ADP3402 Просмотр технического описания (PDF) - Analog Devices

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Компоненты Описание

производитель

ADP3402

GSM Power Management System

Analog Devices 

ADP3402

ILOAD

VCC

MLCC CAPS

I = 100mA

I = 200␮A

TIME – 200␮s/DIV

Figure 8. VCC Load Step

ILOAD

VCCA

I = 50␮A

MLCC CAPS

I = 130mA

TIME – 100␮s/DIV

Figure 9. VCCA Load Step

PWRONIN AND ANALOGON (2V/DIV)

VCCA (100mV/DIV)

VTCXO (100mV/DIV)

VCC (100mV/DIV)

TIME – 50␮s/DIV

Figure 10. Turn-On Transients, Minimum Loads

PWRONIN AND ANALOGON (2V/DIV)

VCCA (100mV/DIV)

REFOUT (100mV/DIV)

VCC (100mV/DIV)

VTCXO (100mV/DIV)

TIME – 50␮s/DIV

Figure 11. Turn-On Transients, Maximum Loads

80

70 VCCA

VTCXO

60

50

MLCC OUTPUT CAPS

VBAT = 3.2V, FULL LOADS

REFOUT

40

VCC

30

20

10

0

4 10

100

1k

10k

FREQUENCY – Hz

100k

Figure 12. Ripple Rejection vs. Frequency

80

REFOUT

70

60

50

VCC

40

30

VTCXO

VCCA

20

10

FREQUENCY = 217Hz

MAX LOADS

0

2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3

VBAT – V

Figure 13. Ripple Rejection vs. Battery Voltage

–8–

REV. 0

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