MC12052A Datasheet, PDF (1/4 Pages) Motorola, Inc – 1.1 GHz Super Low Power Dual Modulus Prescaler

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1.1 GHz Super Low Power
Dual Modulus Prescaler
The MC12052A is a super low power dual modulus prescaler used in
phase–locked loop applications. Motorola’s advanced Bipolar MOSAIC™ V
technology is utilized to achieve low power dissipation of 2.7 mW at a
minimum supply voltage of 2.7 V.
The MC12052A can be used with CMOS synthesizers requiring positive
edges to trigger internal counters such as Motorola’s MC145XXX series in a
PLL to provide tuning signals up to 1.1 GHz in programmable frequency
steps.
A Divide Ratio Control (SW) permits selection of a 64/65 or 128/129 divide
ratio as desired.
The Modulus Control (MC) selects the proper divide number after SW has
been biased to select the desired divide ratio.
• 1.1 GHz Toggle Frequency
• The MC12052 is Pin and Functionally Compatible with the MC12022
• Low Power 1.0 mA Typical
• 2.0 mA Maximum, –40 to 85°C, VCC = 2.7 to 5.5 Vdc
• Short Setup Time (tset) 16 ns Maximum @ 1.1 GHz
• Modulus Control Input Level is Compatible with Standard CMOS and
TTL
• Maximum Input Voltage Should Be Limited to 6.5 Vdc
MC12052A
MECL PLL COMPONENTS
÷64/65, ÷128/129 LOW POWER
DUAL MODULUS PRESCALER
SEMICONDUCTOR
TECHNICAL DATA
8
1
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
MOSAIC V is a trademark of Motorola
FUNCTIONAL TABLE
SW
MC
Divide Ratio
H
H
64
H
L
65
L
H
128
L
L
129
NOTES: 1. SW: H = VCC, L = Open. A logic L can also be applied by grounding this pin,
but this is not recommended due to increased power consumption.
2. MC: H = 2.0 V to VCC, L = GND to 0.8 V.
MAXIMUM RATINGS
Characteristic
Power Supply Voltage, Pin 2
Operating Temperature Range
Storage Temperature Range
Modulus Control Input, Pin 6
Symbol
Range
Unit
VCC
–0.5 to 7.0
Vdc
TA
–40 to 85
°C
Tstg
–65 to 150
°C
MC
–0.5 to 6.5
Vdc
PIN CONNECTIONS
IN ¹
VCC 2
SW 3
OUT ⁴
8 IN
7 _NC
6 MC
5 Gnd
(Top View)
ORDERING INFORMATION
Device
Operating
Temp Range
Package
MC12052AD TA =–40 to 85°C
SO–8
© Motorola, Inc. 1998
MOTOROLA RF/IF DEVICE DATA For More Information On This Product,
Go to: www.freescale.com
Rev 4
1