LMX2335L National Semiconductor Corporation, LMX2335L Datasheet - Page 3

• Manufacturer Part Number: LMX2335L
• Description: Pllatinum? Low Power Dual Frequency Synthesizer For Rf Personal Communications
• Manufacturer: National Semiconductor Corporation

2336LTM 2336LSLB 2335LTM 2335LSLB
Pin No.
Pin Descriptions
10
11
12
13
14
15
16
17
18
19
20
X
8
9
1, 9, 13, 21
Pin No.
10
11
12
14
15
16
17
18
19
20
22
23
8
Pin No. Pin No.
10
11
12
13
14
15
16
X
X
X
6
7
8
9
(Continued)
10
11
12
13
14
15
X
X
X
5
6
7
8
9
OSC
OSC
F
Clock
Data
LE
GND
/f
f
GND
D
V
V
NC
IN
Name
o
IN
p
CC
o
Pin
LD
2
2
2
2
2
in
out
I/O
O
O
O
I
I
I
I
I
I
Oscillator input. The input has a V
driven from an external CMOS or TTL logic gate.
Oscillator output.
Multiplexed output of the programmable or reference dividers, lock
detect signals and Fastlock mode. CMOS output (see
Programmable Modes).
High impedance CMOS Clock input. Data for the various latches
is clocked in on the rising edge, into the 20-bit shift register.
Binary serial data input. Data entered MSB first. The last two bits
are the control bits. High impedance CMOS input.
Load enable high impedance CMOS input. When LE goes HIGH,
data stored in the shift registers is loaded into one of the 4
appropriate latches (control bit dependent).
Ground for RF2 analog circuitry.
RF2 prescaler complementary input. A bypass capacitor should
be placed as close as possible to this pin and be connected
directly to the ground plane. Capacitor is optional with loss of
some sensitivity.
RF2 prescaler input. Small signal input from the VCO.
LMX2335L: Ground for RF2 analog, RF2 digital, MICROWIRE,
F
MICROWIRE, F
RF2 charge pump output. For connection to a loop filter for driving
the input of an external VCO.
Power supply for RF2 charge pump. Must be ≥ V
Power supply voltage input for RF2 analog, RF2 digital,
MICROWIRE, F
2.7V to 5.5V. V
be placed as close as possible to this pin and be connected
directly to the ground plane.
No connect.
3
o
LD and Oscillator circuits. LMX2336L: Ground for IF digital,
CC
o
o
LD and oscillator circuits.
LD and oscillator circuits. Input may range from
2 must equal V
Description
CC
CC
1. Bypass capacitors should
/2 input threshold and can be
CC
.
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