lmx2335u National Semiconductor Corporation, lmx2335u Datasheet - Page 5

• Manufacturer Part Number: lmx2335u
• Description: Pllatinum Ultra Low Power Dual Frequency Synthesizer For Rf Personal Communications
• Manufacturer: National Semiconductor Corporation

f
f
IN
IN
Name
GND
GND
Pin Descriptions
RF2
RF2
V
Pin
NC
D
V
RF2
RF2
CC
P
o
LMX2336U
Pin No.
UTCSP
20-Pin
13
14
15
16
17
18
19
X
LMX2336U
Pin No.
TSSOP
20-Pin
14
15
16
17
18
19
20
X
(Continued)
LMX2336U
1, 9, 13,
Pin No.
24-Pin
CSP
16
17
18
19
20
22
23
21
LMX2335U
Pin No.
TSSOP
16-Pin
12
13
14
15
16
X
X
X
LMX2335U
Pin No.
16-Pin
CSP
5
11
12
13
14
15
X
X
X
I/O
O
–
–
–
–
−
I
I
LMX2335U: Don’t care.
LMX2336U: Ground for the RF2 PLL analog
circuitry.
LMX2335U: Don’t care.
LMX2336U: RF2 PLL prescaler complementary
input. For single ended operation, this pin should
be AC grounded. The LMX2336U RF2 PLL can
be driven differentially when the bypass
capacitor is omitted.
RF2 PLL prescaler input. Small signal input from
the VCO.
LMX2335U: Ground for the RF2 PLL analog and
digital circuits, MICROWIRE, F
circuits. LMX2336U: Ground for the RF2 PLL
digital circuitry, MICROWIRE, F
oscillator circuits.
RF2 PLL charge pump output. The output is
connected to the external loop filter, which drives
the input of the VCO.
RF2 PLL charge pump power supply. Must be ≥
V
Power supply bias for the RF2 PLL analog and
digital circuits, MICROWIRE, F
circuits. V
Bypass capacitors should be placed as close as
possible to this pin and be connected directly to
the ground plane.
LMX2335U: Don’t Care.
LMX2336U: No connect.
CC
.
CC
may range from 2.7V to 5.5V.
Description
o
o
o
LD and oscillator
LD and oscillator
LD and
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