Features

• Pin Configurable Gain and Filter Response Up to 27MHz
• Low Power: 16mA at 3V
• Low Distortion (2VP-P)
     1MHz: –96dBc 2nd, –112dBc 3rd
     10MHz: –65dBc 2nd, –78dBc 3rd
• Few External Components Required
• Resistors Trimmed to 0.5% Accuracy Typical
• Capacitors Trimmed to 0.5% Accuracy Typical
• 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

Typical Application

Description

The LTC6601-2 is a low power, low distortion, very easy-to-use fully differential 2nd order active broadband 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 27MHz. Gain is pin-strap programmable between –17dB and +17dB.

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

The LTC6601 family comes in two options which trade off distortion and noise. The LTC6601-2 offers the lowest distortion at high frequencies. The LTC6601-1 is configured for lowest noise. Both are available in pin-compatible packages.

The LTC6601-2 is available in a compact 4mm × 4mm 20-pin leadless QFN package.