AS3977 datasheet(8/47 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

6 Electrical Characteristics

Table 3. Operating Conditions

Symbol

Parameter

Conditions

Min

Typ

Max

Units

VSUP

Positive supply voltage analog

Voltage on all supply

VCCPA,VCCPLL,VDD

2.0

3.6

GND

Negative supply voltage analog

VSS

Negative supply voltage digital

A-D

Difference of supplies

VCC-VDD, GND-VSS

-0.1

0.1

TAMB

Ambient Temperature

-40

ºC

Table 4. Block Specification

Symbol

Parameter

Conditions

Min

Typ

Max

Units

fOUT315

Output Frequency Range

300

320

MHz

fOUT434

425

450

fOUT868

865

870

fOUT915

902

928

POUT

Output Power

Depends on Power Setting

fFSKdata

FSK Data Rate

Internal Manchester Coding

100

kbit/s

0.5

315MHz Frequency Band Section, FCC part 15 is applicable

ΔFSK1

FSK Deviation

programmable (8bit)

Resolution of FSK Deviation (see Table 5)

0±64

kHz

PSPE1

Spurious Emissions

(max. –19.6dBm radiated fundamental

power)

216-960MHz

at frequencies > 960Mhz

at harmonics

-49

dBm

-41

-40

Phase noise @ 50 kHz

Charge pump setting: ICHP=50µA;

VSUP=2.0..3.6V,

TAMB=-40..85ºC

-86

dBc/Hz

Phase noise @ 250 kHz

-92

Phase noise @ 1 MHz

-102

434MHz Frequency Band Section, EN 300 220 and/or ARIB STD-T67 are applicable

ΔFSK2

FSK Deviation

Small deviation (ARIB), programmable

(8bit)

Resolution of FSK Deviation (see Table 5)

±1.25

±4

kHz

0±64

Phase noise @ 50 kHz

Charge pump setting: ICHP=50µA;

VSUP=2.0…3.6V,

TAMB=-40…85ºC

-86

-83

dBc/Hz

Phase noise @ 250 kHz

-94

Phase noise @ 1 MHz

-102

PACP2

Adjacent Channel Power

ARIB, fREF=4MHz, ICHP=50µA

-40

dBc

OBW2

Occupied Bandwidth

Channel spacing 12.5 kHz, FSK data rate

4.8 kbit/s (ARIB)

FSK Deviation ±1.8 KHz

8.5

GF Setting (see Gaussian Filter Clock

Setting on page 38)

Channel spacing 25 kHz,

FSK data rate 9.6 kbit/s (ARIB)

FSK Deviation ±3.0 KHz

8.5

kHz

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