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參數資料
| 型號： | ADN2850ACP250 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 數字電位計 |
| 英文描述： | TERM,RING NON-INSUL. |
| 中文描述： | DUAL 250K DIGITAL POTENTIOMETER, 3-WIRE SERIAL CONTROL INTERFACE, 1024 POSITIONS, QCC16 |
| 封裝： | 5 X 5 MM, LFCSP-16 |
| 文件頁數： | 2/18頁 |
| 文件大小： | 270K |
| 代理商： | ADN2850ACP250 |
PRELIMINARY TECHNICAL DATA
Nonvolatile Memory Programmable Resistors
ELECTRICAL CHARACTERISTICS 25K , 250K OHM VERSIONS
(V
DD
= +3V to +5.5V and,
-40°C < T
A
< +85°C unless otherwise noted
.)
Parameter
Symbol
Conditions
ADN2850
REV PrH, 13, AUG 2001
2
Min
Typ
1
Max
Units
DC CHARACTERISTICS RHEOSTAT MODE Specifications apply to all VRs
Resistor Differential Nonlinearity
2
Resistor Integral Nonlinearity
2
Resistance Temperature Coefficent
Wiper Resistance
R-DNL
R-INL
R
WB
/
T
R
W
R
WB
R
WB
-2
-4
+2
+4
LSB
LSB
35
50
200
0.2
ppm/°C
V
DD
= +5V, I
W
= 1V/R
WB
V
DD
= +3V, I
W
= 1V/R
WB
Ch 1 and 2 R
WB
, Dx = 3FF
H
Dx = 3FF
H
100
%
%
Channel Resistance Matching
Nomnal Resistor tolerance
R
WB
/R
WB
R
WB
-30
30
RESISTOR TERMINALS
Termnal Voltage Range
3
Capacitance
4
Bx
Capacitance
4
Wx
Common-mode Leakage Current
5
V
W, B
C
B
C
W
I
CM
V
SS
V
DD
V
f = 1 MHz, measured to GND, Code = Half-scale
f = 1 MHz, measured to GND, Code = Half-scale
V
W
= V
B
= V
DD
/2
8
80
0.01
pF
pF
μA
1
DIGITAL INPUTS & OUTPUTS
Input Logic High
Input Logic Low
Input Logic High
Input Logic Low
Input Logic High
Input Logic Low
Output Logic High (SDO, RDY)
Output Logic Low
Input Current
Input Capacitance
4
V
IH
V
IL
V
IH
V
IL
V
IH
V
IL
V
OH
V
OL
I
IL
C
IL
with respect to GND, V
DD
= 5V
with respect to GND, V
DD
= 5V
with respect to GND, V
DD
= 3V
with respect to GND, V
DD
= 3V
with respect to GND, V
DD
= +2.5V, V
SS
=-2.5V
with respect to GND, V
DD
= 5V, V
SS
=-2.5V
R
PULL-UP
= 2.2K
to +5V
I
OL
= 1.6mA, V
LOGIC
= +5V
V
IN
= 0V or V
DD
2.4
V
V
V
V
V
V
V
V
0.8
2.1
0.6
2.0
0.5
4.9
0.4
±1
μA
pF
5
POWER SUPPLIES
Single-Supply Power Range
Dual-Supply Power Range
Positive Supply Current
Programmng Mode Current
Read Mode Current
Negative Supply Current
Power Dissipation
6
Power Supply Sensitivity
V
DD
V
DD
/V
SS
I
DD
I
DD(PG)
I
DD(READ)
I
SS
P
DISS
PSS
V
SS
= 0V
3.0
±2.25
5.5
±2.75
20
V
V
V
IH
= V
DD
or V
IL
= GND
V
IH
= V
DD
or V
IL
= GND
V
IH
= V
DD
or V
IL
= GND
V
IH
= V
DD
or V
IL
= GND, V
DD
= 2.5V, V
SS
= -2.5V
V
IH
= V
DD
or V
IL
= GND
V
DD
= +5V ±10%
2
35
3
2
6
μA
mA
mA
μA
μ
W
%/%
20
110
0.01
0.002
CURRENT MONITOR Termnals
Current Sink at V
17
Current Sink at V
2
I
1
I
2
0.0001
10
10
mA
mA
DYNAMIC CHARACTERISTICS
4, 8
Resistor Noise Spectral Density
Analog Crosstalk (C
W1
/C
W2
)
e
N_WB
C
T
R
WB_FS
= 25K
/
250K
, T
A
= 25
o
C
V
B1
= V
B2
= 0V, Measured V
W1
with
V
W2
= 100 mV p-p @ f = 100 kHz, Code
1,2
= 200
H
20 / 64
nV
√
Hz
-65
dB
NOTES: See bottomof table next page.
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