ML2721 데이터 시트보기 (PDF) - Micro Linear Corporation
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ML2721 Datasheet PDF : 27 Pages
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PIN CONFIGURATION
PRELIMINARY
ML2721
32-Pin TQFP (H32-7)
XCEN
RXON
PLLEN
EN
DATA
CLK
LD/TPQ
VSS
32 31 30 29 28 27 26 25
1
24
2
23
3
22
4
21
5
20
6
19
7
18
8
17
9 10 11 12 13 14 15 16
VCC
5
TRFO
RVCC
4
RRFI
GND
GND
GND
GND
TOP VIEW
ML2721
PIN DESCRIPTIONS
Pin # Signal Name
I/O
Description
Power & Ground
13
VCC2
24
VCC5
16
GND
10
RVCC1
14
RVCC3
22
RVCC4
27
RVCC6
I (analog)
I (analog)
I (analog)
O (analog)
O (analog)
O (analog)
O (analog)
DC Power Supply Input to the VCO voltage regulator
DC power supply Input to Voltage Regulators and unregulated loads:
2.7 to 5.0V. VCC5 is the main (or master) analog VCC pin. There must
be a capacitor to ground from this pin to decouple (bypass) noise and
to stabilize the regulator
DC ground for VCO and LO circuits
DC power supply decoupling point for the PLL dividers, phase detector,
and charge pump. This pin is connected to the output of the regulator
and to the PLL supplies. There must be a capacitor to ground from this
pin to decouple (bypass) noise and to stabilize the regulator
DC power supply decoupling point for the VCO. Connected to the
output of the VCO regulator. There must be a capacitor to ground from
this pin to decouple (bypass) noise and to stabilize the regulator
DC power supply decoupling point for the LO Chain. Connected to the
output of a regulator. There must be a capacitor to ground from this pin
to decouple (bypass) noise and to stabilize the regulator
DC power supply decoupling point for Quadrature Mixer and IF filter
circuits. There must be a capacitor to ground from this pin to decouple
(bypass) noise and to stabilize the regulator
January, 2000 PRELIMINARY DATASHEET
5
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