AS3977 datasheet(11/47 Pages) AMSCO

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AS3977

Data Sheet - E l e c t r i c a l C h a r a c t e r i s t i c s

fBW

Charge pump setting:

ICHP

@ 12.5 µA

Reference Frequency = 4MHz

VSUP = 3.0 V;

TAMB = 25ºC

kHz

@ 25 µA

@ 37.5µA

@ 50 µA

120

Filter Bandwidth at 868 MHz

fBW

Charge pump setting:

ICHP

@ 12.5 µA

Reference Frequency = 4MHz

VSUP = 3.0 V;

TAMB = 25ºC

kHz

@ 25 µA

@ 37.5µA

@ 50 µA

120

Table 9. Power Amplifier (300 - 320 MHz and 425 - 450 MHz Bands)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

POUT

Min. Output Power @ 50

VSUP=3V, @ 25ºC,

Power depending on power setting with or

without the use of the internal voltage

regulator, external matching network

included

-20

dBm

POUT

Max. Output Power @ 50

VSUP=3V, @ 25ºC,

Power depending on power setting with or

without the use of the internal voltage

regulator, external matching network

included

8dBm

POUT

Output Power

Variation@ 50

(300 – 320MHz)

VSUP=3V, @ 25ºC,

Power depending on register setting with

or without the use of the internal voltage

regulator,

external matching network included,

strong AB operation mode

-2.5

+2.5

dBm

POUT

Output Power

Variation@ 50

(425 – 450MHz)

VSUP=3V, @ 25ºC,

Power depending on register setting with

or without the use of the internal voltage

regulator,

external matching network included,

strong AB operation mode

-2.0

+2.0

dBm

POUT

Output Power Variation vs. VDD and

Temperature @ 50

VSUP=2.2…3.6V, TAMB=-40…85ºC, With

the use of the internal voltage regulator,

external matching network included,

strong AB operation mode

-2.8

+0.6 /

-1.5

1.0

POUT

Output Power Variation vs.

Temperature @ 50

VSUP=3V, TAMB=-40..85ºC,

Without the use of the internal voltage

regulator,

external matching network included,

strong AB operation mode

+1.5 /

-2.0

POUT

Max Output Power @ 50

VSUP=3.6V, @ 25ºC,

Power depending on power setting

without the use of the internal voltage

regulator,

external matching network included

dBm

1. Limits by production test measurement uncertainties

Table 8. (Continued)Loop Filter Bandwidth

Symbol

Parameter

Conditions

Min

Typ

Max

Units

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