4

9129AS–DAB–04/08

ATR2732N3

41

PFDOUTV

Output-of-phase comparator for VHF VCO (connected to PLL loop filter)

42

IF2IN+

(Differential) Input of 2nd IFVGA

43

IF2IN

–

(Differential) Input of 2nd IFVGA

44

AGCIF

Connection for time-constant capacitor of IFVGAs’ AGC

45

IFAGCIN+

Input of IFAGC detector (differential with pin 48)

46

IF2O+

(Differential) Output of 2nd IFVGA

47

IF2O

–

(Differential) Output of 2nd IFVGA

48

IFAGCIN

–

Input of IFAGC detector (differential with pin 45)

49

VA2

Supply voltage

50

WAGC

Window AGC input: All AGCs frozen and currents to capacitors switched off (necessary during Null Symbol

or when unused symbols are left out and the part is powered down using the SWITCHEN input)

51

SWITCHEN

Input for selection between the two enable registers, allowing a fast change between reduced, low-current,

and normal-reception mode, and offering current-saving capability

52

MOSI

Input of SPI bus (data, refer to SPI bus protocol)

53

NSS

Input of SPI bus (chip select, refer to SPI bus protocol)

54

SCK

Input of SPI bus (clock, refer to SPI bus protocol)

55

MISO

Output of SPI bus (data, refer to SPI bus protocol)

56

XOUT

Crystal oscillator clock output to baseband

If used: AC-couple to baseband (single VCXO concept)

If not used: short-circuit to GND

57

VDI

Supply voltage from baseband (1.65V to 3.6V) to adaptation interface to baseband

58

XTALA

Connection for reference clock crystal

59

XTALB

Connection for reference clock crystal

60

VDD

Supply for digital circuits

61

PFDOUTL

Output of phase comparator for VCO for L-band (connected to PLL loop filter)

62

GDMIXL

Ground (L-band mixer)

63

MILIN+

(Differential) Input of L-band mixer

64

MILIN

–

(Differential) Input of L-band mixer

Paddle

GND

Ground

Table 2-1.

Pin Description (Continued)

Pin

Symbol

Function