ADI LT6604IUFF-2.5#PBF

The LT6604-2.5 consists of two matched, fully differential amplifiers, each with a 4th order, 2.5MHz lowpass filter. The fixed frequency lowpass filter approximates a Chebyshev response. By integrating a filter and a differential amplifier, distortion and noise are made exceptionally low. At unity gain, the measured in-band signal-to-noise ratio is an impressive 86dB. At higher gains, the input referred noise decreases, allowing the part to process smaller input differential signals without significantly degrading the signal-to-noise ratio. Gain and phase are well matched between the two channels. Gain for each channel is independently programmed using two external resistors. The LT6604-2.5 enables level shifting by providing an adjustable output common mode voltage, making it ideal for directly interfacing to ADCs. The LT6604-2.5 is fully specified for 3V operation. The differential design enables outstanding performance up to a 4VP-P signal level for a single 3V supply.

• Dual Differential Amplifier with 2.5MHz Lowpass Filters
• 4th Order Filters Approximates Chebyshev Response
• Guaranteed Phase and Gain Matching
• Resistor-Programmable Differential Gain

• 86dB Signal-to-Noise (3V Supply, 1VRMS Output)

• Low Distortion (1MHz, 1VRMS Output, 800Ω Load) HD2: 92dBc HD3: 88dBc
• Specified for Operation with 3V, 5V and ±5V Supplies
• Fully Differential Inputs and Outputs
• Adjustable Output Common Mode Voltage
• Small 4mm×7mm×0.75mm OFN Package

• Dual Differential ADC Driver and Filter
• Single-Ended to Differential Converter
• Matched, Dual, Differential Gain or Filter Stage
• Common Mode Translation of Differential Signals
• High Speed ADC Antialiasing and DAC Smoothing in Wireless Infrastructure or Networking Applications
• High Speed Test and Measurement Equipment
• Medical Imaging