AD974ANZ - 4-Ch 16-Bit 200 kSPS ADC | Analog Devices
MPN: AD974ANZ ✓ Hoạt độngAD974ANZ Tóm tắt
An ADC is an analog-to-digital converter that samples continuous voltage signals and converts them into numeric values for measurement or processing. The AD974 belongs to the data acquisition system and ADC hierarchy, combining a four-channel input multiplexer, a 16-bit sampling converter, an internal reference, and a serial digital interface in one package. Its multiplexed architecture is intended for instrumentation and industrial systems that require compact multi-channel data acquisition.
Key features include 16-bit resolution, 200 kSPS aggregate throughput, four single-ended input channels, and operation from one 5 V supply. A power-down function can reduce consumption from a maximum of 100 mW in the datasheet description to a typical 50 μW when the PWRD pin is asserted. The available input ranges cover unipolar 0–4 V and 0–5 V signals as well as bipolar ±10 V signals, reducing the need for separate front-end scaling circuits for different signal classes.
The internal architecture uses a four-channel input multiplexer followed by a high-speed, 16-bit, successive-approximation, switched-capacitor ADC. A 2.5 V internal reference supports repeatable conversion measurements, while the serial interface provides a compact connection to a controller, DSP, or embedded data-acquisition system. The converter is designed for low-power single-supply operation and accommodates both analog and reference power-down control.
Typical applications include industrial process monitoring, laboratory instrumentation, multichannel sensor acquisition, factory automation, embedded measurement systems, and compact data loggers. In each case, the four-channel multiplexer reduces the number of external analog front ends, while 200 kSPS throughput supports periodic sampling of multiple analog quantities. Systems requiring continuous simultaneous sampling rather than multiplexed acquisition need a different converter architecture.
The primary design consideration is the input and reference behavior. Designers must select the correct input range, account for the maximum 120 mW power dissipation listed in the available part data, and provide suitable bypassing for the single 5 V supply. Signal conditioning may also be required to keep source impedance and voltages within the AD974 input limits.
This product page consolidates the verified manufacturer specifications, distributor package information, power characteristics, and honest drop-in replacement findings. It also distinguishes verified equivalents from unsupported package variants so engineers can make a PCB-safe sourcing decision.
Bộ thay thế dễ dàng lắp đặt cho AD974ANZ — 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 AD974ANZ (cùng hình factor và footprint) — khác nhau ở Package, Product Type, Supply Voltage, Mounting Type, Input Multiplexer.
AD974AN
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →AD974BNZ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →AD974ANZ Tỷ lệ tối đa & tính chất điện
| Product Type | Data acquisition system with ADC |
| ADC Resolution | 16 bit |
| Tỷ lệ lấy mẫu | 200 kSPS |
| Input Channels | 4 single-ended channels |
| Input Multiplexer | 4-channel analog input multiplexer |
| ADC Architecture | Successive-approximation switched-capacitor ADC |
| Analog Input Ranges | 0 V to +4 V, 0 V to +5 V, or ±10 V |
| Điện áp cung cấp | 5 V |
| Minimum Supply Voltage | 4.75 V |
| Maximum Supply Voltage | 5.25 V |
| Internal Reference Voltage | +2.5 V |
| Digital Interface | Serial interface |
| Maximum Power Dissipation | 120 mW |
| Power-Down Typical Power | 50 μW |
| Active Power Consumption | 100 mW maximum |
| Hộp | 28-PDIP, 0.600 in (15.24 mm) |
| Kiểu lắp đặt | Through-hole |
| Lead-Free Status | Lead-free |
| Trạng thái RoHS | RoHS compliant |
Hướng dẫn cấu hình chân AD974ANZ 28-pdip, 0.600 in (15.24 mm)
Cấu hình chân cho AD974ANZ (28-pdip, 0.600 in (15.24 mm) 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 AD974ANZ.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
AD974ANZ phù hợp cho 6 Áp dụngs: Industrial Process Monitoring, Laboratory Data Acquisition, Factory Automation Controllers, Multichannel Sensor Acquisition, Embedded Measurement Systems, Compact Data Loggers.
Industrial Process Monitoring
The AD974ANZ fits industrial process monitoring where several analog sensors must be scanned by one acquisition channel. Its four single-ended inputs reduce repeated front-end circuitry, while 16-bit resolution and 200 kSPS throughput support periodic pressure, level, or temperature measurements. The device accepts 0–4 V, 0–5 V, or ±10 V signals from suitable conditioners and operates from one 5 V supply. Because the channels are multiplexed rather than simultaneous, applications requiring coincident waveform capture need another converter architecture.
Được đề xuất
Laboratory Data Acquisition
The AD974ANZ is appropriate for compact laboratory data-acquisition equipment requiring multiple channels and 16-bit measurement resolution. The four-channel multiplexer allows instrument designers to use one converter for several analog inputs, and the internal 2.5 V reference supports a self-contained measurement chain. With a serial interface and 200 kSPS throughput, the part can serve automated bench systems, though its multiplexed sampling architecture is better suited to periodic measurements than simultaneous phase-sensitive acquisition.
Được đề xuất
Factory Automation Controllers
The AD974ANZ supports factory automation and embedded control systems that monitor several analog process points. Its 4.75–5.25 V operating range simplifies use with conventional 5 V control electronics, while the selectable 0–4 V, 0–5 V, or ±10 V input ranges accommodate different transducer outputs after conditioning. The PWRD control is useful during inactive intervals because the manufacturer datasheet reports a typical 50 μW power-down consumption.
Được đề xuất
Multichannel Sensor Acquisition
The AD974ANZ is suitable for multichannel sensor acquisition in equipment that must monitor more than one physical variable. Its four single-ended inputs reduce the number of ADC front ends, and 16-bit conversion resolution supports detailed measurements when the selected 200 kSPS aggregate rate meets the application's sampling requirement. The internal 2.5 V reference simplifies instrumentation, but source impedance and anti-alias filtering must be designed around the datasheet input specifications.
Được đề xuất
Embedded Measurement Systems
The AD974ANZ provides a compact acquisition front end for embedded measurement systems using 5 V electronics. Four multiplexed single-ended channels, a serial data interface, and a 2.5 V internal reference allow a controller to acquire multiple conditioned analog inputs without a separate reference circuit. The 28-PDIP package favors leaded industrial hardware and prototypes, while the lack of simultaneous sampling makes the device less appropriate for vibration, phase, or waveform systems that require correlated channel measurements.
Được đề xuất
Compact Data Loggers
The AD974ANZ can serve as the analog acquisition element in a compact data logger for slow or periodic analog signals. Four input channels reduce connector count, the 16-bit resolution preserves measurement detail, and the serial interface allows sampled data to be transferred to an embedded controller. Its 200 kSPS capability provides ample margin for many environmental and industrial logging tasks, although the operating-temperature range is not stated in the supplied data and must be checked before field deployment.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho AD974ANZ — 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 | AD974AN | AD974BNZ |
|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices |
| Package | 28-PDIP | 28-PDIP | 28-PDIP |
| Resolution | 16 bit | 16 bit | 16 bit |
| Sampling Rate | 200 kSPS | 200 kSPS | 200 kSPS |
| Input Channels | 4 single-ended channels | 4 channels | 4 channels |
| Supply Voltage | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V |
| Internal Reference | 2.5 V | 2.5 V | 2.5 V |
| Digital Interface | Serial | Serial | Serial |
| Analog Input Ranges | 0–4 V, 0–5 V, or ±10 V | 0–4 V, 0–5 V, or ±10 V | 0–4 V, 0–5 V, or ±10 V |
| Power-Down Typical Power | 50 μW | 50 μW | 50 μW |
Bảo phân biệt quan trọng
- Verified near-identical ordering-code alternative (vsAD974AN)
- Four-channel acquisition without four external ADCs (vsAD974BNZ)
- Selectable unipolar and bipolar input ranges (vsAD974AN)
- Low-power shutdown for intermittent acquisition (vsAD974BNZ)
Ghi chú thiết kế
Use a single 5 V supply within the verified 4.75–5.25 V operating range and place the supply bypass capacitors close to the appropriate power and ground pins. The manufacturer datasheet describes analog and reference power-down through PWRD; asserting it reduces typical consumption to 50 μW. Do not assume that powering down the converter allows its input pins to accept signals outside the selected range.
Route analog input traces away from the serial data lines and digital return currents, and keep the input network close to the converter. Because the AD974 multiplexes four channels, unequal settling times can create channel-dependent errors when the source impedance is high. Follow the manufacturer's input-conditioning and layout guidance, and verify settling at the 200 kSPS aggregate sampling rate.
The four inputs are multiplexed and are not sampled simultaneously. Do not use AD974ANZ for phase-sensitive, vibration, or other applications that require coincident acquisition unless the system has been validated for the resulting time skew. Also confirm the selected 0–4 V, 0–5 V, or ±10 V range against the source amplitude before applying external signals.
The available distributor data lists maximum power dissipation as 120 mW, while the manufacturer datasheet describes a maximum active power consumption of 100 mW under specified conditions. Treat 120 mW as the thermal design limit until confirmed against the exact datasheet table and test conditions. Provide adequate PCB copper and verify the ambient and junction-temperature requirements for the intended enclosure.
Thông tin tuân thủ
The supplied DigChip part data identifies AD974ANZ as lead-free and RoHS compliant. REACH, halogen-free, conflict-minerals, and automotive qualification information were not supplied.
