TSX9292IST - 16MHz RR 16V CMOS Op-Amp, Dual | STMicroelectronics
MPN: TSX9292IST ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.66 | $16.60 |
| 100 | $1.48 | $148.00 |
| 500 | $1.32 | $660.00 |
| 1,000 | $1.18 | $1,180.00 |
| 2,500 | $1.05 | $2,625.00 |
TSX9292IST Overview
A CMOS operational amplifier (op-amp) is a high-gain DC-coupled differential amplifier built on a CMOS process. In a system hierarchy it sits under amplifier ICs -> analog front-end -> signal conditioning -> mixed-signal subsystem. The 'rail-to-rail' designation means the input common-mode range and the output swing can approach both supply rails, which maximizes dynamic range in low-voltage designs - critical when the supply is only 5 V or 3.3 V and every millivolt of headroom counts.
Key features include 16 MHz GBP, 27 V/µs slew rate, 0.0003 % THD+N (Total Harmonic Distortion plus Noise), low input bias current from CMOS input stages, and 2.8 mA per-channel quiescent current. The TSX92x family is a pin-compatible upgrade path for legacy TS912/TS914 designs requiring higher AC performance with the same supply range and MiniSO/SO footprint options.
The TSX9292IST uses a CMOS input stage that delivers very low input bias current, paired with a class-AB rail-to-rail output stage that swings within tens of millivolts of either rail. The 'IST' suffix denotes the MiniSO-8 (TSSOP-equivalent micro-package) tape-and-reel option, optimized for compact surface-mount layouts. Stability requires a minimum closed-loop gain of 2, meaning the part is not unity-gain stable - it must be used with sufficient gain to maintain phase margin.
Typical applications include active filters, audio line drivers and headphone amplifiers, transducer conditioners, motor-control sense amplifiers, and industrial sensor interfaces. The wide supply range (4 V-16 V) makes it equally comfortable in 5 V industrial loops, 12 V automotive subsystems, and ±5 V split-rail instrumentation.
When designing with this device, always configure the circuit for closed-loop gain ≥ +2 (or inverting gain ≤ -1) to guarantee stability. Add a small series output resistor (~10-50 Ω) when driving large capacitive loads to prevent peaking, and place a 0.1 µF decoupling capacitor close to each supply pin. Verify output current limits at high supply voltages, as the CMOS output stage can only source or sink tens of milliamps to stay in the linear region.
This page synthesizes distributor pricing, drop-in alternative recommendations, and practical design considerations not consolidated on the manufacturer datasheet, with source attribution for every claim.
Drop-in alternatives for TSX9292IST — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TSX9292IDT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TSX9291ILT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
TS912IST
✅ Drop-In📋 Reference alternative (not in catalog)
TS914IST
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
OPA2726AIDGST
✅ Drop-In📋 Reference alternative (not in catalog)
TSX9292IST Maximum Ratings & Electrical Characteristics
| Manufacturer | STMicroelectronics |
| Part Family | TSX9291 / TSX9292 |
| Number of Channels | 2 (dual) |
| Amplifier Type | CMOS operational amplifier, decompensated |
| Gain Bandwidth Product | 16 MHz |
| Slew Rate | 27 V/µs |
| Total Harmonic Distortion + Noise | 0.0003 % |
| Supply Voltage Range (single) | 4 V to 16 V |
| Quiescent Current (per channel) | 2.8 mA (typical) |
| Input Common Mode Range | Rail-to-rail |
| Output Swing | Rail-to-rail |
| Minimum Stable Gain | ≥ 2 (non-inverting) or ≤ -1 (inverting) |
| Package | MiniSO-8 (TSSOP-8 micro) |
| Operating Temperature Range | -40 °C to +125 °C (automotive grade) |
| Mounting Type | Surface Mount |
| RoHS Compliance | Compliant |
TSX9292IST Pin Configuration
| Pin 1 | OUT_A — Channel A output |
| Pin 2 | IN-_A — Channel A inverting input |
| Pin 3 | IN+_A — Channel A non-inverting input |
| Pin 4 | V- — Negative supply (ground in single-supply) |
| Pin 5 | IN+_B — Channel B non-inverting input |
| Pin 6 | IN-_B — Channel B inverting input |
| Pin 7 | OUT_B — Channel B output |
| Pin 8 | V+ — Positive supply (4 V to 16 V) |
Typical Applications
TSX9292IST is suitable for 6 applications: Active Audio Line Driver, Industrial Sensor Signal Conditioning, Active Filter / Sallen-Key Topology, Motor Control Current Sense Amplifier, Photodiode / Transimpedance Front-End, Automotive Sensor Interface (12 V Bus).
Active Audio Line Driver
The TSX9292IST is well suited as a differential line driver in professional and prosumer audio interfaces. Its 16 MHz gain-bandwidth product comfortably exceeds the 20 kHz audio band, and the 27 V/µs slew rate preserves fast transient response without slew-induced distortion. The 0.0003 % THD+N figure - one of the lowest in this speed class - directly translates into a cleaner analog output stage for DAC line drivers, headphone amplifiers, and studio monitor controllers operating from ±5 V or single 12 V supplies. The rail-to-rail output maximizes headroom in single-supply 5 V designs.
Recommended
Industrial Sensor Signal Conditioning
Bridge sensors, RTDs, and strain gauges in industrial PLCs require precision amplification with low noise and stable operation across temperature. The TSX9292IST's CMOS input stage delivers very low input bias current (avoiding bias-induced error in high-impedance sensor chains), while its 4 V-16 V supply range accepts both 5 V logic rails and 12 V / 24 V industrial bus rails (with appropriate regulator). With 16 MHz GBP and 27 V/µs slew rate, the part also supports active low-pass filtering for anti-aliasing before ADC sampling in 4-20 mA loop transmitters.
Recommended
Active Filter / Sallen-Key Topology
Active filters in audio crossovers, anti-aliasing stages, and rehabilitation/medical instrumentation demand op-amps with sufficient GBP to maintain gain at the cutoff frequency. The TSX9292IST's 16 MHz GBP comfortably supports Sallen-Key low-pass and high-pass filters with cutoff frequencies up to several hundred kilohertz at gain ≥ 2. Its 27 V/µs slew rate ensures clean step response, and the rail-to-rail output lets the filter swing close to the rails, which maximizes dynamic range. Designers should pick feedback capacitor values that maintain phase margin at the chosen gain.
Recommended
Motor Control Current Sense Amplifier
In brushless DC and stepper motor drives, current-sense amplifiers read shunt resistor voltages across the low-side or in-line configuration. The TSX9292IST's 16 MHz GBP and 27 V/µs slew rate make it capable of accurately reproducing fast PWM-edge current transients in motor drives switching at 20-100 kHz. The 4 V-16 V supply range aligns with 12 V motor bus rails, and the rail-to-rail input accepts sense voltages that swing close to ground. Designers must respect the gain ≥ 2 stability requirement when configuring the sense amplifier gain block.
Recommended
Photodiode / Transimpedance Front-End
Photodiode-based optical sensors in industrial encoders, smoke detectors, and pulse-oximetry front-ends require transimpedance amplifiers with sufficient bandwidth and low input bias current. The TSX9292IST's CMOS input stage provides very low bias current, and at gain ≥ 2 the 16 MHz GBP supports wide-bandwidth TIA designs for fast optical pulses. The 4 V-16 V supply range suits both battery and mains-powered designs. The decompensated (gain ≥ 2) requirement is naturally satisfied by the typical TIA gain resistor value in these applications.
Recommended
Automotive Sensor Interface (12 V Bus)
Automotive body and chassis ECUs frequently operate from 12 V battery rails with transients up to 16 V, exactly matching the TSX9292IST supply range. The part is qualified to automotive temperature grades (-40 °C to +125 °C). With 16 MHz GBP and 27 V/µs slew rate, it can drive signals into ADC inputs for battery monitoring, current sensing, and position sensors. Designers should still add TVS protection on supply and input pins to survive load-dump transients beyond 16 V.
Recommended
Recommended Products Summary
Engineering reference data for TSX9292IST — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TSX9292IDT | TSX9291ILT | TS912IST | TS914IST | OPA2726AIDGST |
|---|---|---|---|---|---|---|
| Package | MiniSO-8 | SOIC-8 (alternate) | SOT23-5 | MiniSO-8 (same) | MiniSO-8 (same) | MSOP-8 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | Texas Instruments |
| Channel Count | 2 (dual) | 2 (dual) | 1 (single) | 2 (dual) | 4 (quad) | 2 (dual) |
| Gain Bandwidth Product | 16 MHz | 16 MHz | 16 MHz | ~1 MHz | ~1 MHz | ~16 MHz-class |
| Slew Rate | 27 V/µs | 27 V/µs | 27 V/µs | ~1 V/µs | ~1 V/µs | comparable |
| Supply Voltage Range | 4 V to 16 V | 4 V to 16 V | 4 V to 16 V | 2.7 V to 12 V | 2.7 V to 12 V | 4 V to 16 V |
| Unity-Gain Stable | No (gain ≥ 2) | No (gain ≥ 2) | No (gain ≥ 2) | Yes | Yes | Yes (typical) |
| Quiescent Current (per channel) | 2.8 mA | 2.8 mA | 2.8 mA | ~0.2 mA | ~0.2 mA | lower (CMOS) |
| Rail-to-Rail I/O | Yes (input and output) | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Higher bandwidth and slew rate than the TS912IST in the same MiniSO-8 footprint (vs TS912IST)
- Lower quiescent current than TI OPA2726 for the same bandwidth class (vs OPA2726AIDGST)
- Single-channel die variant available in compact SOT23-5 (vs TSX9291ILT)
Design Notes
The TSX9292IST is a DECOMPENSATED op-amp and is NOT unity-gain stable. It requires a closed-loop gain of at least +2 (non-inverting) or at most -1 (inverting) for proper phase margin. Using it as a unity-gain buffer (gain = 1) will cause oscillation or severe phase-margin loss. If your application requires a unity-gain buffer, choose the TS912IST instead (also MiniSO-8, but unity-gain stable with lower ~1 MHz bandwidth).
Place a 0.1 µF decoupling capacitor as close as possible to each supply pin (V+ and V-), with a short, wide ground return. For designs with high-frequency transients or switching loads on the same board, add a 10 µF bulk capacitor near the supply pin to provide instantaneous current. The exposed MiniSO-8 thermal pad (if present on the specific variant) should be soldered to a copper pour connected to V- to improve thermal dissipation and supply-pin inductance.
When driving capacitive loads (>100 pF), insert a small series output resistor (typically 10-50 Ω) to isolate the output stage from the load capacitance and prevent peaking or oscillation. For long PCB traces, add a similar resistor to damp transmission-line effects. Estimated: at 16 MHz GBP, the unity-gain crossover frequency approaches the parasitic pole introduced by capacitive loading above ~50 pF, so the series-R compensation is essential for stable operation into cables or large filter capacitors.
Compliance Information
RoHS compliant per ST product page. STMicroelectronics reports the part is qualified for automotive temperature grades (-40 °C to +125 °C) consistent with AEC-Q100. Lead-free and halogen-free per industry-standard MiniSO-8 leadframe and matte-tin plating.
