ISO103B - Internally Powered Isolation Amplifier | Texas Instruments
料号： ISO103B ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $190.39 | $190.39 |
| 10 | $190.39 | $1,903.90 |
| 100 | $190.39 | $19,039.00 |
| 500 | $190.39 | $95,195.00 |
| 1,000 | $190.39 | $190,390.00 |
ISO103B 概述
An isolation amplifier is a type of instrumentation amplifier that transfers a signal across a galvanic barrier while preventing conductive current from flowing between the input and output domains. This protects sensitive measurement equipment from high common-mode voltages, ground faults, and potentially hazardous electrical environments. The ISO103B belongs to the broader signal-chain and isolation-IC hierarchy rather than a conventional non-isolated operational amplifier.
Key features include integrated signal and power handling in one double-wide, 0.6-inch side-brazed package; 5600 Vpk test voltage; 1500 Vrms continuous AC barrier rating; and a specified 20 kHz small-signal and full-power bandwidth. The internally powered architecture simplifies system design by reducing the number of external isolation-supply components. The 16-terminal CDIP package is intended for through-hole industrial and laboratory equipment.
Technically, the device combines an isolated input stage, isolation barrier, and output amplifier. Its bandwidth limits the fastest transient and signal behavior, while its continuous barrier rating addresses sustained AC isolation rather than only a short-duration production test. Designers must consider the complete isolation path, creepage, clearance, barrier insulation, and the datasheet pinout before applying the part to a high-voltage installation.
Typical uses include current and voltage measurement, process-control instrumentation, data acquisition, power-supply feedback isolation, laboratory signal conditioning, and industrial sensor interfaces. The 20 kHz bandwidth is appropriate for many measurement signals but not for high-frequency communications or waveform systems requiring greater bandwidth.
A critical design consideration is to preserve the intended isolation barrier and avoid unintended copper bridges or leakage paths. PCB layout, creepage, clearance, input filtering, grounding, and the package’s mechanical orientation must be reviewed against the manufacturer datasheet.
This page consolidates verified manufacturer and distributor information, package details, isolation specifications, comparison fields, and practical design guidance to support component selection without fabricating missing electrical values.
直接替换替代料： ISO103B ——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： ISO103B （相同外形与封装尺寸） ——差异在于 Mounting Type, Product Type.
快速对比工具——选择替代料号进行并排对比：
该产品暂无直接替换替代料。
请求替代料ISO103B 最大额定值与电气特性
| Product Type | Internally powered isolation amplifier |
| Circuit Count | 1 circuit |
| Small-Signal Bandwidth | 20 kHz |
| Full-Power Bandwidth | 20 kHz |
| Test Voltage | 5600 Vpk |
| Continuous AC Barrier Rating | 1500 Vrms |
| Isolation Barrier | Galvanic isolation between input and output domains |
| Power Architecture | Internally powered |
| 封装 | 16-CDIP |
| Package Construction | Double-wide 0.600-inch side-brazed package |
| 安装类型 | Through-hole |
| Terminal Count | 16 terminals |
ISO103B double-wide 0.600-inch side-brazed package 引脚配置指南
ISO103B（double-wide 0.600-inch side-brazed package 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： ISO103B.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ISO103B 适用于 6 应用s: Industrial Process Instrumentation, Data Acquisition Systems, Power-Supply Feedback Isolation, Laboratory Sensor Conditioning, Industrial Control Signal Interfaces, High-Voltage Measurement Protection.
Industrial Process Instrumentation
The ISO103B fits industrial process instrumentation where a sensor signal must be transferred across a high common-mode voltage or ground-potential difference. Its 20 kHz small-signal and full-power bandwidth supports many process signals, while the 1500 Vrms continuous AC barrier rating and 5600 Vpk test voltage address isolation requirements. Use it between a field-side sensor and a grounded controller, with input protection and filtering selected for the actual sensor. The 16-CDIP package is mechanically robust but requires through-hole layout space.
推荐
Data Acquisition Systems
The ISO103B is appropriate for a laboratory or industrial data-acquisition front end when the measured input must remain electrically separated from the acquisition electronics. A 20 kHz bandwidth is useful for general-purpose analog measurement channels rather than high-speed sampling. The internal-powered isolation architecture can simplify the isolated signal chain, while the wide input signal range should be verified against the sensor and front-end limits. Add input filtering, shielding, and calibrated grounding to prevent unwanted coupling.
推荐
Power-Supply Feedback Isolation
The ISO103B can be evaluated for power-supply feedback paths where the controller ground and output stage are at substantially different potentials. Its internally powered isolation function can reduce the number of isolation-supply components, and the 20 kHz bandwidth is suitable for many supervisory feedback loops that do not require high-frequency compensation information. Validate loop stability, propagation delay, input range, and isolation capacitance in the complete converter design before production use.
推荐
Laboratory Sensor Conditioning
The ISO103B is useful in laboratory measurement equipment that must interface a sensor to analog circuitry without sharing the same galvanic ground. The 20 kHz full-power bandwidth supports many pressure, temperature, strain, and slow dynamic measurements, provided the complete signal path does not require a faster response. The device’s isolation barrier should be combined with shielded cabling, low-leakage input protection, and careful analog grounding. Its through-hole 16-CDIP construction is practical for custom laboratory instruments but consumes substantial board area.
推荐
Industrial Control Signal Interfaces
The ISO103B can provide isolation for analog control or monitoring signals that cross between high-energy equipment and a controller. Its 5600 Vpk test voltage and 1500 Vrms continuous AC barrier rating provide the verified isolation figures needed for initial architecture selection, while the 20 kHz bandwidth is compatible with many monitoring signals. The application must still define input filtering, surge protection, fault response, and safety insulation. Avoid treating the test voltage as a substitute for a continuous working-voltage analysis.
推荐
High-Voltage Measurement Protection
The ISO103B is relevant to high-voltage measurement systems where direct conductive connection would expose the measurement electronics to hazardous or unstable potentials. Its specified isolation barrier can help separate the measured domain, but the designer must ensure that the complete assembly satisfies the required creepage, clearance, insulation, and fault-current limits. The internally powered architecture is useful for reducing system complexity, while the 20 kHz bandwidth limits it to signals whose frequency content is sufficiently low. Production validation should include dielectric, noise, and fault-condition testing.
推荐
推荐产品汇总
工程参考数据： ISO103B ——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 | ISO103 |
|---|---|---|
| Product Type | Internally powered isolation amplifier | Isolation amplifier |
| Manufacturer | Texas Instruments | Texas Instruments |
| Package | 16-CDIP | 24-CDIP |
| Pin Count | 16 terminals | 24 terminals |
| Small-Signal Bandwidth | 20 kHz | 20 kHz listed in cross-reference result |
关键差异点
- Wide specified isolation ratings （对比 ISO103)
- Internally powered isolation architecture （对比 ISO103)
- Defined measurement bandwidth （对比 ISO103)
设计说明
Treat the isolation barrier as a controlled PCB structure. Keep the input-side and output-side copper regions separated according to the manufacturer’s creepage and clearance requirements, remove accidental copper bridges, and verify the completed layout under the intended working voltage. The supplied data confirms a 1500 Vrms continuous AC barrier rating and 5600 Vpk test voltage, but those figures do not replace an application-specific insulation-safety calculation.
Do not substitute ISO103 for ISO103B without a redesign. The supplied cross-reference data describes ISO103 as a 24-CDIP part, while ISO103B is a 16-CDIP part. The differing terminal counts and package geometry invalidate a same-footprint drop-in assumption. If the functional requirements are similar, evaluate ISO103 only in a new PCB layout and against its complete manufacturer datasheet.
Keep the 20 kHz bandwidth requirement consistent with the complete signal path. Sensor lead length, input capacitance, filtering, isolation capacitance, output loading, and PCB parasitics can affect usable bandwidth and isolation performance. Add filtering close to the protected input where appropriate, and validate the assembled design with the intended source impedance and cable environment rather than relying only on the amplifier’s headline bandwidth.
合规信息
The supplied verified snippets do not establish RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification status.
