MC12028AP 반도체 회로 부품 판매점
MECL PLL COMPONENTS 64/65 / 128/129 DUAL MODULUS PRESCALER
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 Motorola Semiconductors |
Order this document by MC12028A/D
1.1 GHz Dual
Modulus Prescaler
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, VCC = 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
HH
32
HL
33
LH
64
LL
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*
Internal Gate Propagation Delay
67 ea
200 ps
Internal Gate Power Dissipation
Speed Power Product
NOTE: * Equivalent to a two–input NAND gate
0.75
0.15
mW
pJ
MAXIMUM RATINGS
Characteristic
Power Supply Voltage, Pin 2
Operating Temperature Range
Storage Temperature Range
Modulus Control Input, Pin 6
NOTE: ESD data available upon request.
Symbol
VCC
TA
Tstg
MC
Range
–0.5 to 7.0
–40 to 85
–65 to 150
–0.5 to 6.5
Unit
Vdc
°C
°C
Vdc
MC12028A
MC12028B
MECL PLL COMPONENTS
÷64/65, ÷128/129
DUAL MODULUS PRESCALER
SEMICONDUCTOR
TECHNICAL DATA
8
1
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
8
1
P SUFFIX
PLASTIC PACKAGE
CASE 626
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
MC12028AD
SO–8
MC12028AP
MC12028BD TA =–40° to +85°C
Plastic
SO–8
MC120228BP
Plastic
© Motorola, Inc. 1997
Rev 3
MC12028A MC12028B
ELECTRICAL CHARACTERISTICS (VCC = 4.5 to 5.5V; TA = –40 to 85°C, unless otherwise noted.)
Characteristic
Symbol
Min
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
ft
ICC
VIH1
VIL1
VIH2
VIL2
Vout
tset
Vin
0.1
–
2.0
–
VCC
Open
1.0
–
100
400
Output Current (CL = 12 pF; RL = 2.2 kΩ)
IO –
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
mA
V
V
Vdc
—
Vpp
ns
mVpp
mA
Figure 1. Logic Diagram (MC12028A)
Figure 2. Modulus Setup Time
In
In
MC
DQ
D
C QB
DQ
A
C QB
DQ
B
C QB
DQ
C
QB
CM
Prop. Delay
In
Out
D QB
E
CQ
DQ
F
C QB
D QB
G
CQ
D QB
H
C
Q
S
SW
Out
MC Setup
MC
MC Release
Modulus setup time MC to out is the MC
setup or MC release plus the prop delay.
Figure 3. Typical Output Waveform
500 m ≈
20 ns
2 MOTOROLA RF/IF DEVICE DATA
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관련 데이터시트
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MECL PLL COMPONENTS 64/65 / 128/129 DUAL MODULUS PRESCALER - Motorola Semiconductors
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MECL PLL COMPONENTS 64/65 / 128/129 DUAL MODULUS PRESCALER - Motorola Semiconductors
MC12028AP
MECL PLL COMPONENTS 64/65 / 128/129 DUAL MODULUS PRESCALER - Motorola Semiconductors