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参数资料
| 型号： | AD5254EVAL |
| 厂商： | Analog Devices, Inc. |
| 元件分类： | 通用总线功能 |
| 英文描述： | Dual, 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers |
| 中文描述： | 双路、256抽头、非易失、I2C接口、数字电位器 |
| 文件页数： | 5/28页 |
| 文件大小： | 834K |
| 代理商： | AD5254EVAL |
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AD5253/AD5254
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
AD5253/AD5254
Resistor Differential
Nonlinearity
2
R-DNL
R
WB
, R
WA
= NC, AD5253
R
WB
, R
WA
= NC, AD5254
Resistor Nonlinearity
2
R-INL
R
WB
, R
WA
= NC, AD5253
R
WB
, R
WA
= NC, AD5254
Nominal Resistor Tolerance
R
AB
/R
AB
T
A
= 25°C
Resistance Temperature
Coefficient
(R
AB
/R
AB
) × 10
6
/T
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
Differential Nonlinearity
3
DNL
AD5253
AD5254
Integral Nonlinearity
3
INL
AD5253
AD5254
Voltage Divider
Temperature Coefficient
(V
W
/V
W
) × 10
6
/T
Code = Half scale
Full-Scale Error
V
WFSE
Code = Full scale, AD5253
Code = Full scale, AD5254
Zero-Scale Error
V
WZSE
Code = Zero scale, AD5253
Code = Zero scale, AD5254
RESISTOR TERMINALS
Voltage Range
4
V
A
, V
B
, V
W
Capacitance
5
Ax, Bx
C
A
, C
B
f = 1 kHz, measured to GND,
Code = Half scale
Capacitance
5
Wx
C
W
f = 1 kHz, measured to GND,
Code = Half scale
Common-Mode Leakage
Current
6
I
CM
V
A
= V
B
= V
DD
/2
DIGITAL INPUTS AND OUTPUTS
Input Logic High
V
IH
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
Input Logic Low
V
IL
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
Output Logic High (SDA)
V
OH
R
PULL-UP
= 2.2 k to V
DD
= 5 V, V
SS
= 0 V
Output Logic Low (SDA)
V
OL
R
PULL-UP
= 2.2 k to V
DD
= 5 V, V
SS
= 0 V
WP Leakage Current
I
WP
WP = V
DD
A0 Leakage Current
I
A0
A0 = GND
Input Leakage Current
(Other than WP and A0)
I
I
V
IN
= 0 V or V
DD
Input Capacitance
5
C
I
POWER SUPPLIES
Single-Supply Power Range
V
DD
V
SS
= 0 V
Dual-Supply Power Range
V
DD
/V
SS
Positive Supply Current
I
DD
V
IH
= V
DD
or V
IL
= GND
Rev. 0 | Page 5 of 28
Min
Typ
1
Max
6/8
Unit
Bits
0.75
1
0.75
2.5
20
±0.1
±0.25
±0.25
±1
+0.75
+1
+0.75
+2.5
+20
LSB
LSB
LSB
LSB
%
650
75
200
130
300
ppm/°C
0.5
1
0.5
1.5
0.15
0.05
±0.1
±0.3
±0.15
±0.5
+0.5
+1
+0.5
+1.5
%
%
LSB
LSB
LSB
LSB
1
3
0
0
V
SS
15
0.3
1
0.3
1.2
85
0
0
1
3
V
DD
ppm/°C
LSB
LSB
LSB
LSB
V
pF
95
pF
2.4
2.1
4.9
0.01
1
0.8
0.6
0.4
5
3
μA
V
V
V
V
V
V
μA
μA
2.7
±2.25
5
5
±1
5.5
±2.75
15
μA
pF
V
V
μA
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