TS922IN - Dual 4MHz Rail-to-Rail Op Amp | STMicroelectronics
MPN： TS922IN ✓ 啟用中TS922IN 概覽
An operational amplifier is a high-gain, high-impedance analog signal-conditioning circuit used for voltage amplification, buffering, filtering, and closed-loop feedback control. Within the broader semiconductor hierarchy, the TS922IN is a dual precision analog amplifier, falling under the categories of operational amplifier, analog IC, and semiconductor. Its two amplifier sections can independently process signals or operate together in differential and analog signal-conditioning circuits.
Key electrical characteristics include a 4 MHz gain-bandwidth product, 1 V/µs slew rate, low noise identified as 9 nV/√Hz, and output-current capability up to 80 mA. The supported supply range is 2.7 V to 12 V, with operation optimized around 3 V and 5 V rails. Rail-to-rail input and output behavior is especially useful when signal amplitudes occupy much of the available supply-voltage range. The 80 mA output capability also permits relatively low-load-impedance drive compared with many general-purpose dual amplifiers.
The TS922 family uses a BiCMOS input stage to combine bipolar-device characteristics with CMOS power behavior. Its dual architecture saves board area by placing two amplifiers in one package. The manufacturer describes the devices as optimized and fully specified for 3 V and 5 V operation, while also identifying a wider operating range extending to 12 V. This makes the TS922IN relevant to industrial controls, sensor interfaces, audio paths, data acquisition, and general dual-amplifier designs.
Typical uses include low-level sensor conditioning, active filtering, audio preamplification, voltage buffering, and mixed-signal circuits requiring two amplifiers. The rail-to-rail output is useful when driving subsequent stages whose common-mode range is limited. The high output current can also reduce the need for an additional output-buffer stage in moderate-load applications.
Designers should verify output swing, input common-mode behavior, load stability, and noise at the actual supply voltage and operating frequency. Decoupling capacitors should be placed close to the supply pins, and unused amplifier sections should be configured according to the manufacturer datasheet rather than left floating. The 8-pin Mini DIP package also requires adequate spacing for through-hole assembly and careful handling during insertion.
This page combines manufacturer specifications, verified distributor information, package guidance, drop-in alternatives, comparison data, and practical application notes. It is intended to help engineers identify whether the TS922IN fits a 3 V or 5 V dual-amplifier design before purchasing or modifying an existing PCB.
直接替換替代品，適用於 TS922IN — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： TS922IN （相同外形與佔位） — 差異在於 Amplifier Type, Mounting Type, RoHS Status, Architecture, Gain-Bandwidth Product.
TS922AIN
✅ 直接替換📋 參考替代品（不在目錄中）
LM358N
✅ 直接替換聯絡詢價
查看資料表 →LM2902N
✅ 直接替換聯絡詢價
查看資料表 →MC1458N
✅ 直接替換📋 參考替代品（不在目錄中）
TS922IN 最大額定值與電氣特性
| Amplifier Type | Dual operational amplifier |
| Number of Channels | 2 channels |
| Architecture | BiCMOS |
| Input Type | Rail-to-rail input |
| 輸出類型 | Rail-to-rail output |
| Supply Voltage Range | 2.7 V to 12 V |
| Optimized Supply Voltage | 3 V and 5 V |
| Gain-Bandwidth Product | 4 MHz |
| Slew Rate | 1 V/µs |
| 最大輸出電流 | 80 mA |
| Input Noise Density | 9 nV/√Hz |
| Low Input Offset Voltage | 900 µV maximum for TS922A |
| ESD Internal Protection | 2 kV |
| 封裝 | 8-pin Mini DIP |
| 安裝類型 | Through-hole |
| RoHS 狀態 | unknown |
| REACH Status | unknown |
TS922IN 腳位配置
| 腳位 1 | OUTA — Amplifier A output |
| 腳位 2 | IN A- — Inverting input of amplifier A |
| 腳位 3 | IN A+ — Non-inverting input of amplifier A |
| 腳位 4 | V- — Negative supply connection |
| 腳位 5 | IN B+ — Non-inverting input of amplifier B |
| 腳位 6 | IN B- — Inverting input of amplifier B |
| 腳位 7 | OUTB — Amplifier B output |
| 腳位 8 | V+ — Positive supply connection |
典型應用
TS922IN 適用於 6 應用s: Audio Preamplifier and Signal Conditioning, Industrial Sensor Interface, Active Filtering and Signal Conditioning, Portable and Battery-Powered Electronics, Test and Measurement Buffer, Power and Control Monitoring.
Audio Preamplifier and Signal Conditioning
The TS922IN fits low-level audio preamplifier and conditioning stages because its 9 nV/√Hz input noise, 4 MHz gain-bandwidth product, and 1 V/µs slew rate provide low-noise amplification with useful bandwidth. According to the STMicroelectronics manufacturer datasheet, the rail-to-rail input and output stages also preserve signal range when the circuit operates from 3 V or 5 V. Each channel can amplify a separate audio or control signal. Its output-current capability of up to 80 mA also allows direct drive of moderate impedances, although distortion and stability at the actual load must be checked before removing a dedicated buffer stage.
推薦
Industrial Sensor Interface
The TS922IN is appropriate for buffering and amplifying industrial sensor outputs that operate near the limits of a 3 V or 5 V supply. Its rail-to-rail input stage helps process signals with small headroom, while the 4 MHz gain-bandwidth product and 1 V/µs slew rate support responsive closed-loop systems. According to the STMicroelectronics manufacturer datasheet, the device is specified across a 2.7 V-to-12 V supply range and can provide output current up to 80 mA. Use the two channels for separate sensor paths or for a gain stage followed by an active filter, while accounting for sensor noise, input bias current, and common-mode interference in the final accuracy budget.
推薦
Active Filtering and Signal Conditioning
The TS922IN can implement first- and second-order active filters when the required closed-loop bandwidth is compatible with its 4 MHz gain-bandwidth product. Its 1 V/µs slew rate reduces distortion for moderate-amplitude signals and its rail-to-rail output expands usable signal swing on 3 V or 5 V rails. According to the STMicroelectronics manufacturer datasheet, the device includes two independent amplifiers, allowing a second-order filter and an output buffer to share one package. Component tolerances, op-amp gain-bandwidth behavior, and the resulting closed-loop bandwidth should be calculated before compensation. The 80 mA output capability is useful when the filter must drive a moderate capacitive or resistive load rather than only a high-impedance measurement input.
推薦
Portable and Battery-Powered Electronics
The TS922IN is suitable for portable equipment powered from 3 V or 5 V because the manufacturer specifically optimizes and specifies the family for these rails. Its 2.7 V-to-12 V operating range allows use in systems with multiple available supply levels, while the rail-to-rail inputs and outputs improve signal utilization in low-voltage systems. According to the STMicroelectronics manufacturer datasheet, the device has a 4 MHz gain-bandwidth product, 1 V/µs slew rate, and output current up to 80 mA. Power consumption must still be evaluated because the dual amplifier can increase load current when both channels are active. Battery leakage, shutdown behavior, and the required output-load current should be included in the portable-design budget.
推薦
Test and Measurement Buffer
The TS922IN is useful as a general-purpose buffer in test and measurement front ends where the source impedance and load require more drive than a conventional low-current amplifier can provide. The STMicroelectronics manufacturer datasheet identifies output-current capability up to 80 mA, a 4 MHz gain-bandwidth product, and a 1 V/µs slew rate, giving the device adequate speed for many low-to-moderate-bandwidth measurements. Rail-to-rail input and output behavior improves flexibility at 3 V and 5 V test rails. Use one channel for input buffering and the second for gain or offset functions where appropriate. Input protection, settling time, capacitive-load stability, and the instrument’s allowable input capacitance require separate evaluation.
推薦
Power and Control Monitoring
The TS922IN can amplify control-voltage and power-monitoring signals in feedback loops where rail-to-rail sensing and adequate output drive are valuable. Its 4 MHz bandwidth supports faster correction than low-frequency general-purpose amplifiers, while the 1 V/µs slew rate improves response to moderate control-voltage changes. According to the STMicroelectronics manufacturer datasheet, operation is optimized at 3 V and 5 V, which fits many low-voltage control systems. The 80 mA output-current capability can drive a downstream control stage more effectively than a limited-output amplifier. Designers must still account for loop stability, capacitive loading, control-loop compensation, and the fact that an operational amplifier does not provide the isolation or precision of a dedicated power-management IC.
推薦
推薦產品摘要
工程參考資料，適用於 TS922IN — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TS922AIN | LM358N | LM2902N | MC1458N | TL072CP |
|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | Texas Instruments | Texas Instruments | Motorola | Texas Instruments |
| Package | 8-Mini DIP | 8-Mini DIP | 8-Mini DIP | 8-Mini DIP | 8-Mini DIP | 8-Mini DIP |
| Number of Amplifiers | 2 | 2 | 2 | 2 | 2 | 2 |
主要差異化特點
- Higher documented speed and drive capability (對比LM358N)
- Rail-to-rail input and output operation (對比TL072CP)
- Low-noise signal conditioning (對比MC1458N)
- Optimized single and dual low-voltage rails (對比LM2902N)
設計說明
Place the TS922IN close to the signals it processes and route each channel with short, low-loop-area feedback paths. Add local supply-bypass capacitance at pins 4 and 8, using the manufacturer-recommended values and dielectric from the TS922 datasheet. Keep high-current or switching-node copper physically separated from the amplifier inputs because the high-output-current capability does not eliminate susceptibility to conducted or radiated noise.
Verify output-current demand at the actual load rather than relying only on the 80 mA headline value. The output stage must also remain within its voltage-swing limits, particularly near the positive or negative supply rail. When driving a capacitive load, check the stability guidance in the official manufacturer datasheet and isolate the amplifier with a suitable resistor if necessary. Power dissipation and junction temperature should be evaluated for sustained DC loads.
Do not assume every dual op amp in an 8-pin DIP is a drop-in replacement. Confirm pin functions, supply range, input common-mode range, output swing, noise, bandwidth, stability, and offset voltage against the official data. The 900 µV maximum offset quoted in the supplied search result applies to TS922A, not explicitly to TS922IN. Also avoid leaving an unused amplifier input floating; configure it according to the manufacturer guidance.
For instrumentation or sensor interfaces, keep input traces away from power inductors, relay contacts, switching regulators, and high-current output paths. Use a continuous ground reference beneath the analog section where practical. If the TS922IN drives a long cable or other isolated load, consider input protection and a separate buffer closer to the load, since the package's 80 mA output capability does not remove cable-transmitted noise or ESD concerns.
合規資訊
No explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statement was present in the supplied verified web data. AEC-Q100 is recorded as not applicable because this is a general-purpose analog IC, not an automotive-qualified variant in the supplied evidence.