LTC1569CS8-6#PBF

LTC1569-6 is a linear phase, DC accurate, low power, 10th order low pass filter. This device is a sampled data filter does not require an external clock yet its cut-off frequency can be set with a single external resistor with a typical accuracy of 3.5% or better. The external resistor programs an internal oscillator whose frequency is divided by either 1, 4 or 16 prior to being applied to the filter network. Pin 5 determines the divider setting. Thus, upto three cut-off frequencies can be obtained for each external resistor value. Using various resistor values and divider settings, the cut-off frequency can be programmed over a range of six octaves. Alternatively, the cut-off frequency can be set with an external clock and the clock-to-cut-off frequency ratio is 64:1. It is used in application such as data communication filters for 3V operation, linear phase and phase matched filters for I/Q signal processing, pin programmable cut-off frequency low pass filters etc.

• One external R sets cut-off frequency, root raised cosine response
• Power supply current is 3mA typical at
• Upto 64KHz cut-off on a single 3V supply
• DC accurate, VOS(MAX) = 5mV
• Low power modes, differential or single-ended inputs
• Total harmonic distortion is 80dB typical at (fIN = 3KHz, 1.5VP-P, fCUTOFF = 32KHz)
• Operates from 3V to ±5V supplies
• Filter gain is 0.05dB typical at (VS = 5V, fCLK = 4.096MHz)
• Operating temperature is 0°C to 70°C
• Package style is 8-lead narrow SO

Notes

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