RF2642PCBA41X 参数 Datasheet PDF下载

RF2642

Application Schematic

NOTE:

1. 1 nF: DC blocking capacitor - this can be removed if the filter is DC blocked.

2. T-attenuator - this is to control the overall gain of the upconverter + PA driver. This can be set to zero if it is desired.

VCC

10 nF

LO IN

Gain Select

1 nF

1 nF

10 nF

3.9 nH

PA OUT

1 nF

1

8.2 nH

VPA2

10 nF

2

3

4

Formed by stripline

RF GND2

Variable2

16

15

14

13

Logic

Control

12

11

10

1 nF

IF+

1 nF

IF-

5

6

7

8

9

2642400B

Formed by stripline

RF GND1

Variable1

10 nF

PD

8.2 nH

VPA1

10 nF

1 nF

See Note 1

5.1

Ω

820

Ω

820

Ω

RF SAW

Filter

1 nF

See Note 1

See Note 2

Rev A8 060925

6-53