LTC1565-31 Datasheet | Linear Technology

Features n 7th Order, 650k Hz Linear Phase Filter in an SO-8 n Differential Inputs and Outputs n Operates on a Single 5V or a ±5V Supply n Low Offset: 5m V Typical n 75d B THD and SNR n 78d B SNR n Shutdown Mode n Requires No External ponents n Requires No External Clock Signal APPLICATIONS n CDMA Basestations n Data munications n Antialiasing Filters n Smoothing or Reconstruction Filters n Matched Filter Pairs n Replacement for LC Filters TYPICAL APPLICATION Single 5V Supply, Differential 650k Hz Lowpass Filter VIN+ VIN- 0.1μF 1 +IN 2 - IN +OUT 8 7 - OUT 3 GND V+ 6 4 V- SHDN 5 VOUT+ VOUT- 5V 5V 0.1μF 15645-31 TA01 650k Hz Continuous Time, Linear Phase Lowpass Filter DESCRIPTION The LTC®1565-31 is a 7th order, continuous time, linear phase lowpass filter. The selectivity of the LTC1565-31, bined with its linear phase and dynamic range, make it suitable for filtering in data munications or data acquisition systems. The filter attenuation is 36d B at 2× f CUTOFF and at least 72d B for frequencies above 3× f CUTOFF. Unlike parable LC filters, the LTC1565-31 achieves this selectivity with a linear phase response in the passband. With 5% accuracy of the cutoff frequency, the LTC1565-31 can be used in applications requiring pairs of matched filters, such as transceiver I and Q channels. Furthermore, the differential inputs and outputs provide a simple interface for these wireless systems. With a single 5V supply and a 2VP-P input, the LTC1565-31 Features an impressive spurious free dynamic range of 75d B. The maximum signal-to-noise ratio is 78d B and it is achieved with a 2.5VP-P input signal. The LTC1565-31 Features a shutdown mode where power supply current is typically less than 10μA. For W-CDMA, 3G, CDMA 2000 and other cellular and noncellular cutoff frequencies or single-ended I/O, please contact LTC Marketing for additional information. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear...