參數(shù)資料
型號: LMX2335UTM/NOPB
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: PLL合成/DDS/VCOs
英文描述: PLL FREQUENCY SYNTHESIZER, 1200 MHz, PDSO16
封裝: PLASTIC, TSSOP-16
文件頁數(shù): 44/48頁
文件大?。?/td> 3127K
代理商: LMX2335UTM/NOPB
Pin Descriptions (Continued)
Pin
Name
Pin No.
LMX2336U
20-Pin
UTCSP
Pin No.
LMX2336U
20-Pin
TSSOP
Pin No.
LMX2336U
24-Pin
CSP
Pin No.
LMX2335U
16-Pin
TSSOP
Pin No.
LMX2335U
16-Pin
CSP
I/O
Description
GND
13
14
16
X
LMX2335U: Don’t care.
LMX2336U: Ground for the RF2 PLL analog
circuitry.
f
IN RF2
14
15
17
X
I
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.
f
IN RF2
15
16
18
12
11
I
RF2 PLL prescaler input. Small signal input from
the VCO.
GND
16
17
19
13
12
LMX2335U: Ground for the RF2 PLL analog and
digital circuits, MICROWIRE, F
oLD and oscillator
circuits. LMX2336U: Ground for the RF2 PLL
digital circuitry, MICROWIRE, F
oLD and
oscillator circuits.
D
o
RF2
17
18
20
14
13
O
RF2 PLL charge pump output. The output is
connected to the external loop filter, which drives
the input of the VCO.
V
P
RF2
18
19
22
15
14
RF2 PLL charge pump power supply. Must be
V
CC.
V
CC
19
20
23
16
15
Power supply bias for the RF2 PLL analog and
digital circuits, MICROWIRE, F
oLD and oscillator
circuits. V
CC may range from 2.7V to 5.5V.
Bypass capacitors should be placed as close as
possible to this pin and be connected directly to
the ground plane.
NC
X
1, 9, 13,
21
X
LMX2335U: Don’t Care.
LMX2336U: No connect.
LMX2335U/LMX2336U
www.national.com
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