Texas Instruments LMP8602MM/NOPB

Overview

LMP8602MM/NOPB from Texas Instruments is a precision bidirectional current-sense amplifier with fixed 50× gain, –22V to +60V input common-mode voltage range (at 5V supply), 90dB minimum CMRR, and in-line filter capability for signal conditioning in high-noise industrial power systems. It enables accurate shunt-based current monitoring in DC/DC converters, motor drives, and server power supplies.

For engineers reviewing the LMP8602MM/NOPB datasheet, LMP8602MM/NOPB pinout, LMP8602MM/NOPB application, or LMP8602MM/NOPB equivalent, key selection criteria include its rail-to-rail output swing at 5V supply, ±1mV max input offset voltage, ±10μV/°C TCVOS, and dual-stage gain architecture enabling external filtering between A1 and A2 pins.

Technical Context

The LMP8602MM/NOPB implements a proprietary chopping level-shift input stage that translates high common-mode voltages (–22V to +60V) into the internal supply domain while preserving low offset and high CMRR. Its two-stage gain architecture-10× preamplifier followed by 5× output buffer-exposes the A1 node for external RC filtering or gain adjustment.

This architecture supports bidirectional sensing via the OFFSET pin, which sets the output midscale reference; the device operates single-supply from 3V to 5.5V and delivers 60kHz bandwidth with 0.83V/µs slew rate at 5V supply, optimized for driving ADC inputs to full scale without external amplification.

Key Specifications

Pinout & Package

The LMP8602MM/NOPB is packaged in an 8-pin VSSOP (DGK) package measuring 3.00mm × 4.90mm, optimized for space-constrained PCB layouts in power modules and server VRMs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar current-sense amplifier applications.

Compared with INA240A1IDR and MAX40056ATA+T, the LMP8602MM/NOPB uniquely provides accessible A1/A2 nodes for in-line filtering and OFFSET-controlled bidirectional operation-critical for applications requiring adaptive noise suppression and zero-centered current waveforms.

Availability

LMP8602MM/NOPB is available at Aetrix Electronics and suitable for DC/DC converter monitoring, Intel server VRM design, linear motor power stages, and field transmitter & sensor applications requiring stable component supply and long-term production continuity.

Supply support for LMP8602MM/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in precision amplifiers, power management, and signal chain solutions.

The LMP860x family was designed specifically for high-accuracy, high-common-mode current sensing in industrial power conversion, server infrastructure, and motor control-emphasizing low drift, robust fault tolerance, and flexible signal conditioning.

FAQ

What is the maximum common-mode voltage supported by the LMP8602MM/NOPB?

The LMP8602MM/NOPB supports a –22V to +60V input common-mode voltage range when operating from a 5V supply, enabling direct high-side or negative-rail current sensing in 48V systems and industrial power rails without level-shifting circuitry.

How does the OFFSET pin function in the LMP8602MM/NOPB?

The OFFSET pin in the LMP8602MM/NOPB sets the output midscale reference voltage-typically tied to VS/2-to enable bidirectional current measurement. When OFFSET = 2.5V (at 5V supply), the LMP8602MM/NOPB outputs 2.5V at zero current, scaling linearly to 0V and 5V for negative and positive full-scale currents.

Can the LMP8602MM/NOPB be used with a 3.3V supply?

Yes, the LMP8602MM/NOPB operates from 3V to 5.5V. At 3.3V supply, its common-mode range is –4V to +27V, gain remains 50×, and output swing is 0–3.25V (to VS) and 2mV (to GND), making it suitable for low-voltage embedded systems with appropriate shunt sizing.

What is the purpose of the A1 and A2 pins on the LMP8602MM/NOPB?

The A1 pin provides the 10× preamplified signal, and A2 serves as the input to the 5× output buffer. This two-stage architecture allows external RC filters or gain-adjustment networks to be inserted between A1 and A2-enabling application-specific noise suppression without affecting the final gain accuracy of the LMP8602MM/NOPB.

Does the LMP8602MM/NOPB require external gain-setting resistors?

No, the LMP8602MM/NOPB features factory-trimmed fixed gain of 50× achieved through a 10× preamplifier and 5× output buffer. No external resistors are needed for gain setting, reducing component count and improving temperature stability compared to programmable current-sense amplifiers.