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—5 kΩ VERSION
(VDD = 5 V ± 10%, or 3 V ± 10%; VA = +VDD; VB = 0 V; –40°C < TA < +125°C; unless otherwise noted.)
Table 1.
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
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_5K RAB = 5 kΩ, Code = 0x80
Total Harmonic Distortion
THDW
VA = 1 V rms, VB = 0 V, f = 1 kHz
VW Settling Time
tS
VA= 5 V, VB = 0 V, ±1 LSB error
band
Resistor Noise Voltage Density
eN_WB
RWB = 2.5 kΩ, RS = 0
Min
–1.5
–4
–30
–1.5
–1.5
–6
0
GND
2.4
2.1
2.7
Typ1 Max Unit
±0.1 +1.5
±0.75 +4
+30
45
50 120
LSB
LSB
%
ppm/°C
Ω
8
Bits
±0.1 +1.5 LSB
±0.6 +1.5 LSB
15
ppm/°C
–2.5 0
LSB
+2 +6 LSB
VDD
V
45
pF
60
pF
0.01 1
µA
1
nA
V
0.8 V
V
0.6 V
±1 µA
5
pF
5.5 V
3
8
µA
0.2 mW
±0.02 ±0.05 %/%
1.2
MHz
0.05
%
1
µs
6
nV/√Hz
Rev. 0 | Page 3 of 16
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