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參數(shù)資料
| 型號(hào)： | AS1746-BTDT |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 數(shù)據(jù)轉(zhuǎn)換 |
| 英文描述： | Dual, SPDT Switch; Package Type: TDFN(3x3)-10 |
| 封裝： | TDFN(3x3)-10 |
| 文件頁數(shù)： | 9/15頁 |
| 文件大?。?/td> | 481K |
| 代理商： | AS1746-BTDT |
www.austriamicrosystems.com
Revision 1.03
9 - 15
AS1746
Datasheet - Application Information
9 Application Information
Digital Control Inputs
The AS1746 logic inputs can handle up to +5.5V regardless of the supply voltage. For example, with a +3.3V supply,
IN
x
may be driven low to GND and high to 5.5V. Driving IN
x
rail-to-rail minimizes power consumption.
Analog Signal Levels
Analog signals that range over the entire supply voltage (V+ to GND) are passed with very little change in R
ON
(see
Typical Operating Characteristics on page 6)
. The switches are bi-directional, so the NO
x
, NC
x
, and COM
x
pins can be
used as inputs or outputs.
Power Supply Sequencing
Proper power supply sequencing is recommended for all CMOS devices. The recommended sequence is as follows:
1. V+
2. NO
x,
NC
x,
COM
x
Always apply V+ before applying analog signals, especially if the analog signal is not current limited. If this sequencing
is not possible, and if the analog inputs are not current limited to <20mA, add a small signal protection diode (D1) as
shown in
Figure 16
.
Overvoltage Protection
Using a protection diode will reduce the analog range to a diode voltage drop (approximately 0.7V) below V+ (for D1).
R
ON
will increase slightly at low supply voltages.
Caution:
The maximum supply voltage (V+) must not exceed +7V. Do not exceed the absolute maximum ratings
because stresses beyond the ratings listed in
Absolute Maximum Ratings on page 3
may cause permanent
damage to the device.
Note:
Protection diode D1 can also protect the device from some overvoltage conditions.
Figure 16. Overvoltage Protections using 2 External Blocking Diodes
Note:
No damage will result to the circuit shown in
Figure 16
if the supply voltage is below the absolute maximum rat-
ing applied to an analog signal pin (NO
x,
NC
x,
or
COM
x
).
AS1746
GND
V
GEN
NO
D1
V+
Positive
Supply
COM
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS1746-BWLT | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:0.5/0.6, Low-Voltage, Dual SPDT Analog Switch |
| AS1747 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Low-Voltage, Dual SPDT, Audio Clickless Switch with Negative Rail Capability |
| AS1747_04 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability |
| AS174-73 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:SPDT RF Reflective Switch |
| AS1747-BTDR | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability |
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