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BA4558F-E2

Public Made by Adom

by adom

ROHM Semicon Operational Amplifier, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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BA4558F-E2

ROHM Semicon · Operational Amplifier · SOP-8

BA4558F-E2 from ROHM Semicon, 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 OUT1 output Output of op-amp channel 1, which swings between the VEE and VCC supply rails.
2 -IN1 input Inverting input of channel 1; the input common-mode voltage range is VEE to VCC, with absolute maximum (VEE-0.3)～VEE+36 V.
3 +IN1 input Non-inverting input of channel 1; the first input stage is a PNP pair, so input bias current flows out of the IC (typ. 60 nA, max. 500 nA for BA4558 family).
4 VEE power_in Negative supply rail; BA4558 family operates from ±4 V to ±15 V split supply with absolute maximum VCC-VEE of 36 V.
5 +IN2 input Non-inverting input of channel 2, with the same common-mode range and PNP input stage as channel 1.
6 -IN2 input Inverting input of channel 2, with the same common-mode range limits as channel 1.
7 OUT2 output Output of op-amp channel 2, which swings between the VEE and VCC supply rails.
8 VCC power_in Positive supply rail; BA4558 family operating supply is 8 V to 30 V total (±4 V to ±15 V split) and absolute maximum VCC-VEE is 36 V.

Key specifications

Parameter Value
Manufacturer ROHM Semicon
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
Operating Supply Voltage (split supply ±4～±15 V as printed) Vopr 8 30 V 2
Operating Temperature Topr -40 85 ℃ 2
Storage Temperature Tstg -55 125 ℃ 2
Maximum Junction Temperature Tjmax 125 ℃ 2
Supply Voltage VCC-VEE 36 V 2
Differential Input Voltage Vid 36 V 2
Input Offset Voltage Vio 0.5 6 mV Rs≦10[kΩ] 2
Input Offset Current Iio 5 200 nA 2
Input Bias Current Ib 60 500 nA 2
Supply Current ICC 3 6 mA RL=∞ All Op-Amps 2
Maximum Output Voltage (RL≧10kΩ) VOM 12 14 V RL≧10[kΩ] 2
Maximum Output Voltage (RL≧2kΩ) VOM 10 13 V RL≧2[kΩ] 2
Large Single Voltage Gain AV 86 100 dB RL≧2[kΩ],VOUT=±10[V] 2
Input Common-mode Voltage Range Vicm 12 14 V 2
Common-mode Rejection Ratio CMRR 70 90 dB Rs≦10[kΩ] 2
Power Supply Rejection Ratio PSRR 76.3 90 dB Rs≦10[kΩ] 2

CAD (KiCad official)

  • Symbol: BA4558F-E2
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: ba4558f-e2-etched.step / ba4558f-e2-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ba4558f-e2.step / ba4558f-e2.glb are the bare package body.

Provenance

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

  • Datasheet: ROHM Semicon datasheet (34 pp, sha256 3aef5279c0c85b31, 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