LTC6602 Datasheet | Linear Technology

Features n n n n LTC6602 Dual Matched, High Frequency Bandpass/Lowpass Filters DESCRIPTION .. n n n n n n n n n Matched Dual Filter/Driver, Ideal for RFID Readers Guaranteed Phase Matching to Within 2 Degrees Guaranteed Gain Matching to Within 0.2d B Configurable as Lowpass or Bandpass Programmable 5th Order Lowpass: 42k Hz to 900k Hz Programmable 4th Order Highpass: 4.2k Hz to 90k Hz Programmable Gain: 1×, 4×, 16×, 32× Simple Pin Programming or SPI Interface Low Noise: - 145d Bm/Hz (Input Referred) Low Distortion: - 75d Bc at 200k Hz Differential, Rail-to-Rail Inputs and Outputs Input Range Extends from 0V to 5V Low Voltage Operation: 2.7V to 3.6V Shutdown Mode 4mm × 4mm QFN Package The LTC®6602 is a dual, matched, programmable bandpass or lowpass filter and differential driver. The selectivity of the LTC6602, bined with its phase matching and dynamic range, make it ideal for filtering in RFID systems. With two degree phase matching between channels, the LTC6602 can be used in applications requiring highly matched filters, such as transceiver I and Q channels. Gain programmability, and the fully differential inputs and outputs, simplify implementation in most systems. Both channels of the LTC6602 consist of a programmable lowpass and highpass filter. For bandpass functionality, the lowpass filters are programmed for the upper cutoff frequency. For lowpass functionality, the highpass filters can be bypassed. The filter cutoff frequencies can be set with a guaranteed accuracy of 3% with the use of a single resistor. Alternatively, the filter cutoff frequencies can be controlled with an external clock. The LTC6602 operates on a single 2.7V to 3.6V supply and Features a low power shutdown mode. 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 Multiprotocol RFID Readers: EPC-GEN2, ISD and IPX IDEN, PHS, GSM Basestations Repeaters, Radio Links,...