EVB71120-315-FM-A 参数 Datasheet PDF下载

EVB71120

300 to 930MHz Receiver

Evaluation Board Description

2.2

Standard Frequency Plans

IF2 = 455kHz

f

RF

[MHz]

315

433.92

868.3

915

f

IF1

[MHz]

105.6067

145.2467

289.1300

304.6967

f

LO1

[MHz]

420.6067

579.1667

579.1700

610.3033

f

LO2

[MHz]

105.1517

144.7917

289.5850

305.1517

f

RO

[MHz]

17.525277

24.131944

24.132083

25.429305

IF2 = 10.7MHz

f

RF

[MHz]

315

433.92

868.3

915

f

IF1

[MHz]

119.2667

158.0667

282.3000

297.8667

f

LO1

[MHz]

434.2667

592.8267

586.0000

617.1333

f

LO2

[MHz]

108.5667

148.2067

293.0000

308.5667

f

RO

[MHz]

18.094444

24.701111

24.416666

25.713888

2.3

433/868MHz Frequency Diversity

The receiver’s multi-band functionality can be used to operate at two different frequency bands just by

changing the logic level at pin RFSEL and without changing the crystal. This feature is applicable for

common use of the 433 and 868MHz bands. Below table shows the corresponding frequency plans.

IF2 = 455kHz

RFSEL

0

1

f

RF

[MHz]

433.9225

868.3

Y

R

A

IN

IM

L

E

R

P

f

IF1

[MHz]

f

LO1

[MHz]

579.17

f

LO2

[MHz]

144.7925

145.2483

289.1300

579.17

289.5850

f

RO

[MHz]

24.132083

39012 71120 01

Rev. 003

Page 8 of 18

EVB Description

Jan/08