Texas Instruments LMH7220MKX/NOPB

Overview

LMH7220MKX/NOPB from Texas Instruments is a high-speed comparator with LVDS differential output, designed for precision timing and fast edge detection in signal acquisition systems. It delivers 2.9 ns propagation delay, 0.6 ns rise/fall times, 325 mV LVDS output swing into 100 Ω, operates from 2.7 V to 12 V supply, and supports −40°C to +125°C industrial temperature range - enabling use in oscilloscope triggering and pulse width modulation circuits.

For engineers reviewing the LMH7220MKX/NOPB datasheet, LMH7220MKX/NOPB pinout, LMH7220MKX/NOPB application, or LMH7220MKX/NOPB equivalent, key selection criteria include LVDS-compatible propagation delay dispersion (<0.86 ns over 20–100 mV overdrive), input voltage range extending 200 mV below ground, and guaranteed operation across full 2.7–12 V supply range with <10 mA supply current.

Technical Context

The LMH7220MKX/NOPB implements a current-mode LVDS output stage with internal 1.2 V common-mode reference and dual 3.25 mA current sources, enabling stable 325 mV differential swing into symmetrical 100 Ω termination. Its input stage features ESD-protected bipolar differential pair with 1.5 kΩ series resistors and base-clamp diodes, supporting rail-to-rail common-mode input down to −0.2 V (with 2.7 V supply) and CMRR ≥60 dB.

Propagation delay is measured as tPDLH = (tPDH + tPDL)/2 with defined overdrive conditions; skew between Q and Q outputs is tightly controlled (ΔtPDLH ≤ 0.09 ns at 100 mV overdrive, 2.7 V supply). Input overdrive dispersion (0.83 ns) and slew-rate dispersion (0.23 ns) are characterized to support high-fidelity timing-critical applications.

Key Specifications

Pinout & Package

The LMH7220MKX/NOPB is housed in a 6-pin SOT-23 package (SC-70), with 1.27 mm pitch, 2.2 mm × 1.35 mm footprint, and 1.1 mm max height - optimized for space-constrained high-density designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LMH7220MKX/NOPB, LMH7220MA/NOPB offers identical performance in a through-hole-friendly package, while ADCMP572BCPZ-R2 trades LVDS compatibility and wide supply range for raw speed - making LMH7220MKX/NOPB optimal for robust, standards-compliant, space-constrained LVDS interfacing.

Availability

LMH7220MKX/NOPB is available at Aetrix Electronics and suitable for oscilloscope triggering, pulse width modulation, and remote threshold detection requiring stable component supply across automotive, industrial, and test equipment programs.

Supply support for LMH7220MKX/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 delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, precision, and energy efficiency.

The LMH7220MKX/NOPB belongs to TI's high-speed comparator product line, engineered specifically for timing-critical signal conditioning in test & measurement, medical imaging, and industrial automation where LVDS interoperability and sub-3 ns latency are essential.

FAQ

What is the LVDS output compliance of the LMH7220MKX/NOPB?

The LMH7220MKX/NOPB provides fully compliant ANSI/TIA/EIA-644 LVDS output: 325 mV differential swing into 100 Ω, 1.2 V common-mode voltage, and matched rise/fall times (0.6 ns typical). Its internal current sources and CM feedback loop maintain these parameters across supply (2.7–12 V) and temperature (−40°C to +125°C), ensuring interoperability with standard LVDS receivers without external biasing components.

Does the LMH7220MKX/NOPB support ground-referenced input sensing?

Yes. The LMH7220MKX/NOPB input common-mode range extends to −0.2 V relative to GND (at 2.7 V supply), enabling direct connection to ground-level signals without negative supply or level-shifting circuitry. This capability is explicitly validated in the datasheet's VRI specification and supports applications like remote threshold detection and acquisition trigger circuits where input signals may swing below ground.

What is the maximum toggle rate supported by the LMH7220MKX/NOPB?

The LMH7220MKX/NOPB achieves up to 940 Mb/s toggle rate at 5 V supply (typical), as specified in the +5 V AC Electrical Characteristics table. This performance is enabled by its 2.9 ns propagation delay, 0.6 ns rise/fall times, and low overdrive dispersion (0.79 ns), making it suitable for high-speed serial decision circuits in pulse height analyzers and fast line receivers.

How does the LMH7220MKX/NOPB handle input overdrive variations?

The LMH7220MKX/NOPB exhibits low input overdrive dispersion: 0.79 ns (20–100 mV) and 0.43 ns (100 mV–1 V) at 5 V supply. This tight dispersion ensures consistent propagation delay across varying signal amplitudes - critical for time-of-flight measurements in oscilloscope triggering and peak detector applications where delay stability directly impacts measurement accuracy.

Is the LMH7220MKX/NOPB pin-compatible with other packages in the LMH7220 family?

No. The LMH7220MKX/NOPB uses a 6-pin SOT-23 (SC-70) package with specific pinout (IN−, GND, IN+, VCC, OUT Q, OUT Q). The LMH7220MA/NOPB uses an 8-pin SOIC package with different pin count and assignment. There is no pin-to-pin compatibility between these variants; PCB layout must be redesigned when switching packages.