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參數(shù)資料
| 型號(hào)： | MAX4649EKA-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | 45з, SPDT Analog Switch in SOT23-8 |
| 中文描述： | 1-CHANNEL, SGL POLE DOUBLE THROW SWITCH, PDSO8 |
| 封裝： | SOT-23, 8 PIN |
| 文件頁數(shù)： | 6/10頁 |
| 文件大?。?/td> | 216K |
| 代理商： | MAX4649EKA-T |
Pin Description
PIN
NAME
FUNCTION
1
2
3
4
5
6
7
8
COM
NC
GND
V+
N.C.
IN
V-
NO
Analog Switch Common
Normally Closed Switch Terminal. NC is connected to COM when IN is low.
Ground
Positive Supply Voltage Input
No Connection
Digital Control Input
Negative Supply Voltage Input
Normally Open Switch Terminal. NO is connected to COM when IN is high.
M
Detailed Description
The MAX4649 is a high-voltage, single-pole/double-
throw (SPDT) analog switch that operates from dual
±4.5V to ±20V supplies or from a single +9V to +36V
supply. The MAX4649 has one normally closed (NC)
switch and one normally open (NO) switch. CMOS
switch construction allows bidirectional processing of
rail-to-rail analog signals.
The MAX4649 has break-before-make switching. The
transition time for switching from one input to the other
is typically 90ns. The off-leakage is typically less than
10pA, and on-leakage is typically less than 20pA.
Applications Information
Overvoltage Protection
Proper power-supply sequencing is recommended for
all CMOS devices. Do not exceed the absolute maxi-
mum ratings, because stresses beyond the listed rat-
ings can cause permanent damage to the devices.
Always sequence V+ on first, then V-, followed by the
logic inputs, NO_, or COM. If power-supply sequenc-
ing is not possible, add two small signal diodes (D1,
D2) in series with supply pins (Figure 1). Adding
diodes reduces the analog signal range to one diode
drop below V+ and one diode drop above V-, but does
not affect the device
’
s low switch resistance and low
45
, SPDT Analog Switch in SOT23-8
6
_______________________________________________________________________________________
Typical Operating Characteristics (continued)
(T
A
= +25
°
C, unless otherwise noted.)
0.000001
0.0001
0.00001
0.1
0.01
0.001
1
10
100
1000
0
2 3
1
4 5 6
7 8 9 10 11 12 13
IN (V)
SUPPLY CURRENT
vs. LOGIC VOLTAGE
M
I
μ
A
14 15
V+ = +15V
V- = -15V
-40
-30
-20
-10
0
10
20
30
40
-15
-5
-10
0
5
10
15
CHARGE INJECTION
vs. V
COM
M
V
COM
(V)
C
A: V+ = +15V, V- = -15V
B: V+ = +12V, V- = 0
A
B
0
1.5
1.0
0.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0
10
20
30
LOGIC THRESHOLD
vs. SUPPLY VOLTAGE
M
V+ (V)
L
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