# VCA822IDR

**Texas Instruments** · Programmable / Variable Gain Amplifiers (PGA/VGA) · SOIC-14

VCA822IDR from Texas Instruments, 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 | +VCC | power_in | Positive supply pin; the datasheet gives an absolute maximum power supply of ±6.5 V and a recommended operating voltage of 7 V to 12 V (10 V nominal). |
| 2 | VG | input | Gain control input; the gain follows the control voltage linearly in V/V as it varies from +1 V to −1 V, giving a gain of 10 V/V at +1 V and 0.1 V/V at −1 V for a +10 V/V maximum gain. |
| 3 | +VIN | input | Noninverting signal input of the differential-input, single-ended-output variable gain amplifier. |
| 4 | +RG | input | Gain-set resistor connection; the maximum gain equals 2 × (RF / RG), and the maximum gain is intended to be set between +2 V/V and +100 V/V. |
| 5 | -RG | input | Gain-set resistor connection; the maximum gain equals 2 × (RF / RG), and the maximum gain is intended to be set between +2 V/V and +100 V/V. |
| 6 | -VIN | input | Inverting signal input of the differential-input, single-ended-output variable gain amplifier; the input voltage must not exceed ±VS. |
| 7 | -VCC | power_in | Negative supply pin; the datasheet gives an absolute maximum power supply of ±6.5 V and a recommended operating voltage of 7 V to 12 V (10 V nominal). |
| 8 | -VCC | power_in | Negative supply pin; the datasheet gives an absolute maximum power supply of ±6.5 V and a recommended operating voltage of 7 V to 12 V (10 V nominal). |
| 9 | VREF | power_in | Output voltage reference input (listed for the SOIC-14 package only). |
| 10 | VOUT | output | Amplifier output of the feedback amplifier stage, which provides ±160 mA high output current. |
| 11 | GND | power_in | Ground reference pin. |
| 12 | FB | input | Feedback resistor input (RF connection) that sets the maximum gain together with the gain-set resistor RG. |
| 13 | NC | unconnected | No connect pin; leave unconnected. |
| 14 | +VCC | power_in | Positive supply pin; the datasheet gives an absolute maximum power supply of ±6.5 V and a recommended operating voltage of 7 V to 12 V (10 V nominal). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-14 |
| Category | Amplifiers/Comparators |
| Pins | 14 |

## CAD (KiCad official)

- Symbol: `VCA822IDR`
- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`
- 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files: `vca822idr-etched.step` / `vca822idr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `vca822idr.step` / `vca822idr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/vca822.pdf) (50 pp, sha256 `e365bda82e4c68d9`, retrieved 2026-10-07, 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](docs/vca822idr-datasheet.pdf)