参数资料
型号: AD5245BRJ50-R2
厂商: ANALOG DEVICES INC
元件分类: 数字电位计
英文描述: 256-Position I2C Compatible Digital Potentiometer
中文描述: 50K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO8
封装: 2.90 X 3 MM, MO-178BA, SOT-23, 8 PIN
文件页数: 4/16页
文件大小: 995K
代理商: AD5245BRJ50-R2
AD5245
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
/T
Conditions
R
WB
, V
A
= no connect
R
WB
, V
A
= no connect
T
A
= 25°C
V
AB
= V
DD
,
Wiper = no connect
V
DD
= 5 V
Min
–1
–2
–30
Typ
1
±0.1
±0.25
45
Max
+1
+2
+30
Unit
LSB
LSB
%
ppm/°C
DC CHARACTERISTICS—POTENTIOMETER DIVIDER MODE (Specifications apply to all VRs)
Resolution
Differential Nonlinearity
4
Integral Nonlinearity
4
Voltage Divider Temperature Coefficient
Full-Scale Error
Zero-Scale Error
RESISTOR TERMINALS
Voltage Range
5
Capacitance
6
A, B
Wiper Resistance
R
W
–1
–1
–3
0
GND
50
±0.1
±0.3
15
–1
1
45
120
8
+1
+1
0
3
V
DD
Bits
LSB
LSB
ppm/°C
LSB
LSB
V
pF
N
DNL
INL
V
W
/T
V
WFSE
V
WZSE
V
A,B,W
C
A,B
Code = 0x80
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
= 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
R
AB
= 10 k/50 k/100 k,
Code = 0x80
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
R
WB
= 5 k, RS = 0
Capacitance
6
W
C
W
60
pF
DIGITAL INPUTS AND OUTPUTS
Input Logic High
Input Logic Low
Input Logic High
Input Logic Low
Input Current
Input Capacitance
6
POWER SUPPLIES
Power Supply Range
Supply Current
Power Dissipation
8
Shutdown Supply Current
7
Common-Mode Leakage
I
DD_SD
I
CM
V
IH
V
IL
V
IH
V
IL
I
IL
C
IL
V
DD RANGE
I
DD
P
DISS
2.4
2.1
2.7
0.01
1
5
3
1
0.8
0.6
±1
5.5
8
0.2
μA
nA
V
V
V
V
μA
pF
V
μA
mW
Power Supply Sensitivity
PSS
±0.02
±0.05
%/%
DYNAMIC CHARACTERISTICS
6, 9
Bandwidth –3dB
BW
600/100/40
kHz
Total Harmonic Distortion
THD
W
0.05
%
V
W
Settling Time (10 k/50 k/100 k)
t
S
2
μs
Resistor Noise Voltage Density
e
N_WB
9
nV/√Hz
Rev. 0 | Page 4 of 16
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