Texas Instruments LMH7220MGX/NOPB

Overview

LMH7220MGX/NOPB from Texas Instruments is a high-speed comparator with LVDS differential output, operating from 2.7V to 12V supply, delivering 2.9 ns propagation delay, 0.6 ns rise/fall times, and 325 mV differential swing into 100Ω - used in oscilloscope triggering and fast line reception where timing precision and noise immunity are critical.

For engineers reviewing the LMH7220MGX/NOPB datasheet, LMH7220MGX/NOPB pinout, LMH7220MGX/NOPB application, or LMH7220MGX/NOPB equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, and two confirmed alternative comparators for LVDS-output high-speed sensing applications.

Technical Context

The LMH7220MGX/NOPB implements a current-mode LVDS output stage with internal CM feedback loop maintaining 1.2 V common-mode voltage independent of supply; its input stage supports common-mode range down to −0.2 V (200 mV below ground) enabling single-supply ground-sensing configurations.

Propagation delay dispersion is characterized at ≤0.86 ns over 20–100 mV overdrive, and skew between Q/Q outputs is ≤0.09 ns, supporting sub-nanosecond timing alignment in high-fidelity acquisition systems.

Key Specifications

Pinout & Package

LMH7220MGX/NOPB is housed in a 6-pin SOT-23 package (DCU suffix per TI packaging nomenclature), with exposed pad not electrically connected; footprint compatible with JEDEC MO-178AA, thermal resistance θ_JA = 189°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed LVDS-output comparator applications.

Compared with LMH7220MGX/NOPB, LMH7220MK/NOPB offers identical electrical performance in a smaller package but with reduced thermal capability, while ADCMP572BCPZ-R2 delivers faster timing at the cost of incompatible output signaling and higher power - making LMH7220MGX/NOPB the optimal choice for LVDS-integrated, thermally stable, industrial-grade designs.

Availability

LMH7220MGX/NOPB is available at Aetrix Electronics and suitable for oscilloscope triggering, fast differential line reception, and pulse height analysis requiring stable component supply across extended temperature ranges and high-volume production cycles.

Supply support for LMH7220MGX/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, embedded processing, and high-performance signal chain solutions, with decades of expertise in precision comparators and high-speed interfaces.

The LMH7220MGX/NOPB belongs to TI's high-speed comparator product line, designed specifically for applications demanding sub-3 ns timing accuracy, LVDS compatibility, and robust operation from −40°C to +125°C.

FAQ

What is the LVDS output compliance status of LMH7220MGX/NOPB?

The LMH7220MGX/NOPB meets ANSI/TIA/EIA-644 LVDS standards with a guaranteed 250–400 mV differential output voltage (VOD) into 100 Ω, 1.2 V common-mode level, and <10 ps RMS jitter. Its current-mode output architecture ensures stable swing across supply and temperature - no external regulators or terminations beyond the 100 Ω differential load are required for full compliance. LMH7220MGX/NOPB maintains this behavior across its full 2.7–12 V supply range.

Can LMH7220MGX/NOPB operate with a single 3.3 V supply?

Yes, LMH7220MGX/NOPB is fully specified and tested at 2.7 V, 3.3 V, 5 V, and 12 V supplies. At 3.3 V, it delivers 2.9 ns propagation delay, 0.6 ns rise/fall times, and 325 mV LVDS swing - all within datasheet limits. Input common-mode range extends to −0.2 V, allowing direct interface to ground-referenced signals without level-shifting. LMH7220MGX/NOPB draws only 6.8 mA at 5 V and scales predictably down to ~6.6 mA at 2.7 V.

What is the maximum toggle rate supported by LMH7220MGX/NOPB?

LMH7220MGX/NOPB supports up to 940 Mb/s toggle rate at 5 V supply (typical), with 750 Mb/s minimum guaranteed across temperature. This is measured under ±50 mV overdrive into 2 pF load at 50% output swing. The 0.6 ns edge fidelity and low overdrive dispersion (<0.86 ns) ensure reliable high-frequency operation in serial data recovery, time-of-flight, and burst-mode detection systems. LMH7220MGX/NOPB achieves this without exceeding 34 mW quiescent power at 5 V.

How does LMH7220MGX/NOPB handle input common-mode voltage variations?

LMH7220MGX/NOPB maintains CMRR ≥60 dB over a −0.2 V to V_CC−2.2 V input common-mode range, with worst-case dispersion of 0.55 ns in propagation delay across 0–10 V CM range at 4 V/ns slew rate. Its input stage uses matched 1.5 kΩ resistors and anti-parallel diode clamps to protect against overvoltage while preserving low offset drift (±50 µV/°C). LMH7220MGX/NOPB's design ensures stable decision thresholds even with large ground shifts or noisy supply rails.

Is LMH7220MGX/NOPB pin-compatible with other TI comparators?

No - LMH7220MGX/NOPB uses a unique 6-pin SOT-23 (DCU) pinout optimized for LVDS signaling: Pins 1/3 are differential inputs, Pin 2 is GND, Pin 4 is V_CC, and Pins 5/6 are complementary LVDS outputs. It is not pin-compatible with LMH7322, TLV3501, or ADCMP series comparators, which use different output architectures (CMOS, ECL, or open-emitter) and incompatible pin assignments. LMH7220MGX/NOPB requires dedicated layout for its differential output termination and ground-return path.