Datasheet

AD7225
Rev. C | Page 4 of 24
SINGLE SUPPLY
V
DD
= 15 V ± 5%; V
SS
= AGND = DGND = 0 V; V
REF
x = 10 V, unless otherwise noted. All specifications T
MIN
to T
MAX
,
unless otherwise noted.
Table 2.
Parameter K, B Versions
1
L, C Versions
1
Unit Conditions/Comments
STATIC PERFORMANCE
Resolution 8 8 Bits
Total Unadjusted Error
2
±2 ±1 LSB max
Differential Nonlinearity
2
±1 ±1 LSB max Guaranteed monotonic
REFERENCE INPUT
Voltage Range 2 to (V
DD
− 4) 2 to (V
DD
− 4) V min to V max
Input Resistance 11 11 kΩ min
Input Capacitance
3
50 50 pF max Occurs when each DAC is loaded with all 1s
Channel-to-Channel Isolation
2, 3
60 60 dB min V
REF
= 10 V p-p sine wave at 10 kHz
AC Feedthrough
2, 3
−70 −70 dB max V
REF
= 10 V p-p sine wave at 10 kHz
DIGITAL INPUTS
Input High Voltage, V
INH
2.4 2.4 V min
Input Low Voltage, V
INL
0.8 0.8 V max
Input Leakage Current ±1 ±1 μA max V
IN
= 0 V or V
DD
Input Capacitance
3
8 8 pF max
Input Coding Binary Binary
DYNAMIC PERFORMANCE
Voltage Output Slew Rate
3
2 2 V/μs min
Voltage Output Settling Time
3
4 4 μs max
Digital Feedthrough
2, 3
10 10 nV sec typ Code transition all 0s to all 1s
Digital Crosstalk
2, 3
10 10 nV sec typ Code transition all 0s to all 1s
Minimum Load Resistance 2 2 kΩ min V
OUT
= 10 V
POWER SUPPLIES
V
DD
Range 14.25/15.75 14.25/15.75 V min to V max For specified performance
I
DD
10 10 mA max Outputs unloaded; V
IN
= V
INL
or V
INH
SWITCHING CHARACTERISTICS
3
t
1
50 50 ns min Write pulse width
t
2
0 0 ns min Address to write setup time
t
3
0 0 ns min Address to write hold time
t
4
50 50 ns min Data valid to write setup time
t
5
0 0 ns min Data valid to write hold time
t
6
50 50 ns min Load DAC pulse width
1
Temperature range is as follows for all versions: −40°C to +85°C.
2
Sample tested at 25°C to ensure compliance.
3
Switching characteristics apply for single-supply and dual-supply operation.