# VCA820IDGSR

**Texas Instruments** · Programmable / Variable Gain Amplifiers (PGA/VGA) · MSOP-10

VCA820IDGSR from Texas Instruments, in a MSOP-10. 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 | I- | input | Feedback resistor input; the maximum gain is set externally by the feedback resistor Rf and gain-set resistor Rg, with maximum gain equal to 2 x (Rf/Rg). |
| 2 | +V | power_in | Positive supply pin; the absolute maximum power supply is ±6.3 V and the recommended operating voltage is 7 V to 12 V. |
| 3 | VG | input | Gain control input; gain decreases linearly in dB as VG falls from +2 V to 0 V, giving over 40 dB of gain adjust range. |
| 4 | +VIN | input | Noninverting input of the differential-to-single-ended input stage; input voltage must not exceed ±VS per the absolute maximum ratings. |
| 5 | +RG | input | Gain-set resistor connection; together with -RG and the feedback resistor it sets the maximum gain, which is intended to be between +2 V/V and +100 V/V. |
| 6 | -RG | input | Gain-set resistor connection; together with +RG and the feedback resistor it sets the maximum gain, which is intended to be between +2 V/V and +100 V/V. |
| 7 | -VIN | input | Inverting input of the differential-to-single-ended input stage; input voltage must not exceed ±VS per the absolute maximum ratings. |
| 8 | -V | power_in | Negative supply pin; the absolute maximum power supply is ±6.3 V and the recommended operating voltage is 7 V to 12 V. |
| 9 | VOUT | output | Single-ended output of the amplifier, which provides high output current of 160 mA. |
| 10 | GND | power_in | Ground reference pin for the device. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | MSOP-10 |
| Category | Amplifiers/Comparators |
| Pins | 10 |

## CAD (KiCad official)

- Symbol: `VCA820IDGSR`
- Footprint: `Package_SO:MSOP-10_3x3mm_P0.5mm`
- 3D model: MSOP-10 (KiCad packages3D, STEP)
- 3D model files: `vca820idgsr-etched.step` / `vca820idgsr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `vca820idgsr.step` / `vca820idgsr.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/cn/lit/gpn/vca820) (51 pp, sha256 `bb7e01b7a2f10244`, retrieved 2026-10-11, 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/vca820idgsr-datasheet.pdf)