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THERMAL CHARACTERISTICS

TRF3710

SLWS199A – AUGUST 2007 – REVISED FEBRUARY 2008

TERMINAL FUNCTIONS

TERMINAL

I/O

DESCRIPTION

NAME

NO.

AGND

26, 35

Analog ground; grounds can be tied together.

BBIoutn

33

O

Baseband I output: negative terminal

BBIoutp

34

O

Baseband I output: positive terminal

BBQoutn

27

O

Baseband Q output: negative terminal

BBQoutp

28

O

Baseband Q output: positive terminal

CHIP_EN

3

I

Chip enable; enabled = logic level 1, disabled = logic level 0

CLOCK

48

I

SPI clock input

SPI data input (programming data for baseband filter frequency setting, PGA gain settings, and dc

DATA

47

I

offset calibration).

Gain_B0

41

I

PGA fast-gain control bit 0

Gain_B1

40

I

PGA fast-gain control bit 1

Gain_B2

39

I

PGA fast-gain control bit 2

GNDBIAS

22

Bias-block ground. Grounds can be tied together.

GNDDIG

1

Digital ground. Grounds can be tied together.

LOin

30

I

Local oscillator input: negative terminal

LOip

31

I

Local oscillator input: positive terminal

Mixer input: negative terminal, connected to external balanced-to-unbalanced (balun) transformer;

MIXinn

7

I

balun type is frequency-specific.

MIXIoutn

44

O

Mixer I output: negative terminal (test pin). NC for normal operation

MIXIoutp

45

O

Mixer I output: positive terminal (test pin). NC for normal operation

MIXinp

6

I

Mixer input: positive terminal, connected to external balun; balun type is frequency-specific.

MIXQoutn

17

O

Mixer Q output: negative terminal (test pin). NC for normal operation

MIXQoutp

16

O

Mixer Q output: positive terminal (test pin). NC for normal operation

REXT

20

O

Reference-bias external resistor: 30 k

Ω; used to set the bias of internal circuits of chip

STROBE

46

I

SPI enable (latches data into SPI after final clock pulse. Logic level = 1.

VCCBBQ

25

Baseband Q-chain power supply, 4.5 V to 5.5 V. Decoupled from other sources

VCCBIAS

21

Bias-block power supply, 4.5 V to 5.5 V. Decoupled from other sources

VCCDIG

2

Digital power supply, 4.5 V to 5.5 V. Decoupled from other sources

VCCLO

29

Local oscillator power supply, 4.5 V to 5.5 V. Decoupled from other sources

VCCMIX

4, 9

Mixer power supply, 4.5 V to 5.5 V. Decoupled from other sources

VCMQ

24

I

Baseband Q-chain input common mode, nominally 1.5 V

VOFFQ

23

I

Q-chain analog-offset correction input, 0 V to 3 V.

VCCBBI

36

Baseband I power supply, 4.5 V to 5.5 V. Decoupled from other sources

VCMI

37

I

Baseband I chain input common mode, nominally 1.5 V

VOFFI

38

I

I-chain analog-offset correction input, 0 V to 3 V

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

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Soldered slug, no airflow

26

Soldered slug, 200-LFM (1,016 m/s) airflow

20.1

Thermal derating, junction-to-ambient

°C/W

Soldered slug, 400-LFM (2,032 m/s) airflow

17.4

(2)

7-mm

× 7-mm, 48-pin PDFP

25

Thermal derating, junction-to-board

7-mm

× 7-mm, 48-pin PDFP

12

°C/W

(1)

Determined using JEDEC standard JESD-51 with high-K board

(2)

16 layers, high-K board

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Product Folder Link(s): TRF3710