Slew rate and bandwidth define the gain-control window
The LMH6504MM is a variable gain amplifier from Texas Instruments' LMH® series, delivering a 1500V/µs slew rate and 150 MHz -3dB bandwidth from a single 7 V to 12 V supply span. That slew rate means the output can track a full-scale step in under 10 ns — essential for gain changes that must settle before the next sample in a high-speed data converter front-end. With 80 mA output current per channel, it can drive the sampling capacitor of a 12-bit ADC at 50 MSPS without an external buffer, or push a 50-ohm cable to a remote digitizer. The 11 mA supply current keeps the thermal budget in check for multi-channel arrays on a single board.
Industrial temperature grade and active lifecycle
Rated for -40°C to 85°C operation, the LMH6504MM suits outdoor telecom basestations, factory-floor instrumentation, and engine-bay sensor interfaces where the ambient temperature swings beyond the commercial range. The active lifecycle status means no last-time-buy clock is running — this part is available for both new designs and production replenishment through independent distribution, quoted to order against the BOM quantity. Note the RoHS non-compliant flag: the part contains lead in the solder finish or die-attach. For projects requiring full RoHS exemption documentation or a lead-free alternative, confirm the BOM's restricted-material policy before committing the line.
Package footprint and layout fit
Housed in an 8-VSSOP (3.00 mm × 3.00 mm body, 0.65 mm pitch), the LMH6504MM fits the same land pattern as the standard 8-MSOP/TSSOP. The small footprint leaves room for the decoupling capacitor pair (0.1 µF + 10 µF) within 5 mm of the supply pins — critical for maintaining the 1500V/µs slew rate without supply droop. Surface-mount assembly with bulk packaging means the parts arrive in a tube or tray, not tape-and-reel — factor this into the pick-and-place feeder setup if the line is configured for reels only.
Input bias and offset — DC accuracy for the gain control node
The 1.4 µA input bias current and 10 mV input offset voltage set the floor for DC accuracy at the gain-setting pin. For a variable gain amp where the control voltage is derived from a DAC, the 10 mV offset translates to a gain error of roughly 0.5 dB at the mid-range — acceptable for AGC loops but worth budgeting if the system requires better than ±0.25 dB set-point accuracy.