AD623ANZ - 8-Pin Instrumentation Amplifier | Analog Devices
料号： AD623ANZ ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
AD623ANZ 概述
An instrumentation amplifier is a specialized analog amplifier optimized for amplifying a small differential signal riding on a larger common-mode voltage. In the signal-chain hierarchy, an instrumentation amplifier belongs to the amplifier family and supports precision measurement, bridge excitation, biomedical instrumentation, and industrial sensing. The AD623 combines that differential-input function with rail-to-rail output capability, allowing the output to approach the supply limits under suitable load conditions.
The AD623 is designed for low-power analog systems and provides user flexibility through a single gain-setting resistor. The AD623ANZ package designation identifies the Analog Devices orderable variant listed by DigiKey as an 8-PDIP device. The manufacturer page describes rail-to-rail output swing and supply operation from 2.7 V to 12 V, while the AD623 datasheet identifies the device as a single- or dual-supply, rail-to-rail, low-cost instrumentation amplifier.
Instrumentation-amplifier performance depends on matching internal resistor networks, input bias behavior, gain accuracy, bandwidth, and the voltage headroom available around the input and output. Because the verified sources provide only high-level product and supply information, exact gain error, noise density, common-mode rejection, input bias current, bandwidth, and temperature limits must be confirmed against the manufacturer datasheet before design release. The AD623 datasheet is the authoritative source for those electrical characteristics.
Typical uses include bridge-based pressure and load sensing, low-level transducer amplification, battery-powered measurement equipment, and industrial signal conditioning. In a bridge circuit, the AD623 can amplify the small differential bridge output while rejecting the larger common-mode voltage. Designers should check input common-mode range, output swing, gain equation, supply voltage, and external resistor tolerance against the exact operating condition.
For PCB implementation, preserve the manufacturer-recommended pin assignments and provide short, low-noise routing between the sensor source, gain resistor, supply bypass network, and output receiver. A clean analog ground return and adequately decoupled supply rails help preserve measurement integrity. This page combines verified manufacturer and distributor information with engineering selection guidance, while clearly separating confirmed values from parameters still requiring datasheet confirmation.
直接替换替代料： AD623ANZ ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： AD623ANZ （相同外形与封装尺寸） ——差异在于 Number of Circuits, Package, RoHS Status.
快速对比工具——选择替代料号进行并排对比：
AD623ARZ-R7
✅ 直接替换✓ 有现货
$2.65 / 个
查看数据手册 →AD623BNZ
✅ 直接替换📋 参考替代料（不在目录中）
AD623ARMZ
✅ 直接替换📋 参考替代料（不在目录中）
AD623ANZ 最大额定值与电气特性
| Product Type | Instrumentation amplifier |
| Number of Circuits | 1 circuit |
| Supply Voltage Range | 2.7 V to 12 V |
| Single-Supply Configuration | 3 V to 12 V |
| Dual-Supply Operation | Supported |
| Output Swing | Rail-to-rail |
| Gain Programming | Single external gain-set resistor |
| 封装 | 8-PDIP |
| Lead Count | 8 leads |
| Input Signal | Differential |
| Common-Mode Handling | Instrumentation-amplifier input |
| Power Class | Low-cost, low-power instrumentation amplifier |
| Product Class | Rail-to-rail instrumentation amplifier |
| Pin Configuration | Industry-standard 8-lead instrumentation-amplifier configuration |
| RoHS 状态 | Unknown |
| REACH Status | Unknown |
| AEC-Q100 Qualification | Not applicable |
AD623ANZ 8-pdip 引脚配置指南
AD623ANZ（8-pdip 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： AD623ANZ.
请参阅 数据手册 以查看完整引脚配置。
典型应用
AD623ANZ 适用于 6 应用s: Bridge-Based Pressure Sensing, Industrial Transducer Conditioning, Battery-Powered Measurement, Load-Cell Signal Conditioning, Biomedical and Diagnostic Signal Conditioning, Test and Measurement Instrumentation.
Bridge-Based Pressure Sensing
The AD623ANZ fits bridge-based pressure sensing because it is designed as a differential instrumentation amplifier rather than a general-purpose single-ended amplifier. Place it after the resistive bridge so the small differential output can be amplified while the bridge’s larger common-mode voltage is handled by the instrumentation-amplifier architecture. The verified 2.7 V to 12 V supply range supports low-voltage sensor systems, and the one-resistor gain programming simplifies setting the overall gain. Confirm the bridge excitation voltage, input common-mode range, output swing, and gain bandwidth in the AD623 datasheet before fixing the sensor interface. The 8-PDIP package is useful for through-hole laboratory, industrial, and legacy equipment where a conventional DIP footprint is preferred.
推荐
Industrial Transducer Conditioning
The AD623ANZ is appropriate for industrial transducer front ends that produce a small differential signal over a larger common-mode voltage. Its instrumentation-amplifier configuration is intended to reduce the need for several discrete precision elements in the gain path, while the single external gain-set resistor gives the designer a straightforward way to establish the required scale. The verified manufacturer description confirms single- and dual-supply operation and rail-to-rail output swing, but exact common-mode limits and gain accuracy are not present in the supplied data. The designer must therefore verify sensor excitation, signal bandwidth, supply headroom, and temperature limits in the official datasheet before production release.
推荐
Battery-Powered Measurement
The AD623ANZ can support battery-powered measurement systems because its verified supply capability extends down to 2.7 V and includes a 3 V to 12 V single-supply configuration. That range is useful for portable data-acquisition, environmental monitoring, and handheld test equipment where a higher-voltage analog rail would increase power-system complexity. The instrumentation-amplifier function is useful when a sensor produces a differential output and the system needs gain before conversion or digital processing. The actual battery operating range must be checked against minimum supply voltage, input common-mode requirements, output swing, and device-specific current consumption, which are not quantified in the supplied source snippets.
推荐
Load-Cell Signal Conditioning
The AD623ANZ is a logical candidate for load-cell and strain-gauge front ends because these sensors generate a differential millivolt-level output and are commonly used with instrumentation amplifiers. The single gain-setting resistor simplifies the analog gain network, while the rail-to-rail output helps preserve output range in low-voltage systems. The bridge output must remain inside the AD623 input common-mode limits, and the selected gain must provide adequate signal-to-noise performance without saturating the output. Confirm the bridge excitation scheme, lead-length error, filter requirements, and exact AD623 noise and CMRR specifications in the manufacturer datasheet before choosing the final gain resistor.
推荐
Biomedical and Diagnostic Signal Conditioning
The AD623ANZ may be evaluated for low-level biomedical or diagnostic signal conditioning when the sensor output is differential and the acquisition system uses a low-noise, single-supply analog front end. Its instrumentation-amplifier architecture is better matched to this task than a bare general-purpose op amp because the device is designed for differential amplification and programmable gain. However, the supplied data does not establish medical qualification, input protection, patient isolation, noise density, or safety compliance. Those requirements must be treated as unresolved and verified through the full datasheet and the applicable medical-system design process before patient-connected use.
推荐
Test and Measurement Instrumentation
The AD623ANZ is useful in test and measurement equipment that must amplify small differential signals before an ADC or measurement converter. Its 8-PDIP package supports conventional through-hole construction and can be convenient in laboratory modules, industrial analyzers, and legacy measurement platforms. The verified manufacturer information confirms rail-to-rail output swing and 2.7 V to 12 V supply operation, allowing the amplifier to be evaluated in compact low-voltage instruments. Before layout approval, verify input range, gain accuracy, bandwidth, settling behavior, output loading, and temperature performance in the datasheet. Decoupling and grounding should follow the manufacturer’s recommended application guidance.
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推荐产品汇总
工程参考数据： AD623ANZ ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | AD623ARZ | AD623BNZ | AD623ARMZ |
|---|---|---|---|---|
| Package | 8-PDIP | 8-PDIP | 8-PDIP | 8-SOIC; package not yet verified as a drop-in match |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Product Type | Instrumentation amplifier | AD623-family instrumentation amplifier | AD623-family instrumentation amplifier | AD623-family instrumentation amplifier |
关键差异点
- Integrated instrumentation-amplifier function （对比 General-purpose operational amplifier)
- Single-resistor gain programming （对比 AD623ARZ)
- Single- and dual-supply operation （对比 AD623BNZ)
- Rail-to-rail output swing （对比 AD623ARMZ)
设计说明
Do not assume that a replacement orderable code is interchangeable merely because it uses the AD623 family name. Verify the exact package, pin numbering, gain equation, electrical grade, supply limits, and production status in the manufacturer datasheet. In particular, AD623A and AD623B are described in the supplied cross-reference material as having separate performance-grade columns.
Keep the sensor input path short and connect the gain-set resistor close to the appropriate AD623 pins according to the manufacturer layout guidance. Use a quiet analog ground and place supply bypass capacitors near the power pins. Poor routing around a high-impedance sensor can allow interference and parasitic capacitance to distort the small differential signal before amplification.
Design the supply rail around the confirmed 2.7 V to 12 V operating range while preserving the input common-mode and output-swing headroom required by the selected gain. Do not select the gain solely from the desired equation; verify the sensor output range, bridge excitation, output load, and ADC input range so that neither input nor output saturates under worst-case conditions.
For bridge or transducer inputs, treat the differential pair as a sensitive analog signal and minimize asymmetric routing, connector noise, and long unprotected leads. Filtering should be designed around the required measurement bandwidth rather than added arbitrarily. Confirm the AD623 noise, common-mode rejection, bandwidth, and settling specifications in the official datasheet before setting the system noise target.
合规信息
The supplied verified snippets do not state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification status for AD623ANZ. These fields remain unknown rather than assumed.
