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RS8557XF

Public Made by Adom

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Jiangsu RUNIC Tech Precision Op Amps, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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RS8557XF

Jiangsu RUNIC Tech · Precision Op Amps · SOT-23-5

RS8557XF from Jiangsu RUNIC Tech, in a SOT-23-5. 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 OUT output Amplifier output; the datasheet gives output swing limits of VOH 4.99 V min with RL=100 kΩ to GND and VOL 1 mV max with RL=100 kΩ to V+ at 5 V supply.
2 V- power_in Negative supply rail; the part operates from +2.7 V to +5.5 V total (V+ to V-), and supplies above 7 V (absolute maximum) can permanently damage the amplifier.
3 +IN input Non-inverting input whose common-mode range is (V-) - 0.2 V to (V+) + 0.2 V, and input terminals are diode-clamped to the rails so signals beyond 0.5 V outside the rails should be limited to 10 mA.
4 -IN input Inverting input with the same common-mode range of (V-) - 0.2 V to (V+) + 0.2 V and the same 10 mA input current limit when driven more than 0.5 V beyond the supply rails.
5 V+ power_in Positive supply rail; the part operates from +2.7 V to +5.5 V, and a 0.1 µF capacitor should be placed close across the supply pins.

Key specifications

Parameter Value
Manufacturer Jiangsu RUNIC Tech
Package SOT-23-5
Category Amplifiers/Comparators
Pins 5

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 Vos 20 50 μV VCM = Vs/2 4
Input Offset Voltage Temperature Drift dVos/dT 0.03 0.2 μV/0C 4
Power Supply Rejection Ratio PSRR 105 120 dB VS = +2.7V to +5.5V, VCM = 0 4
Common-Mode Rejection Ratio CMRR 105 120 dB (V-), 0.2V < VCM < (V+)+ 0.2V 4
Open-Loop Voltage Gain AOL 105 120 dB RL=10KΩ, VO=0.3V to 4.7V, -40°C~125°C 4
Output Voltage High VOH 4.99 4.998 V RL=100 KΩ to GND 4
Output Voltage High VOH 4.95 4.98 V RL=10 KΩ to GND 4
Output Voltage Low VOL 1 10 mV RL=100 KΩ to V+ 4
Output Voltage Low VOL 10 30 mV RL=10 KΩ to V+ 4
Quiescent Current per Amplifier IQ 650 900 uA 4
Operating Voltage Range 2.7 5.5 V 4
Input Terminals Current -10 10 mA Input terminals, see note 2 (input signals beyond rails should be current-limited to 10mA or less) 3
Storage Temperature -65 150 °C 3
Operating Temperature -40 125 °C 3
Junction Temperature 150 °C 3
Package Thermal Resistance, junction to ambient (SOT23-5) 200 °C/W @ TA = +25°C, SOT23-5 and SOT23-6 packages 3

CAD (KiCad official)

  • Symbol: RS8557XF
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: rs8557xf-etched.step / rs8557xf-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rs8557xf.step / rs8557xf.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Jiangsu RUNIC Tech datasheet (13 pp, sha256 c9d7ae209903208c, retrieved 2026-10-19, tier: lcsc)
  • 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