DS1870E-010 datasheet(7/28 Pages) MAXIM

Part #	DS1870E-010

Description	LDMOS RF Power-Amplifier Bias Controller

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Manufacturer	MAXIM [Maxim Integrated Products]

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7 / 28 page

LDMOS RF Power-Amplifier Bias

Controller

_____________________________________________________________________

7

Typical Operating Characteristics (continued)

(VCC = +5.0V, TA = +25°C, unless otherwise noted.)

-15

-10

-5

0

5

10

15

20

-20

POTENTIOMETER LOW TERMINAL VOLTAGE

vs. TEMPERATURE

TEMPERATURE (

°C)

80

60

-20

0

20

40

-40

100

L1

L2

HCOM = 5.0V

VCC CONVERSION ERROR

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

5.0

4.5

4.0

3.5

-0.4

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

0.4

0.5

-0.5

3.0

5.5

DEFAULT VCC

CALIBRATION

VD CONVERSION ERROR

vs. INPUT VOLTAGE

INPUT VOLTAGE (V)

2.0

1.5

1.0

0.5

-0.4

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

0.4

0.5

-0.5

0

2.5

DEFAULT VD

CALIBRATION

ID1 CONVERSION ERROR

vs. INPUT VOLTAGE

INPUT VOLTAGE (V)

0.4

0.3

0.2

0.1

-0.4

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

0.4

0.5

-0.5

0

0.5

DEFAULT ID1

CALIBRATION

ID2 CONVERSION ERROR

vs. INPUT VOLTAGE

INPUT VOLTAGE (V)

0.4

0.3

0.2

0.1

-0.4

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

0.4

0.5

-0.5

0

0.5

DEFAULT ID2

CALIBRATION

POTENTIOMETER 1 AND 2

WIPER RESISTANCE vs. WIPER VOLTAGE

WIPER VOLTAGE (V)

4

3

2

1

100

200

300

400

500

600

700

800

900

1000

0

05

HCOM = 5.0V

POTENTIOMETER 1 AND 2

WIPER RESISTANCE vs. TEMPERATURE

TEMPERATURE (

°C)

80

60

20

40

0

-20

100

200

300

400

500

600

700

800

900

1000

0

-40

100

HCOM = 5V

WIPER VOLTAGE = 4V

POTENTIOMETER END-TO-END RESISTANCE

vs. TEMPERATURE

TEMPERATURE (

°C)

80

60

-20

0

20

40

-150

-100

-50

0

50

100

150

200

-200

-40

100

RPOT2 + RS2

RPOT1 + RS1

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