TS951ID - 3MHz Rail-to-Rail Low-Power Op Amp | STMicroelectronics
部品番号: TS951ID ✓ 生産中TS951ID 概要
An operational amplifier is an analog integrated circuit that amplifies the voltage difference between its inverting and non-inverting inputs while offering high input impedance, low output impedance, and stable closed-loop behavior when feedback is applied. The TS951 belongs to the operational-amplifier hierarchy, where its BiCMOS input stage combines bipolar transistor performance with CMOS power efficiency. Rail-to-rail input and output operation extends useful signal range toward the supply rails, making the amplifier practical in low-voltage systems that cannot tolerate substantial headroom loss.
Key benefits include 3 MHz gain-bandwidth product for modest-frequency signal paths, 1 V/µs slew rate for faster large-signal transitions, and 80 dB supply rejection for reducing supply ripple that could otherwise modulate the amplified signal. The low-power operating approach is useful in portable equipment where energy efficiency and reduced heat generation are priorities. ESD protection rated at 2 kV adds handling robustness, while the compact SOIC-8 package supports conventional surface-mount assembly.
The BiCMOS architecture is appropriate for precision and general-purpose analog blocks where low quiescent consumption and rail-to-rail signal handling are more important than high-speed performance. Because this amplifier is intended for low-power rather than high-bandwidth signal chains, applications normally use moderate feedback resistors, explicit gain-setting resistors, and stable output-loading arrangements. Its broad supply capability also permits operation from 3 V and 5 V rails, although each operating point should be checked against the complete electrical limits in the manufacturer datasheet.
Typical applications include low-voltage sensor conditioning, buffered analog measurements, portable audio paths, general-purpose instrumentation, and interface buffering around higher-impedance sensors. It can also support low-frequency control or active-filter stages where the 3 MHz gain-bandwidth product provides useful bandwidth margin. In these systems, TS951ID can reduce the loading imposed on the sensor source while maintaining an output signal referenced to the available supply range.
Designers should verify input common-mode range, output swing, output-current capability, noise, and stability at the intended frequency before committing the device to a new layout. Decoupling capacitors should be placed close to the supply pins, and sensitive analog inputs should be routed away from switching nodes and high-current return paths. The input and feedback networks must also avoid excessive source resistance or capacitance that could impair stability.
This product data combines the verified STMicroelectronics family description, manufacturer datasheet, and distributor listings with practical guidance for package selection, sourcing, and analog layout. It also distinguishes electrically related family members from true drop-in choices and identifies unavailable pricing and lifecycle information rather than presenting unverified commercial figures.
ドロップイン代替品: TS951ID — 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。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: TS951ID （同一形状・フットプリント） — 相違点: Amplifier Type, Package, Input Bias Current, Optimized Supply Voltage, Supply Voltage Range.
TS954ID
✅ ドロップイン ⚠️ 仕様未検証価格はお問い合わせください
データシートを見る →TS951ID 最大定格＆電気的特性
| Amplifier Type | Single rail-to-rail operational amplifier |
| Process Technology | BiCMOS |
| Number of Circuits | 1 circuit |
| Optimized Supply Voltage | 3 V and 5 V |
| Maximum Operating Supply Voltage | 12 V |
| Gain-Bandwidth Product | 3 MHz |
| Slew Rate | 1 V/µs |
| Supply Voltage Rejection Ratio | 80 dB |
| Input Common-Mode Range | Rail to rail |
| Output Voltage Swing | Rail to rail |
| ESD Protection | 2 kV |
| Low-Consumption Operation | Specified at 3 V |
| パッケージ | 8-pin SOIC |
| 実装タイプ | Surface Mount |
TS951ID 8-pin soic ピン配置ガイド
TS951ID (8-pin soic 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: TS951ID.
詳細は データシート をご参照ください。
主な用途
TS951ID の用途: 6 件s: Low-Voltage Sensor Signal Conditioning, Portable Audio Buffering, General-Purpose Instrumentation, Low-Voltage Control and Active Filtering, Battery-Powered Analog Interface, Interface and Level Conditioning.
Low-Voltage Sensor Signal Conditioning
The TS951ID fits low-voltage sensor signal conditioning because it combines input/output rail-to-rail operation with a 3 MHz gain-bandwidth product and 1 V/µs slew rate in an 8-pin SOIC package. It can be placed between a high-impedance sensor and a measurement or control stage to reduce source loading while retaining useful signal range on a 3 V or 5 V supply. The STMicroelectronics family datasheet identifies 3 V and 5 V operation as fully specified targets. Because the supplied excerpts do not quantify input bias current, offset, or noise, precision or very-high-impedance sensors require an additional comparison against the full manufacturer electrical characteristics.
おすすめ
Portable Audio Buffering
The TS951ID is appropriate for a portable audio buffer when rail-to-rail signal handling is valuable and the channel operates below the TS951 family's approximate 3 MHz gain-bandwidth product. Its 1 V/µs slew rate provides margin for small- and moderate-level audio transitions, while operation from 3 V or 5 V rails supports compact equipment. The amplifier can isolate a source from a downstream audio network and reduce loading without introducing a switching-converter supply in the signal path. Designers should still verify output swing, output-current capability, noise, and stability against the manufacturer datasheet before using it in microphone, headphone-driver, or line-output roles.
おすすめ
General-Purpose Instrumentation
The TS951ID supports general-purpose instrumentation blocks that require a single low-power amplifier with moderate bandwidth. Its 3 MHz gain-bandwidth product is suitable for scaling and buffering lower-frequency measurement signals, while the 80 dB supply-voltage rejection ratio helps reduce modulation from supply ripple. Rail-to-rail input and output behavior gives designers more usable range than a conventional mid-rail amplifier at low supply voltages. The device can therefore be evaluated for data-acquisition front ends, panel interfaces, and general analog test circuits. Exact offset, noise, bias-current, and common-mode limits must be checked for the selected gain and source impedance.
おすすめ
Low-Voltage Control and Active Filtering
The TS951ID can be evaluated for low-voltage closed-loop control and active-filter stages where its 3 MHz gain-bandwidth product provides useful loop-bandwidth margin. With a stable feedback network, the rail-to-rail output allows useful swing on compact 3 V or 5 V control boards, while the 1 V/µs slew rate limits large-signal bandwidth. The 8-pin SOIC package simplifies assembly on mixed-signal boards. Selection must account for the actual feedback factor, capacitive loading, gain error, and output-current demand because those detailed stability and drive parameters are not present in the supplied web excerpts.
おすすめ
Battery-Powered Analog Interface
The TS951ID is well positioned for battery-powered analog interfaces because the STMicroelectronics family is explicitly described as low-power and optimized for 3 V and 5 V operation. Its rail-to-rail input and output stages help maintain usable signal range as a battery-powered rail declines, while the 1 V/µs slew rate is suitable for many low-frequency sensing paths. The part can buffer sensors, monitor a divided battery voltage, or condition an audio-related control signal without requiring a 12 V supply. Actual battery-life calculations require the datasheet quiescent-current value, which was not included in the supplied excerpts and is therefore not estimated here.
おすすめ
Interface and Level Conditioning
The TS951ID can serve as an analog interface-conditioning element between a sensor or logic-adjacent circuit and a downstream analog block. Rail-to-rail input operation allows signals to approach either supply rail, while rail-to-rail output swing provides greater usable range than a fixed mid-supply output. With a 3 MHz gain-bandwidth product, it suits moderate-speed buffers rather than high-rate digital links or video amplification. Layout should keep the device away from switching-regulator and communications nodes, and the application should include local supply bypassing plus source and feedback resistors selected for the required gain and stability.
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: TS951ID — 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 | TS952ID | TS954ID |
|---|---|---|---|
| Package | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Amplifier Type | Single rail-to-rail operational amplifier | Single rail-to-rail operational amplifier | Single rail-to-rail operational amplifier |
| Process Technology | BiCMOS | BiCMOS | BiCMOS |
| Optimized Supply Voltage | 3 V and 5 V | 3 V and 5 V | 3 V and 5 V |
| Maximum Operating Supply Voltage | 12 V | 12 V | 12 V |
| ESD Protection | 2 kV | 2 kV | 2 kV |
| Input Common-Mode Range | Rail to rail | Rail to rail | Rail to rail |
| Output Voltage Swing | Rail to rail | Rail to rail | Rail to rail |
主な差別化要因
- Verified 3 MHz gain-bandwidth product （vs TS952ID)
- Verified 1 V/µs slew rate （vs TS954ID)
- Rail-to-rail input and output operation （vs TS952ID)
設計ノート
Place the supply bypass capacitor directly beside the TS951ID power and ground pins, using the shortest possible traces. Connect the capacitor ground return to the device ground without routing through the ground of an unrelated switching or high-current section. Sensitive amplifier inputs should remain away from switching nodes, power inductors, and connector return paths. Because the TS951ID supports rail-to-rail input and output operation, layout-induced coupling near either rail can still affect accuracy even when the source signal is nominally within range.
Do not treat the TS951ID, TS952ID, and TS954ID family relationship as proof of identical electrical performance. The supplied manufacturer datasheet confirms a common rail-to-rail BiCMOS low-power family optimized for 3 V and 5 V, but the excerpts do not provide a complete comparison of gain-bandwidth product, slew rate, offset voltage, bias current, noise, or output drive. Before approving a substitution, compare those ratings, common-mode limits, output swing, stability conditions, and absolute maximum ratings at the actual supply voltage and temperature.
Choose feedback resistors that balance noise, bias-current error, bandwidth, and output loading for the intended gain. Very high source or feedback impedances can increase thermal-noise and offset contributions, while excessive capacitive loading near the output can create peaking or oscillation. Keep input traces short and use a ground reference adjacent to the amplifier where practical. For a 3 MHz gain-bandwidth device, the maximum closed-loop bandwidth still depends on noise gain, so a higher closed-loop gain substantially reduces the available signal bandwidth.
コンプライアンス情報
The supplied verified excerpts identify the manufacturer, family function, electrical highlights, package, and distribution sources but do not explicitly state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is not applicable because TS951ID is a general-purpose analog amplifier and no automotive qualification is stated.