component
THS3491IRGTR
Public Made by Adomby adom
Texas Instruments Operational Amplifier, VQFN-16-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownTHS3491IRGTR
Texas Instruments · Operational Amplifier · VQFN-16-EP(3x3)
THS3491IRGTR from Texas Instruments, in a VQFN-16-EP(3x3). 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 | FB | output | Input side feedback pin, internally connected to amplifier output for feedback network gain and stability control. |
| 2 | NC | unconnected | No internal connection; recommended to tie to ground plane. |
| 3 | VIN- | power_in | Inverting input with 8-18 Ω input impedance; requires 4.1-4.3 V headroom to either supply rail. |
| 4 | VIN+ | power_in | Noninverting input with 50 Ω |
| 5 | GND | power_in | Ground and power supply reference; also serves as PD logic reference for power-down pin thresholds. |
| 6 | TJ_SENSE | output | Junction temperature sense output with 32.4-38 kΩ input impedance; generates 0.915-1.15 V at 25°C with 3.2 mV/°C temperature coefficient. |
| 7 | -VS | power_in | Negative power supply for ±7 V to ±16 V dual supply or GND for 14-32 V single supply operation. |
| 8 | -VS | power_in | Negative power supply for ±7 V to ±16 V dual supply or GND for 14-32 V single supply operation. |
| 9 | NC | unconnected | No internal connection; recommended to tie to ground plane. |
| 10 | VOUT | output | Amplifier output; sources ±420 mA linear output current at ±9.4 V into 24 Ω load. |
| 11 | VOUT | output | Amplifier output; sources ±420 mA linear output current at ±9.4 V into 24 Ω load. |
| 12 | NC | unconnected | No internal connection; recommended to tie to ground plane. |
| 13 | +VS | power_in | Positive power supply for ±7 V to ±16 V dual supply or 14-32 V single supply operation. |
| 14 | +VS | power_in | Positive power supply for ±7 V to ±16 V dual supply or 14-32 V single supply operation. |
| 15 | NC | unconnected | No internal connection; recommended to tie to ground plane. |
| 16 | PD | input | Power-down control input; enable threshold at REF + 1.5 V, disable threshold at REF + 0.8 V. |
| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VQFN-16-EP(3x3) |
| Category | Amplifiers/Comparators |
| Pins | 17 |
CAD (KiCad official)
- Symbol:
THS3491IRGTR - Footprint:
Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm - 3D model: VQFN-16-EP(3x3) (KiCad packages3D, STEP)
- 3D model files:
ths3491irgtr-etched.step/ths3491irgtr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ths3491irgtr.step/ths3491irgtr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (56 pp, sha256
0efd0b60aa999c61, retrieved 2026-09-24, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).