Confidential
PMB 2341
preliminary
Product Description
2.1 Overview
The PMB 2341 is a monolithic, low power, high performance phase-locked-loop (PLL)
frequency synthesizer. It is primarily designed to be used for very stable low noise LO
signals in mobile communication systems such as GSM, PCN (GSM 1800), PCS and
PDC. The wide range of divider rations also allows application in modern analog sys-
tems.
2.2 Features
B6HFC BiCMOS technology
2.7 to 4.5 V operation
Low operating power consumption
Programmable power down modes
High input sensitivity and high input frequencies up to 2.5 GHz
Reference frequencies up to 100 MHz.
Programmable dual modulus prescaler divide ratio (1:64/65 or 1:32/33).
Dividing ratios: A, N, R counter: 0 to 63, 3 to 4095, 3 to 4095, respectively
Fast phase detector with switchable polarity
charge pump output with programmable current and without dead zone
Fast serial 3-wire bus interface with low threshold voltage Schmitt-Trigger inputs
One multi-functional port
Very small Mini-TSSOP-10 Package
2.3 Package outline
0.5
0.22 ±0.05
A
0.1 A
0.08 M A B C
3 ±0.1
H
C
0.42
+0.15
-0.1
4.9
0.25 M A B C
3 ±0.1
B
Index Marking
Figure 2-1 Mini-TSSOP-10
Wireless Components
2-2
Specification, February 2000