AD5245(Rev0) 查看數據表（PDF） - Analog Devices
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AD5245 Datasheet PDF : 16 Pages
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AD5245
ELECTRICAL CHARACTERISTICS—10 kΩ, 50 kΩ, 100 kΩ VERSIONS
(VDD = 5 V ± 10%, or 3 V ± 10%; VA = VDD; VB = 0 V; –40°C < TA < +125°C; unless otherwise noted.)
Table 2.
Parameter
Symbol
Conditions
DC CHARACTERISTICS—RHEOSTAT MODE
Resistor Differential Nonlinearity2
Resistor Integral Nonlinearity2
Nominal Resistor Tolerance3
R-DNL
R-INL
∆RAB
RWB, VA = no connect
RWB, VA = no connect
TA = 25°C
Resistance Temperature Coefficient
∆RAB/∆T
VAB = VDD,
Wiper = no connect
Wiper Resistance
RW
VDD = 5 V
DC CHARACTERISTICS—POTENTIOMETER DIVIDER MODE (Specifications apply to all VRs)
Resolution
N
Differential Nonlinearity4
DNL
Integral Nonlinearity4
INL
Voltage Divider Temperature Coefficient
∆VW/∆T
Code = 0x80
Full-Scale Error
VWFSE
Code = 0xFF
Zero-Scale Error
VWZSE
Code = 0x00
RESISTOR TERMINALS
Voltage Range5
Capacitance6 A, B
VA,B,W
CA,B
f = 1 MHz, measured to
GND, Code = 0x80
Capacitance6 W
CW
f = 1 MHz, measured to
GND, Code = 0x80
Shutdown Supply Current7
IDD_SD
VDD = 5.5 V
Common-Mode Leakage
ICM
VA = VB = VDD/2
DIGITAL INPUTS AND OUTPUTS
Input Logic High
VIH
Input Logic Low
VIL
Input Logic High
VIH
VDD = 3 V
Input Logic Low
VIL
VDD = 3 V
Input Current
Input Capacitance6
IIL
VIN = 0 V or 5 V
CIL
POWER SUPPLIES
Power Supply Range
VDD RANGE
Supply Current
Power Dissipation8
IDD
VIH = 5 V or VIL = 0 V
PDISS
VIH = 5 V or VIL = 0 V,
VDD = 5 V
Power Supply Sensitivity
PSS
∆VDD = +5 V ± 10%,
Code = Midscale
DYNAMIC CHARACTERISTICS6, 9
Bandwidth –3dB
BW
RAB = 10 kΩ/50 kΩ/100 kΩ,
Code = 0x80
Total Harmonic Distortion
THDW
VA =1 V rms, VB = 0 V,
f = 1 kHz, RAB = 10 kΩ
VW Settling Time (10 kΩ/50 kΩ/100 kΩ)
tS
VA = 5 V, VB = 0 V,
±1 LSB error band
Resistor Noise Voltage Density
eN_WB
RWB = 5 kΩ, RS = 0
Min
–1
–2
–30
–1
–1
–3
0
GND
2.4
2.1
2.7
Typ1
±0.1
±0.25
45
50
±0.1
±0.3
15
–1
1
45
60
0.01
1
5
3
±0.02
Max Unit
+1 LSB
+2 LSB
+30 %
ppm/°C
120 Ω
8
Bits
+1 LSB
+1 LSB
ppm/°C
0
LSB
3
LSB
VDD
V
pF
pF
1
µA
nA
V
0.8 V
V
0.6 V
±1 µA
pF
5.5 V
8
µA
0.2 mW
±0.05 %/%
600/100/40
0.05
2
9
kHz
%
µs
nV/√Hz
Rev. 0 | Page 4 of 16
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