# ADA4891-4ARZ-R7

**Analog Devices** · Operational Amplifier · SOIC-14

ADA4891-4ARZ-R7 from Analog Devices, in a SOIC-14. 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 amplifier 1; the output swings to within 50 mV of each supply rail. |
| 2 | -IN1 | input | Inverting input of amplifier 1; the input voltage range extends 300 mV below the negative rail. |
| 3 | +IN1 | input | Noninverting input of amplifier 1; the input voltage range extends 300 mV below the negative rail. |
| 4 | +VS | power_in | Positive supply pin; the amplifiers operate from a wide supply range of 2.7 V to 5.5 V. |
| 5 | +IN2 | input | Noninverting input of amplifier 2; the input voltage range extends 300 mV below the negative rail. |
| 6 | -IN2 | input | Inverting input of amplifier 2; the input voltage range extends 300 mV below the negative rail. |
| 7 | OUT2 | output | Output of amplifier 2; the output swings to within 50 mV of each supply rail. |
| 8 | OUT3 | output | Output of amplifier 3; the output swings to within 50 mV of each supply rail. |
| 9 | -IN3 | input | Inverting input of amplifier 3; the input voltage range extends 300 mV below the negative rail. |
| 10 | +IN3 | input | Noninverting input of amplifier 3; the input voltage range extends 300 mV below the negative rail. |
| 11 | -VS | power_in | Negative supply pin; the input voltage range extends 300 mV below this negative rail. |
| 12 | +IN4 | input | Noninverting input of amplifier 4; the input voltage range extends 300 mV below the negative rail. |
| 13 | -IN4 | input | Inverting input of amplifier 4; the input voltage range extends 300 mV below the negative rail. |
| 14 | OUT4 | output | Output of amplifier 4; the output swings to within 50 mV of each supply rail. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | SOIC-14 |
| Category | Amplifiers/Comparators |
| Pins | 14 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Output Voltage Swing (RL = 1 kΩ to 2.5 V, 5 V) |  | 0.01 |  | 4.98 | V | RL = 1 kΩ to 2.5 V | 4 |
| Output Voltage Swing (RL = 150 Ω to 2.5 V, 5 V) |  | 0.08 |  | 4.9 | V | RL = 150 Ω to 2.5 V | 4 |
| Output Voltage Swing (RL = 1 kΩ to 1.5 V, 3 V) |  | 0.01 |  | 2.98 | V | RL = 1 kΩ to 1.5 V | 6 |
| Output Voltage Swing (RL = 150 Ω to 1.5 V, 3 V) |  | 0.07 |  | 2.87 | V | RL = 150 Ω to 1.5 V | 6 |
| Operating Range |  | 2.7 |  | 5.5 | V |  | 5 |
| Operating Temperature Range |  | -40 |  | 125 | °C |  | 5 |
| Input Offset Voltage |  | -10 | 2.5 | 10 | mV |  | 4 |
| Input Offset Voltage (TMIN to TMAX) |  | -3.1 |  | 3.1 | mV | TMIN to TMAX | 4 |
| Input Bias Current |  | -50 | 2 | 50 | pA |  | 4 |
| Open-Loop Gain (RL = 1 kΩ to 2.5 V, 5 V) |  | 77 | 83 |  | dB | RL = 1 kΩ to 2.5 V | 4 |
| Open-Loop Gain (RL = 1 kΩ to 1.5 V, 3 V) |  | 72 | 76 |  | dB | RL = 1 kΩ to 1.5 V | 5 |
| Supply Voltage |  |  |  | 6 | V |  | 7 |
| Storage Temperature Range |  | -65 |  | 125 | °C |  | 7 |
| Operating Temperature Range (absolute maximum) |  | -40 |  | 125 | °C |  | 7 |
| Lead Temperature (Soldering) |  |  |  | 300 | °C | Soldering, 10 sec | 7 |
| Junction Temperature | TJ |  |  | 175 | °C | Exceeded for an extended period can result in device failure | 7 |
| Thermal Resistance, Junction-to-Ambient (14-Lead SOIC_N) | θJA |  | 162 |  | °C/W | Still air, JEDEC 4-layer board | 7 |
| Quiescent Current per Amplifier (5 V) |  |  | 4.4 |  | mA |  | 5 |
| Quiescent Current per Amplifier (3 V) |  |  | 3.5 |  | mA |  | 6 |
| Output Current |  |  | 125 |  | mA | 1% THD with 1 MHz, VO = 2 V p-p | 4 |
| Output Current (3 V) |  |  | 37 |  | mA | 1% THD with 1 MHz, VO = 2 V p-p | 6 |
| Short-Circuit Current, Sourcing (5 V) |  |  | 205 |  | mA |  | 4 |
| Short-Circuit Current, Sinking (5 V) |  |  | 307 |  | mA |  | 4 |
| Short-Circuit Current, Sourcing (3 V) |  |  | 80 |  | mA |  | 6 |
| Short-Circuit Current, Sinking (3 V) |  |  | 163 |  | mA |  | 6 |
| Positive PSRR (5 V) |  |  | 65 |  | dB | +VS = 5 V to 5.25 V, −VS = 0 V | 5 |
| Negative PSRR (5 V) |  |  | 63 |  | dB | +VS = 5 V, −VS = −0.25 V to 0 V | 5 |
| Positive PSRR (3 V) |  |  | 76 |  | dB | +VS = 3 V to 3.15 V, −VS = 0 V | 6 |
| Negative PSRR (3 V) |  |  | 72 |  | dB | +VS = 3 V, −VS = −0.15 V to 0 V | 6 |
| Common-Mode Rejection Ratio (5 V) | CMRR |  | 88 |  | dB | VCM = 0 V to 3.0 V | 4 |
| Common-Mode Rejection Ratio (3 V) | CMRR |  | 87 |  | dB | VCM = 0 V to 1.5 V | 6 |
| Input Resistance |  |  | 5 |  | GΩ |  | 4 |
| Input Capacitance |  |  | 3.2 |  | pF |  | 4 |
| Open-Loop Gain (RL = 150 Ω to 2.5 V, 5 V) |  |  | 71 |  | dB | RL = 150 Ω to 2.5 V | 4 |
| Open-Loop Gain (RL = 150 Ω to 1.5 V, 3 V) |  |  | 65 |  | dB | RL = 150 Ω to 1.5 V | 5 |
| −3 dB Small-Signal Bandwidth (5 V) |  |  | 220 |  | MHz | G = +1, VO = 0.2 V p-p | 4 |
| −3 dB Small-Signal Bandwidth (5 V) |  |  | 96 |  | MHz | G = +2, VO = 0.2 V p-p, RL = 150 Ω to 2.5 V | 4 |
| −3 dB Small-Signal Bandwidth (3 V) |  |  | 175 |  | MHz | G = +1, VO = 0.2 V p-p | 5 |
| −3 dB Small-Signal Bandwidth (3 V) |  |  | 80 |  | MHz | G = +2, VO = 0.2 V p-p, RL = 150 Ω to 1.5 V | 5 |
| Bandwidth for 0.1 dB Gain Flatness (5 V) |  |  | 25 |  | MHz | G = +2, VO = 2 V p-p, RL = 150 Ω to 2.5 V, RF = 374 Ω | 4 |
| Bandwidth for 0.1 dB Gain Flatness (3 V) |  |  | 18 |  | MHz | G = +2, VO = 2 V p-p, RL = 150 Ω to 1.5 V, RF = 374 Ω | 5 |
| −3 dB Large-Signal Frequency Response (5 V) |  |  | 40 |  | MHz | G = +2, VO = 2 V p-p, RL = 150 Ω | 4 |
| −3 dB Large-Signal Frequency Response (3 V) |  |  | 40 |  | MHz | G = +2, VO = 2 V p-p, RL = 150 Ω | 5 |
| Settling Time to 0.1% (5 V) |  |  | 28 |  | ns | G = +2, VO = 2 V step | 4 |
| Settling Time to 0.1% (3 V) |  |  | 30 |  | ns | G = +2, VO = 2 V step | 5 |
| Input Voltage Noise |  |  | 9 |  | nV/√Hz | f = 1 MHz | 4 |
| Differential Gain Error (NTSC, 5 V) |  |  | 0.05 |  | % | G = +2, RL = 150 Ω to 2.5 V | 4 |
| Differential Gain Error (NTSC, 3 V) |  |  | 0.23 |  | % | G = +2, RL = 150 Ω to 0.5 V, +VS = 2 V, −VS = −1 V | 5 |
| Differential Phase Error (NTSC, 5 V) |  |  | 0.25 |  | Degrees | G = +2, RL = 150 Ω to 2.5 V | 4 |
| Differential Phase Error (NTSC, 3 V) |  |  | 0.77 |  | Degrees | G = +2, RL = 150 Ω to 0.5 V, +VS = 2 V, −VS = −1 V | 5 |
| All-Hostile Crosstalk (5 V) |  |  | -80 |  | dB | f = 5 MHz, G = +2, VO = 2 V p-p | 4 |
| All-Hostile Crosstalk (3 V) |  |  | -80 |  | dB | f = 5 MHz, G = +2 | 5 |
| Offset Drift |  |  | 6 |  | µV/°C |  | 4 |

## CAD (KiCad official)

- Symbol: `ADA4891-4ARZ-R7`
- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`
- 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files: `ada4891-4arz-r7-etched.step` / `ada4891-4arz-r7-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ada4891-4arz-r7.step` / `ada4891-4arz-r7.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/8589800358253002752) (24 pp, sha256 `e0131dfef4f9ec15`, retrieved 2026-10-20, 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](docs/ada4891-4arz-r7-datasheet.pdf)