AD5381(RevA) Ver la hoja de datos (PDF) - Analog Devices
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AD5381 Datasheet PDF : 36 Pages
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AD5381
SPECIFICATIONS
AD5381-5 SPECIFICATIONS
Table 3. AVDD = 4.5 V to 5.5 V; DVDD = 2.7 V to 5.5 V, AGND = DGND = 0 V; External REFIN = 2.5 V;
all specifications TMIN to TMAX, unless otherwise noted
Parameter
AD5381-51 Unit
Test Conditions/Comments
ACCURACY
Output unloaded
Resolution
12
Bits
Relative Accuracy2 (INL)
±1
LSB max
Differential Nonlinearity (DNL)
±1
LSB max
Guaranteed monotonic over temperature
Zero-Scale Error
±4
mV max
Offset Error
±4
mV max
Measured at Code 32 in the linear region
Offset Error TC
±5
µV/°C typ
Gain Error
±0.024
% FSR max
At 25 °C
Gain Temperature Coefficient3
±0.06
2
% FSR max
ppm FSR/°C typ
TMIN to TMAX
DC Crosstalk3
0.5
LSB max
REFERENCE INPUT/OUTPUT
Reference Input3
Reference Input Voltage
2.5
V
±1% for specified performance, AVDD = 2 × REFIN + 50 mV
DC Input Impedance
1
MΩ min
Typically 100 MΩ
Input Current
±10
µA max
Typically ±30 nA
Reference Range
Reference Output4
1 to VDD/2
V min/max
Enabled via CR8 in the AD5381 control register.
CR10 selects the reference voltage.
Output Voltage
2.495/2.505 V min/max
At ambient. Optimized for 2.5 V operation. CR10 = 1.
1.22/1.28
V min/max
CR10 = 0
Reference TC
±10
ppm/°C max
Temperature Range: +25°C to +85°C
±15
ppm/°C max
Temperature Range: –40°C to +85°C
OUTPUT CHARACTERISTICS3
Output Voltage Range2
0/AVDD
V min/max
Short-Circuit Current
40
mA max
Load Current
±1
mA max
Capacitive Load Stability
RL = ∞
200
pF max
RL = 5 kΩ
1000
pF max
DC Output Impedance
0.5
Ω max
MONITOR PIN
Output Impedance
500
Ω typ
Three-State Leakage Current
100
nA typ
LOGIC INPUTS (EXCEPT SDA/SCL)3
DVDD = 2.7 V to 5.5 V
VIH, Input High Voltage
2
V min
VIL, Input Low Voltage
0.8
V max
Input Current
±10
µA max
Total for all pins. TA = TMIN to TMAX.
Pin Capacitance
10
pF max
LOGIC INPUTS (SDA, SCL ONLY)
VIH, Input High Voltage
0.7 DVDD
V min
SMBus compatible at DVDD < 3.6 V
VIL, Input Low Voltage
0.3 DVDD
V max
SMBus compatible at DVDD < 3.6 V
IIN, Input Leakage Current
±1
µA max
VHYST, Input Hysteresis
0.05 DVDD
V min
CIN, Input Capacitance
8
pF typ
Glitch Rejection
50
ns max
Input filtering suppresses noise spikes of less than 50 ns
Rev. A | Page 4 of 36
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