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AD5381
SPECIFICATIONS
AD5381-5 SPECIFICATIONS
Table 3. AV
DD
= 4.5 V to 5.5 V; DV
DD
= 2.7 V to 5.5 V, AGND = DGND = 0 V; External REFIN = 2.5 V;
all specifications T
MIN
to T
MAX
, unless otherwise noted
Parameter
AD5381-5
1
ACCURACY
Resolution
12
Relative Accuracy
2
(INL)
±1
Differential Nonlinearity (DNL)
±1
Zero-Scale Error
±4
Offset Error
±4
Offset Error TC
±5
Gain Error
±0.024
±0.06
Gain Temperature Coefficient
3
2
DC Crosstalk
3
0.5
REFERENCE INPUT/OUTPUT
Reference Input
3
Reference Input Voltage
2.5
DC Input Impedance
1
Input Current
±10
Reference Range
1 to V
DD
/2
Reference Output
4
Rev. A | Page 4 of 36
Unit
Bits
LSB max
LSB max
mV max
mV max
μV/°C typ
% FSR max
% FSR max
ppm FSR/°C typ
LSB max
V
M min
μA max
V min/max
Test Conditions/Comments
Output unloaded
Guaranteed monotonic over temperature
Measured at Code 32 in the linear region
At 25 °C
T
MIN
to T
MAX
±1% for specified performance, AV
DD
= 2 × REFIN + 50 mV
Typically 100 M
Typically ±30 nA
Enabled via CR8 in the AD5381 control register.
CR10 selects the reference voltage.
At ambient. Optimized for 2.5 V operation. CR10 = 1.
CR10 = 0
Temperature Range: +25°C to +85°C
Temperature Range: –40°C to +85°C
DV
DD
= 2.7 V to 5.5 V
Total for all pins. T
A
= T
MIN
to T
MAX
.
SMBus compatible at DV
DD
< 3.6 V
SMBus compatible at DV
DD
< 3.6 V
Input filtering suppresses noise spikes of less than 50 ns
Output Voltage
Reference TC
2.495/2.505
1.22/1.28
±10
±15
0/AV
DD
40
±1
200
1000
0.5
500
100
2
0.8
±10
10
0.7 DV
DD
0.3 DV
DD
±1
0.05 DV
DD
8
50
V min/max
V min/max
ppm/°C max
ppm/°C max
V min/max
mA max
mA max
pF max
pF max
max
typ
nA typ
V min
V max
μA max
pF max
V min
V max
μA max
V min
pF typ
ns max
OUTPUT CHARACTERISTICS
3
Output Voltage Range
2
Short-Circuit Current
Load Current
Capacitive Load Stability
R
L
= ∞
R
L
= 5 k
DC Output Impedance
MONITOR PIN
Output Impedance
Three-State Leakage Current
LOGIC INPUTS (EXCEPT SDA/SCL)
3
V
IH
, Input High Voltage
V
IL
, Input Low Voltage
Input Current
Pin Capacitance
LOGIC INPUTS (SDA, SCL ONLY)
V
IH
, Input High Voltage
V
IL
, Input Low Voltage
I
IN
, Input Leakage Current
V
HYST
, Input Hysteresis
C
IN
, Input Capacitance
Glitch Rejection
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