RF5609A

The RF5609A is a kind of seven-pole, six-zero elliptic low-pass filter with over 75 dB out-of-band rejection and less than ±0.5 dB of passband ripple. The device is a monolithic, switched-capacitor filter fabricated in a double-poly NMOS process. The device is self-contained and requires only an external clock trigger (either TTL or CMOS) and power supplies.

There are some features of RF5609A as follows: (1)easy to use; (2)no external components required; (3)small size: 8-pin mini-DIP; (4)wide power supply range: ±5 V to ±10 V; (5)dynamic range: 75 dB typ; (6)corner frequency range: 10 Hz to 25 kHz; (7)insertion loss: 0 dB typ. The typical applications include: (1)antialias filters; (2)reconstruction filters; (3)tracking filters; (4)audio analysis; (5)telecommunications; (6)portable instrumentation; (7)bimedical/geophysical instrumentation; (8)speech processing.

The following is about the absolute maximum ratings of RF5609A: (1)input voltage-any terminal with respect to substrate, pin (VSS): -0.4 to 21 V; (2)output short-circuit duration-any terminal: indefinite; (3)operating temperature: 0 to 70; (4)storage temperature: -55 to 125; (5)lead temperature (soldering, 10 sec): 300. Then is about the device characteristics and operating range limits: (1)supply voltages, VDD: +5 to +10 V; (2)supply voltages, VSS: -5 to -10 V; (3)quiescent current, IQ when no load: 16 mA typ and 21 mA max; (4)input clock levels, VIL: VSS min V and 0.8 V max; (5)input clock levels, VIH: 3.0 V min and VDD V max; (6)input impedance, RI: 10 M typ; (7)input impedance, CI: 15 pF max; (8)load impedance, RL: 10 k min; (9)load impedance, CL: 50 pF max.