Order this document by MC12022A/D
Consider MC12052A for New Designs
1.1GHz Dual Modulus Prescaler
The MC12022A 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 1.1GHz in programmable frequency
steps.
The MC12022B can be used with CMOS synthesizers requiring negative
edges to trigger internal counters.
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.
MC12022A
MC12022B
MECL PLL COMPONENTS
÷64/65, ÷128/129
DUAL MODULUS PRESCALER
SEMICONDUCTOR
TECHNICAL DATA
•
•
•
•
•
•
1.1 GHz Toggle Frequency
Supply Voltage of 4.5 to 5.5 V
Low–Power 7.5 mA Typical
Operating Temperature Range of –40 to +85°C
Short Setup Time (t
set
) 16ns 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
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
8
1
FUNCTIONAL TABLE
SW
H
H
L
L
MC
H
L
H
L
Divide Ratio
64
65
128
129
P SUFFIX
PLASTIC PACKAGE
CASE 626
8
1
NOTES:
1. SW: H = V
CC
, 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 V
CC
, L = GND to 0.8 V.
Figure 1. Logic Diagram (MC12022A)
PIN CONNECTIONS
IN
D
A
C
QB
C
Q
D
B
QB
Q
D
C
QB
C M
Q
1
2
3
4
8
7
6
5
V
CC
SW
OUT
IN
NC
MC
Gnd
In
In
MC
(Top View)
ORDERING INFORMATION
D
D
C
QB
C
Q
D
QB
E
Q
C
D
F
QB
C
Q
D
QB
G
Q
D
H
C S Q
QB
Device
Out
MC12022AD
MC12022AP
Operating
Temperature Range
Package
SO–8
SW
MC12022BD
MC12022BP
T
A
= – 40° to +85°C
Plastic
SO–8
Plastic
©
Motorola, Inc. 1997
Rev 3
MC12022A MC12022B
MAXIMUM RATINGS
Rating
Power Supply Voltage, Pin 2
Operating Temperature Range
Storage Temperature Range
NOTE;
ESD data available upon request.
Symbol
V
CC
T
A
T
stg
Value
–0.5 to + 7.0
–40 to +85
–65 to +150
Unit
Vdc
°C
°C
ELECTRICAL CHARACTERISTICS
(V
CC
= 4.5 to 5.5 V; T
A
= –40°C 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 (C
L
= 12 pF; R
L
= 2.2 kΩ)
Modulus Setup Time MC to Out
Input Voltage Sensitivity 250–1100 MHz
100–250 MHz
Output Current (C
L
= 12 pF; R
L
= 2.2 kΩ)
Symbol
f
t
I
CC
V
IH1
V
IL1
V
IH2
V
IL2
V
out
t
set
V
in
I
O
Min
0.1
–
2.0
–
V
CC
Open
1.0
–
100
400
–
Typ
1.6
7.5
–
–
V
CC
Open
1.6
11
–
–
1.5
Max
1.1
10
V
CC
0.8
V
CC
Open
–
16
1500
1500
4.0
Unit
GHz
mA
V
V
Vdc
–
V
pp
ns
mVpp
mA
Figure 2. Typical Output Waveforms
500 m
≈
20 ns
500 m
≈
20 ns
(÷64, 500MHz Input Frequency, V
CC
= 5.0V, T
A
= 25°C, Output Loaded)
(÷128, 1.1GHz Input Frequency, V
CC
= 5.0V, T
A
= 25°C, Output Loaded)
2
MOTOROLA RF/IF DEVICE DATA
MC12022A MC12022B
Figure 3. Modulus Setup Time
Prop. Delay
In
Out
MC Setup
MC Release
Modulus setup time MC to out is the MC
setup or MC release plus the prop delay.
MC
Figure 4. AC Test Circuit
V
CC
= 4.5 to 5.5 V
C3
Sine Wave Generator
C1
50Ω
C2
IN
MC
GND
IN
OUT
R
L
C
L
EXTERNAL COMPONETS
C1 = C2 = 1000 pF
C3 = 0.1
µF
C
L
= 12 pF (Including Scope
and jig capacitance)
R
L
= 2.2 kΩ
V
CC
SW
MC Input
MOTOROLA RF/IF DEVICE DATA
3
MC12022A MC12022B
Figure 5. Input Signal Amplitude versus Input Frequency
Divide Ratio = 8; V
CC
= 5.0V; T
A
= 25°C
+15.0
+10.0
+5.0
0
–5.0
AMPLITUDE (dBm)
–10.0
–15.0
–20.0
–25.0
–30.0
–35.0
–40.0
–45.0
–50.0
0
250
500
750
1000
1250
1500
1750
2000
FREQUENCY (MHz)
+1257.40
+707.11
+397.64
+223.61
+125.74
+70.71
mVrms
mVpp
+39.76
+22.36
+12.57
+7.07
+3.98
+2.24
+1.26
+0.71
2250
Figure 6. Output Amplitude versus Input Frequency
2000
1600
1200
800
400
0
250
500
750
1000
1250
1500
1750
2000
0
2250
FREQUENCY (MHz)
4
MOTOROLA RF/IF DEVICE DATA
MC12022A MC12022B
Figure 7. Typical Input Impedance versus Input Frequency
1000
900
800
700
600
R
500
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
5
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