参数资料
型号: AD5251BRU10
厂商: ANALOG DEVICES INC
元件分类: 数字电位计
英文描述: 32-Tap. Nonvolatile. Linear-Taper Digital Potentiometers in SOT23
中文描述: DUAL 10K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 64 POSITIONS, PDSO14
封装: MO-153AB-1, TSSOP-14
文件页数: 5/28页
文件大小: 859K
代理商: AD5251BRU10
AD5251/AD5252
10 k, 50 k, 100 k Versions. V
DD
= +3 V ± 10% or + 5 V ± 10%. V
SS
= 0 V or V
DD
/V
SS
= ± 2.5 V ± 10%. V
A
= +V
DD
, V
B
= 0 V,
–40°C < T
A
< +85°C, unless otherwise noted.
Table 2.
Parameter
Symbol
Conditions
DC CHARACTERISTICS
RHEOSTAT MODE
Resolution
N
AD5251/AD5252
Resistor Differential NL
2
R-DNL
R
WB
, R
WA
= NC, AD5251
R
WB
, R
WA
= NC, AD5252
Resistor Nonlinearity
2
R-INL
R
WB
, R
WA
= NC, AD5251
R
WB
, R
WA
= NC, AD5252
Nominal Resistor Tolerance
R
AB
/R
AB
T
A
= 25°C
Resistance Temperature
Coefficent
Wiper Resistance
R
W
I
W
= 1 V/R, V
DD
= 5 V
I
W
= 1 V/R, V
DD
= 3 V
Channel Resistance Matching
R
AB1
/R
AB2
R
AB
= 10 k, 50 k
R
AB
= 100 k
DC CHARACTERISTICS
POTENTIOMETER DIVIDER
MODE
Rev. 0 | Page 5 of 28
Min
0.75
1
0.75
2.5
20
Typ
1
±0.1
±0.25
±0.25
±1
650
Max
6/8
+0.75
+1
+0.75
+2.5
+20
Unit
Bits
LSB
LSB
LSB
LSB
%
ppm/°C
(R
AB
/R
AB
) × 10
6
/T
75
200
0.15
0.05
130
300
%
%
Differential Nonlinearity
3
Integral Nonlinearity
3
Voltage Divider
Temperature Coefficent
Full-Scale Error
Zero-Scale Error
DNL
INL
(V
W
/V
W
) × 10
6
/T
V
WFSE
V
WZSE
V
A
, V
B
, V
W
C
A
, C
B
AD5251
AD5252
AD5251
AD5252
Code = half scale
Code = full scale, AD5251
Code = full scale, AD5252
Code = zero scale, AD5251
Code = zero scale, AD5252
f = 1 kHz, measured to GND,
Code = half scale
f = 1 kHz, measured to GND,
Code = half scale
V
A
= V
B
= V
DD
/2
0.5
1
0.5
1.5
1
3
0
0
V
SS
±0.1
±0.3
±0.15
±0.5
15
0.3
1
0.3
1.2
85
+0.5
+1
+0.5
+1.5
0
0
1
3
V
DD
LSB
LSB
LSB
LSB
ppm/°C
LSB
LSB
LSB
LSB
V
pF
RESISTOR TERMINALS
Voltage Range
4
Capacitance
5
Ax, Bx
Capacitance
5
Wx
C
W
95
pF
Common-Mode Leakage
Current
DIGITAL INPUTS and OUTPUTS
Input Logic High
Input Logic Low
Output Logic High (SDA)
Output Logic Low (SDA)
I
CM
0.01
1
μA
V
IH
V
IL
V
OH
V
OL
I
WP
V
DD
=5 V, V
SS
= 0 V
V
DD
/V
SS
= +2.7 V/0 V or V
DD
/V
SS
= ±2.5 V
V
DD
= 5 V, V
SS
= 0 V
V
DD
/V
SS
= +2.7 V/0 V or V
DD
/V
SS
=±2.5 V
R
PULL-UP
= 2.2 k to V
DD
= 5 V, V
SS
= 0 V
R
PULL-UP
= 2.2 k to V
DD
= 5 V, V
SS
= 0 V
WP = V
DD
2.4
2.1
4.9
0.8
0.6
0.4
5
V
V
V
V
V
V
μA
Leakage Current
A0 Leakage Current
Input Leakage Current
(Other than WP and A0)
Input Capacitance
5
POWER SUPPLIES
Single-Supply Power Range
I
A0
I
I
C
I
V
DD
A0 = GND
V
IN
= 0 V or V
DD
V
SS
= 0 V
2.7
5
3
±1
5.5
μA
μA
pF
V
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