LT6600-15

• Product Introduction

The LT6600-15 features a very low noise, differential amplifier, and 15MHz low-pass filter

peculiarity Two external resistors can be used to set the differential gain Adjustable output common-mode voltage 3V, 5V, ±5V operating power supplies are used, and technical specifications are developed for these operating power supplies 0.5dB ripple fourth-order low-pass filter with 15MHz cut-off frequency 76dB S/N (with 3V supply and 2VP-P output) Low distortion, 2VP-P, 800Ω load, VS = 3V         1MHz: 86dBc (2nd order), 90dBc (3rd order)         10MHz: 63dBc (2nd order), 69dBc (3rd order) Fully differential inputs and outputs Compatible with the pin configurations of common differential amplifiers SO-8 package description ®The LT 6600-15 combines a fully differential amplifier with a 4th order 15MHz low-pass filter that approximates the frequency response of Chebyshev. Most differential amplifiers require the use of a lot of precise external components to trim the gain and bandwidth. The difference is that with the LT6600-15, the differential gain can be set by two external resistors, and the filter's 15MHz cutoff frequency and passband ripple are set internally. The LT6600-15 also provides the level shift necessary to set its output common-mode voltage to accommodate the A/D reference voltage requirements. The LT6600-15 uses a proprietary internal architecture that integrates an antialiasing filter and a differential amplifier/driver without sacrificing distortion or low-noise performance. Under unity gain conditions, an impressive in-band signal-to-noise ratio of 76dB was measured. At higher gain conditions, the input-induced noise decreases, allowing the device to handle smaller input differential signals without significant degradation of the output signal-to-noise ratio. The LT6600-15 also has the ability to operate under low voltage conditions. The differential design provides exceptional performance for a single 2VP-P signal level, and the device can operate from a single 3V operating supply. The LT6600-15 is available in an SO-8 package and is pin-compatible with stand-alone differential amplifiers. apply High-speed ADC antialiasing and DAC filtering in network or cellular applications High-speed test and measurement equipment Medical imaging Drop-in replacement for differential amplifiers