RHF1401_12 Datasheet, PDF (15/42 Pages) STMicroelectronics – Rad-hard 14-bit 30 Msps A/D converter

RHF1401
Electrical characteristics
Table 10. Digital inputs and outputs
Symbol
Parameter
Test conditions Min Typ Max Unit
Clock input
CT Clock threshold
CA
Square clock amplitude
(DC component = 1.25 V)
Digital inputs
V_IL
Logic "0" voltage
V_IH
Logic "1" voltage
Digital outputs
V_OL
Logic "0" voltage
V_OH
Logic "1" voltage
I_OZ
High impedance leakage
current
C_L
Output load capacitance
DV_CC = 2.5 V
DV_CC = 2.5 V
1.25
V
0.8
2.5 Vpp
V_CCBE = 2.5 V
V_CCBE = 2.5 V
0
0.75 x
V_CCBE
0.25 x
V_CCBE
V
V_CCBE V
I_OL = -10 µA
I_OH = 10 µA
OEB set to V_IH
High CLK
frequencies
0
V_CCBE
-0.25
-15
0.25 V
V
15 µA
15
pF
Table 11. Dynamic characteristics
Symbol
Parameter
Test conditions
Min Typ Max Unit
SFDR Spurious free dynamic range
70
91
SNR Signal to noise ratio
F_in = 15 MHz
66
70
THD Total harmonic distortion
F_s = 20 Msps
V_in at -1 dBFS
70
86
SINAD
Signal to noise and distortion
ratio
internal references
C_L = 6 pF
65
70
ENOB Effective number of bits
10.6 11.5
dBFS
dB
dB
dB
bits
Higher values of SNR, SINAD and ENOB can be obtained by increasing the full-scale range
of the analog input if the sampling frequency allows it.
Doc ID 13317 Rev 8
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