component
OPA145IDR
Public Made by Adomby adom
Texas Instruments FET Input Amplifiers, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownOPA145IDR
Texas Instruments · FET Input Amplifiers · SOIC-8
OPA145IDR from Texas Instruments, in a SOIC-8. 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 | NC | unconnected | No internal connection; this pin can be left floating. |
| 2 | -IN | input | Inverting input of the amplifier. |
| 3 | +IN | input | Noninverting input of the amplifier; the input-voltage range includes the V- supply rail. |
| 4 | V- | power_in | Negative (lowest) power supply; in single-supply use this is the ground reference, and the input range extends down to it. |
| 5 | NC | unconnected | No internal connection; this pin can be left floating. |
| 6 | OUT | output | Amplifier output, which swings rail-to-rail. |
| 7 | V+ | power_in | Positive (highest) power supply; recommended single-supply range is 4.5 V to 36 V (page 4). |
| 8 | NC | unconnected | No internal connection; this pin can be left floating. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Amplifiers/Comparators |
| 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 (RTI), 25°C | VOS | -150 | 40 | 150 | μV | VS = ±18 V | 6 |
| Input offset voltage (RTI), 0°C to +85°C | VOS | -280 | 280 | μV | VS = ±18 V, TA = 0°C to +85°C | 6 | |
| Input offset voltage (RTI), -40°C to +125°C | VOS | -350 | 350 | μV | VS = ±18 V, TA = –40°C to +125°C | 6 | |
| Offset voltage drift, OPA145ID (D) package | dVOS/dT | -1 | 0.4 | 1 | μV/°C | VS = ±18 V, TA = 0°C to +85°C, OPA145ID and OPA145IDGK packages | 6 |
| Offset voltage drift, OPA145ID (D) package | dVOS/dT | -1.4 | 0.5 | 1.4 | μV/°C | VS = ±18 V, TA = –40°C to +125°C, OPA145ID and OPA145IDGK packages | 6 |
| Power-supply rejection ratio, OPA145ID package | PSRR | -0.3 | 0.06 | 0.3 | μV/V | VS = ±2.25 V to ±18 V, OPA145ID package | 6 |
| Power-supply rejection ratio, over temperature | PSRR | -2 | 2 | μV/V | VS = ±2.25 V to ±18 V, TA = –40°C to +125°C, OPA145 | 6 | |
| Input bias current, 25°C | IB | -10 | 2 | 10 | pA | 6 | |
| Input bias current, 0°C to +85°C | IB | -600 | 600 | pA | TA = 0°C to +85°C | 6 | |
| Input bias current, -40°C to +125°C | IB | -10 | 10 | nA | TA = –40°C to +125°C | 6 | |
| Input offset current, 25°C | IOS | -10 | 2 | 10 | pA | 6 | |
| Input offset current, 0°C to +85°C | IOS | -600 | 600 | pA | TA = 0°C to +85°C | 6 | |
| Input offset current, -40°C to +125°C | IOS | -10 | 10 | nA | TA = –40°C to +125°C | 6 | |
| Common-mode rejection ratio | CMRR | 126 | 140 | dB | VS = ±18 V, VCM = (V–) –0.1 V to (V+) – 3.5 V | 6 | |
| Common-mode rejection ratio, over temperature | CMRR | 118 | dB | VS = ±18 V, VCM = (V–) –0.1 V to (V+) – 3.5 V, TA = –40°C to +125°C | 6 | ||
| Open-loop voltage gain, OPA145ID package | AOL | 118 | 123 | dB | VO = (V–) + 0.35 V to (V+) – 0.35 V, RL = 10 kΩ, OPA145ID package only | 7 | |
| Open-loop voltage gain, RL = 2 kΩ | AOL | 106 | 110 | dB | VO = (V–) + 0.35 V to (V+) – 0.35 V, RL = 2 kΩ | 7 | |
| Open-loop voltage gain, RL = 2 kΩ, over temperature | AOL | 104 | dB | VO = (V–) + 0.35 V to (V+) – 0.35 V, RL = 2 kΩ, TA = –40°C to +125°C | 7 | ||
| Short-circuit current | ISC | -20 | 20 | mA | 7 | ||
| Voltage output swing from rail, RL = 10 kΩ | VO | 75 | mV | RL = 10 kΩ | 7 | ||
| Voltage output swing from rail, RL = 10 kΩ, over temperature | VO | 90 | mV | RL = 10 kΩ, TA = –40°C to +125°C | 7 | ||
| Voltage output swing from rail, RL = 2 kΩ | VO | 210 | mV | RL = 2 kΩ | 7 | ||
| Voltage output swing from rail, RL = 2 kΩ, over temperature, OPA145ID | VO | 250 | mV | RL = 2 kΩ, TA = –40°C to +125°C, OPA145ID | 7 | ||
| Quiescent current (per amplifier), 25°C | IQ | 445 | 475 | µA | IO = 0 mA | 7 | |
| Quiescent current (per amplifier), 0°C to +85°C | IQ | 590 | µA | TA = 0°C to +85°C | 7 | ||
| Quiescent current (per amplifier), -40°C to +125°C | IQ | 655 | µA | TA = –40°C to +125°C | 7 | ||
| Supply voltage, dual supply | VS | 20 | V | Dual supply, (V+) – (V–) | 4 | ||
| Supply voltage, single supply | VS | 40 | V | Single supply, (V+) – (V–) | 4 | ||
| Signal input pin current | I | -10 | 10 | mA | Signal input pins | 4 | |
| Operating temperature | TA | -55 | 150 | °C | Operating free-air temperature | 4 | |
| Junction temperature | TJ | 150 | °C | 4 | |||
| Storage temperature | TSTG | -65 | 150 | °C | 4 | ||
| Supply voltage, dual supply (recommended) | VS | 2.25 | 15 | 18 | V | Dual supply, (V+) – (V–) | 4 |
| Supply voltage, single supply (recommended) | VS | 4.5 | 30 | 36 | V | Single supply, (V+) – (V–) | 4 |
| Ambient temperature (recommended) | TA | -40 | 25 | 125 | °C | Operating free-air temperature | 4 |
| Junction-to-ambient thermal resistance, D (SOIC-8) | RθJA | 136 | °C/W | OPA145 D (SOIC) 8-pin package | 5 | ||
| Junction-to-case (top) thermal resistance, D (SOIC-8) | RθJC(top) | 74 | °C/W | OPA145 D (SOIC) 8-pin package | 5 | ||
| Junction-to-board thermal resistance, D (SOIC-8) | RθJB | 62 | °C/W | OPA145 D (SOIC) 8-pin package | 5 | ||
| Junction-to-top characterization parameter, D (SOIC-8) | ΨJT | 19.7 | °C/W | OPA145 D (SOIC) 8-pin package | 5 | ||
| Junction-to-board characterization parameter, D (SOIC-8) | ΨJB | 54.8 | °C/W | OPA145 D (SOIC) 8-pin package | 5 |
CAD (KiCad official)
- Symbol:
OPA145IDR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
opa145idr-etched.step/opa145idr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);opa145idr.step/opa145idr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (44 pp, sha256
a78a6ed6e2b0d410, retrieved 2026-10-10, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).