PIN

NAME

TYPE

FUNCTION

1, 3, 7, 9, 52, 54,

58, 60, 61, 63,

67, 69, 72,

74, 78, 80

GND

RF Shield

Ground for Shield of RF Signal

2

RFINDLYA

Analog In

Delayed RF Single-Ended Input Signal for Tx Path A

4, 5

AIN0A, AIN1A

Analog In

Do not connect. Reserved for internal use.

6, 10–13, 48–51,

55, 64, 66,

70, 71, 75, 77

AVDD18

Supply

+1.8V DC Supply Voltage for Analog Circuits

8

RFINA

Analog In

RF 50Ω Input Signal for Tx Path A

14–18

AIO0A–AIO4A

Analog In/Out

Do not connect. Reserved for internal use.

19

XTALI

Analog In

Oscillator or External Clock Input. For the oscillator, connect a 20MHz

crystal across XTALI to XTALO. For the external clock, connect clock

source operating at 10, 13, 15.36, 19.2, 20, 26, 30.72MHz. Refer to the

Hardware Design Guide for details.

20

XTALO

Analog Out

Crystal Output. Excitation driver for crystal or ceramic resonator.

21

MS0

Digital In

Load Enable. Required to program FW upgrades to internal EEPROM.

Has internal pulldown to GND.

22

MS1

Digital In

Do not connect. Reserved for internal use. Has internal pulldown to GND.

23

RESETN

Digital In

Reset when Low. Has internal pullup to DVDDIO.

24

SSCLK

Digital In

Slave SPI Clock. Has internal pulldown to GND.

25

SSSN

Digital In

Slave SPI Select Enabled Low. Has internal pullup to DVDDIO.

26

SSDI

Digital In

Slave SPI Data Input to RFPAL. Has internal pulldown to GND.

27

SSDO

Digital Out

Slave SPI Data Output from RFPAL. Three-state. DVDDIO logic levels.

28

INTRN

Digital Out

General-Purpose Digital Output Controlled by FW. Notifies or interrupts

the SPI host when low that (e.g., alarm) information is available to be

collected. Open-drain output with internal pullup to DVDDIO.

29, 32, 37

DVDD18

Supply

+1.8V DC Supply Voltage for Digital Circuits

30, 36

DVDDIO

Supply

+1.8V DC Supply Voltage for Digital I/O Interface Circuits

31, 33–35, 38–42

DIO0–DI08

Digital In/Out

Do not connect. Reserved for internal use.

43–47

AIO4B–AIO0B

Analog In/Out

Do not connect. Reserved for internal use.

53

RFINB

Analog In

RF Single-Ended Input Signal for Tx Path B

56, 57

AIN1B, AIN0B

Analog In

Do not connect. Reserved for internal use.

59

RFINDLYB

Analog In

Delayed RF Single-Ended Input Signal for Tx Path B

62

RFOUTB

Analog Out

RF Single-Ended Output Signal for Tx Path B

65

RFAUXB

Analog Out

Do not connect. Reserved for internal use.

68

RFFBB

Analog In

RF Single-Ended Feedback Signal for Tx Path B

73

RFFBA

Analog In

RF Single-Ended Feedback Signal for Tx Path A

76

RFAUXA

Analog Out

Do not connect. Reserved for internal use.

79

RFOUTA

Analog Out

RF Single-Ended Output Signal for Tx Path A

81

GND

Supply

Exposed Pad. Serves as supply ground and thermal interface.

SC2200

Dual RF Power Amplifier Linearizer (RFPAL)

www.maximintegrated.com

Maxim Integrated │ 7

Pin Description