(VCC = 4.5 to 5.5V; TA = –40 to 85°C, unless otherwise noted.)
Characteristic
Toggle Frequency (Sine Wave Input)
Supply Current Output Unloaded (Pin 2)
Modulus Control Input High (MC)
Modulus Control Input Low (MC)
Divide Ratio Control Input High (SW)
Divide Ratio Control Input Low (SW)
Output Voltage Swing (CL = 12 pF; RL = 2.2 kΩ)
Modulus Setup Time MC to Out
Input Voltage Sensitivity 250–1100 MHz
100–250 MHz
Output Current (CL = 12 pF; RL = 2.2 kΩ)
Symbol
ft
ICC
VIH1
VIL1
VIH2
VIL2
Vout
tset
Vin
IO
Min
0.1
–
2.0
–
VCC
Open
1.0
–
100
400
–
Typ
1.4
4.0
–
–
VCC
Open
1.6
11
–
–
1.5
Max
1.1
6.5
VCC
0.8
VCC
Open
–
16
1500
1500
4.0
Unit
GHz
V
V
Vdc
–
Vpp
ns
mVpp
mA
LIFETIME BUY
Figure 1. Logic Diagram (MC12028A)
Figure 2. Modulus Setup Time
D
A
C
Q
D
B
Q
D
C
Q
QB
Prop. Delay
In
QB
C
QB
C M
In
In
Out
MC
MC Setup
D
D
C
QB
C
Q
D
E
Q
C
QB
D
F
QB
C
Q
D
QB
G
Q
D
H
C S Q
QB
MC
Out
MC Release
Modulus setup time MC to out is the MC
setup or MC release plus the prop delay.
SW
Figure 3. Typical Output Waveform
500 m≈
20 ns
2
MOTOROLA RF/IF DEVICE DATA
LAST ORDER 19/12/99
LAST SHIP 18/06/00
mA
MC12028A MC12028B
Figure 4. AC Test Circuit
C3
Sine Wave Generator
C1
50
Ω
C2
In
MC
Gnd
In
Out
RL
CL
External Components:
C1 = C2 = 1000 pF
C3 = 0.1
µF
CL = 12 pF (Including Scope and jig capacitance)
RL = 2.2 kΩ
VCC = 4.5 to 5.5 V
VCC
SW
MC Input
LIFETIME BUY
Figure 5. Typical Input Impedance versus Input Frequency
1000
900
800
700
600
R
400
300
200
100
Ohms
0
0.1
–100
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
GHz
–200
jX
–300
–400
–500
–600
MOTOROLA RF/IF DEVICE DATA
3
LAST ORDER 19/12/99
500
LAST SHIP 18/06/00
MC12028A MC12028B
Figure 6. Input Signal Amplitude versus Input Frequency
15
10
5.0
0
Amplitude (dBm)
– 5.0
–10
–15
– 20
– 25
– 30
– 35
– 40
– 45
1250
710
400
225
125
71
40
22.5
12.8
7.1
4.0
2.25
1.25
0.71
mVrms
LIFETIME BUY
– 50
2000
1600
1200
800
400
0
0
200
400
600
800
1000
1200
1400
1600
FREQUENCY (MHz)
Divide Ratio = 32
4
MOTOROLA RF/IF DEVICE DATA
LAST ORDER 19/12/99
LAST SHIP 18/06/00
mVpp
MC12028A MC12028B
OUTLINE DIMENSIONS
D SUFFIX
PLASTIC PACKAGE
CASE 751–06
(SO–8)
ISSUE T
C
5
A
8
D
E
1
4
H
0.25
M
B
M
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.
DIM
A
A1
B
C
D
E
e
H
h
L
MILLIMETERS
MIN
MAX
1.35
1.75
0.10
0.25
0.35
0.49
0.19
0.25
4.80
5.00
3.80
4.00
1.27 BSC
5.80
6.20
0.25
0.50
0.40
1.25
0
_
7
_
h
B
C
e
A
SEATING
PLANE
X 45
_
q
LIFETIME BUY
L
0.10
A1
B
0.25
M
C B
S
A
S
q
8
5
–B–
1
4
P SUFFIX
PLASTIC PACKAGE
CASE 626–05
ISSUE K
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.
F
NOTE 2
L
C
–T–
SEATING
PLANE
J
N
D
K
M
M
H
G
0.13 (0.005)
T A
M
DIM
A
B
C
D
F
G
H
J
K
L
M
N
B
M
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data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
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