# TSX634IPT

**STMicroelectronics** · Operational Amplifier · TSSOP-14

TSX634IPT from STMicroelectronics, in a TSSOP-14. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | OUT1 | output | Output of amplifier 1, rail-to-rail. |
| 2 | IN1- | input | Inverting input of amplifier 1, rail-to-rail with common mode range VCC- - 0.1 V to VCC+ + 0.1 V. |
| 3 | IN1+ | input | Non-inverting input of amplifier 1, rail-to-rail with common mode range VCC- - 0.1 V to VCC+ + 0.1 V. |
| 4 | VCC+ | power_in | Positive supply, 3.3 V to 16 V operating (18 V absolute maximum), with a 10 nF decoupling capacitor placed close to the pin. |
| 5 | IN2+ | input | Non-inverting input of amplifier 2, rail-to-rail with common mode range VCC- - 0.1 V to VCC+ + 0.1 V. |
| 6 | IN2- | input | Inverting input of amplifier 2, rail-to-rail with common mode range VCC- - 0.1 V to VCC+ + 0.1 V. |
| 7 | OUT2 | output | Output of amplifier 2, rail-to-rail. |
| 8 | OUT3 | output | Output of amplifier 3, rail-to-rail. |
| 9 | IN3- | input | Inverting input of amplifier 3, rail-to-rail with common mode range VCC- - 0.1 V to VCC+ + 0.1 V. |
| 10 | IN3+ | input | Non-inverting input of amplifier 3, rail-to-rail with common mode range VCC- - 0.1 V to VCC+ + 0.1 V. |
| 11 | VCC- | power_in | Negative supply, ground in single-supply operation, with a 10 nF decoupling capacitor placed close to the pin. |
| 12 | IN4+ | input | Non-inverting input of amplifier 4, rail-to-rail with common mode range VCC- - 0.1 V to VCC+ + 0.1 V. |
| 13 | IN4- | input | Inverting input of amplifier 4, rail-to-rail with common mode range VCC- - 0.1 V to VCC+ + 0.1 V. |
| 14 | OUT4 | output | Output of amplifier 4, rail-to-rail. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | TSSOP-14 |
| Category | Amplifiers/Comparators |
| Pins | 14 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage (operating range) | VCC | 3.3 |  | 16 | V |  | 4 |
| Operating free air temperature range | Toper | -40 |  | 125 | °C |  | 4 |
| Offset voltage | Vio |  |  | 1.6 | mV | T = 25 °C, VCC = 16 V | 11 |
| Offset voltage | Vio |  |  | 2.4 | mV | -40°C < T < 125 °C, VCC = 16 V | 11 |
| Offset voltage, high common mode (Vicm=VCC, RL > 1 MΩ) | Vio |  |  | 4 |  | T = 25 °C, VCC = 16 V | 11 |
| Offset voltage, high common mode (Vicm=VCC, RL > 1 MΩ) | Vio |  |  | 5 |  | -40°C < T < 125 °C, VCC = 16 V | 11 |
| Input offset voltage drift | ΔVio/ΔT |  | 1 | 8 | µV/°C | -40°C < T < 125 °C (footnote 1) | 11 |
| Input offset current | Iio |  | 1 | 100 | pA | Vout = VCC/2, T = 25 °C, VCC = 16 V (footnote 3) | 12 |
| Input offset current | Iio |  |  | 200 | pA | Vout = VCC/2, -40°C < T < 125 °C, VCC = 16 V (footnote 3) | 12 |
| Input bias current | Iib |  | 1 | 100 | pA | Vout = VCC/2, T = 25 °C, VCC = 16 V (footnote 3) | 12 |
| Input bias current | Iib |  |  | 200 | pA | Vout = VCC/2, -40°C < T < 125 °C, VCC = 16 V (footnote 3) | 12 |
| Common mode rejection ratio 1 | CMR1 | 71 | 85 |  | dB | Vicm = -0.1 V to VCC-1.65 V, Vout = VCC/2, RL > 1 MΩ, T = 25 °C | 11 |
| Common mode rejection ratio 1 | CMR1 | 68 |  |  | dB | Vicm = -0.1 V to VCC-1.65 V, Vout = VCC/2, RL > 1 MΩ, -40°C < T < 125 °C | 11 |
| Common mode rejection ratio 2 | CMR2 | 69 | 83 |  | dB | Vicm = -0.1 V to VCC+0.1 V, Vout = VCC/2, RL > 1 MΩ, T = 25 °C | 11 |
| Common mode rejection ratio 2 | CMR2 | 66 |  |  | dB | Vicm = -0.1 V to VCC+0.1 V, Vout = VCC/2, RL > 1 MΩ, -40°C < T < 125 °C | 11 |
| Common mode rejection ratio 20 log (ΔVCC/ΔVio) | SVR | 73 | 87 |  | dB | VCC = 3.3 V to 16 V, Vout = Vicm VCC/2, T = 25 °C | 11 |
| Common mode rejection ratio 20 log (ΔVCC/ΔVio) | SVR | 70 |  |  | dB | VCC = 3.3 V to 16 V, Vout = Vicm VCC/2, -40°C < T < 125 °C | 11 |
| Large signal voltage gain | Avd | 100 | 110 |  |  | Vout = 0.5 V to (VCC - 0.5 V), RL > 1 MΩ, T = 25 °C | 11 |
| Large signal voltage gain | Avd | 90 |  |  |  | Vout = 0.5 V to (VCC - 0.5 V), RL > 1 MΩ, -40°C < T < 125 °C | 11 |
| High level output voltage | VOH |  |  | 70 | mV | Vid = +1 V, VOH = VCC-Vout, RL = 10 kΩ, T = 25 °C | 11 |
| High level output voltage | VOH |  |  | 100 | mV | Vid = +1 V, VOH = VCC-Vout, RL = 10 kΩ, -40°C < T < 125 °C | 11 |
| Low level output voltage | VOL |  |  | 70 | mV | Vid = -1 V, RL = 10 kΩ, T = 25 °C | 11 |
| Low level output voltage | VOL |  |  | 100 | mV | Vid = -1 V, RL = 10 kΩ, -40°C < T < 125 °C | 11 |
| Isink | Iout | 40 | 92 |  | mA | Vout = VCC, T = 25 °C, VCC = 16 V | 12 |
| Isink | Iout | 35 |  |  | mA | Vout = VCC, -40°C < T < 125 °C, VCC = 16 V | 12 |
| Isource | Iout | 30 | 90 |  | mA | Vout = 0 V, T = 25 °C, VCC = 16 V | 12 |
| Isource | Iout | 25 |  |  | mA | Vout = 0 V, -40°C < T < 125 °C, VCC = 16 V | 12 |
| Supply current (per operator, Vout = VCC/2, RL > 1 MΩ) | ICC |  | 45 | 60 | µA | T = 25 °C, VCC = 16 V | 12 |
| Supply current (per operator, Vout = VCC/2, RL > 1 MΩ) | ICC |  |  | 60 | µA | -40°C < T < 125 °C, VCC = 16 V | 12 |
| Gain bandwidth product | GBP | 160 | 200 |  | kHz | RL = 100 kΩ, CL = 100 pF, VCC = 16 V | 12 |
| Supply voltage | VCC |  |  | 18 | V | Voltages referenced to network ground terminal | 4 |
| Input current | Iin |  |  | 10 | mA | Must be limited by a series resistor at the inputs | 4 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 4 |
| Maximum junction temperature | Tj |  |  | 160 | °C |  | 4 |
| ESD HBM: human body model | HBM |  |  | 4 | kV | 100 pF discharged through 1.5 kΩ (footnote 7) | 4 |
| ESD MM: machine model | MM |  |  | 200 | V | 200 pF capacitor, no external series resistor (footnote 8) | 4 |
| ESD CDM: charged device model | CDM |  |  | 1.3 | kV | All pins plus package charged together (footnote 9) | 4 |
| Latch-up immunity |  |  |  | 200 | mA |  | 4 |
| Thermal resistance junction to ambient (TSSOP14) | Rthja |  | 100 |  | °C/W | Typical value (footnote 6) | 4 |

## CAD (KiCad official)

- Symbol: `TSX634IPT`
- Footprint: `Package_SO:TSSOP-14_4.4x5mm_P0.65mm`
- 3D model: TSSOP-14 (KiCad packages3D, STEP)
- 3D model files: `tsx634ipt-etched.step` / `tsx634ipt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tsx634ipt.step` / `tsx634ipt.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589929174459842560) (31 pp, sha256 `b4c9ac4ba15686b3`, retrieved 2026-10-11, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/tsx634ipt-datasheet.pdf)