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lmh32401irgtr
Public Unreviewedby Ray
Texas Instruments Special Purpose Amplifiers, VQFN-16(3x3). Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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README
markdownLMH32401IRGTR
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.
LMH32401IRGTRLMH32401IRGTT
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 (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).
Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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