LMX2331LSLBX National Semiconductor, LMX2331LSLBX Datasheet - Page 4

• Manufacturer Part Number: LMX2331LSLBX
• Description: PLL Frequency Synthesizer Dual 45MHz to 2000MHz 24-Pin LAM CSP T/R
• Manufacturer: National Semiconductor
• Type: PLL Frequency Synthesizerr

Specifications of LMX2331LSLBX

• Package: 24LAM CSP
• Number Of Elements Per Chip: 2
• Operating Temperature: -40 to 85 °C
• Operating Supply Voltage: 3 V

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LMX233XLSL
D 20-pin Thin
CSP Package
Pin Descriptions
Pin No.
20
10
11
12
13
14
15
16
17
18
19
X
1
2
3
4
5
6
7
8
9
LMX233XLSL
B 24-pin CSP
1, 9, 13, 21
Package
Pin No.
24
10
11
12
14
15
16
17
18
19
20
22
23
2
3
4
5
6
7
8
20-pin TSSOP
LMX233XLTM
Package
Pin No.
12806 Version 9 Revision 2
10
11
12
13
14
15
16
17
18
19
20
X
1
2
3
4
5
6
7
8
9
V
V
D
GND
f
f
GND
OSC
GND
F
Clock
Data
LE
GND
f
f
GND
D
V
V
NC
IN
IN
IN
IN
Name
o
CC
P
P
CC
o
o
LD
Pin
1
2
RF
RF
IF
RF
RF
IF
1
2
in
I/O
—
—
—
—
—
—
—
—
—
—
O
O
O
I
I
I
I
I
I
I
I
Print Date/Time: 2011/07/11 15:54:42
4
Power supply voltage input for RF analog and RF digital circuits.
Input may range from 2.7V to 5.5V. V
capacitors should be placed as close as possible to this pin and be
connected directly to the ground plane.
Power Supply for RF charge pump. Must be
Internal charge pump output. For connection to a loop filter for
driving the input of an external VCO.
Ground for RF digital circuitry.
RF prescaler input. Small signal input from the VCO.
RF 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 some loss of
sensitivity.
Ground for RF analog circuitry.
Oscillator input. The input has a V
driven from an external CMOS or TTL logic gate.
Ground for IF digital, MICROWIRE ™ , F
Multiplexed output of the RF/IF programmable or reference
dividers, RF/IF lock detect signals and Fastlock mode. CMOS
output (see Programmable Modes).
High impedance CMOS Clock input. Data for the various counters
is clocked in on the rising edge, into the 22-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 IF analog circuitry.
IF 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 some loss of
sensitivity.
IF prescaler input. Small signal input from the VCO.
Ground for IF digital, MICROWIRE, F
IF charge pump output. For connection to a loop filter for driving
the input of an external VCO.
Power Supply for IF charge pump. Must be
Power supply voltage input for IF analog, IF digital, MICROWIRE,
F
V
close as possible to this pin and be connected directly to the ground
plane.
No connect.
o
CC
LD, and oscillator circuits. Input may range from 2.7V to 5.5V.
2 must equal V
CC
1. Bypass capacitors should be placed as
Description
CC
CC
/2 input threshold and can be
o
LD, and oscillator circuits.
1 must equal V
o
LD, and oscillator circuits.
≥
≥
V
V
CC
CC
.
.
CC
2. Bypass