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AD8131ARZ-REEL7

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Analog Devices Differential OpAmps, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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AD8131ARZ-REEL7

Analog Devices · Differential OpAmps · SOIC-8

AD8131ARZ-REEL7 from Analog Devices, in a SOIC-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 -DIN input Negative input; the voltage applied here is inverted at +OUT, and it is grounded for the fixed gain-of-2 configuration.
2 VOCM input Common-mode output voltage input that sets the output common-mode voltage with a 1:1 ratio (for example, 1 V dc sets the +OUT and -OUT bias to 1 V); it must stay within ±VS, and if left floating it is internally biased near midsupply.
3 V+ power_in Positive supply voltage; the absolute maximum supply rating is ±5.5 V.
4 +OUT output Positive differential output, which is inverted with respect to the voltage at -DIN.
5 -OUT output Negative differential output, which is inverted with respect to the voltage at +DIN.
6 V- power_in Negative supply voltage; the absolute maximum supply rating is ±5.5 V.
7 NC unconnected No connect; this pin is not internally connected and is left unconnected.
8 +DIN input Positive input; the voltage applied here is inverted at -OUT.

Key specifications

Parameter Value
Manufacturer Analog Devices
Package SOIC-8
Category Amplifiers
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 Resistance (single-ended input) 1.125 kΩ Single-ended input, VS = ±5 V (passive, on-chip) 3
Input Resistance (differential input) 1.5 kΩ Differential input, VS = ±5 V (passive, on-chip) 3
Input Resistance (single-ended input) 1.125 kΩ Single-ended input, VS = 5 V (passive, on-chip) 5
Input Resistance (differential input) 1.5 kΩ Differential input, VS = 5 V (passive, on-chip) 5
Input Resistance (VOCM) 120 kΩ VOCM input, VS = ±5 V 4
Input Resistance (VOCM) 30 kΩ VOCM input, VS = 5 V 6
Internal feedback resistor RF RF 1.5 kΩ Nominal value per text; no tolerance printed 16
Internal gain resistor RG RG 750 Ω Nominal value per text; no tolerance printed 16
Offset Voltage (RTO) VOS, dm -7 2 7 mV VDIN+ = VDIN− = VOCM = 0 V, VS = ±5 V 3
Offset Voltage TMIN to TMAX variation -8 8 µV/°C 3
Offset Voltage (VOCM float) VOS, dm -4 4 mV VOCM = float, VS = ±5 V 3
Offset Voltage TMIN to TMAX variation (VOCM float) -10 10 µV/°C VOCM = float, VS = ±5 V 3
Output Voltage Swing Maximum -3.6 3.6 V ΔVOUT; single-ended output, VS = ±5 V 3
Gain 1.97 2 2.03 V/V ΔVOUT, dm/ΔVIN, dm; ΔVIN, dm = ±0.5 V, VS = ±5 V 3
Input Common-Mode Voltage -7 5 V VS = ±5 V 3
Input Voltage Range (VOCM) -3.6 3.6 V VS = ±5 V 4
Input Offset Voltage (VOCM) VOS, cm -7 1.5 7 mV VOS, cm = VOUT, cm; VDIN+ = VDIN− = VOCM = 0 V, VS = ±5 V 4
Input Offset Voltage (VOCM float) VOS, cm -2.5 2.5 mV VOCM = float, VS = ±5 V 4
Gain (VOCM) 0.988 1 1.012 V/V ΔVOUT, cm/ΔVOCM; ΔVOCM = ±1 V, VS = ±5 V 4
Operating Range 1.4 5.5 V Printed as ±1.4 ± 5.5 V (dual supply, VS = ±1.4 V to ±5.5 V) 4
Quiescent Current 10.5 11.5 12.5 mA VDIN+ = VDIN− = VOCM = 0 V, VS = ±5 V 4
Power Supply Rejection Ratio -70 -56 dB ΔVOUT, dm/ΔVS; ΔVS = ±1 V, VS = ±5 V 4
Operating Temperature Range -40 125 °C 4
Input Common-Mode Voltage -1 4 V VS = 5 V, VOCM = 2.5 V 5
Offset Voltage (RTO) VOS, dm -7 3 7 mV VDIN+ = VDIN− = VOCM = 2.5 V, VS = 5 V 5
Offset Voltage TMIN to TMAX variation -8 8 µV/°C VS = 5 V, VOCM = 2.5 V 5
Offset Voltage (VOCM float) VOS, dm -4 4 mV VOCM = float, VS = 5 V 5
Offset Voltage TMIN to TMAX variation (VOCM float) -10 10 µV/°C VOCM = float, VS = 5 V 5
Output Voltage Swing Maximum 1 3.7 V ΔVOUT; single-ended output, VS = 5 V 5
Gain 1.96 2 2.04 V/V ΔVOUT, dm/ΔVIN, dm; ΔVIN, dm = ±0.5 V, VS = 5 V 5
Input Voltage Range (VOCM) 1 3.7 V VS = 5 V, VOCM = 2.5 V 6
Input Offset Voltage (VOCM) VOS, cm -12 5 12 mV VOS, cm = VOUT, cm; VDIN+ = VDIN− = VOCM = 2.5 V, VS = 5 V 6
Input Offset Voltage (VOCM float) VOS, cm -10 10 mV VOCM = float, VS = 5 V 6
Gain (VOCM) 0.985 1 1.015 V/V ΔVOUT, cm/ΔVOCM; ΔVOCM = 2.5 V ±1 V, VS = 5 V 6
Operating Range 2.7 11 V Single supply, VS = 5 V (printed 2.7 to 11 V) 6
Quiescent Current 9.25 10.25 11.25 mA VDIN+ = VDIN− = VOCM = 2.5 V, VS = 5 V 6
Power Supply Rejection Ratio -70 -56 dB ΔVOUT, dm/ΔVS; ΔVS = ±0.5 V, VS = 5 V 6
Supply Voltage -5.5 5.5 V Printed as ±5.5 V 7
Internal Power Dissipation 250 mW 7
Storage Temperature Range -65 150 °C 7
Lead Temperature 300 °C Soldering 10 sec 7
Thermal resistance, junction-to-ambient θJA 121 °C/W 8-lead SOIC, SEMI standard 4-layer board 7

CAD (KiCad official)

  • Symbol: AD8131ARZ-REEL7
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: ad8131arz-reel7-etched.step / ad8131arz-reel7-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ad8131arz-reel7.step / ad8131arz-reel7.glb are the bare package body.

Provenance

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

  • Datasheet: Analog Devices datasheet (20 pp, sha256 162eca055bc98e1f, retrieved 2026-10-29, tier: manufacturer)
  • 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