UMA1015M NXP Semiconductors, UMA1015M Datasheet - Page 2

• Manufacturer Part Number: UMA1015M
• Description: Low-power Dual Frequency Synthesizer For Radio Communications
• Manufacturer: NXP Semiconductors

Philips Semiconductors
FEATURES
APPLICATIONS
QUICK REFERENCE DATA
1995 Jun 22
V
V
V
I
I
I
+ I
I
f
f
f
f
T
DDO1
CCO
DD1pd
DD1pd
RFA
XTALIN
pc(min)
pc(max)
amb
Two fully programmable RF dividers up to 1.1 GHz
Fully programmable reference divider up to 35 MHz
2 : 1 or 1 : 1 ratio of selectable reference frequencies
Fast three-line serial bus interface
Adjustable phase comparator gain
Programmable out-of-lock indication for both loops
On-chip voltage doubler
Low current consumption from 3 V supply
Separate power-down mode for each synthesizer
Up to 4 open-drain output ports.
Cordless telephone
Hand-held mobile radio.
DD1
CC
CCvd
Low-power dual frequency synthesizer
for radio communications
CCpd
SYMBOL
, f
, V
RFB
+I
+ I
DD2
DDO2
DD2pd
+
digital supply voltage
charge pump supply
voltage
charge pump supply from
voltage doubler
operating supply current
current in power-down
mode per supply
current in power-down
mode from supply V
RF input frequency for
each synthesizer
crystal input frequency
minimum phase
comparator frequency
maximum phase
comparator frequency
operating ambient
temperature
PARAMETER
DD
V
external supply; doubler
disabled; V
doubler enabled
both synthesizers ON; doubler
disabled; V
doubler disabled;
V
doubler enabled;
V
f
f
f
f
synthesizer A
2.6 V
synthesizer B
2.6 V
synthesizer B
2.6 V
RF
XTALIN
RF
XTALIN
DD1
DD1
DD1
= 50 to 1100 MHz;
= 50 to 1100 MHz;
= V
= V
= V
= 3 to 35 MHz
= 3 to 35 MHz
V
V
V
CONDITIONS
DD2
DD2
DD2
DD
DD
DD
CC
DD1
2
= 5.5 V
= 3 V
GENERAL DESCRIPTION
The UMA1015M is a low-power dual frequency
synthesizer for radio communications which operates in
the 50 to 1100 MHz frequency range. Each synthesizer
consists of a fully programmable main divider, a phase and
frequency detector and a charge pump. There is a fully
programmable reference divider common to both
synthesizers which operates up to 35 MHz. The device is
programmed via a 3-wire serial bus which operates up to
10 MHz. The charge pump currents (gains) are fixed by an
external resistance at pin 20 (I
designed to operate from 2.6 V (3 Ni-Cd cells) to 5.5 V at
low current. Digital supplies V
same potential. The charge pump supply (V
provided by an external source or on-chip voltage doubler.
V
synthesizer can be powered-down independently via the
serial bus to save current. It is also possible to power-down
the device via the HPD input (pin 5).
5.5 V
4.5 V
5.0 V
= V
CC
V
DD
must be equal to or higher than V
DD2
= 5.5 V
2.6
2.6
50
3
0
MIN.
30
30
2V
9.6
0.01
0.15
10
750
DD1
SET
DD1
TYP.
). The BiCMOS device is
and V
Product specification
0.6 6.0
UMA1015M
DD1
DD2
. Each
5.5
6.0
1100
35
+85
+85
+85
MAX.
must be at the
CC
) can be
V
V
V
mA
mA
mA
MHz
MHz
kHz
kHz
UNIT
C
C
C