Page 1
Order this document by MC12028A/D
SEMICONDUCTOR
TECHNICAL DATA
MECL PLL COMPONENTS
÷64/65, ÷128/129
DUAL MODULUS PRESCALER
P SUFFIX
PLASTIC PACKAGE
CASE 626
PIN CONNECTIONS
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
8
1
1
8
IN
(Top View)
8
IN
V
CC
SW
OUT
NC
MC
Gnd
7
6
5
1
2
3
4
Device
Operating
Temp Range
Package
ORDERING INFORMATION
MC12028AD
MC12028AP
TA =–40° to +85°C
SO–8
Plastic
MC12028BD
MC120228BP
SO–8
Plastic
The MC12028A 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.
The MC12028B can be used with CMOS synthesizers requiring negative
edges to trigger internal counters.
A Divide Ratio Control (SW) permits selection of a 32/33 or 64/65 divide
ratio as desired.
The Modulus Control (MC) selects the proper divide number after SW has
been biased to select the desired divide ratio.
NOTE: The “B” Version Is Not Recommended for New Designs
• 1.1 GHz Toggle Frequency
• MC12028A for Positive Edge Triggered Synthesizers
• 6.5 mA Maximum, –40 to 85°C, V
CC
= 5.5 Vdc
• Modulus Control Input Level Is Compatible With
Standard CMOS and TTL
• Low–Power 4.0 mA Typical
FUNCTIONAL TABLE
SW MC Divide Ratio
H H 32
H L 33
L H 64
L L 65
NOTES: 1.SW: H = VCC, L = Open. A logic L can also be applied by grouunding this pin,
but this is not recommended due to increased power soncumption.
2.MC: H = 2.0 V to VCC, L = GND to 0.8 V.
DESIGN GUIDE
Criteria Value Unit
Internal Gate Count* 67 ea
Internal Gate Propagation Delay 200 ps
Internal Gate Power Dissipation 0.75 mW
Speed Power Product 0.15 pJ
NOTE: * Equivalent to a two–input NAND gate
MAXIMUM RATINGS
Characteristic Symbol Range Unit
Power Supply Voltage, Pin 2 V
CC
–0.5 to 7.0 Vdc
Operating Temperature Range T
A
–40 to 85 °C
Storage Temperature Range T
stg
–65 to 150 °C
Modulus Control Input, Pin 6 MC –0.5 to 6.5 Vdc
NOTE: ESD data available upon request.
Motorola, Inc. 1997 Rev 3
Page 2
MC12028A MC12028B
2
MOTOROLA RF/IF DEVICE DATA
ELECTRICAL CHARACTERISTICS
(VCC = 4.5 to 5.5V; TA = –40 to 85°C, unless otherwise noted.)
Characteristic
Symbol Min Typ Max Unit
Toggle Frequency (Sine Wave Input) f
t
0.1 1.4 1.1 GHz
Supply Current Output Unloaded (Pin 2) I
CC
– 4.0 6.5 mA
Modulus Control Input High (MC) V
IH1
2.0 – V
CC
V
Modulus Control Input Low (MC) V
IL1
– – 0.8 V
Divide Ratio Control Input High (SW) V
IH2
V
CC
V
CC
V
CC
Vdc
Divide Ratio Control Input Low (SW) V
IL2
Open Open Open —
Output Voltage Swing (CL = 12 pF; RL = 2.2 kΩ) V
out
1.0 1.6 V
pp
Modulus Setup Time MC to Out t
set
– 11 16 ns
Input Voltage Sensitivity 250–1100 MHz
100–250 MHz
V
in
100
400
–
–
1500
1500
mVpp
Output Current (CL = 12 pF; RL = 2.2 kΩ) I
O
– 1.5 4.0 mA
A
HGFED
In
MC
In
SW
Out
Q
S
Q
C
QBD
QC
QBD
QBC
QD
C
QBD
QBC
QD
QBC
QD
B
QBC
QD
C
QB
C
QD
M
Modulus setup time MC to out is the MC
setup or MC release plus the prop delay.
Prop. Delay
In
Out
MC
MC Setup
MC Release
Figure 1. Logic Diagram (MC12028A) Figure 2. Modulus Setup Time
Figure 3. Typical Output Waveform
500 m
20 ns
≈
Page 3
MC12028A MC12028B
3
MOTOROLA RF/IF DEVICE DATA
Figure 4. AC Test Circuit
EXTERNAL COMPONENTS
C1 = C2 = 1000 pF
C3 = 0.1
µ
F
CL = 12 pF (Including Scope
and jig capacitance)
RL = 2.2 k
Ω
C
L
MC Input
C2
C1
C3
VCC = 4.5 to 5.5 V
50
Ω
Sine Wave Generator
SWV
CC
OUT
GND
MC
IN
IN
R
L
Figure 5. Typical Input Impedance versus Input Frequency
1000
GHz
0
–100
–200
–300
–400
–500
–600
900
800
700
600
500
400
300
200
100
OHMS
jX
R
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3
Page 4
MC12028A MC12028B
4
MOTOROLA RF/IF DEVICE DATA
Figure 6. Input Signal Amplitude versus Input Frequency
15
10
5
0
–5
–10
–15
–20
–25
–30
–35
–40
–45
–50
1250
710
400
225
125
71
40
22.5
12.8
7.1
4
2.25
1.25
0.71
2000
1600
1200
800
400
0
16001400120010008006004002000
FREQUENCY (MHz)
Amplitude (dBm)
mVrmsmVpp
Divide Ratio = 32
Page 5
MC12028A MC12028B
5
MOTOROLA RF/IF DEVICE DATA
P SUFFIX
PLASTIC PACKAGE
CASE 626–05
ISSUE K
D SUFFIX
PLASTIC PACKAGE
CASE 751–06
(SO–8)
ISSUE T
NOTES:
1. DIMENSION L TO CENTER OF LEAD WHEN
FORMED PARALLEL.
2. PACKAGE CONTOUR OPTIONAL (ROUND OR
SQUARE CORNERS).
3. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
14
58
F
NOTE 2
–A–
–B–
–T–
SEATING
PLANE
H
J
G
D
K
N
C
L
M
M
A
M
0.13 (0.005) B
M
T
DIM MIN MAX MIN MAX
INCHESMILLIMETERS
A 9.40 10.16 0.370 0.400
B 6.10 6.60 0.240 0.260
C 3.94 4.45 0.155 0.175
D 0.38 0.51 0.015 0.020
F 1.02 1.78 0.040 0.070
G 2.54 BSC 0.100 BSC
H 0.76 1.27 0.030 0.050
J 0.20 0.30 0.008 0.012
K 2.92 3.43 0.115 0.135
L 7.62 BSC 0.300 BSC
M ––– 10 ––– 10
N 0.76 1.01 0.030 0.040
__
SEATING
PLANE
1
4
58
A0.25MCB
SS
0.25MB
M
h
q
C
X 45
_
L
DIM MIN MAX
MILLIMETERS
A 1.35 1.75
A1 0.10 0.25
B 0.35 0.49
C 0.19 0.25
D 4.80 5.00
E
1.27 BSCe
3.80 4.00
H 5.80 6.20
h
0 7
L 0.40 1.25
q
0.25 0.50
__
NOTES:
1. DIMENSIONING AND TOLERANCING PER ASME
Y14.5M, 1994.
2. DIMENSIONS ARE IN MILLIMETER.
3. DIMENSION D AND E DO NOT INCLUDE MOLD
PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE.
5. DIMENSION B DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 TOTAL IN EXCESS
OF THE B DIMENSION AT MAXIMUM MATERIAL
CONDITION.
D
E
H
A
B
e
B
A1
C
A
0.10
OUTLINE DIMENSIONS
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty , representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “T ypical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
Opportunity/Affirmative Action Employer.
Mfax is a trademark of Motorola, Inc.
How to reach us:
USA/EUROPE /Locations Not Listed: Motorola Literature Distribution; JAP AN: Nippon Motorola Ltd.: SPD, Strategic Planning Office, 141,
P.O. Box 5405, Denver, Colorado 80217. 1–303–675–2140 or 1–800–441–2447 4–32–1 Nishi–Gotanda, Shagawa–ku, Tokyo, Japan. 03–5487–8488
Customer Focus Center: 1–800–521–6274
Mfax: RMFAX0@email.sps.mot.com – TOUCHTONE 1–602–244–6609 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park,
Moto rola Fax Back Sys tem – US & Canada ONLY 1–800–774–1848 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298
– http://sps.motorola.com/mfax/
HOME PAGE: http://motorola.com/sps/
MC12028A/D
◊
Loading...