AD974BN - 4-Channel 16-Bit 200 kSPS ADC | Analog Devices
N.º da peça: AD974BN ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1.000 | $0 | $0,00 |
AD974BN Visão geral
An ADC converts continuously varying analog signals into numeric values for measurement, control, or signal processing. The AD974BN combines four single-ended analog inputs with a common 16-bit conversion engine, making it useful when several sensors or voltage signals must be sampled by a compact system. Its serial interface reduces the number of parallel data lines needed on the PCB and supports communication with a digital controller.
The converter provides 16-bit nominal resolution and 200 kSPS throughput. These figures define the balance between measurement detail and acquisition speed: the device samples up to 200,000 times per second while representing each selected channel with 16-bit digital data. The integrated reference is +2.5 V, and the system operates from a single +5 V supply. A power-down mode is also included for applications that need to reduce consumption when conversion is not required.
The AD974 architecture uses a four-channel input multiplexer and a successive-approximation switched-capacitor conversion process. The input multiplexer selects one of four single-ended analog channels for conversion, while the serial interface transfers conversion results. The integrated 2.5 V reference provides a defined internal reference option, and the datasheet states that the device supports either external or internal reference selection.
Typical applications include industrial process monitoring, sensor signal acquisition, laboratory instrumentation, communications equipment, and embedded measurement systems. The four-channel structure is useful when monitoring multiple voltages sequentially, while the 200 kSPS rate supports measurements where moderate-to-high sampling throughput is needed without requiring a parallel ADC output interface.
When designing around the AD974BN, preserve adequate analog and digital return paths, place input-conditioning components close to the relevant pins, and account for the selected input range when defining signal scaling. The serial interface timing and power-down behavior should be checked against the controller requirements in the Analog Devices AD974 datasheet.
Alternativas drop-in para AD974BN — 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:
AD974BNZ
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
AD974ANZ
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
AD974
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
AD974BNZ
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
AD974BN Classificações máximas e características elétricas
| Product Type | Four-channel data acquisition system with ADC |
| Resolução | 16 bit |
| Sampling Throughput | 200 kSPS |
| Analog Input Channels | 4 single-ended channels |
| Input Ranges | 0 V to +4 V, 0 V to +5 V, or ±10 V |
| Tensão de alimentação | +5 V single supply |
| Internal Reference | +2.5 V |
| Reference Selection | External or internal 2.5 V reference |
| Converter Architecture | Successive-approximation switched-capacitor ADC |
| Input Multiplexer | Four-channel analog input multiplexer |
| Interface | High-speed serial interface |
| Power-Down Mode | Yes |
| Maximum Power Dissipation | 120 mW |
| Encapsulamento | 28-pin PDIP |
| Tipo de montagem | Through-hole |
Guia de Configuração de Pinos do AD974BN 28-pin pdip
Configuração de pinos para AD974BN (pacote 28-pin pdip). Este componente analógico possui pinos de entrada, saída e alimentação. Consulte o datasheet do fabricante para configurações de offset null, compensação e pino de enable. Ideal para circuitos de condicionamento de sinal e amplificadores.
Nenhum dado detalhado de pinagem disponível para AD974BN.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
AD974BN é adequado para 6 aplicaçãos: Industrial Process Monitoring, Sensor Signal Acquisition, Laboratory Instrumentation, Communications Test Equipment, Embedded Data Acquisition, Power and Supply Monitoring.
Industrial Process Monitoring
The AD974BN fits industrial process monitoring because it combines four single-ended analog inputs with a 16-bit, 200 kSPS conversion engine. A controller can select each sensor or process-voltage channel through the multiplexer and acquire sequential measurements through the serial interface. The supported 0 V to +4 V, 0 V to +5 V, and ±10 V ranges allow the same converter family to serve different front-end signal levels. Designers should scale each sensor output into the selected range, provide protection for transient industrial faults, and verify timing against the control system.
Recomendado
Sensor Signal Acquisition
AD974BN is suitable for acquiring several low-bandwidth sensor outputs in a centralized measurement system. Its four single-ended inputs reduce the number of separate converter packages when pressure, temperature, level, or position signals must be observed in sequence. The 16-bit resolution provides the nominal measurement format, while 200 kSPS throughput supports sampling faster than many slowly changing sensor networks require. A practical design should use buffering, anti-alias filtering, and channel-specific scaling, then verify conversion timing and acquisition latency with the host controller.
Recomendado
Laboratory Instrumentation
The AD974BN can serve laboratory instrumentation that needs repeatable acquisition of four analog measurement points. A 16-bit ADC format and 200 kSPS maximum throughput allow the instrument to balance numeric resolution with sampling flexibility. The internal +2.5 V reference provides a defined source, while the datasheet also supports external-reference selection for systems that need tighter control of the measurement reference. Calibration should account for analog front-end offset, gain, input-range selection, and the difference between the internal reference and any external reference used in production.
Recomendado
Communications Test Equipment
AD974BN is appropriate for test systems that monitor several analog control or supply-related signals around communications hardware. The serial interface helps reduce PCB signal count when the converter communicates with a digital controller, and the four-channel multiplexer supports repeated measurements without requiring four separate converter packages. The 200 kSPS throughput can provide adequate margin for many supervisory and diagnostic measurements, although it is not a substitute for waveform capture with much higher bandwidth requirements. Input conditioning should preserve signal integrity and prevent out-of-range transients from reaching the converter.
Recomendado
Embedded Data Acquisition
The AD974BN works well in embedded acquisition systems requiring several analog measurements and a compact serial connection. Its single +5 V supply simplifies system power planning, while the internal 2.5 V reference and selectable reference source provide flexibility in embedded designs. The 16-bit conversion format can be useful when the system must preserve measurement detail from sensors or potentiometric positions. Firmware should handle channel selection, conversion status, reference configuration, and power-down sequencing according to the interface timing defined by the manufacturer.
Recomendado
Power and Supply Monitoring
AD974BN can monitor several voltage-related points in a power subsystem when those signals are conditioned into one of its supported input ranges. Four single-ended channels allow sequential measurement of rails, dividers, or control signals, while 200 kSPS throughput supports relatively rapid supervisory updates. The converter is not a replacement for a dedicated high-resolution power monitor when accuracy, isolation, or fault-response requirements exceed the AD974BN application envelope. Add resistor-divider attenuation, input filtering, and protection before connecting power rails.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para AD974BN — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | AD974BNZ | AD974ANZ | AD974ARZ | AD974 |
|---|---|---|---|---|---|
| Package | 28-pin PDIP | 28-pin PDIP | 28-pin PDIP | SOIC-28 | 28-pin PDIP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
Principais diferenciais
- Four-channel acquisition with a serial interface (vs AD974ARZ)
- Single +5 V operating supply (vs AD974ANZ)
- Internal +2.5 V reference with external-reference option (vs AD974ARZ)
Notas de projeto
Route analog input traces away from digital serial-interface and switching-supply traces. Place input-conditioning components close to the AD974BN pins, and use a continuous ground reference where possible. Because the converter includes a high-speed serial interface, keep clock and data routing short and controlled; otherwise, edge-related crosstalk can reduce the effective margin of the 16-bit conversion system.
Do not treat the four-channel capability as four simultaneous 16-bit converters. The verified architecture uses a four-channel input multiplexer feeding one sampling ADC, so channels are selected sequentially. Firmware and hardware timing must account for channel selection, conversion status, and serial transfer. Also confirm the selected 0 V to +4 V, 0 V to +5 V, or ±10 V input range before applying external signals.
Use a single +5 V supply as specified for the AD974BN and follow the manufacturer’s decoupling recommendations. The verified datasheet information lists maximum power dissipation as 120 mW, but actual board temperature depends on operating activity, package, copper area, and ambient temperature. If the power-down mode is used, verify that the host controller does not assume the converter remains active during a conversion sequence.
Informações de conformidade
The verified web data does not provide RoHS, REACH, lead-free, halogen-free, or conflict-minerals statements for AD974BN.