RC42 / RC42SB Sallen&Key RC-Lowpass Filter (40kHz)

 

Key Features

  • Smoothing or Antialiasing Filter
  • Supply Voltage 4.5 - 5.5 V
  • Small Area 0.15mm²
  • Size x=286µm y=523µm
  • With OP02B or SB1
  • Uses N-Well resistors
  • Power-Down-Mode Ivdd < 1nA

Symbol

Block Diagram


Description

The RC42 and RC42SB macro cells are second order Sallen&Key lowpass filters for smoothing and antialiasing applications.
RC42 uses OP02B and RC41SB uses SB1 as operational amplifier. Using RC42SB an input and output range from VSS to VDD can be used. As passive elements poly capacitors and n-well resistors are used.

Pin List

Pin Description Capacitance
in analogue input x
pd power down 0.05pF
xpd power down not 0.05pF
out analogue output x
vdda positive analogue power supply x
vssa negative analogue power supply x
gnda analogue ground input x

 

Electrical Parameters

Parameter Symbol Min Typ Max Unit
Power Supply Range Vdd 4.5
5.0
5.5
V
Temperature Range Temp -50
25
125
deg
3dB Frequency (RC42) f0 21.6
40.81
93
kHz

For DC parameters please refer to

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