MAX4513CSE データシートの表示（PDF） - Maxim Integrated

部品番号

コンポーネント説明

メーカー

MAX4513CSE

Quad, Rail-to-Rail, Fault-Protected, SPST Analog Switches

Maxim Integrated 

Quad, Rail-to-Rail, Fault-Protected,

SPST Analog Switches

(TA = +25°C, unless otherwise noted.)

Typical Operating Characteristics (continued)

LOGIC-LEVEL THRESHOLD vs. V+

3.0

2.5

2.0

1.5

1.0

0.5

0

0 5 10 15 20 25 30 35

V+ (V)

FREQUENCY RESPONSE

0

MAX186-14A 120

-10

ON LOSS

100

-20

80

-30

60

-40

OFF LOSS

40

-50

20

-60

0

-70

-20

-80

-40

ON PHASE

-90

-60

-100

-80

-110

-100

-120

0.01 0.1

1

-120

10 100 1000

FREQUENCY (MHz)

Pin Description

PIN NAME

FUNCTION

1, 16,

9, 8

IN1–IN4

Logic Control Digital Inputs

2, 15,

10, 7

COM1–

COM4

Analog Switch Common* Terminals

3, 14,

11, 6

NO1–NO4

or

NC1–NC4

Analog Switch Fault-Protected Normally

Open* or Normally Closed* Terminals

4

V-

Negative Analog Supply Voltage Input.

Connect to GND for single-supply operation.

5

GND

Ground. Connect to digital ground. (Analog

signals have no ground reference.)

12

N.C. No Connection—not internally connected

13

V+

Positive Analog and Digital Supply-Voltage

Input. Internally connected to substrate.

*As long as the voltage on NO_ or NC_ does not exceed V+ or

V-, NO_ (or NC_) and COM_ pins are identical and interchange-

able. Either may be considered as an input or output; signals

pass equally well in either direction.

Detailed Description

Overview of Traditional

Fault-Protected Switches

The MAX4511/MAX4512/MAX4513 are fault-protected

CMOS analog switches with unusual operation and

construction. Traditional fault-protected switches are

constructed by three series FETs. This produces good

off characteristics, but fairly high on-resistance when

the signals are within about 3V of each supply rail. As

the voltage on one side of the switch approaches with-

in about 3V of either supply rail (a fault condition), the

switch impedance becomes higher, limiting the output

signal range (on the protected side of the switch) to

approximately 3V less than the appropriate polarity

supply voltage.

During a fault condition, the output current that flows

from the protected side of the switch into its load

comes from the fault source on the other side of the

switch. If the switch is open or the load is extremely

high impedance, the input current will be very low. If

the switch is on and the load is low impedance,

enough current will flow from the source to maintain the

load voltage at 3V less than the supply.

8 _______________________________________________________________________________________

Share Link: