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AD5255 데이터시트(PDF) 3 Page - Analog Devices

부품명 AD5255
상세설명  3-Channel Digital Potentiometer with Nonvolatile Memory
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AD5255 데이터시트(HTML) 3 Page - Analog Devices

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AD5255
Rev. 0 | Page 3 of 20
ELECTRICAL CHARACTERISTICS
Single supply: VDD = 2.7 V to 5.5 V and −40°C < TA < +85°C, unless otherwise noted.
Dual supply: VDD = +2.25 V or +2.75 V, VSS = −2.25 V or −2.75 V and −40°C < TA < +85°C, unless otherwise noted.
Table 1.
Parameter
Symbol
Conditions
Min
Typ1
Max
Unit
DC CHARACTERISTICS,
RHEOSTAT MODE
Resistor Differential Nonlinearity2
R-DNL
RWB, 7-bit channel
−0.75
+0.75
LSB
RWB, 9-bit channels
−2.5
+2.5
LSB
Resistor Integral Nonlinearity2
R-INL
RWB, 7-bit channel
−0.5
+0.5
LSB
R-INL
RWB, 9-bit channels, VDD = 5.5 V
−2.0
+2.0
LSB
R-INL
RWB, 9-bit channels, VDD = 2.7 V
−4.0
+4.0
LSB
Resistance Temperature Coefficent
(∆RWB/RWB)/∆T × 106
35
ppm/°C
Wiper Resistance
RW
VDD = 5 V, IW = 1 V/RWB
100
150
VDD = 3 V, IW = 1 V/RWB
250
400
Channel Resistance Matching
∆RAB1/∆RAB2
Ch 1 and 2 RWB, Dx = 0x1FF
0.1
%
Nominal Resistor Tolerance
∆RAB/RAB
Dx = 0x3FF
−15
+15
%
DC CHARACTERISTICS,
POTENTIOMETER DIVIDER MODE
Differential Nonlinearity3
DNL
7-bit channel
−0.5
+0.5
LSB
DNL
9-bit channels
−2.0
+2.0
LSB
Integral Nonlinearity3
INL
7-bit channel
−0.5
+0.5
LSB
INL
9-bit channels
−2.0
+2.0
LSB
Voltage Divider Temperature
Coefficent
(∆VW/VW)/∆T × 106
Code = half-scale
15
ppm/°C
Full-Scale Error
VWFSE
7-bit channel/9-bit channel,
code = full-scale
−1/−2.75
0/0
LSB
Zero-Scale Error
VWZSE
7-bit channel/9-bit channel,
code = zero-scale
0/0
1/2.0
LSB
RESISTOR TERMINALS
Terminal Voltage Range4
VA, B, W
VSS
VDD
V
Capacitance5 Ax, Bx
CA,B
f = 1 kHz, measured to GND,
code = half-scale
85
pF
Capacitance5 Wx
CW
f = 1 kHz, measured to GND,
code = half-scale
95
pF
Common-Mode Leakage Current 5, 8
ICM
VW = VDD/2
0.01
1
µA
DIGITAL INPUTS AND OUTPUTS
Input Logic High
VIH
VDD = 5 V, VSS = 0 V
2.4
V
VDD/VSS = +2.7 V/0 V or
VDD/VSS = ±2.5 V
2.1
V
Input Logic Low
VIL
VDD = 5 V, VSS = 0 V
0.8
V
VDD/VSS = +2.7 V/0 V or
VDD/VSS = ±2.5 V
0.6
V
Output Logic High (SDA)
VOH
RPULL-UP = 2.2 kΩ to VDD = 5 V,
VSS = 0 V
4.9
V
Output Logic Low
VOL
RPULL-UP = 2.2 kΩ to VDD = 5 V,
VSS = 0 V
0.4
V
WP Leakage Current
I
WP
WP = VDD
9
µA
A0 Leakage Current
IA0
A0 = GND
3
µA


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