# THS4541IRGTT

**Texas Instruments** · Differential Amplifiers · VQFN-16-EP(3x3)

THS4541IRGTT 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 | Negative feedback output; connect through external feedback resistor (Rf) to IN+ for signal path configuration; differential output feedback node. |
| 2 | IN+ | input | Positive amplifier input; common mode input range (Vs-) to (Vs+) with ≈1.3V margin below positive supply; accepts differential or single-ended signals. |
| 3 | IN- | input | Negative amplifier input; common mode range extends to (Vs-) - 0.1V minimum; must maintain input impedance balance with IN+ for best performance. |
| 4 | FB+ | output | Positive feedback output; connect through feedback resistor (Rf) to IN- for gain setting; feedback path for FDA configuration. |
| 5 | Vs+ | power_in | Positive power supply input (one of four pins); connect to 2.7V to 5.4V supply with 0.1µF bypass capacitor <0.1" to ground; supports single or dual supply operation. |
| 6 | Vs+ | power_in | Positive power supply input (one of four pins); multiple supply pins reduce inductance; typical single supply 3V to 5V; absolute maximum (Vs+) - (Vs-) = 5.5V. |
| 7 | Vs+ | power_in | Positive power supply input (one of four pins); use for low-inductance power distribution; share larger bypass capacitors (2.2µF) across multiple supply pins. |
| 8 | Vs+ | power_in | Positive power supply input (one of four pins); return path for output stage current; connect to positive supply through decoupling network. |
| 9 | Vocm | input | Common mode output voltage control input; operating range 0.91V to 1.1V margin from supply rails; leave open for default 1/2 Vs or drive with voltage reference; 47kΩ input impedance. |
| 10 | OUT+ | output | Positive amplifier output (rail-to-rail); output voltage swing limited to ≈0.2V margin from each supply rail; capable of ±75mA output current at 25°C. |
| 11 | OUT- | output | Negative amplifier output (rail-to-rail); output common mode voltage set by Vocm input; differential output centered on Vocm for direct ADC interfacing. |
| 12 | PD | input | Power down control input; set ≥(Vs-) + 1.7V for normal operation, ≤(Vs-) + 0.7V for shutdown with ≈2µA static current; CMOS logic input, do not leave floating. |
| 13 | Vs- | power_in | Negative power supply input (one of four pins); typically ground in single supply operation, ≤ -2.7V in dual supply mode; use multiple pins for ground distribution. |
| 14 | Vs- | power_in | Negative power supply input (one of four pins); minimum supply voltage (Vs+) - (Vs-) = 2.7V, maximum 5.5V; connect to ground plane for low impedance. |
| 15 | Vs- | power_in | Negative power supply input (one of four pins); part of differential power supply; share with other ground pins for reduced return path inductance. |
| 16 | Vs- | power_in | Negative power supply input (one of four pins); reference for input and output voltage swings; connect to continuous ground plane with via array. |
| 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: `THS4541IRGTT`
- 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: `ths4541irgtt-etched.step` / `ths4541irgtt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ths4541irgtt.step` / `ths4541irgtt.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/ths4541) (67 pp, sha256 `7b53ae5aaa38c66d`, retrieved 2026-10-07, 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 0.3`, 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/ths4541irgtt-datasheet.pdf)