TS922AID - Dual Rail-to-Rail Op Amp | STMicroelectronics
MPN： TS922AID ✓ 啟用中TS922AID 概覽
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.
直接替換替代品，適用於 TS922AID — 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： TS922AID （相同外形與佔位） — 差異在於 Amplifier Type.
TS922AID 最大額定值與電氣特性
| 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 |
| 封裝 | 8-pin SOIC |
| 安裝類型 | Surface mount |
TS922AID 8-pin soic 腳位配置指南
TS922AID（8-pin soic 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： TS922AID.
請參閱 資料表 以查看完整腳位配置。
典型應用
TS922AID 適用於 6 應用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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 TS922AID — 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 | TS922ID |
|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics |
| Package | SOIC-8 | SOIC-8 |
| Amplifier Configuration | Dual | Dual |
主要差異化特點
- Exceptionally strong output drive for a general-purpose dual op amp (對比TS922ID)
- Low-noise operation supports sensitive analog signal paths (對比TS922ID)
- Dual rail-to-rail architecture in a compact standard SOIC package (對比TS922ID)
設計說明
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.
合規資訊
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.