TRF4903

SINGLECHIP MULTIBAND RF TRANSMITTER

SWRS023B − MAY 2004 − REVISED MARCH 2005

4

POST OFFICE BOX 655303

Terminal Functions

TERMINAL

I/O

DESCRIPTION

NAME

NO.

I/O

DESCRIPTION

CLOCK

24

I

Serial interface clock signal input

CP_GND

15

Charge pump ground

CP_OUT

14

O

Charge pump output

CP_VCC

13

Charge pump supply voltage

DATA

23

I

Serial interface data signal input

DET_LD_DCLK

16

O

Brownout detector (active high), PLL lock detect (active high), and data clock multiplexed

output

DGND

18

Digital and XTAL oscillator ground

DVDD

17

Digital and XTAL oscillator power supply

GND

21

Substrate ground

MODE

2

I

Mode select input

PA_GND1

5

Power amplifier ground

PA_GND2

7

Power amplifier ground

PA_OUT

4

O

Power amplifier output

PA_VCC

6

Power amplifier supply voltage

STDBY

3

I

Standby input signal; active low

STROBE

22

I

Serial interface strobe signal

TX_DATA

1

I

Buffered TX data input

VCO_BYPASS

11

I

VCO bypass; connect to ground through a 100-pF capacitor

VCO_GND

9

VCO ground

VCO_TUNE

12

I

Tuning voltage for the integrated VCO

VCO_CORE_VCC

10

VCO core supply voltage

VCO_PRE_VCC

8

Divider and prescaler supply voltage

XTAL

19

I/O

Connection to an external crystal reference

XTAL_SW

20

I

Connection to external capacitor, which sets the frequency deviation of the transmitted signal

Supply voltage range

−0.6 to 4.5 Vdc

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input voltage, logic signals

−0.6 to 4.5 Vdc

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

−65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ESD protection, human body model (HBM)

2 kV

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

recommended operating conditions

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Analog supply voltage

2.2

3.6

V

Digital supply voltage

2.2

3.6

V

Operating free-air temperature

−40

85

°C