SM5170AV
NIPPON PRECISION CIRCUITS INC.
PLL Synthesizer IC
OVERVIEW
The SM5170AV is a PLL synthesizer IC developed
for application in pagers. It incorporates indepen-
dently-controlled reference frequency and FIN input
frequency dividers, and operates from a low-voltage
supply to realize low power dissipation. It features a
charge pump that operates at 3 V, making possible a
wide range of VCO designs.
FEATURES
s
s
Supply voltages
• V
DD1
= 0.95 to 1.2 V
(prescaler, counters)
• V
DD2
= 2.0 to 3.3 V (charge pump)
FIN input frequency
• f
FIN
= 300 MHz (V
DD1
= 0.95 V)
• f
FIN
= 330 MHz (V
DD1
= 1.0 V)
s
s
s
s
s
Reference frequency
• f
XIN
= 25 MHz (V
DD1
= 0.95 V)
20 to 262140 reference frequency divider ratio
range (with 1/4 prescaler built-in)
1056 to 131071 FIN input frequency divider ratio
range
−
10 to 60
°
C operating temperature range
16-pin VSOP
PINOUT
(Top view)
XIN
XOUT
VDD2
DB
DO
VSS
FIN
VDD1
1
16
TEST
NC
OPR
LE
DATA
CLK
LD
5170AV
8
9
NC
ORDERING INFORMATION
D e vice
S M 5 1 7 0 AV
P ackag e
16-pin V S O P
NIPPON PRECISION CIRCUITS—1
NPC [ NIPPON PRECISION CIRCUITS INC ]
