LMH6515

LMH6515 www.ti.com SNOSAX4C – AUGUST 2007 – REVISED MARCH 2013 LMH6515 600 MHz, Digital Controlled, Variable Gain Amplifier Check for Samples: LMH6515 FEATURES 1 2 Adjustable Gain with a 31 dB Range Precise 1 dB Gain Steps Parallel 5-bit Gain Control On Chip Register Stores Gain Setting Fully Differential Signal Path Single Ended to Differential Capable 200Ω Input Impedance Small Footprint (4 mm x 4 mm) WQFN Package APPLICATIONS Cellular Base Stations IF Sampling Receivers Instrumentation Modems Imaging Differential Line Receiver KEY SPECIFICATIONS 600 MHz bandwidth @ 100Ω load 40 dBm OIP3 @ 75 MHz, 200Ω load 20 dB to 30 dB maximum gain Selectable output impedance of 200Ω or 400Ω 8.3 dB noise figure 5 ns gain step switching time 100 mA supply current DESCRIPTION The LMH6515 is a high performance, digitally controlled variable gain amplifier (DVGA). It combines precision gain control with a low noise, ultra-linear, differential amplifier. Typically, the LMH6515 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. When used in conjunction with a high speed ADC, system dynamic range can be extended by up to 32 dB. The LMH6515 has a differential input and output allowing large signal swings on a single 5V supply. It is designed to accept signals from RF elemen...