LTM2883 View Datasheet(PDF) - Linear Technology

Part Name

Description

Manufacturer

LTM2883

SPI/Digital or I2C µModule Isolator with Adjustable ±12.5V and 5V Regulated Power

Linear Technology 

Applications Information

60

50

40

CISPR 22 CLASS B LIMIT

30

DC1748A-B

20

10

0

–10

–20

–30

0

DC1748A-A

DETECTOR = QuasiPeak

RBW = 120kHz

VBW = 300kHz

SWEEP TIME = 17s

# OF POINTS = 501

100 200 300 400 500 600 700 800 900 1000

FREQUENCY (MHz)

2883 F15

Figure 15. LTM2883 Low EMI Demo Board Emissions

LTM2883

Typical Applications

5V

1µF

1.7k

1.7k

VCC

SDA

µC SCL

GND

LTM2883-5I

B8

A8 VCC

VL

V+ L8

AV+ K8

V– L7

A7

ON

A6

GND

A5

DI1

A4 SDA

A3 SCL

A2 DNC

A1 DO2

B1 DO1

B2 GND

AV– K7

VCC2 L6

AVCC2 K6

O1 L5

SDA2 L4

SCL2 L3

DNC L2

I2 L1

I1 K1

GND2 K2

2883 F16

12.5V

–12.5V

5V

0.1µF

1µF

3+ 8

1/2 LTC2055 1

2–

4

LTC2631A-LM12, DAC

1 CA0 R_SEL 8

2 SCL VOUT 7

3 SDA REF 6

4 GND VCC 5

0.1µF

1.25V

2.5V F.S.

5+

1/2 LTC2055 7

6–

12.5V

0.1µF

8

7

9–

10

1

2+

3

LT1991

G=8

5

4

0.1µF

–12.5V

6

±10V OUT

0.1µF

LTC2301, ADC

10

VDD

11 AD0

12 AD1

1 GND

2 SDA

3 SCL

GND 9

REFC 8

VREF

IN–

7

6

IN+ 5

GND 4

12.5V

2.5V

0.1µF

10µF

0.1µF

6

1µF 4V F.S.

7

LT1991

G = 0.2

5

0.1µF

4

8

9

10

1

2

3

–12.5V

±10V IN

Figure 16. Isolated I2C 12-Bit, ±10V Analog Input and Output

2883f

25

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