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Product Detailed Parameters
- Description：IC VARIABLE GAIN 1 CIRC 14SOIC
- Series：LMH®
- Mfr：National Semiconductor
- Package：Bulk
- Amplifier Type：Variable Gain
- Number of Circuits：1
- Output Type：-
- Slew Rate：1800V/µs
- Gain Bandwidth Product：-
- Current - Input Bias：9 µA
- Voltage - Input Offset：-
- Current - Supply：27mA
- Current - Output / Channel：90 mA
- Voltage - Supply Span (Min)：5 V
- Voltage - Supply Span (Max)：12 V
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：14-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：14-SOIC
- -3db Bandwidth：130 MHz
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Overview
The LMH6502MAX/NOPB is a wideband, low power, linear-in-dB variable gain amplifier manufactured by Texas Instruments. It features a DC coupled differential input voltage controlled gain stage followed by a high-speed current feedback operational amplifier capable of driving low impedance loads. The device offers a gain adjustment range exceeding 70dB for frequencies up to 10MHz. Power consumption is specified at 300mW with a bandwidth of 130MHz. Output referred DC offset voltage remains below 350mV across the entire gain control voltage range. Device-to-device gain matching is within ±0.6dB at maximum gain.
Feature Summary
- Linear-in-dB gain control suitable for automatic gain control applications
- Differential inputs providing common mode rejection for low level amplification
- High slew rate and heavy load drive capability via current feedback output
Applications
- Automatic Gain Control (AGC) circuits
- Low level signal amplification over long wires
- Wideband variable gain stages requiring linear dB response
Procurement Notes
Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor, when sourcing this component. Confirm the package type matches the MAX suffix requirements for your PCB layout. Ensure the supply voltage and ground pin configurations align with single or dual supply designs, particularly regarding the virtual half-supply requirement for single supply operation.
Selection Notes
Select this component when a wideband variable gain amplifier with linear-in-dB characteristics is required. It is suitable for applications needing high slew rates and the ability to drive heavy load currents. Consider the differential input configuration if common mode rejection is necessary for the signal path.
Part Context
This part belongs to the LMH6502 series of wideband variable gain amplifiers. It is functionally similar to other devices in the family such as the LMH6503 and LMH6505, which offer comparable wideband performance and low power consumption profiles for signal conditioning tasks.
Replacement Considerations
Potential substitutes include the LMH6503MAX and LMH6505MAX from Texas Instruments. Verify compatibility regarding gain linearity type and specific electrical parameters before substitution.
