component
INA155EA
Public Made by Adomby adom
Texas Instruments Instrumentation Amplifiers, VSSOP-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
markdownINA155EA
Texas Instruments · Instrumentation Amplifiers · VSSOP-8
INA155EA from Texas Instruments, in a VSSOP-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 | RG | passive | Gain-setting resistor terminal; leave open for G=10 or connect through external resistor to pin 8 for gains between 10 and 50 V/V. |
| 2 | VIN- | power_in | Inverting differential input accepting signals within safe voltage range of (V-)-0.5V to (V+)+0.5V. |
| 3 | VIN+ | power_in | Non-inverting differential input accepting signals within safe voltage range of (V-)-0.5V to (V+)+0.5V. |
| 4 | V- | power_in | Negative supply and circuit ground reference terminal. |
| 5 | Ref | input | Output reference input terminal; must be driven by low-impedance source to maintain specified common-mode rejection and output voltage swing within 10mV of supply rails. |
| 6 | VOUT | output | Analog output providing rail-to-rail amplified signal with output voltage swing within 10mV of either supply rail. |
| 7 | V+ | power_in | Positive power supply terminal with specified operating range +2.7V to +5.5V across -55°C to +125°C temperature range. |
| 8 | RG | passive | Gain-setting resistor terminal; short directly to pin 1 for G=50 or connect external resistor between pins 1 and 8 for gains between 10 and 50 V/V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
INA155EA - Footprint:
Package_SO:VSSOP-8_2.3x2mm_P0.5mm - 3D model: VSSOP-8 (KiCad packages3D, STEP)
- 3D model files:
ina155ea-etched.step/ina155ea-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ina155ea.step/ina155ea.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (17 pp, sha256
477f3b4451cfbf8f, retrieved 2026-09-26, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).