LTC6363 Family Precision, Low Power Differential Amplifier/ADC Driver Family FEATURES DESCRIPTION n Available with User Set Gain or Fixed Gain The LTC®6363 family consists of four fully differential, low of 0.5V/V, 1V/V, or 2V/V power, low noise amplifiers with rail-to-rail outputs opti- n 2.9nV/√Hz Input-Referred Noise mized to drive SAR ADCs. The LTC6363 is a stand-alone n 2mA Maximum Supply Current differential amplifier, where the gain is typically set using n 45ppm Max Gain Error four external resistors. The LTC6363-0.5, LTC6363-1, and n 0.5ppm/°C Max Gain Error Drift LTC6363-2 each have internal matched resistors to create n 94dB Min CMRR fixed gain blocks with gains of 0.5V/V, 1V/V, and 2V/V n 100µV Max Offset Voltage respectively. Each of the fixed-gain amplifiers features n 50nA Max Input Offset Current precision laser trimmed on-chip resistors for accurate, n Fast Settling: 720ns to 18-Bit, 8VP-P Output ultrastable gain and excellent CMRR. n 2.8V (±1.4V) to 11V (±5.5V) Supply Voltage Range Family Selection Table n Differential Rail-to-Rail Outputs PART NUMBERGAINCONFIGURATION n Input Common Mode Range Includes Ground n Low Distortion: 115dB SFDR at 2kHz, 18VP-P +IN + –OUT n 500MHz Gain-Bandwidth Product LTC6363 User Set –IN – +OUT n 35MHz –3dB Bandwidth n Low Power Shutdown: 20µA (VS = 3V) n 8-lead MSOP and 2mm × 3mm 8-Lead DFN Packages LTC6363-0.5 0.5V/V RF APPLICATIONS RI +IN + –OUT LTC6363-1 1V/V –IN – +OUT n 20-Bit, 18-Bit and 16-Bit SAR ADC Drivers RI n Single-Ended-to-Differential Conversion LTC6363-2 2V/V RF n Low Power ADC Drivers n Level Shifter All registered trademarks and trademarks are the property of their respective owners. n Differential Line Drivers n Battery-Powered Instrumentation TYPICAL APPLICATION DC-Coupled Interface from a Ground-ReferencedLTC6363-1 Driving LTC2378-20Single-Ended Input to an LTC2378-20 SAR ADCfIN = 2kHz, –1dBFS,131k-Point FFT 6V 0 VS = 6V, –1V –20 VOUTDIFF = 8.9VP-P V+ LTC6363-1 HD2 = –119.5dBc +IN 1050Ω 1050Ω –OUT 30.1Ω –40 HD3 = –128.3dBc 3.3nF 5V 2.5V SFDR = 118.3dB V+ THD = –115.3dB –60 V SNR = 102dB IN VREF VDD + SINAD = 101.8dB + AIN 20-BIT –80 VOCM LTC2378-20 3.3nF SAR ADC –100 0.1µF – AMPLITUDE (dBFS) – AIN 1Msps –120 GND –IN 1050Ω 1050Ω +OUT 30.1Ω V– 6363 TA01a –140 SHDN V– 3.3nF –160 0 50 100 150 200 250 300 350 400 450 500 6V –1V FREQUENCY (kHz) 6363 TA01b 6363fb For more information www.linear.com/LTC6363 1
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