RHF1401_12 Datasheet, PDF (21/42 Pages) STMicroelectronics – Rad-hard 14-bit 30 Msps A/D converter

RHF1401
Electrical characteristics
2.5
Results for single ended input
Setup
● AVCC = DVCC = VCCBI = VCCBE = 2.5 V
● VREFP = 1 V
● VREFM = 0 V
● INCM = Vin/2
● REFMODE = 1 (internal references are disabled)
● Vin = 1 Vpp
● Tamb = 25 °C
● A square clock is applied
Unless other test conditions are specified.
In the following graphs, the input signal is seldom full scale.
Figure 35. Single-ended input configuration
GENERATOR
Single ended
input signal
C_f
VOCM
2.5 V
VCCBE
VIN ^VCCBI
AVCC
DVCC
INCM
External 1V
REFP
VINB
REFM
External
AM04566
Ground
C_f is a filter capacitor to cut the HF noise. Its value is 10 nF for input frequencies equal to or
below 20 kHz. The value of the capacitor is divided by two when the input frequency is
multiplied by 2.
Doc ID 13317 Rev 8
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