Datasheet

AD7264 Data Sheet
Rev. B | Page 4 of 28
Parameter Min Typ Max Unit Test Conditions/Comments
LOGIC INPUTS
Input High Voltage, V
INH
0.7 × V
DRIVE
V
Input Low Voltage, V
INL
0.8 V
Input Current, I
IN
±1 µA V
IN
= 0 V or V
DRIVE
Input Capacitance, C
IN
3
4
pF
LOGIC OUTPUTS
Output High Voltage, V
OH
V
DRIVE
− 0.2 V
Output Low Voltage, V
OL
0.4 V
Floating State Leakage Current ±1 µA
Floating State Output Capacitance
3
5 pF
Output Coding Twos complement
CONVERSION RATE
Conversion Time 19 × t
SCLK
ns
Track-and-Hold Acquisition Time
2
400 ns
Throughput Rate 1 MSPS AD7264
500
kSPS
AD7264-5
COMPARATORS
Input Offset
Comparator A and Comparator B ±2 ±4 mV T
A
= 25°C to 105°C only
Comparator C and Comparator D ±2 ±4 mV
Offset Voltage Drift 0.5 μV/°C All comparators
Input Common-Mode Range
3
0 to 4 V C
A
_C
B
V
CC
= 5 V
0 to 1.7 V C
A
_C
B
V
CC
= 2.7 V
Input Capacitance
3
4 pF
Input Impedance
3
1
GΩ
I
DD
Normal Mode (Static)
6
25 pF load, C
OUT
x = 0 V, V
CM
= AV
CC
/2,
V
OVERDRIVE
= 200 mV differential
Comparator A and Comparator B 3 µA C
A
_C
B
V
CC
= 3.3 V
6 8.5 µA C
A
_C
B
V
CC
= 5.25 V
Comparator C and Comparator D 60 µA C
C
_C
D
V
CC
= 3.3 V
120 170 µA C
C
_C
D
V
CC
= 5.25 V
Propagation Delay Time
2
V
CM
= AV
CC
/2, V
OVERDRIVE
= 200 mV
differential
High to Low, t
PHL
Comparator A and Comparator B
1.4
3.5
µs
C
A
_C
B
V
CC
= 2.7 V
0.95 µs C
A
_C
B
V
CC
= 5 V
Comparator C and Comparator D 0.20 0.32 µs C
C
_C
D
V
CC
= 2.7 V
0.13 µs C
C
_C
D
V
CC
= 5 V
Low to High, t
PLH
Comparator A and Comparator B 2 4 µs C
A
_C
B
V
CC
= 2.7 V
0.93 µs C
A
_C
B
V
CC
= 5 V
Comparator C and Comparator D 0.18 0.28 µs C
C
_C
D
V
CC
= 2.7 V
0.12 µs C
C
_C
D
V
CC
= 5 V
Delay Matching V
CM
= AV
CC
/2, V
OVERDRIVE
= 200 mV
differential
Comparator A and Comparator B
±250
ns
Comparator C and Comparator D
±10
ns