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AD5381 Datasheet PDF : 40 Pages
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Data Sheet
AD5381
AD5381-3 SPECIFICATIONS
AVDD = 2.7 V to 3.6 V; DVDD = 2.7 V to 5.5 V, AGND = DGND = 0 V; external REFIN = 1.25 V; all specifications TMIN to TMAX, unless
otherwise noted.
Table 2.
Parameter
ACCURACY
Resolution
Relative Accuracy2 (INL)
Differential Nonlinearity (DNL)
Zero-Scale Error
Offset Error
Offset Error TC
Gain Error
Gain Temperature Coefficient3
DC Crosstalk3
REFERENCE INPUT/OUTPUT
Reference Input3
Reference Input Voltage
DC Input Impedance
Input Current
Reference Range
Reference Output4
Output Voltage
Reference TC
Output Impedance
OUTPUT CHARACTERISTICS3
Output Voltage Range2
Short-Circuit Current
Load Current
Capacitive Load Stability
RL = ∞
RL = 5 kΩ
DC Output Impedance
MONITOR PIN
Output Impedance
Three-State Leakage Current
LOGIC INPUTS (EXCEPT SDA/SCL)3
VIH, Input High Voltage
VIL, Input Low Voltage
DVDD > 3.6
DVDD ≤ 3.6
Input Current
Pin Capacitance
LOGIC INPUTS (SDA, SCL ONLY)3
VIH, Input High Voltage
VIL, Input Low Voltage
IIN, Input Leakage Current
VHYST, Input Hysteresis
CIN, Input Capacitance
Glitch Rejection
AD5381-31 Unit
12
±1
±1
4
±4
±5
±0.05
±0.1
2
1
Bits
LSB max
LSB max
mV max
mV max
µV/°C typ
% FSR max
% FSR max
ppm FSR/°C typ
LSB max
Test Conditions/Comments
Output unloaded
Guaranteed monotonic over temperature
Measured at Code 16 in the linear region
At 25 °C
TMIN to TMAX
1.25
1
±1
1 to AVDD/2
V
MΩ min
µA max
V min/max
1.245/1.255
2.47/2.53
±10
±15
800
V min/max
V min/max
ppm/°C max
ppm/°C max
Ω typ
0/AVDD
40
±1
V min/max
mA max
mA max
200
1000
0.6
pF max
pF max
Ω max
1
kΩ typ
100
nA typ
2
V min
0.8
V max
0.6
V max
±1
µA max
10
pF max
0.7 × DVDD
0.3 × DVDD
±1
0.05 × DVDD
8
50
V min
V max
µA max
V min
pF typ
ns max
±1% for specified performance
Typically 100 MΩ
Typically ±30 nA
Enabled via CR8 in the AD5381 control register
CR10 selects the reference voltage.
At ambient; optimized for 1.25 V operation; CR10 = 0
CR10 = 1
Temperature Range: +25°C to +85°C
Temperature Range: –40°C to +85°C
DVDD = 2.7 V to 3.6 V
Total for all pins; TA = TMIN to TMAX
SMBus compatible at DVDD < 3.6 V
SMBus compatible at DVDD < 3.6 V
Input filtering suppresses noise spikes of less than 50 ns
Rev. E | Page 7 of 40
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