceding conversion has completed.
Test and Measurement Equipment
The AD677BD fits legacy test and measurement equipment requiring a 16-bit sampling ADC at 100 kSPS without a high-speed parallel data bus. It can digitize a controlled test signal for amplitude, position, or condition analysis when the input range and source impedance meet the converter requirements. The 10 µs conversion time defines the minimum interval for successive samples in the intended operating mode. For calibration and low-level measurements, reference stability and analog grounding are likely to matter more than the converter's nominal 16-bit code width.
Embedded Control and Monitoring
The AD677BD can support embedded condition monitoring by converting a transducer output into a serial code readable by a microcontroller or digital controller. Its single analog input and 100 kSPS throughput provide adequate speed for temperature, pressure, position, and equipment-health measurements. The 16-pin ceramic DIP supports repair and preservation of older through-hole control boards, but new embedded products should verify lifecycle constraints before committing. Use local decoupling, a clean reference, and controlled grounding to prevent board-level noise from consuming a meaningful portion of the 16-bit measurement range.
Data referensi kejuruteraan untuk AD677BD — perbandingan, panduan rancangan, dan maklumat kesediaan
Panduan Pilihan
Perbandingan dengan Gantian
| Parametr | Produk Ini | AD677AD | AD677KD | AD677JNZ |
|---|---|---|---|---|
| Package | 16-CDIP | 16-CDIP | 16-CDIP | 16-CDIP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit |
| Sampling Rate | 100 kSPS | 100 kSPS | 100 kSPS | 100 kSPS |
| Total Conversion Time | 10 µs | 10 µs | 10 µs | 10 µs |
| Architecture | Switched-capacitor charge-redistribution SAR | AD677-family switched-capacitor charge-redistribution SAR | AD677-family switched-capacitor charge-redistribution SAR | AD677-family switched-capacitor charge-redistribution SAR |
| Input Count | 1 input | 1 input | 1 input | 1 input |
| Output Type | Serial | Serial | Serial | Serial |
| Supply Arrangement | +5 V and ±12 V with separate digital supply | +5 V and ±12 V with separate digital supply | +5 V and ±12 V with separate digital supply | +5 V and ±12 V with separate digital supply |
Penyeberangsung Jelas
- Verified 16-CDIP package identification (vsAD677KD)
- Explicit 10 µs total conversion time (vsAD677AD)
- Separate analog and digital supply architecture (vsAD677JNZ)
Catatan Desain
Decouple the analog and digital supplies independently and route them through low-impedance planes. The Analog Devices product information states that separating digital VDD from analog VCC and VEE reduces digital crosstalk, while typical conversion power can reach 450 mW with a 10 V reference. Follow the datasheet's recommended capacitor values and place them close to the relevant supply pins rather than sharing a single long decoupling path.
Design the analog input source for correct settling during the acquisition interval that precedes the AD677BD's 10 µs conversion time. The verified excerpts do not provide the exact input range or source-impedance limits, so use the manufacturer datasheet for the acquisition capacitor, source impedance, and allowed input bandwidth. Do not estimate these values from the nominal 16-bit resolution because settling error can dominate the converter's theoretical linearity.
Place the converter, reference connection, input-conditioning components, and analog bypass capacitors close together. Keep the serial clock and data routing away from the analog input and reference nodes, and provide a clear return path for digital current. Because the AD677BD uses a through-hole ceramic DIP, lead-routing inductance can be greater than in a fine-pitch surface-mount package, making compact decoupling and careful ground return paths especially important.
Do not treat every AD677 suffix as automatically interchangeable without checking the manufacturer ordering table. AD677BD, AD677AD, AD677KD, and AD677JNZ appear in the verified family comparison data, but package construction, temperature grade, and ordering attributes may differ. Before substitution, confirm pin names, electrical characteristics, temperature range, ceramic-DIP dimensions, and manufacturer lifecycle status. The AD677 family is marked LAST TIME BUY.
Maklumat Kesediaan
A third-party distributor snippet describes AD677BD as RoHS-compliant and lead-free, but the supplied authoritative manufacturer excerpts do not provide formal compliance details. The values are therefore recorded as unknown rather than treating the distributor statement as authoritative.
