# AD8639ARZ

**Analog Devices** · Precision Op Amps · SOIC-8

AD8639ARZ 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 | OUT A | output | Channel A output with rail-to-rail swing and ±37 mA short-circuit current at 16 V supply. |
| 2 | -IN A | input | Channel A inverting input; input voltage range is -0.1 V to +14 V at 16 V supply, with current limited to 10 mA maximum. |
| 3 | +IN A | input | Channel A non-inverting input; input voltage range is -0.1 V to +14 V at 16 V supply, with current limited to 10 mA maximum. |
| 4 | V- | power_in | Negative supply or ground; the single-supply range is 5 V to 16 V (±2.5 V to ±8 V dual supply). |
| 5 | +IN B | input | Channel B non-inverting input; input voltage range is -0.1 V to +14 V at 16 V supply, with current limited to 10 mA maximum. |
| 6 | -IN B | input | Channel B inverting input; input voltage range is -0.1 V to +14 V at 16 V supply, with current limited to 10 mA maximum. |
| 7 | OUT B | output | Channel B output with rail-to-rail swing and ±37 mA short-circuit current at 16 V supply. |
| 8 | V+ | power_in | Positive supply; operation is specified from 5 V to 16 V single supply with an absolute maximum of 16 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | SOIC-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 |
|---|---|---|---|---|---|---|---|
| Offset Voltage | VOS |  | 3 | 9 | μV | 5 V table: VSY = 5 V | 3 |
| Offset Voltage | VOS |  |  | 23 | μV | 5 V table: −40°C ≤ TA ≤ +125°C | 3 |
| Input Bias Current | IB |  | 1.5 | 40 | pA | 5 V table | 3 |
| Input Bias Current | IB |  | 45 | 105 | pA | 5 V table: −40°C ≤ TA ≤ +125°C | 3 |
| Input Offset Current | IOS |  | 7 | 40 | pA | 5 V table | 3 |
| Input Offset Current | IOS |  | 16.5 | 60 | pA | 5 V table: −40°C ≤ TA ≤ +125°C | 3 |
| Input Voltage Range |  | -0.1 |  | 3 | V | 5 V table: −40°C ≤ TA ≤ +125°C | 3 |
| Common-Mode Rejection Ratio | CMRR | 118 | 133 |  | dB | 5 V table: VCM = 0 V to 3 V | 3 |
| Common-Mode Rejection Ratio | CMRR | 118 |  |  | dB | 5 V table: −40°C ≤ TA ≤ +125°C | 3 |
| Large Signal Voltage Gain | AVO | 120 | 136 |  | dB | 5 V table: RL = 10 kΩ, VO = 0.5 V to 4.5 V | 3 |
| Large Signal Voltage Gain | AVO | 119 |  |  | dB | 5 V table: RL = 10 kΩ, VO = 0.5 V to 4.5 V; −40°C ≤ TA ≤ +125°C | 3 |
| Offset Voltage Drift for All Packages Except SOT-23 | ∆VOS/∆T |  | 0.01 | 0.06 | μV/°C | 5 V table: −40°C ≤ TA ≤ +125°C | 3 |
| Output Voltage High | VOH | 4.97 | 4.985 |  | V | 5 V table: RL = 10 kΩ to VCM | 3 |
| Output Voltage High | VOH | 4.97 |  |  | V | 5 V table: RL = 10 kΩ to VCM; −40°C ≤ TA ≤ +125°C | 3 |
| Output Voltage High | VOH | 4.9 | 4.93 |  | V | 5 V table: RL = 2 kΩ to VCM | 3 |
| Output Voltage High | VOH | 4.86 |  |  | V | 5 V table: RL = 2 kΩ to VCM; −40°C ≤ TA ≤ +125°C | 3 |
| Output Voltage Low | VOL |  | 7.5 | 10 | mV | 5 V table: RL = 10 kΩ to VCM | 3 |
| Output Voltage Low | VOL |  |  | 15 | mV | 5 V table: RL = 10 kΩ to VCM; −40°C ≤ TA ≤ +125°C | 3 |
| Output Voltage Low | VOL |  | 32 | 40 | mV | 5 V table: RL = 2 kΩ to VCM | 3 |
| Output Voltage Low | VOL |  |  | 55 | mV | 5 V table: RL = 2 kΩ to VCM; −40°C ≤ TA ≤ +125°C | 3 |
| Short-Circuit Current | ISC | -19 |  | 19 | mA | 5 V table: TA = 25°C | 3 |
| Power Supply Rejection Ratio | PSRR | 127 | 143 |  | dB | 5 V table: VSY = 4.5 V to 16 V | 3 |
| Power Supply Rejection Ratio | PSRR | 125 |  |  | dB | 5 V table: −40°C ≤ TA ≤ +125°C | 3 |
| Supply Current per Amplifier | ISY |  | 1 | 1.3 | mA | 5 V table: IO = 0 mA | 3 |
| Supply Current per Amplifier | ISY |  |  | 1.5 | mA | 5 V table: −40°C ≤ TA ≤ +125°C | 3 |
| Offset Voltage | VOS |  | 3 | 9 | μV | 16 V table: VSY = 16 V | 4 |
| Offset Voltage | VOS |  |  | 23 | μV | 16 V table: −40°C ≤ TA ≤ +125°C | 4 |
| Input Bias Current | IB |  | 1 | 75 | pA | 16 V table | 4 |
| Input Bias Current | IB |  | 85 | 250 | pA | 16 V table: −40°C ≤ TA ≤ +125°C | 4 |
| Input Offset Current | IOS |  | 20 | 70 | pA | 16 V table | 4 |
| Input Offset Current | IOS |  | 50 | 150 | pA | 16 V table: −40°C ≤ TA ≤ +125°C | 4 |
| Input Voltage Range |  | -0.1 |  | 14 | V | 16 V table: −40°C ≤ TA ≤ +125°C | 4 |
| Common-Mode Rejection Ratio | CMRR | 127 | 142 |  | dB | 16 V table: VCM = 0 V to 14 V | 4 |
| Common-Mode Rejection Ratio | CMRR | 127 |  |  | dB | 16 V table: −40°C ≤ TA ≤ +125°C | 4 |
| Large Signal Voltage Gain | AVO | 130 | 147 |  | dB | 16 V table: RL = 10 kΩ, VO = 0.5 V to 15.5 V | 4 |
| Large Signal Voltage Gain | AVO | 130 |  |  | dB | 16 V table: RL = 10 kΩ, VO = 0.5 V to 15.5 V; −40°C ≤ TA ≤ +125°C | 4 |
| Offset Voltage Drift for All Packages Except SOT-23 | ∆VOS/∆T |  | 0.03 | 0.06 | μV/°C | 16 V table: −40°C ≤ TA ≤ +125°C | 4 |
| Output Voltage High | VOH | 15.94 | 15.96 |  | V | 16 V table: RL = 10 kΩ to VCM | 4 |
| Output Voltage High | VOH | 15.93 |  |  | V | 16 V table: RL = 10 kΩ to VCM; −40°C ≤ TA ≤ +125°C | 4 |
| Output Voltage High | VOH | 15.77 | 15.82 |  | V | 16 V table: RL = 2 kΩ to VCM | 4 |
| Output Voltage High | VOH | 15.7 |  |  | V | 16 V table: RL = 2 kΩ to VCM; −40°C ≤ TA ≤ +125°C | 4 |
| Output Voltage Low | VOL |  | 30 | 40 | mV | 16 V table: RL = 10 kΩ to VCM | 4 |
| Output Voltage Low | VOL |  |  | 60 | mV | 16 V table: RL = 10 kΩ to VCM; −40°C ≤ TA ≤ +125°C | 4 |
| Output Voltage Low | VOL |  | 120 | 140 | mV | 16 V table: RL = 2 kΩ to VCM | 4 |
| Output Voltage Low | VOL |  |  | 200 | mV | 16 V table: RL = 2 kΩ to VCM; −40°C ≤ TA ≤ +125°C | 4 |
| Short-Circuit Current | ISC | -37 |  | 37 | mA | 16 V table: TA = 25°C | 4 |
| Power Supply Rejection Ratio | PSRR | 127 | 143 |  | dB | 16 V table: VSY = 4.5 V to 16 V | 4 |
| Power Supply Rejection Ratio | PSRR | 125 |  |  | dB | 16 V table: −40°C ≤ TA ≤ +125°C | 4 |
| Supply Current per Amplifier | ISY |  | 1.25 | 1.5 | mA | 16 V table: IO = 0 mA | 4 |
| Supply Current per Amplifier | ISY |  |  | 1.7 | mA | 16 V table: −40°C ≤ TA ≤ +125°C | 4 |
| Supply Voltage |  |  |  | 16 | V |  | 5 |
| Input Voltage |  | -0.3 |  |  | V | Minimum referenced to GND; maximum is VSY+ + 0.3 V | 5 |
| Input Current |  | -10 |  | 10 | mA |  | 5 |
| Storage Temperature Range |  | -65 |  | 150 | °C |  | 5 |
| Operating Temperature Range |  | -40 |  | 125 | °C |  | 5 |
| Junction Temperature Range |  | -65 |  | 150 | °C |  | 5 |
| Lead Temperature (Soldering) |  |  |  | 300 | °C | Soldering, 60 sec | 5 |
| Supply Voltage (single supply) |  | 5 |  | 16 | V | Single supply; dual supply ±2.5 V to ±8 V | 1 |
| Thermal Resistance, junction-to-ambient (8-Lead SOIC_N, R-8) | θJA |  | 158 |  | °C/W | Standard two-layer board | 5 |
| Thermal Resistance, junction-to-case (8-Lead SOIC_N, R-8) | θJC |  | 43 |  | °C/W |  | 5 |

## CAD (KiCad official)

- Symbol: `AD8639ARZ`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ad8639arz-etched.step` / `ad8639arz-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ad8639arz.step` / `ad8639arz.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Analog Devices datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586179326596931584) (20 pp, sha256 `db3cd6696aa1ea81`, retrieved 2026-10-19, tier: lcsc)
- **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](docs/ad8639arz-datasheet.pdf)