ATR2732N3 Datasheet, PDF (4/14 Pages) ATMEL Corporation – Integrated DAB One-chip Front End

Table 2-1.
Pin
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
Paddle
Pin Description (Continued)
Symbol Function
PFDOUTV Output-of-phase comparator for VHF VCO (connected to PLL loop filter)
IF2IN+ (Differential) Input of 2nd IFVGA
IF2IN– (Differential) Input of 2nd IFVGA
AGCIF Connection for time-constant capacitor of IFVGAs’ AGC
IFAGCIN+ Input of IFAGC detector (differential with pin 48)
IF2O+ (Differential) Output of 2nd IFVGA
IF2O– (Differential) Output of 2nd IFVGA
IFAGCIN– Input of IFAGC detector (differential with pin 45)
VA2 Supply voltage
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)
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
MOSI Input of SPI bus (data, refer to SPI bus protocol)
NSS Input of SPI bus (chip select, refer to SPI bus protocol)
SCK Input of SPI bus (clock, refer to SPI bus protocol)
MISO Output of SPI bus (data, refer to SPI bus protocol)
XOUT
Crystal oscillator clock output to baseband
If used: AC-couple to baseband (single VCXO concept)
If not used: short-circuit to GND
VDI Supply voltage from baseband (1.65V to 3.6V) to adaptation interface to baseband
XTALA Connection for reference clock crystal
XTALB Connection for reference clock crystal
VDD Supply for digital circuits
PFDOUTL Output of phase comparator for VCO for L-band (connected to PLL loop filter)
GDMIXL Ground (L-band mixer)
MILIN+ (Differential) Input of L-band mixer
MILIN– (Differential) Input of L-band mixer
GND Ground
4 ATR2732N3
9129AS–DAB–04/08