# OPA211AIDR

**Texas Instruments** · Precision OpAmps · SOIC-8

OPA211AIDR from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | NC | unconnected | No internal connection. May be left floating or tied to any voltage between V- and V+. |
| 2 | -IN | input | Inverting input of the op-amp. Common-mode input range extends to (V-)+1.5 V and up to (V+)-2 V; input bias current typ ±60 nA. |
| 3 | +IN | input | Non-inverting input of the op-amp. Common-mode input range extends to (V-)+1.5 V and up to (V+)-2 V; input bias current typ ±60 nA. |
| 4 | V- | power_in | Negative supply rail. Operates from -18 V to -2.25 V for split supplies, or 0 V (GND) for single-supply operation up to 36 V total across V+ and V-. Bypass to V+ with 0.1 µF ceramic close to the pins. |
| 5 | NC | unconnected | No internal connection. May be left floating or tied to any voltage between V- and V+. |
| 6 | OUT | output | Rail-to-rail amplifier output. Sources/sinks up to ±30 mA short-circuit; output swings to within ~600 mV of each rail at 10 mA load. Slew rate 27 V/µs. |
| 7 | V+ | power_in | Positive supply rail. Operates from +2.25 V to +18 V for split supplies, or 4.5 V to 36 V single-supply (referenced to V-). Bypass to V- with 0.1 µF ceramic close to the pins. Typical supply current 3.6 mA per channel. |
| 8 | Shutdown | input | Active-high shutdown control. Device enabled when (V-) ≤ V_SHUTDOWN ≤ (V+)-3 V; device disabled when V_SHUTDOWN ≥ (V+)-0.35 V. Reduces supply current when asserted. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Op-amp/Cmp |
| Pins | 8 |

## Ordering variants

- `OPA211AIDR`
- `OPA211AIDRAIDGK`
- `OPA211AIDRAIDGKT`
- `OPA211AIDRAIDGKR`
- `OPA211AIDRG`
- `OPA211AIDRGT`
- `OPA211AIDRGR`

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| 输入失调电压 (Input offset voltage), OPA211 | VOS | -125 | 30 | 125 | μV | VS = ±15V | 7 |
| 输入失调电压温漂 (Offset voltage drift) | dVOS/dT | -1.5 | 0.35 | 1.5 | μV/°C | VS = ±15V, TA = –40°C to +125°C | 7 |
| 输入失调电压与电源间的关系 (PSRR) | PSRR |  | 0.1 | 1 | μV/V | TA = 25°C | 7 |
| 输入失调电压与电源间的关系 (PSRR) | PSRR |  |  | 3 | μV/V | TA = –40°C to +125°C | 7 |
| 输入偏置电流 (Input bias current), OPA211 | IB | -175 | 60 | 175 | nA | VCM = 0V | 7 |
| 输入偏置电流 (Input bias current), OPA211 | IB | -200 |  | 200 | nA | VCM = 0V, TA = –40°C to +125°C | 7 |
| 输入失调电流 (Input offset current) | IOS | -100 | 25 | 100 | nA | VCM = 0V | 7 |
| 输入失调电流 (Input offset current) | IOS | -150 |  | 150 | nA | VCM = 0V, TA = –40°C to +125°C | 7 |
| 共模抑制比 (CMRR), VS ≥ ±5V | CMRR | 114 | 120 |  | dB | VS ≥ ±5V, (V–) + 2V ≤ VCM ≤ (V+) – 2V, TA = –40°C to +125°C | 7 |
| 共模抑制比 (CMRR), VS < ±5V | CMRR | 110 | 120 |  | dB | VS < ±5V, (V–) + 2V ≤ VCM ≤ (V+) – 2V, TA = –40°C to +125°C | 7 |
| 开环电压增益 (Open-loop voltage gain) | AOL | 114 | 130 |  | dB | (V–) + 0.2V ≤ VO ≤ (V+) – 0.2V, RL = 10kΩ, TA = –40°C to +125°C | 8 |
| 开环电压增益 (Open-loop voltage gain) | AOL | 110 | 114 |  | dB | (V–) + 0.6V ≤ VO ≤ (V+) – 0.6V, RL = 600Ω | 8 |
| 开环电压增益 (Open-loop voltage gain), OPA211 | AOL | 110 |  |  | dB | (V–) + 0.6V ≤ VO ≤ (V+) – 0.6V, IO ≤ 15mA, TA = –40°C to +125°C | 8 |
| 开环电压增益 (Open-loop voltage gain), OPA211 | AOL | 103 |  |  | dB | (V–) + 0.6V ≤ VO ≤ (V+) – 0.6V, 15mA < IO ≤ 30mA, TA = –40°C to +125°C | 8 |
| 关断电流 (Shutdown current) | IQ(SD) |  | 1 | 20 | μA | Shutdown (disabled) | 8 |
| 额定电压 (Supply voltage, ±VS) | VS | 2.25 |  | 18 | V | Dual supply, ±2.25V to ±18V as printed | 9 |
| 静态电流 (Quiescent current, per channel) | IQ |  | 3.6 | 4.5 | mA | IOUT = 0A | 9 |
| 静态电流 (Quiescent current, per channel) | IQ |  |  | 6 | mA | IOUT = 0A, TA = –40°C to +125°C | 9 |
| 额定温度范围 (Rated temperature range) | TA | -40 |  | 125 | °C |  | 9 |
| 温度范围 (Temperature range, second row as printed) | TA | -55 |  | 150 | °C |  | 9 |
| 结至环境热阻 (Junction-to-ambient, RθJA), OPA211 D (SOIC) | RθJA |  | 122.2 |  | °C/W | High-K board | 6 |
| 结至外壳（顶部）热阻 (RθJC(top)), OPA211 D (SOIC) | RθJC(top) |  | 62.5 |  | °C/W |  | 6 |
| 结至电路板热阻 (RθJB), OPA211 D (SOIC) | RθJB |  | 64.3 |  | °C/W |  | 6 |
| 结至顶部特征参数 (ψJT), OPA211 D (SOIC) | ψJT |  | 14.2 |  | °C/W |  | 6 |
| 结至电路板特征参数 (ψJB), OPA211 D (SOIC) | ψJB |  | 63.6 |  | °C/W |  | 6 |

## CAD (KiCad official)

- Symbol: `OPA211AIDR`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `opa211aidr-etched.step` / `opa211aidr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `opa211aidr.step` / `opa211aidr.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/opa211a.pdf) (None pp, sha256 `2b9cee692757525c`, retrieved 2026-08-17, 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:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/opa211aidr-datasheet.pdf)