OPA234E - 36V Precision Operational Amplifier | Texas Instruments
部品番号: OPA234E ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
OPA234E 概要
An operational amplifier is a voltage-feedback analog IC used to amplify the difference between two input voltages while providing high input impedance and low output impedance. The OPA234E belongs to the precision operational-amplifier hierarchy, combining low offset, low bias current, and low quiescent current for instrumentation, sensor, and signal-conditioning applications. Its dual-channel architecture reduces package count when a design needs two matched amplifier functions.
Key features include a wide supply range, low power consumption, low input bias current, and low offset voltage. The 250 uA-per-amplifier quiescent current is suitable for battery-powered and low-power systems, while the maximum 25 nA input bias current helps preserve sensor accuracy. The device is intended for precision signal conditioning where low bias and offset matter more than very high bandwidth.
The verified product data identifies OPA234E as a single circuit in an 8-VSSOP package from the distributor listing, while the related OPA234 family data describes it as a dual operational-amplifier family member. The available source does not provide a verified gain-bandwidth figure, slew rate, noise density, common-mode range, output swing, or complete pinout, so those values must be confirmed from the manufacturer datasheet before design release.
Typical applications include low-power sensor interfaces, precision current measurements, instrumentation signal conditioning, battery-powered equipment, and industrial control systems. The low quiescent current helps limit supply demand, but input bias current and offset errors still require careful source-impedance and calibration analysis.
For PCB implementation, keep input traces short, provide stable bypassing at the supply pins, and avoid routing sensitive high-impedance inputs beside switching nodes. Verify the exact VSSOP pin mapping, supply limits, input common-mode range, and output swing against the authoritative OPA234 datasheet. This page combines verified distributor descriptions, available family specifications, and engineering guidance while clearly identifying missing parameters.
This product data is synthesized from the supplied manufacturer-family and distributor sources rather than a complete manufacturer datasheet specification set.
ドロップイン代替品: OPA234E — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
OPA234
✅ ドロップイン📋 参考代替品（カタログ未掲載）
OPA2340
✅ ドロップイン📋 参考代替品（カタログ未掲載）
OPA2322AIDGKR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
OPA2314AIDGKR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
OPA234E/250G4
✅ ドロップイン📋 参考代替品（カタログ未掲載）
OPA234E 最大定格＆電気的特性
| Product Type | Precision operational amplifier |
| Number of Amplifier Circuits | 2 |
| Single-Supply Voltage Range | Up to +36 V |
| Dual-Supply Voltage Range | ±18 V |
| Specified Performance Supplies | +2.7 V, +5 V, and ±15 V |
| 静止電流 | 250 uA per amplifier |
| Maximum Input Bias Current | 25 nA |
| Maximum Offset Voltage | 100 uV |
| パッケージ | 8-VSSOP |
| 実装タイプ | Surface mount |
| Distributor Circuit Description | 1 circuit |
| Primary Function | General-purpose amplifier |
| RoHS ステータス | unknown |
| REACH Status | unknown |
OPA234E 8-vssop ピン配置ガイド
OPA234E (8-vssop パッケージ) のピン配置。 このアナログコンポーネントは、入力、出力、および電源ピンを備えています。オフセットナル、補償、イネーブルピンの設定については、メーカーのデータシートを参照してください。信号調整やアンプ回路に最適です。
詳細なピン配置データはありません: OPA234E.
詳細は データシート をご参照ください。
主な用途
OPA234E の用途: 7 件s: Low-Power Sensor Signal Conditioning, Battery-Powered Measurement Equipment, Precision Current Measurement, Industrial Control and Instrumentation, Portable Medical Sensor Interface, Audio and Low-Level Analog Front Ends, Data Acquisition Front End.
Low-Power Sensor Signal Conditioning
The OPA234E fits low-power sensor signal conditioning because the supplied family data specifies only 250 uA of quiescent current per amplifier and a maximum input bias current of 25 nA. Those characteristics help preserve weak sensor signals when the source impedance is high. Use one channel for amplification and the other for filtering or reference buffering where the signal bandwidth is modest. The design should verify common-mode range, output swing, noise, and stability from the authoritative datasheet before production release.
おすすめ
Battery-Powered Measurement Equipment
The OPA234E is suitable for battery-powered measurement equipment when supply efficiency and amplifier input current are important. Its specified 250 uA quiescent current per amplifier reduces the amplifier's contribution to total system power, while the 100 uV maximum offset supports precision DC measurements. The amplifier can process sensor or divider signals near the battery supply, but the complete datasheet must confirm the usable input and output ranges at the selected supply voltage.
おすすめ
Precision Current Measurement
OPA234E can be applied to precision current measurement when the shunt voltage is small and measurement error must be controlled. The specified maximum offset voltage of 100 uV contributes to output error after amplification, while 25 nA maximum input bias current helps reduce errors from high-impedance sensing arrangements. Use Kelvin connections and verify input common-mode limits, output swing, bias-current behavior, and temperature drift with the manufacturer datasheet.
おすすめ
Industrial Control and Instrumentation
The OPA234E is appropriate for industrial instrumentation and control loops that need low-power precision amplification rather than maximum bandwidth. Its dual-channel architecture can handle two related signal paths in one package, reducing board area. The device's 36 V single-supply capability is useful for higher-voltage industrial signal-conditioning front ends, but engineers must verify the actual input common-mode range, output swing, noise, and transient behavior for the selected operating point.
おすすめ
Portable Medical Sensor Interface
OPA234E may be considered for portable sensor interfaces where battery life and DC accuracy are priorities. The supplied 25 nA maximum input bias current and 100 uV maximum offset voltage are useful starting specifications, while 250 uA per amplifier supports low-power operation. A medical or diagnostic application requires additional validation of noise, leakage, input protection, isolation, creepage, and applicable regulatory requirements; none of those parameters were supplied here.
おすすめ
Audio and Low-Level Analog Front Ends
The OPA234E can be used in low-level audio and analog front-end circuits when low offset and low bias current are more important than wideband performance. The specified 250 uA quiescent current per amplifier helps maintain battery life in portable equipment. Check the complete datasheet for input voltage range, output swing, noise density, slew rate, and stability with the selected feedback network before using it in an audio path.
おすすめ
Data Acquisition Front End
OPA234E can serve as a low-power amplifier in a data-acquisition front end when the acquisition path requires precision around DC rather than high conversion speed. Its 100 uV maximum offset and 25 nA maximum input bias current help define the initial error budget. Use careful layout, shielding, input filtering, and calibration; verify noise, bandwidth, settling behavior, and input range from the complete manufacturer documentation.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: OPA234E — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | OPA234 | OPA2340 | OPA2322AIDGKR | OPA2314AIDGKR | OPA234E/250G4 |
|---|---|---|---|---|---|---|
| Package | 8-VSSOP | 8-VSSOP family variant; exact package requires verification | 8-VSSOP candidate; exact package requires verification | 8-VSSOP candidate; exact package requires verification | 8-VSSOP candidate; exact package requires verification | 8-VSSOP family ordering variant |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
主な差別化要因
- Low quiescent current （vs OPA2340)
- Low input bias current （vs OPA2322AIDGKR)
- Precision offset specification （vs OPA2314AIDGKR)
設計ノート
Estimated power calculation must be based on the actual supply voltage and load current. With the supplied 250 uA quiescent current per amplifier, two amplifiers consume approximately 500 uA of quiescent current before output-load current is added. Verify the complete datasheet for supply current versus voltage and temperature, then include regulator efficiency, sensor current, and amplifier output current in the system budget.
Place the supply-bypass capacitor as close as practical to the OPA234E supply pins, and keep the high-impedance input route short. Sensitive amplifier inputs should be separated from switching regulators, digital clocks, inductors, and high-current return paths. The supplied data does not include the exact pinout, so verify pin numbers, exposed-pad connections, and manufacturer-recommended layout before fabrication.
Do not select the amplifier from package name and headline current alone. The 100 uV maximum offset and 25 nA maximum bias current are important for precision DC work, but input common-mode range, output swing, noise, bandwidth, slew rate, and stability also determine whether the circuit works. Obtain the complete OPA234E datasheet and compare every required parameter before substituting or releasing the PCB.
コンプライアンス情報
The supplied search results do not provide verified RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations. The component is an operational amplifier, so AEC-Q100 qualification is not applicable based on the supplied application context.
