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參數(shù)資料
| 型號： | AD5248EVAL |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 數(shù)字電位計(jì) |
| 英文描述： | Dual 256-Position I2C Compatible Digital Potentiometer |
| 中文描述： | 雙256位I2C兼容數(shù)字電位器 |
| 文件頁數(shù)： | 4/20頁 |
| 文件大?。?/td> | 798K |
| 代理商： | AD5248EVAL |
AD5243/AD5248
ELECTRICAL CHARACTERISTICS—10 k, 50 k, 100 k VERSIONS
V
DD
= 5 V ± 10%, or 3 V ± 10%; V
A
= V
DD
; V
B
= 0 V;
40°C < T
A
< 125°C; unless otherwise noted.
Table 2.
Parameter
Symbol
DC CHARACTERISTICS—RHEOSTAT MODE
Resistor Differential Nonlinearity
2
R-DNL
Resistor Integral Nonlinearity
2
R-INL
Nominal Resistor Tolerance
3
R
AB
Resistance Temperature Coefficient
(R
AB
/R
AB
)/T
R
WB
(Wiper Resistance)
R
WB
DC CHARACTERISTICS—POTENTIOMETER DIVIDER MODE (Specifications Apply to All VRs)
Differential Nonlinearity
4
DNL
Integral Nonlinearity
4
INL
Voltage Divider Temperature
Coefficient
Full-Scale Error
V
WFSE
Zero-Scale Error
V
WZSE
RESISTOR TERMINALS
Voltage Range
5
V
A
, V
B
, V
W
Capacitance
6
A, B
C
A,
C
B
Capacitance
6
W
C
W
Shutdown Supply Current
7
I
A_SD
Common-Mode Leakage
I
CM
DIGITAL INPUTS AND OUTPUTS
Input Logic High
V
IH
Input Logic Low
V
IL
Input Logic High
V
IH
Input Logic Low
V
IL
Input Current
I
IL
Input Capacitance
C
IL
POWER SUPPLIES
Power Supply Range
V
DD RANGE
Supply Current
I
DD
Power Dissipation
P
DISS
Power Supply Sensitivity
PSS
Rev. 0 | Page 4 of 20
Conditions
R
WB
, V
A
= no connect
R
WB
, V
A
= no connect
T
A
= 25°C
V
AB
= V
DD
, wiper = no connect
Code = 0x00, V
DD
=5 V
Min
1
2.5
20
1
1
Typ
1
±0.1
±0.25
35
160
±0.1
±0.3
15
Max
+1
+2.5
+20
200
+1
+1
Unit
LSB
LSB
%
ppm/°C
LSB
LSB
ppm/°C
Code = 0x80
(V
W
/V
W
)/T
Code = 0xFF
Code = 0x00
f = 1 MHz, measured to GND, Code = 0x80
f = 1 MHz, measured to GND, Code = 0x80
V
DD
= 5.5 V
V
A
= V
B
= V
DD
/2
V
DD
= 5 V
V
DD
= 5 V
V
DD
= 3 V
V
DD
= 3 V
V
IN
= 0 V or 5 V
V
IH
= 5 V or V
IL
= 0 V
V
IH
= 5 V or V
IL
= 0 V, V
DD
= 5 V
V
DD
= 5 V ± 10%, Code = midscale
2.5
0
GND
2.4
2.1
2.7
1
1
0
2.5
V
DD
1
0.8
0.6
±1
5.5
6
30
±0.0
8
LSB
LSB
V
pF
pF
μA
nA
V
V
V
V
μA
pF
V
μA
μW
%/%
45
60
0.01
1
5
3.5
±0.02
DYNAMIC CHARACTERISTICS
Bandwidth 3 dB
BW
R
AB
= 10 k/50 k/100 k, Code = 0x80
600/100/4
0
0.1
2
kHz
Total Harmonic Distortion
V
W
Settling Time (10 k/50 k/100
k)
Resistor Noise Voltage Density
See notes at end of section.
THD
W
t
S
V
A
= 1 V rms, V
B
= 0 V, f = 1 kHz, R
AB
= 10 k
V
A
= 5 V, V
B
= 0 V, ±1 LSB error band
%
μs
e
N_WB
R
WB
= 5 k, R
S
= 0
9
nV/
√
Hz
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