# OPA2171AIDCUR

**Texas Instruments** · Operational Amplifier · VSSOP-8-0.5mm

OPA2171AIDCUR from Texas Instruments, in a VSSOP-8-0.5mm. 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 | OUT A | output | Channel A output, rail-to-rail, stable with capacitive loads up to 300pF and short-circuit current of +25/-35 mA. |
| 2 | -IN A | input | Channel A inverting input, with a common-mode range from (V-)-0.1V to (V+)-2V and input current limited to ±10 mA. |
| 3 | +IN A | input | Channel A non-inverting input, with a common-mode range from (V-)-0.1V to (V+)-2V and input current limited to ±10 mA. |
| 4 | V- | power_in | Negative supply or ground for single-supply use; total supply range is +2.7V to +36V (±1.35V to ±18V). |
| 5 | +IN B | input | Channel B non-inverting input, with a common-mode range from (V-)-0.1V to (V+)-2V and input current limited to ±10 mA. |
| 6 | -IN B | input | Channel B inverting input, with a common-mode range from (V-)-0.1V to (V+)-2V and input current limited to ±10 mA. |
| 7 | OUT B | output | Channel B output, rail-to-rail, stable with capacitive loads up to 300pF and short-circuit current of +25/-35 mA. |
| 8 | V+ | power_in | Positive supply, +2.7V to +36V total supply range; a 0.1µF bypass capacitor to ground close to the pin is recommended. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-8-0.5mm |
| Category | Operational Amplifier/Comparator |
| Pins | 8 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input offset voltage | VOS | -1.8 | 0.25 | 1.8 | mV |  | 3 |
| Input offset voltage over temperature | VOS | -2 | 0.3 | 2 | mV | over temperature range | 3 |
| Offset voltage drift | dVOS/dT | -2 | 0.3 | 2 | µV/°C |  | 3 |
| Power-supply rejection ratio | PSRR | -3 | 1 | 3 | µV/V | VS=+4V to +36V | 3 |
| Input bias current | IB | -15 | 8 | 15 | pA |  | 3 |
| Input bias current over temperature | IB | -3.5 |  | 3.5 | nA | over temperature range | 3 |
| Input offset current over temperature | IOS | -3.5 |  | 3.5 | nA | over temperature range | 3 |
| Common-mode rejection ratio | CMRR | 90 | 104 |  | dB | VS=±2V, (V-)-0.1V<VCM<(V+)-2V | 3 |
| Common-mode rejection ratio | CMRR | 104 | 120 |  | dB | VS=±18V, (V-)-0.1V<VCM<(V+)-2V | 3 |
| Open-loop voltage gain | AOL | 110 | 130 |  | dB | VS=+4V to +36V, (V-)+0.35V<VO<(V+)-0.35V | 3 |
| Specified supply voltage range | VS | 2.7 |  | 36 | V |  | 3 |
| Quiescent current per amplifier | IQ |  | 475 | 595 | µA | IO=0A | 3 |
| Quiescent current per amplifier over temperature | IQ |  |  | 650 | µA | IO=0A, over temperature range | 3 |
| Specified temperature range |  | -40 |  | 125 | °C |  | 3 |
| Operating temperature range |  | -55 |  | 150 | °C |  | 3 |
| Supply voltage |  | -20 |  | 20 | V |  | 2 |
| Signal input terminal current |  | -10 |  | 10 | mA |  | 2 |
| Operating temperature |  | -55 |  | 150 | °C |  | 2 |
| Storage temperature |  | -65 |  | 150 | °C |  | 2 |
| Junction temperature |  |  |  | 150 | °C |  | 2 |
| ESD human body model | HBM |  |  | 4 | kV |  | 2 |
| ESD charged device model | CDM |  |  | 750 | V |  | 2 |
| Junction-to-ambient thermal resistance | θJA |  | 175.2 |  | °C/W | DCU (VSSOP) 8 pin | 4 |
| Junction-to-case (top) thermal resistance | θJC(top) |  | 74.9 |  | °C/W | DCU (VSSOP) 8 pin | 4 |
| Junction-to-board thermal resistance | θJB |  | 22.2 |  | °C/W | DCU (VSSOP) 8 pin | 4 |
| Junction-to-top characterization parameter | ψJT |  | 1.6 |  | °C/W | DCU (VSSOP) 8 pin | 4 |
| Junction-to-board characterization parameter | ψJB |  | 22.8 |  | °C/W | DCU (VSSOP) 8 pin | 4 |
| Input offset current | IOS |  | 4 |  | pA |  | 3 |
| Channel separation, DC |  |  | 5 |  | µV/V | DC | 3 |
| Input voltage noise |  |  | 3 |  | µVPP | f=0.1Hz to 10Hz | 3 |
| Input voltage noise density | en |  | 25 |  | nV/√Hz | f=100Hz | 3 |
| Input voltage noise density | en |  | 14 |  | nV/√Hz | f=1kHz | 3 |
| Gain-bandwidth product | GBP |  | 3 |  | MHz |  | 3 |
| Slew rate | SR |  | 1.5 |  | V/µs | G=+1 | 3 |
| Settling time to 0.1% | tS |  | 6 |  | µs | VS=±18V, G=+1, 10V step | 3 |
| Settling time to 0.01% | tS |  | 10 |  | µs | VS=±18V, G=+1, 10V step | 3 |
| Overload recovery time |  |  | 2 |  | µs | VIN × gain > VS | 3 |
| Total harmonic distortion + noise | THD+N |  | 0.0002 |  | % | G=+1, f=1kHz, VO=3VRMS | 3 |
| Voltage output swing from rail | VO |  | 30 |  | mV | VS=5V, RL=10kΩ | 3 |
| Open-loop output resistance | RO |  | 150 |  | Ω | f=1MHz, IO=0A | 3 |

## CAD (KiCad official)

- Symbol: `OPA2171AIDCUR`
- Footprint: `Package_SO:VSSOP-8_2.3x2mm_P0.5mm`
- 3D model: VSSOP-8-0.5mm (KiCad packages3D, STEP)
- 3D model files: `opa2171aidcur-etched.step` / `opa2171aidcur-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `opa2171aidcur.step` / `opa2171aidcur.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/opa2171aidcur.pdf) (39 pp, sha256 `8f797f9cda3323f1`, retrieved 2026-10-27, tier: manufacturer)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-sonnet-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/opa2171aidcur-datasheet.pdf)