TS922ID - Dual Rail-to-Rail Op Amp | STMicroelectronics
MPN: TS922ID ✓ ActiveTS922ID Overview
An operational amplifier is a high-gain, high-impedance analog amplifier used to amplify, buffer, compare, or filter signals. The TS922ID belongs to the operational-amplifier family within analog integrated circuits, providing two independent amplifier channels in one package. Rail-to-rail operation means the amplifier can process input and output signals close to the positive and negative supply limits, which improves utilization of the available supply voltage in mixed-signal systems.
The TS922 and TS922A family is specifically described by STMicroelectronics as a dual BiCMOS operational-amplifier family optimized and fully specified for 3 V and 5 V operation. The TS922ID also provides high output currents, allowing the device to drive low-load impedances. These characteristics make it useful in audio output stages, sensor-conditioning circuits, active filters, and low-voltage industrial or battery-powered equipment.
The TS922ID is identified as an active, RoHS-compliant, standard general-purpose amplifier with an operating temperature range of -40 °C to +125 °C. The device is supplied in an SOIC-8 package, and distributor listings identify the TS922ID as a dual amplifier with rail-to-rail operation. Because the device combines two amplifiers in one package, it can also reduce board area in designs that require two buffered or amplifying channels.
A key application consideration is that the available supply voltage and load current determine whether the output stage remains within its intended operating region. Designers should also observe the absolute maximum ratings and recommended operating conditions in the STMicroelectronics datasheet, provide appropriate bypass capacitance near the supply pins, and confirm that the connected load does not exceed the amplifier's specified drive capability.
This page combines the manufacturer datasheet, distributor inventory information, and verified cross-reference findings. It also distinguishes documented TS922ID data from parameters that require confirmation from the full datasheet or distributor inventory before production release.
Drop-in alternatives for TS922ID — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with TS922ID (same form factor and footprint) — differing in Amplifier Type, Gain-Bandwidth Product, Package, Lifecycle Status, Number of Channels.
TS922AID
✅ Drop-In📋 Reference alternative (not in catalog)
TS9221D
✅ Drop-In📋 Reference alternative (not in catalog)
TS912ID
✅ Drop-In ⚠️ Specs UnverifiedContact for price
View Datasheet →TS902ID
✅ Drop-In ⚠️ Specs UnverifiedContact for price
View Datasheet →TS922ID Maximum Ratings & Electrical Characteristics
| Amplifier Type | Standard (General Purpose) Amplifier |
| Number of Channels | 2 |
| Process Technology | BiCMOS |
| Input Type | Rail-to-Rail |
| Output Type | Rail-to-Rail |
| Optimized Supply Voltage | 3 V and 5 V |
| Output Drive Capability | High output current for low-load impedances |
| Package Type | 8-SOIC, Small Outline Integrated Circuit |
| Pin Count | 8 |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40 °C to +125 °C |
| Lifecycle Status | Active |
| RoHS Status | RoHS Compliant |
| Lead Time | 3-7 business days |
| Distributor Price from | USD 0.4680 at minimum order quantity of 100 |
| Reference Unit Price | USD 2.46000 |
TS922ID Pin Configuration
| Pin 1 | OUTA — Amplifier A output |
| Pin 2 | INA- — Amplifier A inverting input |
| Pin 3 | INA+ — Amplifier A non-inverting input |
| Pin 4 | V- — Negative supply |
| Pin 5 | INB+ — Amplifier B non-inverting input |
| Pin 6 | INB- — Amplifier B inverting input |
| Pin 7 | OUTB — Amplifier B output |
| Pin 8 | V+ — Positive supply |
Typical Applications
TS922ID is suitable for 6 applications: Low-Voltage Sensor Signal Conditioning, Audio Output Buffering, Active Filtering and Signal Conditioning, Industrial Control and Instrumentation, Battery-Powered Portable Equipment, Communications and Interface Buffering.
Low-Voltage Sensor Signal Conditioning
The TS922ID fits sensor-amplifier front ends that operate from a 3 V or 5 V rail and need input signals extending toward the supply limits. Its rail-to-rail input stage helps preserve signal swing in transducer circuits where the usable input range is a significant fraction of the supply voltage. The dual-channel configuration allows one amplifier to condition the sensor output while the second supports filtering, level shifting, or an active transducer current loop. STMicroelectronics describes the TS922 and TS922A devices as rail-to-rail dual BiCMOS operational amplifiers with high output current for driving low-load impedances. That combination is useful when the downstream stage presents a relatively heavy capacitive or resistive load, although the exact drive limits and settling behavior must be confirmed from the manufacturer datasheet for the selected gain and load.
Recommended
Audio Output Buffering
The TS922ID is a candidate for audio output stages built around low-voltage 3 V or 5 V supplies. Rail-to-rail input and output behavior helps maintain usable signal swing near the supply limits, while the high output-current capability described by STMicroelectronics is advantageous when driving a low-impedance headphone, transducer, or line-stage load. The dual SOIC-8 configuration can implement a stereo output buffer or drive one channel while the other amplifies a control signal. Designers should verify output-swing limits, large-signal bandwidth, slew rate, and distortion at the actual load before release, because the summary listings supplied for this part do not quantify those values. Decoupling and ground-return layout remain important for preserving audio-channel symmetry.
Recommended
Active Filtering and Signal Conditioning
The TS922ID's dual rail-to-rail BiCMOS architecture supports two independent amplifier stages for active filters, integrators, and general-purpose analog conditioning. A first-order filter stage can use one channel while the second provides the required inversion or buffering for a second-order or cascaded response. Operation at 3 V and 5 V makes the device suitable for compact industrial controls, battery-operated instruments, and low-voltage sensor nodes where headroom is limited. Rail-to-rail behavior supports signal excursions closer to the rails, but component tolerances, noise, gain-bandwidth product, and maximum output swing determine whether the intended filter accuracy is achievable. Confirm those parameters in the STMicroelectronics datasheet and include the amplifier's input-voltage and output-voltage limits in the design verification.
Recommended
Industrial Control and Instrumentation
The TS922ID is applicable to low-voltage industrial measurement circuits that require two channels of general-purpose amplification within a single 8-SOIC package. Its 3 V and 5 V optimization aligns with sensor interfaces, actuator drivers, and controller input stages, while the -40 °C to +125 °C listed operating range supports temperature-varying equipment. High output-current capability allows the amplifiers to drive lower-impedance interfacing circuits compared with a limited-output general-purpose op amp. For process-control and test-and-measurement designs, however, engineers must confirm offset voltage, bias current, noise, common-mode range, and stability over the intended gain. The device's active status and distributor availability make it a practical sourcing option, but production qualification should still use the manufacturer's absolute maximum ratings and recommended conditions.
Recommended
Battery-Powered Portable Equipment
The TS922ID's stated optimization for 3 V and 5 V operation supports low-energy portable systems powered from a single lithium cell or a regulated low-voltage rail. Rail-to-rail input and output stages can make more efficient use of a restricted supply range, and the dual-channel configuration may reduce board area where two buffered signals are required. The manufacturer datasheet describes the family as fully specified for 3 V and 5 V operations, which is useful when the available supply changes between operating modes. Nevertheless, portable designs must check quiescent supply current, shutdown behavior if required, noise performance, and input overvoltage tolerance. Those electrical values were not present in the supplied search data and must be obtained from the TS922 and TS922A datasheet before a battery-life budget is finalized.
Recommended
Communications and Interface Buffering
The TS922ID can buffer low-level communications and interface signals in 3 V or 5 V logic environments because its input and output stages operate rail-to-rail. The two channels in one 8-SOIC package are useful for buffering a command line and a data line, or for providing gain ahead of an ADC input where the source impedance would otherwise degrade accuracy. STMicroelectronics specifies high output current for low-load impedances, which may help when the next stage presents a capacitive input. Signal-integrity checks remain essential: the amplifier's gain-bandwidth product, slew rate, output-swing capability, noise, and stability into the actual load are not quantified in the supplied search snippets. PCB placement should keep the signal path short and provide a clean return path to reduce susceptibility to surrounding switching noise.
Recommended
Recommended Products Summary
Engineering reference data for TS922ID — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TS922AID | TS9221D | TS912ID | TS902ID |
|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | SOIC-8 | SOIC-8 | SOIC-8 | SOIC-8 | SOIC-8 |
Key Differentiators
- Explicit optimization for low-voltage 3 V and 5 V systems (vs TS9221D)
- High output-current capability for low-load impedances (vs TS912ID)
- Dual-channel integration in an 8-SOIC package (vs TS902ID)
Design Notes
Place the supply bypass capacitor close to pin 8 and the ground-return connection close to pin 4, keeping the high-current output return independent from sensitive input returns where practical. Route the two amplifier channels symmetrically when they drive stereo or differential signals. Because rail-to-rail input stages can respond to nearby switching nodes, keep clocked, digital, and power-converter traces away from the non-inverting input pins.
Design for 3 V or 5 V operation as documented by STMicroelectronics, but verify the complete recommended supply range, input common-mode limits, output swing, and absolute maximum ratings in the manufacturer datasheet. Do not treat the rail-to-rail designation as permission to exceed the input limits during startup or transient conditions. If the source can overshoot, add the necessary clamp or series impedance before the amplifier inputs.
The TS922 family's high output-current capability makes it suitable for low-load impedances, but the connected load still defines stability and bandwidth. Check the amplifier's output-current limit, capacitive-load recommendations, slew rate, and settling behavior at the intended gain. Avoid adding large capacitive loading directly to the output unless the datasheet explicitly permits it, and evaluate stability with a resistive isolation network if required.
Do not assume that every STMicroelectronics SOIC-8 dual amplifier has the same pin assignment or performance. The TS922ID, TS922AID, and TS9221D appear in verified family-comparison data, but offset, bandwidth, noise, and drive limits still require comparison. Confirm the exact ordering code, pinout, temperature grade, and electrical limits before treating a related MPN as a production substitute.
Compliance Information
RoHS-compliant status was reported by a verified component listing. REACH, halogen-free, conflict-minerals, and explicit lead-free status were not present in the supplied data. AEC-Q100 is treated as not applicable because this is a general-purpose analog amplifier and no automotive qualification was stated.
