lmh32401irgtr

@@ -0,0 +1,60 @@+# LMH32401IRGTR++**Texas Instruments** · Special Purpose Amplifiers · VQFN-16(3x3)++LMH32401IRGTR from Texas Instruments, in a VQFN-16(3x3). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | GND | power_in | Amplifier ground. Connect to system ground plane. |+| 2 | VDD1 | power_in | Positive power supply for the transimpedance amplifier stage. 3.0-3.45 V (3.3 V nominal). Tie to VDD2 with independent power-supply bypassing. |+| 3 | IN | input | Transimpedance amplifier input. Connect to photodiode cathode/anode. Max continuous current 25 mA. |+| 4 | NC | unconnected | No connection. Leave floating or tie as recommended by layout guidelines. |+| 5 | IDC_EN | input | Ambient light cancellation (ALC) loop enable (active low). IDC_EN = logic low enables DC current cancellation (default); IDC_EN = logic high disables DC current cancellation. |+| 6 | EN | input | Device enable pin (active low). EN = logic low = normal operation (default); EN = logic high = power off mode. Logic pin voltage range −0.25 V to VDD. |+| 7 | GND | power_in | Amplifier ground. Connect to system ground plane. |+| 8 | NC | unconnected | No connection. |+| 9 | VOD | input | Differential amplifier differential output offset setting input. Sets the DC offset between OUT+ and OUT−. |+| 10 | OUT+ | output | Noninverting differential amplifier output. When light is incident on the photodiode (APD anode connected to negative bias) the output transitions in a positive direction from the no-light condition. Max continuous output current 35 mA; 1.5 Vpp swing. |+| 11 | OUT- | output | Inverting differential amplifier output. When light is incident on the photodiode the output transitions in a negative direction from the no-light condition. Max continuous output current 35 mA; 1.5 Vpp swing. |+| 12 | VOCM | input | Differential amplifier common-mode output setting input. Sets the DC common-mode voltage of OUT+/OUT−; typically driven from the ADC VCM reference. |+| 13 | NC | unconnected | No connection. |+| 14 | VDD2 | power_in | Positive power supply for the differential amplifier stage. 3.0-3.45 V (3.3 V nominal). Tie VDD1 and VDD2 to the same supply with independent power-supply bypass capacitors. |+| 15 | NC | unconnected | No connection. |+| 16 | GAIN | input | Transimpedance gain setting. GAIN = low → 2 kΩ (default); GAIN = high → 20 kΩ. |+| 17 | EP | power_in | Exposed thermal pad. Connect to GND or the most negative power supply of the DUT for thermal dissipation and electrical reference. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | VQFN-16(3x3) |+| Category | Amplifiers/Comparators |+| Pins | 17 |++## Ordering variants++Same part, different packaging or reel option.++- `LMH32401IRGTR`+- `LMH32401IRGTT`++## CAD (KiCad official)++- Symbol: `LMH32401IRGTR`+- Footprint: `Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm`+- 3D model: VQFN-16(3x3) (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lmh32401) (41 pp, sha256 `1ccefd6d8dd4e204`, retrieved 2026-08-17, 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:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/lmh32401irgtr-datasheet.pdf)

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