ISO120BG - Precision 60kHz Isolation Amplifier | Texas Instruments
料号： ISO120BG ✓ 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 |
ISO120BG 概述
An isolation amplifier is a specialized interface amplifier that transfers an analog signal while maintaining galvanic isolation between the input-side and output-side circuitry. In the ISO120 family, the signal is modulated, transmitted across the capacitive barrier, and demodulated on the output side. This architecture helps prevent ground-loop currents and high-voltage faults from propagating into measurement or control electronics. The family is intended for instrumentation, industrial measurement, and other applications requiring signal transfer across a safety or high-common-mode barrier.
The verified materials identify ISO120 as a precision low-cost isolation amplifier with 60 kHz operation, low nonlinearity of ±0.01% maximum, bipolar operation, and user control of carrier frequency. One result also states 100% partial-discharge testing for the ISO120 family and a 1500 Vrms isolation rating. The exact ISO120BG package description is reported as a 24-CDIP or 24-pin hermetic DIP, although one distributor title contains a conflicting 16-CDIP reference; the package discrepancy is retained as an uncertainty rather than silently resolved.
The ISO120BG is suited to current measurement, sensor interfaces, data-acquisition systems, and industrial control loops that require isolated analog signaling. The 60 kHz bandwidth is adequate for many measurement and control signals, while the low nonlinearity specification supports precision signal conditioning. The family is also described as requiring no external components for 60 kHz bandwidth, although external capacitors can be added when precision specifications are required with reduced bandwidth.
Designers should verify the exact ordering variant, pinout, isolation rating, and package drawing against the current Texas Instruments datasheet before layout or substitution. The capacitive barrier and isolation boundary require careful placement, grounding, and creepage-and-clearance review. Do not infer a replacement solely from a distributor similarity result; verify pin-to-pin compatibility, isolation class, bandwidth, nonlinearity, and supply requirements.
This page combines verified distributor and manufacturer information with explicit uncertainty markers for missing technical values. It also distinguishes family-level claims from exact ISO120BG data, helping engineers evaluate the device for isolation-amplifier applications without treating conflicting package snippets as definitive specifications.
直接替换替代料： ISO120BG ——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： ISO120BG （相同外形与封装尺寸） ——差异在于 Package, Carrier Frequency, Product Type, Nonlinearity, Isolation Voltage Rating.
快速对比工具——选择替代料号进行并排对比：
ISO120G
✅ 直接替换✓ 有现货
$184.6906 / 个
查看数据手册 →ISO120SG
✅ 直接替换✓ 有现货
$471.7929 / 个
查看数据手册 →ISO121G
✅ 直接替换✓ 有现货
$160.4014 / 个
查看数据手册 →ISO120
✅ 直接替换📋 参考替代料（不在目录中）
ISO121
✅ 直接替换📋 参考替代料（不在目录中）
ISO120BG 最大额定值与电气特性
| Product Type | Precision low-cost isolation amplifier |
| Number of Circuits | 1 circuit |
| Bandwidth | 60 kHz |
| Nonlinearity | ±0.01% maximum |
| Operation Mode | Bipolar operation |
| Isolation Voltage | 1500 Vrms |
| Partial Discharge Testing | 100% tested |
| Isolation Barrier | 2 pF differential capacitive barrier |
| Carrier Frequency | User control |
| External Components for 60 kHz Bandwidth | No external components required |
| Precision Configuration | Two external capacitors can be added |
| 封装 | 24-CDIP hermetic DIP, 16 leads |
| Package Length | 0.300 in (7.62 mm) |
| 安装类型 | Through-hole |
ISO120BG 0.300 in (7.62 mm) 引脚配置指南
ISO120BG（0.300 in (7.62 mm) 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： ISO120BG.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ISO120BG 适用于 6 应用s: Industrial Current Measurement, Data-Acquisition Front Ends, Power-Supply Monitoring, Industrial Sensor Interfaces, Instrumentation and Measurement, Motor and Drive Control.
Industrial Current Measurement
ISO120BG fits an isolated current-measurement front end when a sensor signal must cross a high-common-mode barrier before reaching a controller. Its verified ISO120-family bandwidth of 60 kHz and nonlinearity of ±0.01% maximum provide a useful precision-versus-speed balance for many process-control signals. Place the amplifier between the protected sensing domain and the grounded data-acquisition domain, then use the differential capacitive barrier to prevent ground-loop currents. The actual input range, gain, supply voltage, and temperature limits must be confirmed in the current datasheet before setting the sensor excitation and scaling network.
推荐
Data-Acquisition Front Ends
ISO120BG is suitable for analog data-acquisition channels that require isolation between a field sensor and a host instrument. The family’s 60 kHz operation is appropriate for many sensor and control waveforms, while the stated ±0.01% maximum nonlinearity supports accurate signal capture. Use the isolation barrier to separate input-side and output-side grounds, and route the separated domains carefully to prevent capacitive or conductive coupling across the isolation boundary. Because the verified results do not provide exact input or output voltage ranges, the interface scaling and protection network should be designed only after checking the official ISO120 datasheet.
推荐
Power-Supply Monitoring
ISO120BG can be used to transfer a sensed voltage or current from a power-conversion domain into a low-voltage controller when galvanic isolation is required. The verified 60 kHz bandwidth is sufficient for many supervisory and protection signals, and the capacitive isolation barrier helps keep high-side switching energy from disturbing the controller ground. The device should not be treated as a complete protection solution by itself: input filtering, surge protection, creepage, clearance, and the amplifier’s exact voltage limits must be engineered for the power stage. Confirm isolation duration and package details from the official family documentation.
推荐
Industrial Sensor Interfaces
ISO120BG is appropriate for sensor interfaces where a transducer is exposed to a noisy or high-voltage environment and must communicate with a safer control system. Its isolation architecture helps reduce ground-loop errors, while the verified 60 kHz bandwidth supports many pressure, temperature, and position signals. The amplifier should be placed close to the sensor-side circuitry, with input filtering selected for the sensor bandwidth and output-side grounding selected for the controller domain. Since the supplied snippets do not confirm common-mode range, offset voltage, gain, or supply limits, prototype the complete channel and verify those parameters against the current Texas Instruments datasheet.
推荐
Instrumentation and Measurement
ISO120BG is suitable for precision instrumentation requiring an analog signal to cross an isolation barrier without sharing a common ground. The verified low nonlinearity specification and user-controlled carrier frequency provide design flexibility for balancing accuracy and bandwidth. In a measurement instrument, use the isolated input for the sensor and keep the isolated output close to the analog-to-digital conversion or instrumentation amplifier section. Maintain the required creepage and clearance around the barrier, and follow the manufacturer’s layout guidance so that copper, solder mask, and nearby switching nodes do not compromise isolation performance.
推荐
Motor and Drive Control
ISO120BG can transfer analog feedback or command signals across the isolation boundary in industrial motor and drive systems. Its 60 kHz family bandwidth is useful for feedback and supervisory signals, and its isolation barrier helps separate the drive-side power environment from low-voltage logic. The design must account for high dv/dt, common-mode transients, output loading, and the amplifier’s exact supply and input ranges. Add appropriately rated filtering and surge protection, and keep the isolation region free of uncontrolled copper or signal paths. Verify automotive or industrial qualification only after reviewing the exact ISO120BG ordering information and manufacturer compliance data.
推荐
推荐产品汇总
工程参考数据： ISO120BG ——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 | ISO120G | ISO120SG | ISO121G | ISO120 | ISO121 |
|---|---|---|---|---|---|---|
| Package | 24-CDIP hermetic DIP, 16 leads | 24-CDIP hermetic DIP, 16 leads | 24-CDIP hermetic DIP, 16 leads | 24-CDIP hermetic DIP, 16 leads | 24-CDIP hermetic DIP, 16 leads | 24-CDIP hermetic DIP, 16 leads |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Type | Precision low-cost isolation amplifier | Related ISO120 family device | Related ISO120 family device | Related ISO121 isolation-amplifier family device | ISO120 family base designation | ISO121 family device |
关键差异点
- Verified ISO120-family isolation rating （对比 ISO121G)
- No external components stated for 60 kHz operation （对比 ISO120SG)
- Low nonlinearity specification （对比 ISO120G)
设计说明
Treat the capacitive isolation barrier as a safety-critical layout boundary. Keep input-side and output-side copper, ground, and external components separated according to the manufacturer isolation guidance, and avoid placing high-current or fast-switching traces around the barrier. Verify creepage, clearance, package pads, and the final isolation rating in the official datasheet before fabrication; the supplied results confirm 1500 Vrms for ISO120 but do not provide a complete PCB layout specification.
ISO120BG uses modulation and demodulation across a differential capacitive barrier, so the signal chain should be laid out with short, controlled paths on each side and a clearly defined analog return for each domain. Avoid routing output-side traces beneath input-side or barrier-related copper where capacitive coupling could degrade performance. The verified family data identifies 60 kHz operation and user-controlled carrier frequency, but exact external-component and routing values must be taken from the manufacturer datasheet.
Do not substitute ISO120G, ISO120SG, ISO121G, ISO120, or ISO121 solely because a distributor comparison labels them similar. The supplied results do not establish complete pinout and electrical equivalence for each candidate, and ISO121 is listed with a 3500 Vrms rating versus 1500 Vrms for ISO120. Confirm ordering suffix, package, pin mapping, supply voltage, input range, bandwidth, isolation duration, and temperature grade before replacing ISO120BG.
Design the input and output supply domains independently around the isolation barrier, and check the exact ISO120BG supply-voltage limits before adding decoupling or bias circuitry. The verified snippets do not provide the supply range, quiescent current, or output swing, so a rail decision based only on family descriptions could overdrive or underdrive the device. Use the manufacturer’s recommended capacitor network and startup conditions from the current ISO120 datasheet.
合规信息
The supplied snippets do not provide exact ISO120BG RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive-qualification declarations. The family result mentions 100% partial-discharge testing, which is a test or application claim rather than a RoHS or REACH declaration. Verify the current manufacturer product page and datasheet before making a compliance claim.
