HV257
Electrical Characteristics
(over operating conditions, unless otherwise specified)
Sample and Hold
Symbol
t
AQ
V
PED
R
SW
C
H
V
DROOP
V
SIG
C
SIG
Parameter
Acquisition time
Pedestal voltage
Sample and Hold Switch resistance
Sample and Hold capacitor
Voltage droop rate during hold time
relative to input
Input signal voltage range
V
SIG
input capacitance
Min
-
-
-
-
-
0
-
Typ
4.0
1.0
5.0
10
6.0
-
33
Max
-
-
-
12
-
5.0
-
Units
µs
mV
kΩ
pF
V/s
V
pF
Conditions
---
input referred
---
---
output referred
---
---
Logic Decoder
Symbol
t
SU
t
H
V
IH
V
IL
I
IH
I
IL
C
IN
Parameter
Set-up time-address to enable
Hold time-address to enable bar
Input logic high voltage
Input logic low voltage
Input logic high current
Input logic low current
Logic input capacitance
Min
75
75
2.4
0
-
-1.0
-
Typ
-
-
-
-
-
-
-
Max
-
-
V
DD
1.2
1.0
-
15
Units
ns
ns
V
V
µA
µA
pF
Conditions
---
---
---
---
V
IL
= V
DD
V
IL
= 0V
---
Decoder Truth Table
A
4
L
L
L
L
A
3
L
L
L
L
A
2
L
L
L
L
A
1
L
L
H
H
A
0
L
H
L
H
EN
H
H
H
H
Selected
S/H
0
1
2
3
Sample and Hold Timing
t
SU
t
H
A0-A4
EN
Hold
Sample
t
R/F
Hold Step
(V
pedestal
)
Hold
HVOpamp
H
H
X
H
H
X
H
H
X
H
H
X
L
H
X
H
H
L
30
31
All Open
Acquisition Window
Temperature Diode
Symbol
PIV
V
F
I
F
T
C
Parameter
Peak inverse voltage
Forward diode drop
Forward diode current
V
F
temperature coefficient
Min
-
-
-
-
Typ
-
0.6
-
-2.2
Max
5.0
-
100
-
Units
V
V
µA
mV/°C
Conditions
cathode to anode
I
F
= 100µA, anode to cathode at T
A
= 25°C
anode to cathode
anode to cathode
3
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