# INA148QDRQ1

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

INA148QDRQ1 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 | REF | input | Reference voltage input that sets the output reference level of the difference amplifier. |
| 2 | -IN | input | Inverting input of the difference amplifier, rated for common-mode input voltage up to ±200 V with VS = ±15 V (Continuous input voltage ±200 V, peak 0.1 s ±500 V). |
| 3 | +IN | input | Noninverting input of the difference amplifier, rated for common-mode input voltage up to ±200 V with VS = ±15 V (Continuous input voltage ±200 V, peak 0.1 s ±500 V). |
| 4 | V- | power_in | Negative supply voltage; the device operates from single supplies of 2.7 V to 36 V or dual supplies of ±1.35 V to ±18 V. |
| 5 | NC | unconnected | No connection. |
| 6 | OUT | output | Output voltage of the difference amplifier. |
| 7 | V+ | power_in | Positive supply voltage; the device operates from single supplies of 2.7 V to 36 V or dual supplies of ±1.35 V to ±18 V (supply V+ to V- absolute maximum 36 V). |
| 8 | NC | unconnected | No connection. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply voltage V+ to V- |  |  |  | 36 | V |  | 3 |
| Input voltage |  | -200 |  | 200 | V | Continuous | 3 |
| Input voltage |  | -500 |  | 500 | V | Peak (0.1 s) | 3 |
| Package thermal impedance, junction to free air |  |  |  | 97.1 | °C/W |  | 3 |
| Operating free-air temperature | TA | -40 |  | 125 | °C |  | 3 |
| Maximum operating virtual-junction temperature |  |  |  | 150 | °C |  | 3 |
| Lead temperature (soldering) |  |  |  | 300 | °C | 10 s | 3 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 3 |
| Electrostatic discharge, human-body model (HBM) | V(ESD) | -1500 |  | 1500 | V | Per AEC Q100-002 | 3 |
| Electrostatic discharge, charged-device model (CDM) | V(ESD) | -2000 |  | 2000 | V | Per AEC Q100-011 | 3 |
| Electrostatic discharge, machine model | V(ESD) | -150 |  | 150 | V |  | 3 |
| Supply voltage, single supply | VS | 2.7 |  | 36 | V | Single supply | 4 |
| Supply voltage, dual supply | VS | 1.35 |  | 18 | V | Dual supply, printed as ±1.35 V to ±18 V | 4 |
| Operating free-air temperature | TA | -40 |  | 125 | °C |  | 4 |
| Input offset voltage | VOS | -5 | 1 | 5 | mV | VCM = 0 V, VS = ±15 V | 4 |
| Input offset voltage drift | ΔVOS/ΔT | -10 |  | 10 | μV/°C | TA = -40°C to 125°C | 4 |
| Power supply ripple rejection | PSRR | -400 | 50 | 400 | μV/V | VS = ±1.35 V to ±18 V, VCM = 0 V | 4 |
| Common-mode voltage range | VCM | -200 |  | 200 | V | V+IN, V-IN = 0, VS = ±15 V | 4 |
| Common-mode voltage range | VCM | -100 |  | 80 | V | V+IN, V-IN = 0, VS = ±5 V | 4 |
| Common-mode rejection ratio | CMRR | 70 | 86 |  | dB | VS = ±15 V, VCM = -200 V to 200 V, RS = 0 Ω | 4 |
| Gain error |  | -0.075 | 0.01 | 0.075 | % | VO = (V- + 0.5) to (V+, 1.5) | 4 |
| Gain error over temperature |  | -10 | 3 | 10 | ppm/°C |  | 4 |
| Gain nonlinearity |  | -0.002 | 0.001 | 0.002 | %FSR | VO = (V- + 0.5) to (V+, 1.5), VS = ±15 V | 4 |
| Output current, short-circuit | IO | -13 |  | 13 | mA | Short-circuit current, continuous to common | 5 |
| Load capacitance | CL |  |  | 10 | nF | Stable operation | 5 |
| Supply current | IS | -300 | 260 | 300 | μA | VIN = 0, IO = 0, VS = ±15 V dual supply | 5 |
| Input offset voltage | VOS | -5 | 1 | 5 | mV | VCM = VS / 2, single supply 5 V | 5 |
| Input offset voltage drift | ΔVOS/ΔT | -10 |  | 10 | μV/°C | TA = -40°C to 125°C | 5 |
| Power supply ripple rejection | PSRR | -400 | 50 | 400 | μV/V | VS = 2.7 V to 36 V, VCM = VS / 2 | 5 |
| Common-mode voltage range | VCM | -4 |  | 75 | V | V+IN, V-IN = 0, VREF = 0.25 V | 5 |
| Common-mode voltage range | VCM | -47.5 |  | 32.5 | V | V+IN, V-IN = 0, VREF = VS / 2 | 5 |
| Common-mode rejection ratio | CMRR | 70 | 86 |  | dB | VCM = -47.5 V to 32.5 V, RS = 0 Ω | 5 |
| Gain error |  | -0.075 | 0.01 | 0.075 | % | VO = 0.5 V to 3.5 V | 5 |
| Gain error over temperature |  | -10 | 3 | 10 | ppm/°C |  | 5 |
| Output current, short-circuit | IO | -8 |  | 8 | mA | Short-circuit current, continuous to common | 5 |
| Quiescent current | IQ |  | 260 | 300 | μA | VIN = 0, IO = 0 | 5 |
| Junction-to-ambient thermal resistance | RθJA |  | 100.6 |  | °C/W |  | 4 |
| Junction-to-case (top) thermal resistance | RθJC(top) |  | 44.9 |  | °C/W |  | 4 |
| Junction-to-board thermal resistance | RθJB |  | 42.2 |  | °C/W |  | 4 |
| Junction-to-top characterization parameter | ψJT |  | 6.3 |  | °C/W |  | 4 |
| Junction-to-board characterization parameter | ψJB |  | 41.5 |  | °C/W |  | 4 |

## CAD (KiCad official)

- Symbol: `INA148QDRQ1`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ina148qdrq1-etched.step` / `ina148qdrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ina148qdrq1.step` / `ina148qdrq1.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/ina148-q1.pdf) (25 pp, sha256 `f383bb57b087fdc6`, retrieved 2026-10-30, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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/ina148qdrq1-datasheet.pdf)