(China (Mainland))
Product Summary
The LMH6518SQE is a digitally controlled variable gain amplifier whose total gain can be varied from -1.16 dB to 38.8 dB for a 40 dB range in 2 dB steps. The -3 dB bandwidth is 900 MHz at all gains. Gain accuracy at each setting is typically 0.1 dB. When used in conjunction with a National Semiconductor Gsample/second (Gsps) ADC with adjustable full scale (FS) range, its gain adjustment will accommodate full scale input signals from 6.8 mVPP to 920 mVPP to get 700 mVPP nominal at the ADC input. The Auxiliary output ("+OUT Aux" and "-OUT Aux") follows the Main output and is intended for use in Oscilloscope trigger function circuitry but may have other uses in other applications.
Parametrics
Absolute maximum ratings: (1)Differential Input: ±1V; (2)Input Common Mode Voltage: 1V to 4V; (3)VCM and VCM_Aux: 2V; (4)SPI Inputs: 3.6V; (5)Maximum Junction Temperature: 150℃; (6)Storage Temperature Range: -65℃ to 150℃.
Features
Features: (1)Gain range 40 dB; (2)Gain step size 2 dB; (3)Min gain -1.16 dB; (4)Max gain 38.8 dB; (5)-3 dB BW 900 MHz; (6)Rise/fall time <500 ps; (7)Recovery time <5 ns; (8)Propagation delay variation 100 ps; (9)HD2 @ 100 MHz .50 dBc; (10)HD3 @ 100 MHz -53 dBc; (11)Input-referred noise (max gain) 0.98 nV/√Hz; (12)Over-voltage clamps for fast recovery.
Diagrams
| Image | Part No | Mfg | Description |  |
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 LMH6518SQE/NOPB |
National Semiconductor (TI) |
Special Purpose Amplifiers |
Data Sheet |
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LMH6518SQEVK |
National Semiconductor (TI) |
Amplifier IC Development Tools LMH6518SQ EVAL BOARD |
Data Sheet |
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LMH6518SQEVK/NOPB |
National Semiconductor (TI) |
Amplifier IC Development Tools LMH6518SQ EVAL BOARD |
Data Sheet |
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