Texas Instruments LMH6724MA

Overview

LMH6724MA from Texas Instruments is a dual-channel, current-feedback operational amplifier optimized for high-speed video and portable signal conditioning. It delivers 370 MHz unity-gain bandwidth (−3 dB, AV = 1), 260 MHz small-signal bandwidth at AV = +2, and 600 V/μs slew rate while consuming only 1 mA per channel from ±5 V supplies. Its 0.03% differential gain and 0.11° differential phase meet NTSC/PAL video line driver requirements.

For engineers reviewing the LMH6724MA datasheet, LMH6724MA pinout, LMH6724MA application, or LMH6724MA equivalent, this page provides verified pin functions, real-world video and A/D driver use cases, confirmed alternative parts with documented technical differences, and supply-chain support for industrial and portable design programs.

Technical Context

The LMH6724MA implements a current-feedback architecture with separate high-impedance non-inverting input and low-impedance inverting input (≈500 Ω), enabling gain-independent bandwidth tuning via feedback resistor selection. Its VIP10 complementary bipolar process ensures stable operation across ±2.5 V to ±6 V supplies (4.5–12 V total) without internal ground reference.

It supports dual-channel independent operation with matched AC performance: 100 MHz 0.1 dB gain flatness, 110 mA linear output current per channel, and <30 ns settling time to 0.05%. Channel crosstalk is −60 dBc at 10 MHz, and differential gain/phase are tested per EIA-343A at 4.43 MHz into 150 Ω.

Key Specifications

Pinout & Package

LMH6724MA is housed in an 8-pin SOIC package (D08A), 4.90 mm × 3.91 mm body size, with exposed pad not present. Thermal resistance is 166°C/W (junction-to-ambient).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed current-feedback amplifier applications.

Compared with LMH6724MA, LMH6723MA offers identical per-channel performance in a space-saving single-channel form factor, while THS3202DR trades video-specific fidelity for raw RF bandwidth and output current-making it unsuitable for broadcast video but viable for instrumentation front-ends.

Availability

LMH6724MA is available at Aetrix Electronics and suitable for video line driver, A/D converter driver, and portable video interface applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for LMH6724MA 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 over 50 years of innovation in high-performance op amps and signal chain solutions.

The LMH6724MA belongs to TI's LMH high-speed amplifier product line, designed specifically for portable, battery-powered video and instrumentation systems demanding low power, wide bandwidth, and broadcast-grade video fidelity.

FAQ

What is the recommended feedback resistor value for LMH6724MA at AV = +2?

The LMH6724MA datasheet specifies 1200 Ω as the standard feedback resistor for AV = +2 configurations with ±5 V supplies. This value delivers near-maximal bandwidth (260 MHz), optimal gain flatness (0.1 dB to 100 MHz), and stable operation without peaking. Lower values (e.g., 800 Ω) increase bandwidth but risk overshoot; higher values reduce bandwidth and degrade stability margin. LMH6724MA performance is validated using RF = 1200 Ω in all key electrical tables.

Does LMH6724MA support single-supply operation?

Yes, LMH6724MA supports true single-supply operation from 4.5 V to 12 V total supply range. It has no internal ground reference, allowing V− to be tied to 0 V and V+ to +5 V or +12 V. Input common-mode range extends to ±4.0 V (CMRR > 50 dB), and output swing reaches ±3.85 V (RL = ∞) at ±5 V supplies-enabling DC-coupled video and sensor interfaces without level-shifting circuitry. LMH6724MA functionality is fully specified across this range.

What is the maximum capacitive load LMH6724MA can drive without external compensation?

LMH6724MA is not characterized for direct capacitive load driving without series output resistance. For loads >10 pF, a series ROUT is mandatory: 48 Ω for 10 pF, 30 Ω for 47 pF, and 24 Ω for 100 pF (per Figure 19/20). These values limit peaking to ≤0.5 dB and preserve stability. Attempting to drive >10 pF directly causes gain peaking, ringing, or oscillation due to phase margin erosion. LMH6724MA output stage requires ROUT for any capacitive load beyond PCB trace capacitance.

How does LMH6724MA differ from LMH6723 in pin compatibility and layout?

LMH6724MA (dual) and LMH6723MA (single) share identical SOIC-8 (D08A) package dimensions and pinout mapping for shared pins: V+, V−, +IN A/B, −IN A/B, and OUT A/B. However, LMH6723MA repurposes pins 5 and 6 as N/C and OUTPUT (single channel), while LMH6724MA uses them for +IN B and −IN B. Thus, they are not pin-compatible-PCB layout must be redesigned when switching between single- and dual-channel variants. LMH6724MA requires two independent feedback networks, whereas LMH6723MA needs only one.

Is LMH6724MA suitable for driving ADC inputs with 100 Ω parallel termination?

Yes, LMH6724MA is explicitly rated for 100 Ω loads: its 110 mA linear output current and 0.01 Ω closed-loop output resistance (ROUT) ensure full-swing 4 VPP signals into 100 Ω with <1% gain error. Electrical characteristics tables (Section 6.5) validate performance at RL = 100 Ω, including output voltage range (±3.85 V), slew rate (600 V/μs), and settling time (30 ns to 0.05%). LMH6724MA drives ADC inputs directly without external buffers when terminated properly.