LTC6605-14

` Two Matched 14MHz 2nd Order Lowpass Filters with Differential Amplifi ers Gain Match: ±0.25dB Max, Passband Phase Match: ±1.1° Max, Passband Single-Ended or Differential Inputs
` < 84dBc Distortion in Passband
` 2.1nV/Hz Op Amp Noise Density
` Pin-Selectable Gain (0dB/6dB/9.5dB)
` Pin-Selectable Power Consumption (0.35mA/ 16.2mA/33.1mA)
` Rail-to-Rail Output Swing Adjustable Output Common Mode Voltage Control Buffered, Low Impedance Outputs
` 2.7V to 5.25V Supply Voltage
` Small 22-Pin 6mm * 3mm * 0.75mm DFN Package

The LTC®6605-14 contains two independent, fully differential amplifi ers confi gured as matched 2nd order 14MHz lowpass fi lters. The f3dB of the fi lters is adjustable in the range of 12.4MHz to 20MHz and 25MHz. The internal op amps are fully differential, feature very low noise and distortion, and are compatible with 16-bit dynamic range systems.

The inputs of LTC6605-14 can accept singleended or differential signals. An input pin is provided for each amplifi er to set the common mode level of the differential outputs. Internal laser-trimmed resistors and capacitors determine a precise, very well matched (in gain and phase) 14MHz 2nd order fi lter response. A single optional external resistor per channel can tailor the frequency response for each amplifi er. Three-state BIAS pins determine each amplifi er's power consumption, allowing a choice between shutdown, medium power or full power.

The LTC6605-14 is available in a compact 6mm * 3mm 22-pin leadless DFN package and operates over a 40°C to 85°C temperature range.