# LMH6503MT

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

LMH6503MT from Texas Instruments, in a TSSOP-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 | V+ | power_in | Positive power supply. |
| 2 | VG | input | Gain control voltage input, gain control range -1V to +1V relative to GND, input impedance 70kΩ. |
| 3 | +VIN | input | Positive differential input, common mode voltage range ±2.0V to ±2.2V, input impedance 750kΩ. |
| 4 | +RG | passive | Positive feedback resistor node, maximum transimpedance current ±2.30 mA. |
| 5 | -RG | passive | Negative feedback resistor node, maximum transimpedance current ±2.30 mA. |
| 6 | -VIN | input | Negative differential input, common mode voltage range ±2.0V to ±2.2V, input impedance 750kΩ. |
| 7 | V- | power_in | Negative power supply. |
| 8 | V- | power_in | Negative power supply. |
| 9 | VREF | power_in | Reference voltage node. |
| 10 | VOUT | output | Output voltage, maximum ±3.20V with 100Ω load, maximum output current ±90 mA. |
| 11 | GND | power_in | Ground reference pin, gain control voltage reference. |
| 12 | I- | passive | Current reference or bias node. |
| 13 | NC | unconnected | No Connect. |
| 14 | V+ | power_in | Positive power supply. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `LMH6503MT`
- Footprint: `Package_SO:TSSOP-14_4.4x5mm_P0.65mm`
- 3D model: TSSOP-14 (KiCad packages3D, STEP)
- 3D model files: `lmh6503mt-etched.step` / `lmh6503mt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lmh6503mt.step` / `lmh6503mt.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/lmh6503) (38 pp, sha256 `e759f10497c60102`, retrieved 2026-10-07, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (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/lmh6503mt-datasheet.pdf)