Rainbow-electronics DS1870 Uživatelský manuál stáhnout pdf (Strana 6)

DS1870

LDMOS RF Power-Amplifier Bias

Controller

6 _____________________________________________________________________

Typical Operating Characteristics

(V

CC

= +5.0V, T

A

= +25°C, unless otherwise noted.)

POTENTIOMETER 1 AND 2 OUTPUT VOLTAGE

vs. POSITON

DS1870 toc04

WIPER POSITION (DEC)

WIPER VOLTAGE (V)

19212864

1

2

3

4

5

6

0

0 256

H

COM

= 5V

L1 AND L2

NOT CONNECTED

POTENTIOMETER 1 DIFFERENTIAL

NONLINEARITY vs. WIPER POSITION

DS1870 toc05

WIPER POSITION (DEC)

DIFFERENTIAL NONLINEARITY (LSB)

19212864

-0.20

-0.15

-0.10

-0.05

0

0.05

0.10

0.15

0.20

0.25

-0.25

0256

POTENTIOMETER 2 DIFFERENTIAL

NONLINEARITY vs. WIPER POSITION

DS1870 toc06

WIPER POSITION (DEC)

DIFFERENTIAL NONLINEARITY (LSB)

19212864

-0.20

-0.15

-0.10

-0.05

0

0.05

0.10

0.15

0.20

0.25

-0.25

0 256

POTENTIOMETER 1 INTEGRAL

NONLINEARITY vs. WIPER POSITION

DS1870 toc07

WIPER POSITION (DEC)

INTEGRAL NONLINEARITY (LSB)

19212864

-0.4

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

0.4

0.5

-0.5

0 256

POTENTIOMETER 2 INTEGRAL

NONLINEARITY vs. WIPER POSITION

DS1870 toc08

WIPER POSITION (DEC)

INTEGRAL NONLINEARITY (LSB)

19212864

-0.4

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

0.4

0.5

-0.5

0256

POTENTIOMETER 1 AND 2

WIPER RESISTANCE vs. WIPER VOLTAGE

DS1870 toc09

WIPER VOLTAGE (V)

WIPER RESISTANCE (Ω)

4321

100

200

300

400

500

600

700

800

900

1000

0

05

H

COM

= 5.0V

SUPPLY CURRENT vs. SUPPLY VOLTAGE

DS1870 toc01

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (mA)

5.35.14.94.7

620

640

660

680

700

720

740

760

780

800

600

4.5 5.5

SUPPLY CURRENT vs. TEMPERATURE

DS1870 toc02

TEMPERATURE (°C)

SUPPLY CURRENT (mA)

806020 400-20

450

500

550

600

650

700

750

800

850

900

400

-40 100

V

CC

= 5.5V

V

CC

= 4.5V

V

CC

= 5.0V

H

COM

CURRENT vs. H

COM

VOLTAGE

DS1870 toc03

H

COM

VOLTAGE (V)

H

COM

CURRENT (mA)

5.35.14.94.7

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

0

4.5 5.5

1 2 3 4 5 6 7 8 9 10 11 ... 27 28

Controller 1

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