Low Noise, 0.5% Tolerance, 5MHz to 28MHz, Pin Configurable Filter/ADC Driver

The LTC6601-1 is a very easy-to-use fully differential 2nd order active RC filter and driver. On-chip resistors, capacitors, and amplifier bandwidth are trimmed to provide consistent and repeatable filter characteristics.

The filter characteristics are pin-strap configurable. Cutoff frequencies range from 5MHz to 28MHz. Gain is pin-strap programmable between –17dB and +17dB.

A three-state BIAS pin is provided to adjust amplifier power consumption. Select between high performance, low power (50% power reduction), and standby modes with the BIAS pin.

The LTC6601-1 is available in a compact 4mm × 4mm 16-pin leadless QFN package.

Applications

* Differential Input A/D Converter Driver

* Antialiasing/Reconstruction Filter

* Single-Ended to Differential Conversion/Amplification

* Low Voltage, Low Noise, Differential Signal Processing

* Common Mode Voltage Translation

* Pin Configurable Gain and Filter Response Up to 28MHz

* Few External Components Required

* Resistors Trimmed to 0.5% Typical

* Capacitors Trimmed to 0.5% Typical

* Very Low Noise: 80dB S/N in 100MHz Bandwidth

* Very Low Distortion (2VP-P):

* 1MHz: –100dBc 2nd, –123dBc 3rd

* 10MHz: –72dBc 2nd, –103dBc 3rd

* Adjustable Output Common Mode Voltage

* Rail-to-Rail Output Swing

* Power Configurability and Low Power Shutdown

* Tiny 0.75mm 20-Lead (4mm × 4mm) QFN Package