Texas Instruments LMH6654MF/NOPB

Overview

LMH6654MF/NOPB from Texas Instruments is a single-channel, voltage-feedback operational amplifier optimized for high-speed, low-noise signal conditioning. It delivers 250 MHz unity-gain bandwidth, 200 V/µs slew rate, and 4.5 nV/√Hz input voltage noise at ±5 V supply, enabling precision ADC driver and video signal amplification in portable instrumentation and consumer video systems.

For engineers reviewing the LMH6654MF/NOPB datasheet, LMH6654MF/NOPB pinout, LMH6654MF/NOPB application, or LMH6654MF/NOPB equivalent, key selection criteria include its SOT-23-5 package footprint, rail-to-rail output swing (−3.6 V to +3.4 V @ 100 Ω), −5.15 V to +3.7 V input common-mode range, and 4.5 mA/channel quiescent current under ±5 V operation.

Technical Context

The LMH6654MF/NOPB employs TI's VIP10™ complementary bipolar process to achieve unity-gain stability with 250 MHz bandwidth while maintaining low power consumption. Its voltage-feedback architecture supports fast settling (25 ns to 0.01%) and wide output swing-extending 150 mV below negative rail and within 1.3 V of positive rail-enabling true single-supply operation down to +5 V (with V− = GND).

Input stage design enables robust common-mode rejection (≥70 dB over −5 V to +3.7 V) and low distortion (−80 dBc second harmonic at 5 MHz), critical for driving SAR and pipeline ADCs. The amplifier's 1.7 pA/√Hz input current noise and 4.5 nV/√Hz voltage noise are specified across ≥0.1 MHz, confirming suitability for medium-bandwidth, low-source-impedance applications like active filters and pulse delay circuits.

Key Specifications

Pinout & Package

LMH6654MF/NOPB is housed in a 5-pin SOT-23 package (2.90 mm × 1.60 mm body size) with exposed pad for thermal enhancement. Pin 1 is OUTPUT; Pin 2 is V−; Pin 3 is +IN; Pin 4 is −IN; Pin 5 is V+.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LMH6654MF/NOPB, LMH6629MA/NOPB trades 2.7× higher power for 6× more bandwidth, while OPA695IDBVT offers 6.8× bandwidth but sacrifices 67% more input noise and incompatible pin assignment-making LMH6654MF/NOPB the optimal balance of speed, noise, and footprint for portable 100–250 MHz signal chains.

Availability

LMH6654MF/NOPB is available at Aetrix Electronics and suitable for ADC driver, consumer video, active filter, and pulse delay applications requiring stable component supply, consistent parametric performance across temperature (−40°C to +85°C), and long-term industrial lifecycle support.

Supply support for LMH6654MF/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-performance op-amps and signal chain solutions.

The LMH6654MF/NOPB belongs to TI's LMH high-speed amplifier family, designed specifically for portable, battery-powered instrumentation and video systems where low power, low noise, and wide bandwidth must coexist without compromise.

FAQ

What is the maximum recommended supply voltage for LMH6654MF/NOPB?

The absolute maximum supply voltage (V+ − V−) for LMH6654MF/NOPB is 13.2 V. Recommended operating range is ±2.5 V to ±6 V (i.e., total supply span of 5 V to 12 V). Operation beyond ±6 V risks permanent damage per TI's Absolute Maximum Ratings table; sustained use at ±6 V is permitted but requires thermal derating per R_θJA = 265 °C/W for the SOT-23-5 package.

Does LMH6654MF/NOPB support true single-supply operation with V− = GND?

Yes, LMH6654MF/NOPB supports true single-supply operation with V− = GND and V+ = +5 V. Its input common-mode range extends to −0.15 V (150 mV below GND), and output swings from 1.0 V to 3.7 V (no-load) or 1.0 V to 3.7 V (100 Ω load), enabling direct interface with 0–3.3 V logic and unipolar sensors without level-shifting circuitry.

What is the minimum load resistance LMH6654MF/NOPB can drive while maintaining 0.01% settling?

LMH6654MF/NOPB maintains 25 ns 0.01% settling time into a 100 Ω load, as verified in the ±5 V Electrical Characteristics table. Driving lower resistances (e.g., 50 Ω) increases output current demand and may degrade settling due to increased output stage loading; TI does not specify performance below 100 Ω, and use with <100 Ω loads requires external isolation resistor per Figure 41 in the datasheet.

Can LMH6654MF/NOPB replace LMH6654MFX/NOPB in existing designs?

Yes, LMH6654MF/NOPB and LMH6654MFX/NOPB share identical electrical specifications, pinout, and SOT-23-5 packaging. The "X" suffix denotes tape-and-reel packaging (3,000 units/reel), while "F" indicates cut-tape; both are functionally and mechanically interchangeable with no layout or firmware changes required.

Is LMH6654MF/NOPB suitable for driving 10-bit ADCs with 50 MSPS sampling rates?

Yes, LMH6654MF/NOPB is well-suited for driving 10-bit ADCs at 50 MSPS. Its 250 MHz bandwidth, 200 V/µs slew rate, and 25 ns 0.01% settling ensure full-scale transitions settle within one sample period (20 ns), while 4.5 nV/√Hz input noise contributes <0.25 LSB RMS noise at 10-bit resolution-well within typical ADC aperture jitter and quantization limits.