LMH6517

LMH6517 www.ti.com SNOSB19K – NOVEMBER 2008 – REVISED MARCH 2013 Low Power, Low Noise, IF and Baseband, Dual 16 bit ADC Driver With Digitally Controlled Gain Check for Samples: LMH6517 FEATURES 1 2 Accurate, 0.5dB Gain Steps 200Ω Resistive, Differential Input Low Impedance, Differential Output Disable Function for Each Channel Parallel Gain Control SPI Compatible Serial Bus Two Wire, Pulse Mode Control On Chip Register Stores Gain Setting Low Sensitivity of Linearity and Phase to Gain Setting Single 5V Supply Voltage Small Footprint WQFN Package APPLICATIONS Cellular Base Stations IF Sampling Receivers Instrumentation Modems Imaging KEY SPECIFICATIONS OIP3: 43dBm @ 200MHz Noise figure 5.5dB Gain step size of 0.5dB Gain step accuracy: 0.05dB Frequency Range of 1200 MHz Supply current 80mA per channel DESCRIPTION The LMH6517 contains two high performance, digitally controlled variable gain amplifiers (DVGA). It has been designed for use in narrowband and broadband IF sampling applications. Typically the LMH6517 drives a high performance ADC in a broad range of mixed signal and digital communication applications such as mobile radio and cellular base stations where automatic gain control (AGC) is required to increase system dynamic range. Each channel of LMH6517 has an independent, digitally controlled attenuator and a high linearity, differential output amplifier. Each block has been optimized for low distortion and maximum system...