LTC1066-1 - 14-Bit DC Accurate Clock-Tunable, 8th Order Elliptic Or Linear Phase Lowpass Filter
The LTC1066-1 is an 8th order elliptic lowpass Filter which simultaneously provides clock-tunability and DC accuracy. The unique and proprietary architecture of the Filter allows 14 bits of DC gain linearity and a maximum of 1.5mV DC offset. An external RC is required for DC accurate operation. With 7.5V supplies, a 20k resistor and a 1F capacitor, the cutoff frequency CAN be tuned from 800Hz to 100kHz. A clock-tunable 10Hz to 100kHz operation CAN also be achieved (see Typical Application section).
The Filter does not require any external active components such as input/output Buffers The input/output impedance is 500Mohms/0.1ohms and the output of the Filter CAN source or sink 40mA. When pin 8 is connected to V + , the clock-to-cutoff frequency ratio is 50:1 and the input signal is sampled twice per Clock cycle to lower the risk of aliasing. For frequencies up to 0.75fCUTOFF , the passband ripple is 0.15dB. The gain at fCUTOFF is -1dB and the Filters stopband attenuation is 80dB at 2.3fCUTOFF . Linear phase operation is also available with a clock-to-cutoff frequency ratio of 100:1 when pin 8 is connected to ground.
The LTC1066-1 is available in an 18-pin SO Wide package..
By Linear Technology Corporation
|LTC1066-1 Pb-Free||LTC1066-1 Cross Reference||LTC1066-1 Schematic||LTC1066-1 Distributor|
|LTC1066-1 Application Notes||LTC1066-1 RoHS||LTC1066-1 Circuits||LTC1066-1 footprint|