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AD5243 Datasheet

  • AD5243

  • Dual 256-Position I2C Compatible Digital Potentiometer

  • 22頁

  • AD

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AD5243/AD5248
ELECTRICAL CHARACTERISTICS鈥?.5 k鈩?VERSION
V
DD
= 5 V 鹵 10%, or 3 V 鹵 10%; V
A
= +V
DD
; V
B
= 0 V;
鈭?0擄C
< T
A
< +125擄C; unless otherwise noted.
Table 1.
Parameter
Symbol
Conditions
DC CHARACTERISTICS鈥擱HEOSTAT MODE
Resistor Differential Nonlinearity
2
R-DNL
R
WB
, V
A
= no connect
2
Resistor Integral Nonlinearity
R-INL
R
WB
, V
A
= no connect
Nominal Resistor Tolerance
3
T
A
= 25擄C
鈭哛
AB
Resistance Temperature Coefficient
(鈭哛
AB
/R
AB
)/鈭員 V
AB
= V
DD
, wiper = no connect
R
WB
(Wiper Resistance)
R
WB
Code = 0x00, V
DD
= 5 V
DC CHARACTERISTICS鈥擯OTENTIOMETER DIVIDER MODE (Specifications Apply to All VRs)
Differential Nonlinearity
4
DNL
Integral Nonlinearity
INL
Code = 0x80
(鈭哣
W
/V
W
)/鈭員
Voltage Divider Temperature
Coefficient
Full-Scale Error
V
WFSE
Code = 0xFF
Zero-Scale Error
V
WZSE
Code = 0x00
RESISTOR TERMINALS
Voltage Range
5
V
A
, V
B
, V
W
6
Capacitance A, B
C
A,
C
B
f = 1 MHz, measured to GND, Code = 0x80
6
Capacitance W
C
W
f = 1 MHz, measured to GND, Code = 0x80
Shutdown Supply Current
7
I
A_SD
V
DD
= 5.5 V
Common-Mode Leakage
I
CM
V
A
= V
B
= V
DD
/2
DIGITAL INPUTS AND OUTPUTS
Input Logic High
V
IH
V
DD
= 5 V
Input Logic Low
V
IL
V
DD
= 5 V
Input Logic High
V
IH
V
DD
= 3 V
Input Logic Low
V
IL
V
DD
= 3 V
Input Current
I
IL
V
IN
= 0 V or 5 V
Input Capacitance
6
C
IL
POWER SUPPLIES
Power Supply Range
V
DD RANGE
Supply Current
I
DD
V
IH
= 5 V or V
IL
= 0 V
8
Power Dissipation
P
DISS
V
IH
= 5 V or V
IL
= 0 V, V
DD
= 5 V
Power Supply Sensitivity
PSS
V
DD
= 5 V 鹵 10%, Code = midscale
9
DYNAMIC CHARACTERISTICS
Bandwidth 鈭? dB
BW_2.5 K
Code = 0x80
Total Harmonic Distortion
THD
W
V
A
= 1 V rms, V
B
= 0 V, f = 1 kHz
V
W
Settling Time
t
S
V
A
= 5 V, V
B
= 0 V, 鹵1 LSB error band
Resistor Noise Voltage Density
e
N_WB
R
WB
= 1.25 k鈩? R
S
= 0
See notes at end of section.
Min
鈭?
鈭?
鈭?0
Typ
1
鹵0.1
鹵0.75
35
160
Max
+2
+6
+55
200
+1.5
+2
Unit
LSB
LSB
%
ppm/擄C
鈩?/div>
LSB
LSB
ppm/擄C
LSB
LSB
V
pF
pF
碌A
nA
V
V
V
V
碌A
pF
V
碌A
碌W
%/%
MHz
%
碌s
nV/鈭欻z
鈭?.5
鈭?
鹵0.1
鹵0.6
15
鈭?.5
2
鈭?0
0
GND
0
10
V
DD
45
60
0.01
1
2.4
1
0.8
2.1
0.6
鹵1
5
2.7
3.5
鹵0.02
4.8
0.1
1
3.2
5.5
6
30
鹵0.08
Rev. 0 | Page 3 of 20

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