Datasheet

ac
R
s
ADCIN
C
5 pF
p
C
1.6 pF
h
Switch
Typical Values of the Input Circuit Components:
Switch Resistance (R ): 3.4 k
on
W
Sampling Capacitor (C ): 1.6 pF
h
Parasitic Capacitance (C ): 5 pF
p
Source Resistance (R ): 50
s
W
28x DSP
Source
Signal
3.4 k
W
R
on
TMS320F28027, TMS320F28026, TMS320F28023, TMS320F28022
TMS320F28021, TMS320F28020, TMS320F280200
SPRS523J –NOVEMBER 2008–REVISED OCTOBER 2013 www.ti.com
Figure 6-26. ADC Input Impedance Model
114 Electrical Specifications Copyright © 2008–2013, Texas Instruments Incorporated
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TMS320F28020 TMS320F280200