TS922AID - Dual Rail-to-Rail Op Amp | STMicroelectronics
料号： TS922AID ✓ 量产中TS922AID 概述
An operational amplifier is an analog signal-conditioning IC that amplifies the difference between two input voltages. A dual amplifier contains two independent amplifiers in one package, while a rail-to-rail input and output stage allows operation close to both supply-voltage limits. The TS922AID therefore occupies the amplifier, analog IC, and semiconductor hierarchy while serving precision audio, buffer, and low-load drive applications.
The principal features include rail-to-rail input and output capability, 80 mA output current, 9 nV/√Hz input noise, 0.005% distortion, a 4 MHz gain-bandwidth product, and a 1 V/µs slew rate. These characteristics combine low-noise signal handling with enough output drive to operate 32 low-impedance loads according to the manufacturer description.
The TS922AID uses a BiCMOS process that combines bipolar input circuitry with CMOS output stages. Its high output current is the principal architectural distinction from many general-purpose dual amplifiers, especially when the output must remain low-impedance while operating near the supply rails. The 3 V and 5 V optimization also makes it appropriate for compact, low-voltage analog systems.
Typical uses include audio preamplifier stages, active filters, sensor-conditioning circuits, low-impedance buffer applications, and portable test or measurement equipment. The dual configuration allows two related signal paths to be implemented in one package, reducing board area and simplifying dual-rail analog front ends.
For stable operation, follow the manufacturer datasheet for supply-decoupling close to the power pins and for output-load limits. Input and output common-mode ranges, input bias current, offset voltage, and exact operating-temperature limits should be checked against the specific operating point before production release.
This page organizes the manufacturer specifications, sourcing information, application guidance, and verified drop-in options for engineers evaluating the TS922AID. It also distinguishes confirmed pin-compatible choices from family members that differ in grade, package, or packaging and therefore require separate engineering review.
直接替换替代料： TS922AID ——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： TS922AID （相同外形与封装尺寸） ——差异在于 Amplifier Type.
TS922AID 最大额定值与电气特性
| Amplifier Type | Dual general-purpose operational amplifier |
| Number of Amplifiers | 2 circuits |
| Process Technology | BiCMOS |
| Rail-to-Rail Input | Yes |
| Rail-to-Rail Output | Yes |
| Optimized Supply Voltage | 3 V and 5 V |
| Maximum Supply Voltage | 12 V |
| Output Current | 80 mA |
| Low-Impedance Load Drive | 32 loads |
| Input Noise | 9 nV/√Hz |
| Distortion | 0.005% |
| Gain-Bandwidth Product | 4 MHz |
| Slew Rate | 1 V/µs |
| 封装 | 8-pin SOIC |
| 安装类型 | Surface mount |
TS922AID 8-pin soic 引脚配置指南
TS922AID（8-pin soic 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： TS922AID.
请参阅 数据手册 以查看完整引脚配置。
典型应用
TS922AID 适用于 6 应用s: Audio Preamplifier, Low-Impedance Buffer, Active Audio Filter, Portable Sensor Conditioning, Industrial Interface Signal Path, Test and Measurement Front End.
Audio Preamplifier
The TS922AID fits low-noise audio preamplifier stages because its 9 nV/√Hz input noise and 0.005% distortion support accurate signal amplification without adding substantial harmonic content. The 80 mA output current provides more drive than a typical general-purpose dual op amp when the next stage presents a moderately low impedance. Operate it from 3 V or 5 V for the conditions emphasized by STMicroelectronics, and verify output swing, stability, and load compatibility in the manufacturer datasheet.
推荐
Low-Impedance Buffer
The TS922AID is well suited to buffering sensor or logic signals into loads that could otherwise disturb source impedance. Its 80 mA output-current capability and 1 V/µs slew rate allow the output to recover quickly from capacitive loading while retaining a 4 MHz gain-bandwidth product. This makes the dual amplifier useful for two buffered channels in compact 3 V or 5 V systems. Check the maximum capacitive load and output-current limits before finalizing the PCB and load network.
推荐
Active Audio Filter
The dual TS922AID can implement two active-filter channels for audio crossover, equalization, or noise-shaping functions. Its 0.005% distortion supports low-error signal processing, while rail-to-rail input and output operation improves signal range in compact 3 V and 5 V designs. The 4 MHz gain-bandwidth product provides bandwidth for moderate-frequency filter sections, and the two channels reduce component count when identical transfer functions are required. Confirm loop-gain stability and component tolerances against the target response.
推荐
Portable Sensor Conditioning
The TS922AID can condition low-level sensor outputs in portable equipment when low noise and load drive matter more than minimum power consumption. Its 9 nV/√Hz noise reduces input-referred disturbance in a sensitive analog path, and the dual format supports two related measurements. The manufacturer describes the device for 3 V and 5 V optimization, making it appropriate for compact battery-powered instruments, although the final system must remain within the complete operating-voltage and temperature limits.
推荐
Industrial Interface Signal Path
The TS922AID can serve as the analog signal path in industrial interface equipment that requires stronger output drive than a conventional precision op amp provides. Rail-to-rail operation helps preserve usable swing near 3 V or 5 V supply limits, and the 80 mA output current can simplify driving subsequent stages or isolation-related circuitry. The 8-pin SOIC package supports conventional surface-mount assembly. Validate noise, offset, common-mode range, and temperature performance for the actual industrial environment.
推荐
Test and Measurement Front End
The TS922AID is applicable to compact test and measurement front ends where a low-noise amplifier must drive an ADC, comparator, or attenuator network. Its 9 nV/√Hz noise, 0.005% distortion, and 1 V/µs slew rate support accurate handling of small-amplitude signals, while 80 mA output current reduces sensitivity to downstream loading. The dual arrangement can accelerate two-channel instrumentation. Use careful grounding and decoupling, and verify that the selected gain and capacitive-load conditions remain stable.
推荐
推荐产品汇总
工程参考数据： TS922AID ——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 | TS922ID |
|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics |
| Package | SOIC-8 | SOIC-8 |
| Amplifier Configuration | Dual | Dual |
关键差异点
- Exceptionally strong output drive for a general-purpose dual op amp （对比 TS922ID)
- Low-noise operation supports sensitive analog signal paths （对比 TS922ID)
- Dual rail-to-rail architecture in a compact standard SOIC package （对比 TS922ID)
设计说明
Place the supply-decoupling capacitors directly beside the TS922AID power pins, with the ground-return path kept short and independent of high-current output returns. Because the device is a dual amplifier in an 8-pin SOIC, route the two channels to minimize coupling between inputs and outputs. Use a solid ground plane and place input resistors and feedback components close to the relevant amplifier pins to reduce parasitic feedback and sensitivity to board contamination.
Do not assume that rail-to-rail input and output behavior guarantees usable swing at every load. Check the manufacturer output-swing and output-current curves against the selected 3 V or 5 V supply, load resistance, and output waveform. Likewise, account for the input common-mode range when signals approach either supply rail. The 80 mA output-current capability is a maximum capability, not a continuous operating point that should be used without thermal and load analysis.
For audio, sensing, or precision filtering, terminate unused amplifier inputs in a manner consistent with the selected noise-gain configuration and avoid leaving an unused channel floating. Keep high-impedance input traces short and away from the outputs, which can develop large voltage swings at high slew rate. Evaluate the completed circuit for oscillation with realistic source capacitance, load capacitance, PCB parasitics, and external probe loading before production.
Although the TS922AID is a low-voltage analog amplifier, its 80 mA output-current capability can produce meaningful dissipation when driving a load with a substantial voltage difference. Estimated: power dissipation equals output voltage multiplied by output current; at 5 V and 20 mA, the output-stage dissipation is 0.1 W before considering internal losses. Confirm the 8-pin SOIC thermal behavior and ambient-temperature limits in the manufacturer documentation.
合规信息
Compliance attributes are not stated in the product information and must be confirmed from the manufacturer product page, material declarations, or current quality documentation before procurement.