AD1376KD - 16-Bit 17us SAR ADC | Analog Devices | Hermetic DIP-32
N.º da peça: AD1376KD ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $195 | $195,00 |
| 10 | $178 | $1.780,00 |
| 100 | $165 | $16.500,00 |
| 500 | $152 | $76.000,00 |
| 1.000 | $140 | $140.000,00 |
AD1376KD Visão geral
A SAR ADC (successive-approximation register analog-to-digital converter) is a precision data converter category that performs one binary decision per clock cycle using an internal DAC and comparator, settling to full resolution in a fixed number of cycles. SAR converters sit between sigma-delta (slower, higher-resolution) and flash (fastest, lowest-resolution) in the data-converter hierarchy: they offer 12-20 bits of resolution at 10s to 100s of ksps with no pipeline delay, which makes them ideal for multiplexing multiple channels and for event-triggered sampling in industrial and instrumentation systems.
Key features include ±0.003% (1 LSB) maximum nonlinearity, no missing codes to 14 bits over the full operating temperature range, a fast 17us (AD1376KD) to 14us (AD1377) conversion time, adjustable internal clock rate, and both parallel and serial digital outputs. The 32-BBDIP-H package is a hermetically sealed ceramic DIP, suitable for military, aerospace, and harsh-environment applications where plastic packages would outgas or fail.
The AD1376/AD1377 architecture uses a precision buried-zener reference and a thin-film resistor ladder for the internal DAC, giving 16-bit monotonic conversion with excellent long-term stability. The internal clock is adjustable via an external trim potentiometer, allowing designers to trade conversion speed for power dissipation. Digital I/O is TTL-compatible and can be read as parallel or serial data.
Typical applications include industrial process control, military and aerospace instrumentation, precision data acquisition front-ends, multiplexed data-logging systems, and bench-top laboratory instruments where a complete, self-contained 16-bit ADC saves board space and design time.
When designing with this device, note the +/-15V and +5V analog supply requirements (separate AGND and DGND pins) and provide adequate decoupling at the supply pins; the input signal must be driven from a buffer amplifier with low output impedance to avoid conversion errors caused by the ADC input current transients.
This page synthesizes distributor pricing, drop-in same-brand AD1376/AD1377 family alternatives, and practical design guidance not aggregated in any single manufacturer datasheet, helping engineers select, source, and implement this legacy hermetic 16-bit SAR converter.
Alternativas drop-in para AD1376KD — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
AD1377KD
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
AD1376JD
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
AD1376SD
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
AD1377JD
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
AD1376TD
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
AD1376KD Classificações máximas e características elétricas
| Resolução | 16 bits |
| Converter Type | SAR (Successive Approximation) |
| Number of Inputs | 1 (single-ended, input range selectable) |
| Conversion Time (AD1376KD) | 17 us (max) |
| Conversion Time (AD1377) | 14 us (max) |
| Maximum Nonlinearity | 0.003% (1 LSB) |
| No Missing Codes | 14 bits over temperature |
| Internal Reference | Yes (buried-zener, laser-trimmed) |
| Internal Clock | Yes (adjustable, external trim) |
| Digital Output | Parallel and serial (TTL-compatible) |
| Faixa de tensão de entrada | 0 to +10 V, +/-5 V, 0 to +20 V (selectable per application circuit) |
| Analog Supply Voltage | +/-15 V |
| Digital Supply Voltage | +5 V |
| Power Dissipation (max) | 800 mW |
| Faixa de temperatura de operação | -55C to +125C (military / MIL-STD screening) |
| Encapsulamento | 32-BBDIP-H (32-pin hermetic ceramic DIP) |
| Tipo de montagem | Through-Hole |
Configuração de pinos do AD1376KD
| Pino 1 | BIT 1 (MSB) — Parallel data output, most significant bit (TTL) |
| Pino 2 | BIT 2 — Parallel data output bit 2 (TTL) |
| Pino 3 | BIT 3 — Parallel data output bit 3 (TTL) |
| Pino 4 | BIT 4 — Parallel data output bit 4 (TTL) |
| Pino 5 | BIT 5 — Parallel data output bit 5 (TTL) |
| Pino 6 | BIT 6 — Parallel data output bit 6 (TTL) |
| Pino 7 | BIT 7 — Parallel data output bit 7 (TTL) |
| Pino 8 | BIT 8 — Parallel data output bit 8 (TTL) |
| Pino 9 | BIT 9 — Parallel data output bit 9 (TTL) |
| Pino 10 | BIT 10 — Parallel data output bit 10 (TTL) |
| Pino 11 | BIT 11 — Parallel data output bit 11 (TTL) |
| Pino 12 | BIT 12 — Parallel data output bit 12 (TTL) |
| Pino 13 | BIT 13 — Parallel data output bit 13 (TTL) |
| Pino 14 | BIT 14 — Parallel data output bit 14 (TTL) |
| Pino 15 | BIT 15 — Parallel data output bit 15 (TTL) |
| Pino 16 | BIT 16 (LSB) — Parallel data output, least significant bit (TTL) |
| Pino 17 | STS — Status output (conversion complete flag) |
| Pino 18 | DGND — Digital ground return |
| Pino 19 | +5V (VDD) — Digital +5V supply |
| Pino 20 | SC (Short Cycle) — Short-cycle control for faster conversions at lower resolution |
| Pino 21 | CONVERT — Conversion start input (TTL, edge-triggered) |
| Pino 22 | CLK ADJ — Clock adjust (connect external trim pot for variable conversion time) |
| Pino 23 | CLK TRIM — Clock trim potentiometer terminal (TCR <100 ppm/C) |
| Pino 24 | ANALOG GND — Analog ground return (separate from DGND) |
| Pino 25 | VREF — Internal reference voltage (buried-zener, laser-trimmed) |
| Pino 26 | REF GND — Reference ground return |
| Pino 27 | -15V (VEE) — Analog negative supply |
| Pino 28 | AIN+ — Analog input positive (signal input) |
| Pino 29 | AIN-/SENSE — Analog input return / sense connection |
| Pino 30 | GAIN ADJ — External gain trim adjustment |
| Pino 31 | OFFSET ADJ — External offset trim adjustment |
| Pino 32 | +15V (VCC) — Analog positive supply |
Aplicações típicas
AD1376KD é adequado para 6 aplicaçãos: Military and Aerospace Data Acquisition, Precision Industrial Process Control, Multiplexed Data Logging Systems, Legacy Bench Laboratory Instruments, High-Accuracy Weigh Scale Systems, Seismic and Geophysics Instrumentation.
Military and Aerospace Data Acquisition
The AD1376KD fits military and aerospace data acquisition because of its -55C to +125C operating range, hermetic ceramic DIP package that resists moisture and outgassing, and full MIL-STD screening. Its 16-bit resolution with 14-bit no-missing-codes over temperature gives monotonic conversion needed for flight instrumentation, radar signal processing, and avionics telemetry. The 17us settling time supports 50 ksps throughput, adequate for vibration, strain-gauge, and thermocouple multiplexing. Unlike plastic-packaged modern ADCs, the hermetic DIP survives vibration, thermal shock, and vacuum exposure typical of aerospace platforms, making it a long-qualified choice for defense programs already designed around the AD1376 family.
Recomendado
Precision Industrial Process Control
The AD1376KD suits precision industrial process control loops where a complete single-chip 16-bit ADC simplifies design and improves reliability. Its internal reference, clock, and thin-film scaling resistors eliminate the external components that drift in industrial environments, while the 0.003% (1 LSB) integral nonlinearity ensures accurate measurement of pressure, flow, and temperature transducers. The 0-10 V, +/-5 V, and 0-20 V input ranges supported by the thin-film resistor network match standard industrial signal levels directly. The 17us conversion settles within one PLC scan cycle, enabling closed-loop control of valves and heaters with 50 ksps update rates.
Recomendado
Multiplexed Data Logging Systems
The AD1376KD works well in multiplexed data logging systems because its no-latency SAR architecture allows rapid channel-to-channel switching without pipeline delay. An external analog multiplexer can scan 8 to 16 input channels sequentially into the AD1376KD at 50 ksps aggregate rate, providing 16-bit resolution per channel for laboratory and field data loggers. The internal reference and adjustable clock remove external component count, improving channel density on the PCB. The 32-pin DIP is easy to socket for calibration or replacement in fielded instruments, simplifying long-term support of legacy data loggers.
Recomendado
Legacy Bench Laboratory Instruments
The AD1376KD fits legacy bench laboratory instruments such as digital voltmeters, integrating DMMs, and spectrum analyzer digitizer boards where its complete integration and hermetic packaging have made it a long-qualified choice. The 16-bit resolution and 0.003% linearity provide laboratory-grade DC measurement accuracy, while the 50 ksps throughput is sufficient for slow-scan bench instruments. The DIP-32 package is easy to swap for repair and calibration. Many legacy HP/Keysight and Fluke instruments used the AD1376 family; replacement stock supports field repair of installed base equipment where redesign is impractical.
Recomendado
High-Accuracy Weigh Scale Systems
The AD1376KD fits high-accuracy weigh scale and force measurement systems because its 16-bit resolution and 0.003% linearity resolve microvolt-level bridge signals at the 50 ksps rate needed for high-throughput production lines. Load-cell bridges driven through an external instrumentation amplifier feed directly into the AD1376KD's 0-10 V input range, and the internal reference eliminates a key drift source in weighing applications where long-term calibration stability is critical. The hermetic package also suits food-pharma and outdoor weigh scales where humidity and temperature swings degrade plastic ICs. Drop-in compatibility across KD and screening variants simplifies inventory for OEM weighingscale builders.
Recomendado
Seismic and Geophysics Instrumentation
The AD1376KD suits seismic and geophysics instrumentation because of its hermetic ceramic packaging, wide military temperature range, and 16-bit resolution at 50 ksps which captures broadband seismic signals from geophones and hydrophones. The no-missing-codes guarantee to 14 bits over temperature preserves signal fidelity during long field campaigns in extreme environments, and the integrated reference eliminates the calibration drift that would otherwise require periodic recalibration in remote installations. The DIP package is also field-serviceable, important for remote seismic stations where skilled technicians are scarce. Engineers building or maintaining legacy seismic networks rely on the AD1376 family for its proven reliability.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para AD1376KD — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | AD1377KD | AD1376JD | AD1376SD | AD1377JD | AD1376TD |
|---|---|---|---|---|---|---|
| Package | 32-BBDIP-H (hermetic ceramic DIP) | 32-BBDIP-H (hermetic ceramic DIP) - same | 32-BBDIP-H (hermetic ceramic DIP) - same | 32-BBDIP-H (hermetic ceramic DIP) - same | 32-BBDIP-H (hermetic ceramic DIP) - same | 32-BBDIP-H (hermetic ceramic DIP) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 16 bits | 16 bits | 16 bits | 16 bits | 16 bits | 16 bits |
| Conversion Time (max) | 17 us | 14 us (-18%) | 17 us (same) | 17 us (same) | 14 us (-18%) | 17 us (same) |
| Operating Temperature | -55C to +125C (military) | -55C to +125C (military) | 0C to +70C (commercial) | -55C to +125C (military screened) | 0C to +70C (commercial) | -55C to +125C (extended) |
| Maximum Nonlinearity | 0.003% (1 LSB) | 0.003% (1 LSB) | 0.003% (1 LSB) | 0.003% (1 LSB) | 0.003% (1 LSB) | 0.003% (1 LSB) |
| Internal Reference | Yes (buried-zener) | Yes (buried-zener) | Yes (buried-zener) | Yes (buried-zener) | Yes (buried-zener) | Yes (buried-zener) |
| Power Dissipation (max) | 800 mW | ~850 mW (slightly higher at faster clock) | 800 mW | 800 mW | ~850 mW | 800 mW |
| Architecture | SAR | SAR | SAR | SAR | SAR | SAR |
Principais diferenciais
- Complete integration in a single 32-BBDIP-H chip - reference, clock, and thin-film scaling resistors all internal
- Military -55C to +125C operating range with full MIL-STD screening on the KD suffix
- Hermetic ceramic DIP package survives harsh environments that plastic parts cannot
Notas de projeto
The AD1376KD requires three supplies - +15V and -15V analog, plus +5V digital - and draws up to 800 mW total. Per the Analog Devices datasheet, separate analog and digital grounds must be brought back independently and joined only at the ADC GND pins to avoid digital switching noise coupling into the analog conversion. Bypass each supply pin with a 0.1 uF ceramic in parallel with a 10 uF tantalum placed within 5 mm of the package; failure to decouple adequately can degrade the 16-bit linearity. Estimated: at full load 800 mW across three supplies yields roughly 50 mA on +5V, 30 mA on +15V, and 20 mA on -15V rails.
The AD1376KD analog input must be driven from a low-output-impedance buffer amplifier (such as the AD797 or AD744) because the input presents a dynamic current load during successive-approximation switching. Source impedances above 100 ohms degrade 16-bit linearity by adding settling error within the 17 us conversion window. Place the buffer amplifier within 25 mm of the ADC input pin; keep the analog input trace short and guarded with a ground plane on both sides to reduce capacitive pickup. For multiplexed applications, allow 3-5 us of additional settling time after switching the input mux before triggering conversion.
Common pitfalls include: (1) using the AD1376KD's offset/gain trim pots to dial in calibration but then forgetting they drift with temperature - in high-precision applications trim once at warm-up only or omit trimming and use system calibration; (2) connecting pin 22 (CLK TRIM) without an external trim potentiometer - this leaves the internal clock at default rate but can be left floating; (3) mistaking the -15V supply for optional - it is required for the buried-zener reference bias; and (4) driving the analog input beyond +/-25V absolute maximum - the input protection diodes can forward-bias and permanently damage the device. Use a buffer with input clamping diodes if the source is potentially over-ranged.
Informações de conformidade
AD1376KD is a legacy hermetic ceramic DIP part with MIL-STD-883 screening; RoHS compliance status not specified in the provided web data. Hermetic DIP packages typically qualify for RoHS exemptions under military/aerospace applications. Lead-free and halogen-free status not confirmed in available data.
