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| 型号： | AD5255 |
| 厂商： | Analog Devices, Inc. |
| 英文描述： | 18 Bit, 1.25MSPS Single Channel Delta-Sigma ADC Single 64-HTQFP -40 to 85 |
| 中文描述： | 3通道数字电位器的非易失性存储器 |
| 文件页数： | 3/20页 |
| 文件大小： | 626K |
| 代理商： | AD5255 |
AD5255
ELECTRICAL CHARACTERISTICS
Single supply: V
DD
= 2.7 V to 5.5 V and 40°C < T
A
< +85°C, unless otherwise noted.
Dual supply: V
DD
= +2.25 V or +2.75 V, V
SS
= 2.25 V or 2.75 V and 40°C < T
A
< +85°C, unless otherwise noted.
Table 1.
Parameter
Symbol
DC CHARACTERISTICS,
RHEOSTAT MODE
Resistor Differential Nonlinearity
2
R-DNL
Resistor Integral Nonlinearity
2
R-INL
R-INL
R-INL
Resistance Temperature Coefficent
(R
WB
/R
WB
)/T × 10
6
Wiper Resistance
R
W
Channel Resistance Matching
R
AB1
/R
AB2
Nominal Resistor Tolerance
R
AB
/R
AB
DC CHARACTERISTICS,
POTENTIOMETER DIVIDER MODE
Differential Nonlinearity
3
DNL
DNL
Integral Nonlinearity
3
INL
INL
Voltage Divider Temperature
Coefficent
Full-Scale Error
V
WFSE
Rev. 0 | Page 3 of 20
Conditions
Min
Typ
1
Max
Unit
R
WB
, 7-bit channel
R
WB
, 9-bit channels
R
WB
, 7-bit channel
R
WB
, 9-bit channels, V
DD
= 5.5 V
R
WB
, 9-bit channels, V
DD
= 2.7 V
V
DD
= 5 V, I
W
= 1 V/R
WB
V
DD
= 3 V, I
W
= 1 V/R
WB
Ch 1 and 2 R
WB
, Dx = 0x1FF
Dx = 0x3FF
0.75
2.5
0.5
2.0
4.0
15
35
100
250
0.1
+0.75
+2.5
+0.5
+2.0
+4.0
150
400
+15
LSB
LSB
LSB
LSB
LSB
ppm/°C
%
%
7-bit channel
9-bit channels
7-bit channel
9-bit channels
Code = half-scale
0.5
2.0
0.5
2.0
15
+0.5
+2.0
+0.5
+2.0
LSB
LSB
LSB
LSB
ppm/°C
(V
W
/V
W
)/T × 10
6
7-bit channel/9-bit channel,
code = full-scale
7-bit channel/9-bit channel,
code = zero-scale
f = 1 kHz, measured to GND,
code = half-scale
f = 1 kHz, measured to GND,
code = half-scale
V
W
= V
DD
/2
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
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
R
PULL-UP
= 2.2 k to V
DD
= 5 V,
V
SS
= 0 V
R
PULL-UP
= 2.2 k to V
DD
= 5 V,
V
SS
= 0 V
WP = V
DD
A0 = GND
1/2.75
0/0
LSB
Zero-Scale Error
V
WZSE
0/0
1/2.0
LSB
RESISTOR TERMINALS
Terminal Voltage Range
4
Capacitance
5
Ax, Bx
V
A, B, W
C
A,B
V
SS
85
V
DD
V
pF
Capacitance
5
Wx
C
W
95
pF
Common-Mode Leakage Current
5, 8
DIGITAL INPUTS AND OUTPUTS
Input Logic High
I
CM
V
IH
2.4
2.1
0.01
1
μA
V
V
Input Logic Low
V
IL
0.8
0.6
V
V
Output Logic High (SDA)
V
OH
4.9
V
Output Logic Low
V
OL
0.4
V
WP Leakage Current
A0 Leakage Current
I
WP
I
A0
9
μA
3
μA
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