AD977BN - 16-Bit 100 kSPS ADC | Analog Devices
MPN: AD977BN ✗ Cuối đờiAD977BN Tóm tắt
An ADC converts an analog voltage into a digital code for measurement, control, instrumentation, and signal-processing systems. The AD977 belongs to the successive-approximation ADC, or SAR ADC, family within the broader data-converter and mixed-signal semiconductor hierarchy. Its 16-bit resolution supports fine amplitude quantization, while its 100 kSPS throughput is suited to accurate acquisition of slowly changing or moderate-bandwidth signals.
The verified product information identifies a 16-bit SAR architecture, one analog input, serial I/O, and operation from a single 5 V supply. Available input ranges include unipolar 0 V to 5 V and 0 V to 4 V, plus bipolar 0 V to 5 V and 0 V to 3.3 V. The AD977 family also offers an external-reference option, while the manufacturer describes the converter as a low-power, high-speed data-acquisition device.
The AD977A is a related family member with a 200 kSPS throughput rate, whereas the AD977 used by AD977BN is specified at 100 kSPS. This distinction matters when selecting a replacement: a faster related device may require different timing, acquisition, and system-level validation even when its resolution and function are similar.
Typical applications include industrial process measurement, laboratory data acquisition, instrumentation, transducer interfaces, and embedded control systems. The serial interface can reduce PCB routing requirements compared with a parallel ADC, but the host processor must read the serial data at the converter's supported rate and account for acquisition and conversion timing.
For robust designs, provide a stable reference and supply, connect the analog input according to the selected input range, and validate signal-conditioning bandwidth against the 100 kSPS throughput. The 20-pin PDIP package is through-hole and is not a direct substitute for surface-mount implementations without a package and pinout review.
This page combines the verified Analog Devices family description, distributor identification, package information, and practical selection guidance. It also distinguishes the AD977BN from the faster AD977A rather than presenting related family variants as interchangeable without qualification.
Bộ thay thế dễ dàng lắp đặt cho AD977BN — 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 AD977BN (cùng hình factor và footprint) — khác nhau ở Package, Converter Type, Factory Calibration, Supply Voltage.
AD977ANZ
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
AD977ARZ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →AD977BRZ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →AD977ARZ-REEL7
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
AD977ARZ-REEL
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
AD977BN Tỷ lệ tối đa & tính chất điện
| Converter Type | Successive-approximation ADC |
| Độ phân giải | 16 bit |
| Number of Analog Inputs | 1 input |
| Throughput Rate | 100 kSPS |
| Điện áp cung cấp | 5 V single supply |
| Input Range, Unipolar | 0 V to 5 V or 0 V to 4 V |
| Input Range, Bipolar | 0 V to 5 V or 0 V to 3.3 V |
| Giao diện | Serial I/O |
| Hộp | 20-pin PDIP |
| Power Dissipation | 100 mW maximum |
| Power-Down Mode | Available |
| Reference | External reference option |
| AD977A Family Throughput | 200 kSPS |
| AD977 Family Throughput | 100 kSPS |
| Technology | BiCMOS |
Hướng dẫn cấu hình chân AD977BN 20-pin pdip
Cấu hình chân cho AD977BN (20-pin pdip 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 AD977BN.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
AD977BN phù hợp cho 6 Áp dụngs: Industrial Process Measurement, Laboratory Data Acquisition, Precision Sensor Interface, Embedded Control Systems, Test and Measurement Equipment, Audio and Communication Measurement.
Industrial Process Measurement
The AD977BN fits industrial process measurement when the sensed voltage changes slowly enough for its 100 kSPS throughput and the application values 16-bit resolution. Place it after the sensor amplifier, protection network, and analog filter so the selected unipolar or bipolar range remains valid. The single 5 V supply can simplify system partitioning, while the serial interface reduces parallel data routing. Confirm reference stability and calibrate offset and gain because resolution alone does not determine total measurement accuracy.
Được đề xuất
Laboratory Data Acquisition
The AD977BN is suitable for laboratory instrumentation that needs a precise 16-bit measurement from a controlled analog source at up to 100 kSPS. Its serial interface is useful when the host controller is nearby and PCB space is constrained, but the controller must handle acquisition, conversion, data transfer, and status timing accurately. Use a stable external reference and carefully shield the analog input from laboratory switching noise. Validate input settling before each sample.
Được đề xuất
Precision Sensor Interface
The AD977BN can digitize conditioned outputs from pressure, temperature, position, and other analog sensors when bandwidth and range requirements fit. The 16-bit conversion provides a high-resolution digital value for calibration, monitoring, and control loops, while the 100 kSPS rate is sufficient for many slow or moderate-speed sensing systems. Design the front end for sensor excitation, common-mode voltage, filtering, and overvoltage protection; do not assume the ADC input accepts arbitrary sensor outputs.
Được đề xuất
Embedded Control Systems
The AD977BN is appropriate for embedded control and monitoring systems that need a 16-bit ADC rather than a lower-resolution converter. Its 1-input serial architecture can connect to a microcontroller or programmable logic device when the system supports the timing and logic levels required by the ADC. The 5 V supply requirement must be checked against the controller and analog front end. Firmware should account for startup, conversion completion, serial transfer, and any power-down sequence.
Được đề xuất
Test and Measurement Equipment
The AD977BN can support precision test equipment, signal analyzers, and calibration systems where a 100 kSPS acquisition rate is adequate. Its 16-bit format is useful for representing low-level analog measurements after suitable amplification and filtering. The serial output may simplify connections to a controller, but analog grounding, reference routing, and clock cleanliness remain critical. For high-speed or wide-bandwidth instruments, verify whether 100 kSPS is sufficient before finalizing the design.
Được đề xuất
Audio and Communication Measurement
The AD977BN may be used for slow or moderate-bandwidth audio and communications measurement when the source is conditioned into one of the supported input ranges and the acquisition rate is sufficient. The converter's 16-bit format can improve amplitude resolution for measurement, monitoring, or feedback applications, but it is not a high-resolution audio DAC. Use anti-alias filtering and a defined reference, and check whether the target signal's bandwidth and dynamic range fit the 100 kSPS device rather than assuming general-purpose ADC suitability.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho AD977BN — 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 | AD977ANZ | AD977ARZ | AD977BRZ | AD977ARZ-REEL7 | AD977ARZ-REEL |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 20-pin PDIP | 20-pin PDIP | 20-pin PDIP | 20-pin PDIP | 20-pin PDIP | 20-pin PDIP |
Bảo phân biệt quan trọng
- AD977BN is specified at 100 kSPS rather than the AD977A family member at 200 kSPS. (vsAD977A)
- Verified distributor information identifies a single 16-bit SAR ADC with serial I/O. (vsAD977A)
- The AD977BN supports a single 5 V supply according to the manufacturer family description. (vsAD977A)
Ghi chú thiết kế
Keep the analog input path short and place input filtering or protection components close to the AD977BN pins. The verified data confirms a serial 20-pin PDIP device, but does not provide the exact pin table; use the manufacturer pinout to route the analog input, reference, supply, ground, and serial signals. Maintain a quiet return path and separate sensitive analog routing from digital switching nodes.
Treat acquisition timing as part of the analog signal chain. Confirm the source impedance, settling time, sample-and-hold behavior, and conversion sequence against the selected input range before sampling. A 16-bit converter does not guarantee 16-bit system accuracy if the input is still ringing, the reference is unstable, or the amplifier and filter introduce distortion.
Provide a clean 5 V supply and decouple it near the device according to the manufacturer layout and capacitor guidance. The verified family information states single 5 V operation and 100 mW maximum power dissipation. Verify supply tolerance, startup behavior, grounding, and power-down sequencing with the exact datasheet because those limits are not fully present in the supplied search snippets.
Thông tin tuân thủ
The supplied verified search results identify the manufacturer and product family but do not provide verified compliance statements for the AD977BN.