参数资料
型号: AD5258EVAL
厂商: Analog Devices Inc
文件页数: 18/24页
文件大小: 0K
描述: BOARD EVAL FOR AD5258 DGTL POT
标准包装: 1
主要目的: 数字电位器
已用 IC / 零件: AD5258
已供物品:
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Data Sheet
AD5258
Rev. D | Page 3 of 24
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
VDD = VLOGIC = 5 V ± 10%, or 3 V ± 10%; VA = VDD; VB = 0 V; 40°C < TA < +85°C, unless otherwise noted.
Table 1.
Parameter
Symbol
Conditions
Min
Max
Unit
DC CHARACTERISTICS—RHEOSTAT MODE
Resistor Differential Nonlinearity
R-DNL
RWB, VA = no connect
LSB
1 k
1.5
±0.3
+1.5
10 k/50 k/100 k
0.25
±0.1
+0.25
Resistor Integral Nonlinearity
R-INL
RWB, VA = no connect
LSB
1 k
5
±0.5
+5
10 k/100 k
0.5
±0.1
+0.5
50 k
0.25
±0.1
+0.25
Nominal Resistor Tolerance
TA = 25°C, VDD = 5.5 V
1 k
RAB
0.9
1.5
k
10 k/50 k/100 k
ΔRAB
30
+30
%
Resistance Temperature Coefficient
(ΔRAB × 106)/(RAB × ΔT)
Code = 0x00/0x20
200/15
ppm/°C
Total Wiper Resistance
RWB
Code = 0x00
75
350
DC CHARACTERISTICS—POTENTIOMETER
DIVIDER MODE
Differential Nonlinearity
DNL
LSB
1 k
1
±0.3
+1
10 k/50 k/100 k
0.25
±0.1
+0.25
Integral Nonlinearity
INL
LSB
1 k
1
±0.3
+1
10 k/50 k/100 k
0.25
±0.1
+0.25
Full-Scale Error
VWFSE
Code = 0x3F
LSB
1 k
6
3
0
10 k
1
0.3
0
50 k/100 k
1
0.1
0
Zero-Scale Error
VWZSE
Code = 0x00
LSB
1 k
40°C < TA < 85°C
0
3
5
LSB
85°C < TA < 125°C
6
LSB
10 k
40°C < TA < 85°C
0
0.3
1
LSB
85°C < TA < 125°C
1.5
LSB
50 k/100 k
0
0.1
0.5
LSB
Voltage Divider Temperature Coefficient
(ΔVW × 106)/(VW × ΔT)
Code = 0x00/0x20
120/15
ppm/°C
RESISTOR TERMINALS
Voltage Range
VA, VB ,VW
GND
VDD
V
Capacitance A, Capacitance B
CA, CB
f = 1 MHz, measured to
GND, code = 0x20
45
pF
Capacitance W
CW
f = 1 MHz, measured to
GND, code = 0x20
60
pF
Common-Mode Leakage
ICM
VA = VB = VDD/2
10
nA
DIGITAL INPUTS AND OUTPUTS
Input Logic High
VIH
0.7 × VL
VL + 0.5
V
Input Logic Low
VIL
0.5
+0.3 × VL
V
Leakage Current
IIL
A
SDA, AD0, AD1
VIN = 0 V or 5 V
0.01
±1
SCL – Logic High
VIN = 0 V
2.5
1.4
+1
SCL – Logic Low
VIN = 5 V
0.01
±1
Input Capacitance
CIL
5
pF
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