component
TPA1286U-SO1R
Public Made by Adomby adom
3PEAK Instrumentation Amplifiers, SOP-8. Pinout reviewed by a person 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
markdownTPA1286U-SO1R
3PEAK · Instrumentation Amplifiers · SOP-8
TPA1286U-SO1R from 3PEAK, in a SOP-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 | IN- | input | Inverting/negative differential input; accepts input voltage from (V-) - 0.3V to (V+) + 0.3V with max input bias current ±1.5nA. |
| 2 | RG | passive | Gain-setting resistor connection pin 1; connect external resistor between pins 2 and 8 to set gain from 1 to 1000 using G = 1 + (49.4kΩ/RG). |
| 3 | IN+ | input | Non-inverting/positive differential input; accepts input voltage from (V-) - 0.3V to (V+) + 0.3V with max input bias current ±1.5nA. |
| 4 | REF | input | Reference input with 20kΩ internal impedance; sets DC bias level of output voltage; connect to local ground or offset voltage source. |
| 5 | OUT | output | Amplifier output with rail-to-rail capability; output swing VOH = 0.12V min and VOL = 0.05V min from respective supply rails; short-circuit current ±70mA max. |
| 6 | V- | power_in | Negative power supply; voltage range ±2V to ±18V; add 0.1µF bypass capacitor close to pin. |
| 7 | V+ | power_in | Positive power supply; voltage range ±2V to ±18V; quiescent current 3.8-4.5mA; add 0.1µF bypass capacitor close to pin. |
| 8 | RG | passive | Gain-setting resistor connection pin 2; connect external resistor between pins 2 and 8 to set gain from 1 to 1000 using G = 1 + (49.4kΩ/RG). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | 3PEAK |
| Package | SOP-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 Stage Offset Voltage | VOSI | -50 | 10 | 50 | μV | At RTI | 5 |
| Input Stage Offset Voltage Drift | VOSI | -0.2 | 0.1 | 0.2 | μV/°C | At RTI, -40°C to 125°C | 5 |
| Output Stage Offset Voltage | VOSO | -300 | 100 | 300 | μV | At RTI | 5 |
| Output Stage Offset Voltage Drift | VOSO | -0.3 | 0.2 | 0.3 | μV/°C | At RTI, -40°C to 125°C | 5 |
| Common Mode Rejection Ratio | CMRR | 80 | 100 | dB | CMRR at DC, G=1 | 5 | |
| Common Mode Rejection Ratio | CMRR | 100 | 120 | dB | CMRR at DC, G=10 | 5 | |
| Common Mode Rejection Ratio | CMRR | 110 | 130 | dB | CMRR at DC, G=100 | 5 | |
| Common Mode Rejection Ratio | CMRR | 120 | 140 | dB | CMRR at DC, G=1000 | 5 | |
| Input Bias Current | IB | 0.3 | 1.5 | nA | 5 | ||
| Input Offset Current | IOS | 0.3 | 1.5 | nA | 5 | ||
| Power Supply Rejection Ratio | PSRR | 100 | 120 | dB | G=1 | 5 | |
| Power Supply Rejection Ratio | PSRR | 110 | 130 | dB | G=10 | 5 | |
| Power Supply Rejection Ratio | PSRR | 120 | 138 | dB | G=100 | 5 | |
| Power Supply Rejection Ratio | PSRR | 130 | 140 | dB | G=1000 | 5 | |
| Gain | G | 1 | 1000 | V/V | G = 1 + (49.4 kΩ/RG) | 5 | |
| Gain Error | GE | -0.05 | 0.01 | 0.05 | % | G=1 | 5 |
| Gain Error | GE | -0.15 | 0.1 | 0.15 | % | G=10 | 5 |
| Gain Error | GE | -0.2 | 0.1 | 0.2 | % | G=100 | 5 |
| Gain Error | GE | -0.6 | 0.3 | 0.6 | % | G=1000 | 5 |
| Gain vs Temperature | G TC | 1 | 5 | ppm/°C | -40°C to 125°C, G=1 | 5 | |
| Short Circuit Current | ISC | -70 | 70 | mA | -40°C to 125°C | 6 | |
| Output Swing from Supply Rail (high) | VOH | 0.12 | 0.2 | V | -40°C to 125°C, RL = 10 kΩ | 6 | |
| Output Swing from Supply Rail (low) | VOL | 0.05 | 0.1 | V | -40°C to 125°C, RL = 10 kΩ | 6 | |
| Supply Voltage | V+ | 2 | 18 | V | Split supply ±2 V to ±18 V | 6 | |
| Quiescent Current | IQ | 3.8 | 4.5 | mA | 6 | ||
| Specified Temperature Range | -40 | 125 | °C | 6 | |||
| Supply Voltage | 40 | V | 4 | ||||
| Input Current | -10 | 10 | mA | IN+, IN- (Note 2) | 4 | ||
| Operating Temperature Range | -40 | 125 | °C | 4 | |||
| Maximum Working Junction Temperature | 150 | °C | 4 | ||||
| Storage Temperature Range | -65 | 150 | °C | 4 | |||
| Input Voltage Noise Density | en | 15 | nV/√Hz | f = 1kHz, G=10 | 5 | ||
| Input Voltage Noise (0.1 Hz to 10 Hz) | en | 1 | μV p-p | G=1 | 5 | ||
| -3dB Bandwidth | BW | 1600 | kHz | G=1 | 6 | ||
| -3dB Bandwidth | BW | 400 | kHz | G=10 | 6 | ||
| -3dB Bandwidth | BW | 100 | kHz | G=100 | 6 | ||
| -3dB Bandwidth | BW | 11 | kHz | G=1000 | 6 | ||
| Setting Time to 0.01% | ST | 2.1 | μs | G=1 | 6 | ||
| Slew Rate | SR | 5 | V/μs | G=1 | 6 | ||
| Slew Rate | SR | 2.5 | V/μs | G=100 | 6 | ||
| Reference Input Resistance | RIN | 20 | kΩ | Reference input | 5 | ||
| Thermal Resistance Junction-to-Ambient, 8-Pin SOP8 | θJA | 158 | °C/W | 8-Pin SOP8 | 4 | ||
| Thermal Resistance Junction-to-Case, 8-Pin SOP8 | θJC | 43 | °C/W | 8-Pin SOP8 | 4 |
CAD (KiCad official)
- Symbol:
TPA1286U-SO1R - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
tpa1286u-so1r-etched.step/tpa1286u-so1r-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tpa1286u-so1r.step/tpa1286u-so1r.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: 3PEAK datasheet (20 pp, sha256
075ffb3f5dae61c5, retrieved 2026-10-28, tier: lcsc) - 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).