Texas Instruments LMH6882SQX/NOPB

Overview

LMH6882SQX/NOPB from Texas Instruments is a DC–2.4 GHz dual programmable differential amplifier optimized for RF/IF signal conditioning in high-linearity receiver chains. It delivers 26 dB to 6 dB voltage gain in 0.25 dB steps, 42 dBm OIP3 at 100 MHz, 9.7 dB noise figure, and 100 Ω differential input impedance - enabling direct interface with mixers and filters in microwave backhaul and I/Q sampling systems.

For engineers reviewing the LMH6882SQX/NOPB datasheet, LMH6882SQX/NOPB pinout, LMH6882SQX/NOPB application, or LMH6882SQX/NOPB equivalent, key selection criteria include its dual-channel gain matching (±0.2 dB), sub-20 ns gain switching time, parallel/SPI digital control flexibility, and thermal performance in the 6 mm × 6 mm WQFN package.

Technical Context

The LMH6882SQX/NOPB integrates three functional stages per channel: a low-noise amplifier, digitally controlled attenuator, and low-distortion output driver. Its architecture maintains consistent OIP3 and noise figure across the full 20 dB gain range - unlike conventional VGAs where linearity degrades at lower gains.

It supports both differential (100 Ω) and single-ended (50 Ω) inputs with independent common-mode voltage control via OCM pins (2× gain), and features dual power-down modes: hardware SD pin control (SPI = 0) and SPI register control (SPI = 1).

Key Specifications

Pinout & Package

The LMH6882SQX/NOPB is housed in a thermally enhanced 36-pin WQFN package (6.00 mm × 6.00 mm) with exposed center pad bonded to ground for optimal thermal dissipation (θ_JA = 33.6 °C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable differential amplifier applications.

Compared with LMH6882SQX/NOPB, LMH6881RTVT offers identical per-channel performance in half the channel count, while HMC900LP5E extends bandwidth by 400 MHz but sacrifices integration, DC coupling, and digital programmability - making LMH6882SQX/NOPB optimal for compact, software-configurable dual-path receivers.

Availability

LMH6882SQX/NOPB is available at Aetrix Electronics and suitable for microwave backhaul radio receivers, zero-IF sampling systems, and medical imaging front-ends requiring stable component supply, long-term production continuity, and traceable sourcing.

Supply support for LMH6882SQX/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 leader specializing in analog and embedded processing technologies, with decades of expertise in high-speed amplifier design and RF signal chain solutions.

The LMH6882SQX/NOPB belongs to TI's high-linearity programmable differential amplifier product line, engineered specifically for demanding receiver applications in wireless infrastructure, test equipment, and medical imaging where gain agility, DC coupling, and dual-channel matching are essential.

FAQ

What is the maximum small-signal bandwidth of the LMH6882SQX/NOPB?

The LMH6882SQX/NOPB has a small-signal bandwidth of 2.4 GHz, verified under standard test conditions (VCC = 5 V, RL = 200 Ω, maximum gain). This bandwidth supports DC-coupled amplification from baseband through L-band RF frequencies without external compensation, making it suitable for broadband receiver front-ends and high-speed data acquisition systems using the LMH6882SQX/NOPB.

Does the LMH6882SQX/NOPB support both differential and single-ended inputs?

Yes, the LMH6882SQX/NOPB supports both configurations: differential inputs (INPDA/INMDA and INPDB/INMDB) with 100 Ω impedance, and single-ended inputs (INPSA/INMSA and INPSB/INMSB) with 50 Ω impedance. For single-ended use, the unused input must be terminated to 50 Ω. This dual-input capability eliminates external matching networks when interfacing with mixers, filters, or 50 Ω signal sources in designs using the LMH6882SQX/NOPB.

How does gain control work on the LMH6882SQX/NOPB?

The LMH6882SQX/NOPB supports two gain control modes: parallel (7-bit D0–D6 bus, 0.25 dB steps) and SPI-compatible serial interface. In parallel mode, both channels share the same gain code; SPI mode allows independent channel control. Gain updates settle in 20 ns, and the device maintains 42 dBm OIP3 across the full 6–26 dB range - a key differentiator of the LMH6882SQX/NOPB versus conventional VGAs.

What is the purpose of the OCM pins on the LMH6882SQX/NOPB?

The OCMA and OCMB pins set the output common-mode voltage for each channel with 2× gain: applying 1.25 V yields 2.5 V at the differential outputs. This enables precise DC-level alignment with downstream ADCs or other devices requiring specific common-mode bias. The OCM functionality is integral to the LMH6882SQX/NOPB's DC-coupled operation and eliminates need for AC-coupling capacitors or external level-shifting circuitry.

Is the LMH6882SQX/NOPB suitable for high-density PCB layouts?

Yes - the LMH6882SQX/NOPB uses a 6 mm × 6 mm WQFN package with four dedicated VCC and GND pins plus an exposed thermal pad, enabling robust power delivery and thermal management in space-constrained layouts. Its integrated 100 Ω/50 Ω input termination, DC coupling, and dual-channel matching reduce external component count, simplifying layout and improving signal integrity - critical advantages for compact RF modules using the LMH6882SQX/NOPB.