LMH6518SQEVK

Sample & Buy Product Folder Support & Community Tools & Software Technical Documents LMH6518 SNOSB21D – MAY 2008 – REVISED SEPTEMBER 2016 LMH6518 900 MHz, Digitally Controlled, Variable Gain Amplifier 1 Features 3 Description • • • The LMH6518 device is a digitally controlled variable gain amplifier whose total gain is 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 TI's Gsample/second (Gsps) ADC with adjustable full-scale (FS) range, the LMH6518 gain adjustment accommodates 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. 1 • • • • • • • • • • • Gain Range: 40 dB Gain Step Size: 2 dB Combined Gain Resolution With Gsps ADCs: 8.5 mdB Minimum Gain: −1.16 dB Maximum Gain: 38.8 dB −3 dB BW: 900 MHz Rise and Fall Time: