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MS8629

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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MS8629

Hangzhou Ruimeng Tech · Precision Op Amps · SOP-8

MS8629 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 OUTA output Output of amplifier A, rail-to-rail swing.
2 -INA input Inverting input of amplifier A; input voltage range -Vs-0.3 V to +Vs+0.3 V.
3 +INA input Non-inverting input of amplifier A; input voltage range -Vs-0.3 V to +Vs+0.3 V.
4 -VS power_in Negative supply, or ground in single-supply operation.
5 +INB input Non-inverting input of amplifier B; input voltage range -Vs-0.3 V to +Vs+0.3 V.
6 -INB input Inverting input of amplifier B; input voltage range -Vs-0.3 V to +Vs+0.3 V.
7 OUTB output Output of amplifier B, rail-to-rail swing.
8 +VS power_in Positive supply, 1.8 V to 5.5 V single supply with 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
Input offset voltage VOS 2 5 μV Vs=+5V, VCM=+2.5V, Vo=+2.5V, TA=25℃ 3
Input offset voltage over temperature VOS 10 μV -40℃ ≤ TA ≤ 125℃ 3
Input offset voltage drift VOS/T 0.03 0.05 μV/℃ -40℃ ≤ TA ≤ 125℃ 3
Input bias current (MS8628/MS8629) IB 30 100 pA Vs=+5V, VCM=+2.5V, Vo=+2.5V, TA=25℃ 3
Input offset current IOS 40 200 pA Vs=+5V, VCM=+2.5V, Vo=+2.5V, TA=25℃ 3
Input offset current over temperature IOS 250 pA -40℃ ≤ TA ≤ 125℃ 3
Input voltage range 0 5 V 3
Common-mode rejection ratio CMRR 120 140 dB VCM = 0V to 5V 3
Common-mode rejection ratio over temperature CMRR 115 130 dB -40℃ ≤ TA ≤ 125℃ 3
Large-signal voltage gain AVO 127 145 dB RL=10kΩ, Vo=0.3V to 4.7V 3
Large-signal voltage gain over temperature AVO 120 135 dB -40℃ ≤ TA ≤ 125℃ 3
Output high voltage VOH 4.99 4.996 V RL = 100kΩ to -Vs 3
Output high voltage VOH 4.99 4.995 V RL = 10kΩ to -Vs 3
Output low voltage VOL 1 5 mV RL = 100kΩ to +Vs 3
Output low voltage over temperature VOL 2 5 mV -40℃ ≤ TA ≤ 125℃ 3
Output low voltage VOL 10 20 mV RL = 10kΩ to +Vs 3
Output low voltage over temperature VOL 15 20 mV -40℃ ≤ TA ≤ 125℃ 3
Short-circuit current ISC 25 50 mA Vo=2.5V, RL=10Ω to GND 3
Power supply rejection ratio PSRR 115 130 dB Vs=1.8V to 5.5V, -40℃ ≤ TA ≤ 125℃ 3
Quiescent current per amplifier IQ 0.85 1.1 mA Vo = Vs/2 3
Quiescent current per amplifier over temperature IQ 1 1.2 mA -40℃ ≤ TA ≤ 125℃ 3
Input offset voltage VOS 0.5 5 μV Vs=+2.7V, VCM=+1.35V, Vo=+1.35V, TA=25℃ 4
Input offset voltage over temperature VOS 10 μV -40℃ ≤ TA ≤ 125℃ 4
Input offset voltage drift VOS/T 0.03 0.05 μV/℃ -40℃ ≤ TA ≤ 125℃ 4
Input bias current (MS8628/MS8629) IB 30 100 pA Vs=+2.7V, VCM=+1.35V, Vo=+1.35V, TA=25℃ 4
Input offset current IOS 50 200 pA Vs=+2.7V, VCM=+1.35V, Vo=+1.35V, TA=25℃ 4
Input offset current over temperature IOS 250 pA -40℃ ≤ TA ≤ 125℃ 4
Input voltage range 0 2.7 V 4
Common-mode rejection ratio CMRR 115 130 dB VCM = 0V to 2.7V 4
Common-mode rejection ratio over temperature CMRR 110 120 dB -40℃ ≤ TA ≤ 125℃ 4
Large-signal voltage gain AVO 110 140 dB RL=10kΩ, Vo=0.3V to 2.4V 4
Large-signal voltage gain over temperature AVO 105 130 dB -40℃ ≤ TA ≤ 125℃ 4
Output high voltage VOH 2.68 2.695 V RL = 100kΩ to -Vs 4
Output high voltage VOH 2.67 2.68 V RL = 10kΩ to -Vs 4
Output low voltage VOL 1 5 mV RL = 100kΩ to +Vs 4
Output low voltage over temperature VOL 2 5 mV -40℃ ≤ TA ≤ 125℃ 4
Output low voltage VOL 10 20 mV RL = 10kΩ to +Vs 4
Output low voltage over temperature VOL 15 20 mV -40℃ ≤ TA ≤ 125℃ 4
Short-circuit current ISC 10 15 mA Vo=2.5V, RL=10Ω to GND 4
Power supply rejection ratio PSRR 115 130 dB Vs=1.8V to 5.5V, -40℃ ≤ TA ≤ 125℃ 4
Quiescent current per amplifier IQ 0.75 1 mA Vo = Vs/2 4
Quiescent current per amplifier over temperature IQ 0.9 1.2 mA -40℃ ≤ TA ≤ 125℃ 4
Supply voltage VS 6 V 2
Differential input voltage -5 5 V or supply voltage, whichever is smaller 2
Junction temperature range -65 150 C 2
Operating temperature range TA -40 125 C 2
Storage temperature range Tstg -65 150 C 2
Lead temperature (soldering) 300 C 60 s 2

CAD (KiCad official)

  • Symbol: MS8629
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: ms8629-etched.step / ms8629-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ms8629.step / ms8629.glb are the bare package body.

Provenance

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

  • Datasheet: Hangzhou Ruimeng Tech datasheet (15 pp, sha256 e58ec1c74591587d, retrieved 2026-10-18, 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