CC400

SWRS050

Page 8 of 32

10.

Pin Assignment

Pin no.

Pin name

Pin type

Description

1

AVDD

Power (A)

Power supply (3V) for analog modules (Mixer, IF, demodulator)

2

AGND

Ground (A)

Ground connection (0V) for analog modules (substrate)

3

AGND

Ground (A)

Ground connection (0V) for analog modules (Mixer, IF,

demodulator)

4

AGND

Ground (A)

Ground connection (0V) for analog modules (LNA and PA)

5

RF_IN

RF Input

RF signal input from antenna (external ac-coupling)

6

RF_OUT

RF output

RF signal output to antenna (external bias)

7

AVDD

Power (A)

Power supply (3V) for analog modules (LNA and PA)

8

AVDD

Power (A)

Power supply (3V) for analog modules (VCO)

9

VCO_IN

Analog input

External VCO-tank input

10

AGND

Ground (A)

Ground connection (0V) for analog modules (VCO)

11

AGND

Ground (A)

Ground connection (0V) for analog modules (Prescaler)

12

CHP_OUT

Analog output

Charge pump current output

13

AVDD

Power (A)

Power supply (3V) for analog modules (Prescaler)

14

AVDD

Power (A)

Power supply (3V) for analog modules (XOSC)

15

XOSC_Q1

Analog input

Crystal, pin 1, or external clock input

16

XOSC_Q2

Analog output

Crystal, pin 2

17

AGND

Ground (A)

Ground connection (0V) for analog modules (XOSC)

18

DGND

Ground (D)

Ground connection (0V) for digital modules (substrate)

19

LOCK

Digital output

PLL Lock Indicator. Output is high when PLL is in lock. Please

refer to chapter “PLL Lock Indicator” on page 16 for a further

description.

20

DGND

Ground (D)

Ground connection (0V) for digital modules (Digital)

21

DVDD

Power (D)

Power supply (3V) for digital modules (Digital)

22

DVDD

Power (D)

Power supply (3V) for digital modules (Guard)

23

DIO

Digital

input/output (bi-

directional)

Data input in transmit mode

Demodulator output in receive mode

24

CLOCK

Digital input

Programming clock for 3-wire bus

25

PDATA

Digital input

Programming data for 3-wire bus

26

STROBE

Digital input

Programming strobe (Load) for 3-wire bus

27

IF_IN

Analog input

Input to IF chain

(from external ceramic filter). The input

impedance is 1.5 k

Ω so a direct connection to an external ceramic

filter is possible

28

IF_OUT

Analog output

Output from first amplifier in IF-chain (to external ceramic filter).

The output impedance is 1.5 k

Ω so a direct connection to an

external ceramic filter is possible

A=Analog, D=Digital

Figure 1: Pin-out top view

1

14

15

AVDD

AGND

AGND

AGND

RF_IN

RF_OUT

AVDD

AVDD

VCO_IN

AGND

AGND

AVDD

CHP_OUT

AVDD

2

3

4

6

5

7

8

9

11

12

13

10

28

IF_OUT

IF_IN

STROBE

PDATA

CLOCK

DIO

DVDD

DVDD

DGND

LOCK

DGND

XOSC_Q2

AGND

XOSC_Q1

27

26

25

23

24

22

21

20

18

17

16

19