Atmel ATR4262M1 사용자 설명서

4994BS–AUDR–05/08

20

AFCC

AFC control input/SW6 switching output/lock detect/AFHOLD

21

VRVCO

Reference voltage VCO

22

VCOB

VCO resonator (base)

23

VCOE

VCO resonator (emitter)

24

GNDVCO

VCO ground

25

VCOBUF

VCO buffer output/input

26

GNDPLL

PLL ground

27

VTUNE

Tuning voltage output

28

FMLF

PLL loopfilter FM

29

AMLF

PLL loopfilter AM

30

VRPLL

Reference voltage digital

31

REF2

RefClockInput2/crystal oscillator

32

REF1

RefClockInput1/crystal oscillator

33

VSPLL

Supply voltage digital input

34

IFOUT2

IF output 2

35

IFOUT1

IF output 1

36

SW3

SW3 switching output/lock detect/AFSAMPLE

37

AMAGCTC2

RF AGC AM time constant 2

38

IFIN3

IF amplifier input

39

VRT

Reference voltage tuner

40

IFIN2

IF amplifier input

41

IFREF

IF reference voltage

42

IFIN1

IF amplifier input

43

VST

Supply voltage tuner

44

FMOUT2

FM mixer output

45

FMOUT1

FM mixer output

46

AMAGCTC1

RF AGC AM time constant 1

47

AMOUT2

AM mixer output/FM Mixer Output 4

48

AMOUT1

AM mixer output/FM Mixer Output 3

Die pad

GNDT_PAD

Tuner RF and IF Ground

Pin Description