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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

TRF1222

SLWS171A – APRIL 2005 – REVISED DECEMBER 2005

TERMINAL FUNCTIONS (continued)

TERMINAL

I/O

TYPE

DESCRIPTION

NO.

NAME

20

IFI N

I

Analog

IF input, negative, dc-coupled typical dc voltage is 1.2 V

22

MXRO

O

Analog

Output of mixer (after balun) 50-

Ω impedance with high impedance dc ground.

23

UCEN

I

Digital

Set high to enable IF amplifier and RF amplifiers

24

MXRADJ

O

Analog

Normally grounded. Provide 0-

Ω jumper to ground.

Not connected for normal operation. IF amplifier bias adjustment. Do not ground this

25

IFADJ

pin or connect to any other pin.

26

VDDIF

I

Power

Positive supply for IF bias circuitry 5 V

27

RFI

I

Analog

Input to RF amplifier, 50-

Ω impedance, internally ac-coupled

31

VDD1

I

Power

RF amplifier bias 5 V

Back of package has metal base that must be grounded for thermal and RF

Back

GND

performance.

over operating free-air temperature range (unless otherwise noted)

VALUE

UNIT

VDD

Positive dc supply voltage

0 to 5.5

V

-VDD

Negative dc supply voltage

-5.5 to 0

V

RF input power

10

dBm

Junction temperature

200

°C

Power dissipation

1

W

Digital input pins

-0.3 to 5.5

V

θ

jc

9.01

°C/W

Storage temperature

-40 to 105

°C

Operating temperature

-40 to 85

°C

Lead temperature (40 Sec Max)

260

°C

(1)

Thermal resistance is junction to ambient assuming thermal pad with 16 thermal vias under package metal base. See the recommended

PCB layout.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

DC CHARACTERISTICS

Positive supply voltage

4.75

5

5.25

V

Positive supply current (total)

175

200

mA

Negative supply voltage

-5.25

-5

-4.75

V

Negative supply current

3

6

mA

Supply current RF 2, pin 2

50

mA

Supply current, LO, pin 14

50

mA

Supply current, IF

Pin 17, 18, and 26 combined

47

mA

Supply current RF1, pin 31

28

mA

Input high voltage

2.5

5

V

Input low voltage

0.8

V

Input high current

300

µA

Input low current

–50

µA

3