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參數(shù)資料
| 型號： | MAX381 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Precision, Low-Voltage Analog Switches |
| 中文描述： | 高精度、低電壓、SPST、CMOS模擬開關(guān) |
| 文件頁數(shù)： | 8/12頁 |
| 文件大?。?/td> | 125K |
| 代理商： | MAX381 |
M
Prec ision, Low-Voltage Analog S witc hes
8
_______________________________________________________________________________________
__________Applic ations Information
Operation with S upply V oltages
Other than ±5V
The MAX381/MAX383/MAX385 switches operate with
±3.0V to ±8V bipolar supplies and a +3V to +15V single
supply. In either case, analog signals ranging from V+ to
V- can be switched. The Typical Operating Characteristics
graphs show the typical on-resistance variation with ana-
log signal and supply voltage. The usual on-resistance
temperature coefficient is 0.5%/°C (typ).
Overvoltage Protec tion
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 sequencing
is not possible, add two small signal diodes (D1, D2) in
series with supply pins for overvoltage protection
(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 devices’ low switch
resistance and low leakage characteristics. Device
operation is unchanged, and the difference between
V+ and V- should not exceed 17V. These protection
diodes are not recommended when using a single 3V
supply.
______________________________________________________________Pin Desc ription
COM
V-
V+
NO
* INTERNAL PROTECTION DIODES
D2
D1
-5V
+5V
MAX381
MAX383
MAX385
*
*
*
*
Figure 1. Overvoltage Protection Using Two External Blocking
Diodes
1, 8
COM_
Analog Switch Common Terminal
2–7, 12
N.C.
Not Internally Connected
9, 16
NO_
Analog Switch Normally Open Terminal
—
NC_
Analog Switch Normally Closed Terminal
10, 15
IN_*
Logic Level Input (Normally Low)
11
V+
Analog Signal and Logic Positive Supply Input
14
V-
Analog Signal Negative Supply Input
NAME
FUNCTION
MAX381
1, 3, 6, 8
2, 7, 12
9, 16
4, 5
10, 15
11
14
MAX383
1, 3, 6, 8
2, 7, 12
4, 5, 9, 16
—
10, 15
11
14
MAX385
PIN
13
GND
Logic Negative Supply Input (Ground)
13
13
* IN1 controls COM1 and COM3; IN2 controls COM2 and COM4.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX381MJE | Precision, Low-Voltage Analog Switches |
| MAX383CPE | Precision, Low-Voltage Analog Switches |
| MAX383 | Precision, Low-Voltage Analog Switches |
| MAX383EPE | Dual LVDS Transmitter/Receiver 16-SOIC -40 to 85 |
| MAX383ESE | Dual LVDS Transmitter/Receiver 16-SOIC -40 to 85 |
相關(guān)代理商/技術(shù)參數(shù) |
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| MAX3812USA | 功能描述:緩沖器和線路驅(qū)動器 RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
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