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

Electrical characteristics
RHF1401
2.3
Electrical characteristics (after 300 kRad)
Unless otherwise specified, the test conditions in the following tables are:
AVCC = DVCC = VCCBI =VCCBE = 2.5 V, F_s=20 Msps, F_IN= 15 MHz, V_IN at -1 dBFS,
VREFP = 1 V, INCM = 0.5 V, VREFM = 0 V, T_amb = 25 °C.
Table 6.
Symbol
Analog inputs
Parameter
Test conditions Min Typ Max Unit
V_IN-V_INB
Full-scale reference voltage
(FS)⁽¹⁾
VREFP = 1 V
(forced)
VREFM = 0 V
2
C_IN Input capacitance
7
Z_IN Input impedance
F_s = 20 Msps
3.3
ERB Effective resolution bandwidth⁽¹⁾
70
1. See Section 4: Definitions of specified parameters for more information.
V_pp
pF
kΩ
MHz
Table 7. Internal reference voltage
Symbol
Parameter
Test conditions Min Typ Max Unit
R_out
Output resistance of internal
reference
REFMODE = 0
internal reference
on
REFMODE = 1
internal reference
off
V_REFP
V_INCM
Top internal reference voltage
Input common mode voltage
REFMODE = 0
REFMODE = 0
Table 8. External reference voltage⁽¹⁾
Symbol
Parameter
Test conditions
30
Ω
7.5
kΩ
0.76 0.84 0.95 V
0.40 0.44 0.50 V
Min Typ Max Unit
V_REFP Forced top reference voltage REFMODE = 1
0.7
V_REFM Forced bottom ref voltage
REFMODE = 1
0
V_INCM Forced common mode voltage REFMODE = 1
0.2
1. See Figure 59.& Figure 60
1.4
V
0.5
V
1.1
V
Table 9. Static accuracy
Symbol
Parameter
Test conditions Min
DNL
INL
Differential non-linearity⁽¹⁾
Integral non-linearity⁽²⁾
Monotonicity and no missing
codes
F_in = 1.5 Msps
V_in at +1 dBFS
F_s = 1.5 Msps
1. See Figure 33 and Section 4 for more information. This parameter is not tested.
2. See Figure 34 and Section 4 for more information. This parameter is not tested.
Typ Max
±0.4
±3
Guaranteed
Unit
LSB
LSB
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Doc ID 13317 Rev 8