LMP8481MMX-S from Texas Instruments, in a VSSOP-8. 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	RSP	input	Positive current-sense input. Connect to the high-side (source) end of the external sense resistor. Common-mode range 4 V to 76 V; input bias current ~7 µA.
2	VCC	power_in	Positive supply voltage input, 4.5 V to 76 V (85 V abs max). Quiescent current < 100 µA typical. Decouple to GND with a local bypass capacitor.
3	NC	unconnected	No connect - not internally connected. Leave floating or tie to GND for board robustness.
4	GND	power_in	Device ground return for the low-voltage supply and internal reference circuitry.
5	VOUT	output	Buffered analog voltage output equal to gain (60 V/V for -S) × (V(RSP) - V(RSN)) plus the reference offset set by REFA/REFB. Drives >5 mA into loads; recommended RL ≥ 100 kΩ for full accuracy. Output limited to min(VCC + 0.3 V, +20 V).
6	REFB	input	Reference voltage 'B' input for the LMP8481. Combined with REFA it sets the VOUT zero-current level for bidirectional sensing; when REFA and REFB are tied together the range is -0.3 V to min(VCC - 1.5 V, +6 V); with the other REF pin grounded a single REF pin may swing up to +12 V (see recommended operating conditions).
7	REFA	input	Reference voltage 'A' input for the LMP8481. Paired with REFB to program the VOUT offset for bidirectional current sensing. Typical configuration: tie REFA and REFB together to a mid-supply reference, or ground one and drive the other for split biasing.
8	RSN	input	Negative current-sense input. Connect to the load-side end of the external sense resistor. Differential input voltage range ±85 V max; input bias current ~7 µA.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	VSSOP-8
Category	Amplifiers/Comparators
Pins	8

Ordering variants

Same part, different packaging or reel option.

LMP8481MMX-S/NOPB
LMP8481MMX-H/NOPB
LMP8481MMX-T/NOPB
LMP8481MM-H/NOPB
LMP8481MM-T/NOPB
LMP8481MME-H/NOPB
LMP8481MME-T/NOPB

CAD (KiCad official)

Symbol: LMP8481MMX-S
Footprint: Package_SO:VSSOP-8_2.3x2mm_P0.5mm
3D model: VSSOP-8 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Texas Instruments datasheet (None pp, sha256 647bd3a212d2fefb, 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