ISO122UE4 - Precision Isolation Amplifier | Texas Instruments
料号： ISO122UE4 ✗ 停产ISO122UE4 概述
直接替换替代料： ISO122UE4 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
该产品暂无直接替换替代料。
请求替代料ISO122UE4 最大额定值与电气特性
| Product Type | Precision isolation amplifier |
| Manufacturer | Texas Instruments |
| Isolation Architecture | Duty-cycle modulation and demodulation |
| Isolation Barrier | Differential capacitive barrier |
| Signal Transmission | Digitally transmitted across the isolation barrier |
| Package Ordering Code | UE4 |
ISO122UE4 ue4 引脚配置指南
ISO122UE4（ue4 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： ISO122UE4.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ISO122UE4 适用于 6 应用s: Industrial Sensor Signal Conditioning, Galvanically Isolated Measurement Systems, Current-Sense Amplification and Control, Medical Equipment Signal Isolation, Data Acquisition and Test Equipment, Isolated Process-Control Interfaces.
Industrial Sensor Signal Conditioning
ISO122UE4 is suitable for an isolated sensor-signal path when the design requires a precision isolation amplifier between a field-side sensor and a host-side measurement circuit. The duty-cycle modulation and demodulation architecture described in the supplied records transmits the signal across a differential capacitive barrier, which is useful when galvanic isolation is more important than simply amplifying a local voltage. The complete signal-chain design must be checked against the verified input range, gain, bandwidth, supply voltage, and isolation rating of the Texas Instruments datasheet. External filtering, input protection, and grounding should be selected only after those parameters and the application reference circuit are confirmed.
推荐
Galvanically Isolated Measurement Systems
ISO122UE4 can be considered for measurement systems that must preserve a galvanic isolation boundary between a high-side or grounded sensor and downstream control electronics. The supplied description identifies a precision isolation amplifier with duty-cycle modulation and demodulation across a differential capacitive barrier, providing a clear architectural rationale for rejecting common-mode effects at the isolation boundary. Before implementation, verify the exact isolation working voltage, transient withstand, creepage, clearance, and reinforced-versus-basic isolation requirements. PCB creepage and clearance must follow the package-specific guidance in the manufacturer datasheet, while input and output filtering should preserve the required measurement bandwidth.
推荐
Current-Sense Amplification and Control
ISO122UE4 may fit a current-sense or power-control application where the measured signal must be transferred across an isolation boundary before reaching a controller. The precision isolation-amplifier function can provide a defined analog output on the isolated side without requiring the sensor reference ground to be shared with the control domain. The supplied records do not verify gain, common-mode rejection, propagation delay, or output settling behavior, so engineers must compare those values with the current-sense signal bandwidth and controller sampling requirements. Input protection should account for possible fault conditions, while the output network must preserve signal integrity across the complete control bandwidth.
推荐
Medical Equipment Signal Isolation
ISO122UE4 is architecturally relevant to medical monitoring equipment that needs a compact isolation stage between a patient-connected front end and protected electronics. Its capacitive isolation barrier and digitally transmitted analog signal can help separate the two domains while maintaining an analog interface at each side. The supplied data does not state medical-device certification, reinforced isolation suitability, leakage-current limits, or safety-agency approvals, so it must not be treated as automatically compliant. Medical use requires verification against the applicable system safety requirements, isolation rating, creepage, clearance, component lifetime, and manufacturer application guidance before design freeze.
推荐
Data Acquisition and Test Equipment
ISO122UE4 can be evaluated for data-acquisition front ends that require an isolated analog channel for level or transducer measurements. A precision isolation amplifier allows the input circuitry to remain electrically separated from the acquisition backplane, while the isolated output can be routed to an ADC or measurement front end. Since no verified ISO122UE4 bandwidth, gain, offset, noise, or supply-current figures were supplied, system error budgets cannot be completed yet. Confirm whether the available channel bandwidth meets the required sampling rate and whether the output settling behavior supports multiplexed acquisition. Also verify package land pattern and creepage against the final high-voltage test environment.
推荐
Isolated Process-Control Interfaces
ISO122UE4 is a candidate for isolated process-control interfaces where a field transducer produces a low-level analog signal that must reach a controller across a potential ground difference. The duty-cycle modulation and demodulation approach supports transmission through a differential capacitive isolation barrier, while the external input and output stages can be tailored to the transducer and controller. Designers must verify gain accuracy, input range, bandwidth, supply tolerance, and isolation performance from the datasheet. The PCB must provide adequate copper spacing and isolation-barrier placement, and protective components should be selected to limit fault energy without degrading the sensor signal or the converter's operating range.
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推荐产品汇总
工程参考数据： ISO122UE4 ——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 | ISO124U | ISO124P | AD8230YRZ | UC7502N-2 |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices | Texas Instruments |
关键差异点
- Identifiable precision isolation-amplifier architecture （对比 ISO124P)
- Differential capacitive isolation barrier （对比 AD8230YRZ)
- Texas Instruments family comparison context （对比 UC7502N-2)
设计说明
Do not route signal traces across the isolation barrier or beneath it. Keep the barrier region free of copper where the manufacturer specifies, maintain the required creepage and clearance, and follow the ISO122-family layout and isolation-barrier recommendations. The supplied records do not provide exact spacing values, so use the current Texas Instruments datasheet and package-specific layout guidance rather than a generic PCB rule.
Separate the isolated-side and ground-side supply networks according to the manufacturer application circuit. Provide local bypass capacitors close to the supply pins, verify their voltage rating and capacitance against the datasheet, and account for the power consumed on both sides of the capacitive barrier. Estimated power calculations cannot be completed because the verified supply voltage and quiescent-current values are [DATA_NEEDED: supply voltage and quiescent current].
Do not assume that ISO124P, ISO124U, AD8230YRZ, or UC7502N-2 is a drop-in replacement merely because it appears in a comparison result. The supplied excerpts do not verify identical pinouts, packages, or key electrical ratings. For every proposed substitution, compare the manufacturer pin tables, package drawings, supply voltage, gain, bandwidth, isolation ratings, and application circuits before approving a footprint change.
合规信息
No verified compliance statements for ISO122UE4 were included in the supplied data. The lifecycle status is also unknown because the manufacturer and distributor retrievals did not provide a current status result.
