LT6604-15 Datasheet | Linear Technology

Features n LT6604-15 Dual Very Low Noise, Differential Amplifier and 15MHz Lowpass Filter DESCRIPTION .. n n n n n n Dual Differential Amplifier with 15MHz Lowpass Filters 4th Order Filters Approximates Chebyshev Response Guaranteed Phase and Gain Matching Resistor-Programmable Differential Gain 76d B Signal-to-Noise (3V Supply, 2VP-P Output) Low Distortion, 2VP-P, 800Ω Load, VS = 3V 1MHz: 86d Bc 2nd, 90d Bc 3rd 10MHz: 63d Bc 2nd, 69d Bc 3rd Specified for Operation with 3V, 5V and ±5V Supplies Fully Differential Inputs and Outputs Adjustable Output mon Mode Voltage Small 4mm × 7mm × 0.75mm QFN Package The LT®6604-15 consists of two matched, fully differential amplifiers, each with a 4th order, 15MHz 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 76d B. 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 highly matched between the two channels. Gain for each channel is independently programmed using two external resistors. The LT6604-15 enables level shifting by providing an adjustable output mon mode voltage, making it ideal for directly interfacing to ADCs. The LT6604-15 is fully specified for 3V operation. The differential design enables outstanding performance at a 2VP-P signal level for a single 3V supply. See the back page of this datasheet for a plete list of related single and dual differential amplifiers with integrated 2.5MHz to 20MHz lowpass filters. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. APPLICATIONS n n n n n n n Dual Differential ADC Driver Plus Filter Single-Ended to Differential...