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MS8312

Public Made by Adom

by adom

Hangzhou Ruimeng Tech Precision Op Amps, 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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MS8312

Hangzhou Ruimeng Tech · Precision Op Amps · SOP-8

MS8312 from Hangzhou Ruimeng Tech, 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 OUT A output Channel A amplifier output, rail-to-rail, short-circuit current typically ±80 mA at 5V supply.
2 -IN A input Channel A inverting input, input voltage range 0 V to Vs (VSS to VDD absolute maximum).
3 +IN A input Channel A non-inverting input, input voltage range 0 V to Vs with 1 pA maximum bias current.
4 GND power_in Negative supply / ground pin of the single-supply op amp.
5 +IN B input Channel B non-inverting input, input voltage range 0 V to Vs with 1 pA maximum bias current.
6 -IN B input Channel B inverting input, input voltage range 0 V to Vs (VSS to VDD absolute maximum).
7 OUT B output Channel B amplifier output, rail-to-rail, short-circuit current typically ±80 mA at 5V supply.
8 VCC power_in Positive supply, 2.7 V to 5.5 V operating, 6 V absolute maximum.

Key specifications

Parameter Value
Manufacturer Hangzhou Ruimeng Tech
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
Supply voltage Vs 6 V 2
Differential input voltage -6 6 V 2
Junction temperature range -65 150 ℃ 2
Operating temperature TA -40 125 ℃ 2
Storage temperature Tstg -65 150 ℃ 2
Lead temperature range 260 ℃ 2
Input offset voltage VOS 80 300 uV Vs=5V，VCM=0V to 5V 3
Input offset voltage VOS 750 uV -40℃≤T≤125℃ 3
Input bias current IB 0.2 1 pA 3
Input bias current IB 250 pA -40℃≤T≤125℃ 3
Input offset current IOS 0.1 0.5 pA 3
Input offset current IOS 75 pA -40℃≤T≤125℃ 3
Common-mode rejection ratio CMRR 85 100 dB VCM=0V to 5V 3
Common-mode rejection ratio CMRR 75 90 dB -40℃≤T≤125℃ 3
Input voltage range 0 5 V 3
Large-signal voltage gain AVO 115 120 dB RL= 2kΩ, Vo= 0.5V to 4.5V 3
Input offset voltage drift △VOS/△T 1.5 10 μV/℃ -40℃≤T≤125℃ 3
Output high voltage VOH 4.96 4.99 V IL=1mA 3
Output high voltage VOH 4.7 4.79 V IL=10mA 3
Output high voltage VOH 4.7 V -40℃≤T≤125℃ 3
Output low voltage VOL 20 40 mV IL=1mA 3
Output low voltage VOL 170 210 mV IL=10mA 3
Output low voltage VOL 290 mV -40℃≤T≤125℃ 3
Short-circuit current ISC -80 80 mA 3
Power supply rejection ratio PSRR 85 95 dB 2.7V<VCM <5.5V 4
Power supply rejection ratio PSRR 70 90 dB -40℃≤T≤125℃ 4
Quiescent current per amplifier ISY 1.8 mA -40℃≤T≤125℃ 4
Settling time to 0.01% ts 1 us 0V to 2V step,AV=1 4
1/f noise peak-to-peak en 2.3 3.5 uV f=0.1Hz to 10Hz 4
Input offset voltage VOS 80 300 uV Vs=2.7V，VCM=0V to 2.7V 5
Input offset voltage VOS 750 uV -40℃≤T≤125℃ 5
Input bias current IB 0.2 1 pA 5
Input bias current IB 250 pA -40℃≤T≤125℃ 5
Input offset current IOS 0.1 0.5 pA 5
Input offset current IOS 75 pA -40℃≤T≤125℃ 5
Common-mode rejection ratio CMRR 115 120 dB VCM=0V to 2.7V 5
Common-mode rejection ratio CMRR 70 85 dB -40℃≤T≤125℃ 5
Input voltage range 0 2.5 V 5
Large-signal voltage gain AVO 110 118 dB RL= 2kΩ, Vo= 0.5V to 2.2V 5
Input offset voltage drift △VOS/△T 1.5 10 μV/℃ -40℃≤T≤125℃ 5
Output high voltage VOH 2.6 2.66 V IL=1mA 5
Output high voltage VOH 2.6 V -40℃≤T≤125℃ 5
Output low voltage VOL 25 40 mV IL=1mA 5
Output low voltage VOL 50 mV -40℃≤T≤125℃ 5
Short-circuit current ISC -30 30 mA 5
Power supply rejection ratio PSRR 80 95 dB 2.7V<VCM <5V 6
Power supply rejection ratio PSRR 70 90 dB -40℃≤T≤125℃ 6
Quiescent current per amplifier ISY 1.5 mA -40℃≤T≤125℃ 6
Settling time to 0.01% ts 0.5 us 0V to 1V step，AV=1 6
1/f noise peak-to-peak en 2.3 3.5 uV f=0.1Hz to 10Hz 6

CAD (KiCad official)

  • Symbol: MS8312
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: ms8312-etched.step / ms8312-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ms8312.step / ms8312.glb are the bare package body.

Provenance

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

  • Datasheet: Hangzhou Ruimeng Tech datasheet (18 pp, sha256 23d2a5bcc3ad0345, retrieved 2026-10-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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