參數(shù)資料
型號： AD5254EVAL
廠商： Analog Devices, Inc.
元件分類： 通用總線功能
英文描述： Dual, 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers
中文描述： 雙路、256抽頭、非易失、I2C接口、數(shù)字電位器
文件頁數(shù)： 3/28頁
文件大小： 834K
代理商： AD5254EVAL
AD5253/AD5254
ELECTRICAL CHARACTERISTICS
1 k VERSION
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 1.
Parameter
Symbol
Conditions
DC CHARACTERISTICS—RHEOSTAT MODE
Resolution
N
AD5253/AD5254
Resistor Differential Nonlinearity
2
R-DNL
R
WB
, R
WA
= NC, V
DD
= 5.5V, AD5253
R
WB
, R
WA
= NC, V
DD
= 5.5V, AD5254
R
WB
, R
WA
= NC, V
DD
= 2.7V, AD5253
R
WB
, R
WA
= NC, V
DD
= 2.7V, AD5254
Resistor Nonlinearity
2
R-INL
R
WB
, R
WA
= NC, V
DD
= 5.5V, AD5253
R
WB
, R
WA
= NC, V
DD
= 5.5V, AD5254
R
WB
, R
WA
= NC, V
DD
= 2.7V, AD5253
R
WB
, R
WA
= NC, V
DD
= 2.7V, 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
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, V
DD
= 5.5 V, AD5253
Code = Full scale, V
DD
= 5.5 V, AD5254
Code = Full scale, V
DD
= 2.7 V, AD5253
Code = Full scale, V
DD
= 2.7 V, AD5254
Zero-Scale Error
V
WZSE
Code = Zero scale, V
DD
= 5.5 V, AD5253
Code = Zero scale, V
DD
= 5.5 V, AD5254
Code = Zero scale, V
DD
= 2.7 V, AD5253
Code = Zero scale, V
DD
= 2.7 V, 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
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
Rev. 0 | Page 3 of 28
Min
–0.5
–1
–0.75
–1.5
–0.5
–2
–1
–2
–30
Typ
1
±0.2
±0.25
±0.3
±0.3
±0.2
±0.5
+2.5
+9
Max
6/8
+0.5
+1
+0.75
+1.5
+0.5
+2
+4
+14
+30
Unit
Bits
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
%
–0.5
–1
–0.5
–2
650
75
200
0.15
±0.1
±0.25
±0.2
±0.5
130
300
+0.5
+1
+0.5
+2
ppm/°C
%
LSB
LSB
LSB
LSB
–5
–16
–6
–23
0
0
0
0
V
SS
25
–3
–11
–4
–16
3
11
4
15
85
0
0
0
0
5
16
6
20
V
DD
ppm/°C
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
V
pF
95
pF
2.4
2.1
4.9
0.01
1
0.8
0.6
0.4
5
μA
V
V
V
V
V
V
μA
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