© Semiconductor Components Industries, LLC, 2006
January, 2006 − Rev. 8
1Publication Order Number:
MC12026A/D
MC12026A
1.1 GHz Dual Modulus
Prescaler
Description
The MC12026 is a high frequency, low voltage dual modulus
prescaler used in phase−locked loop (PLL) applications.
The MC12026A can be used with CMOS synthesizers requiring
positive edges to trigger internal counters in a PLL to provide tuning
signals up to 1.1 GHz in programmable frequency steps.
A Divide Ratio Control (SW) permits selection of an 8/9 or 16/17
divide ratio as desired.
The Modulus Control (MC) selects the proper divide number after
SW has been biased to select the desired divide ratio.
Features
•1.1 GHz Toggle Frequency
•Supply Voltage 4.5 to 5.5 V
•Low Power 4.0 mA Typical
•Operating Temperature Range of −40 to 85°C
•The MC12026 is Pin Compatible with the MC12022
•Short Setup Time (tset ) 6.0 ns Typical @ 1.1 GHz
•Modulus Control Input Level is Compatible with Standard CMOS
and TTL
•Pb−Free Packages are Available
Table 1. FUNCTIONAL TABLE
SW MC Divide Ratio
H H 8
H L 9
L H 16
L L 17
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.
Table 2. MAXIMUM RATINGS
Characteristics Symbol Value Unit
Power Supply Voltage, Pin 2 VCC −0.5 to 7.0 Vdc
Operating Temperature Range TA−40 to 85 °C
Storage Temperature Range Tstg −65 to 150 °C
Modulus Control Input, Pin 6 MC −0.5 to 6.5 Vdc
Maximum Output Current, Pin 4 IO10.0 mA
Maximum ratings are those values beyond which device damage can occur.
Maximum ratings applied to the device are individual stress limit values (not
normal operating conditions) and are not valid simultaneously. If these limits are
exceeded, device functional operation is not implied, damage may occur and
reliability may be affected.
NOTE: ESD data available upon request.
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PIN CONNECTIONS
(Top View)
IN
8
IN
VCC
SW
OUT
NC
MC
GND
7
6
5
1
2
3
4
SOIC−8
D SUFFIX
CASE 751
MARKING
DIAGRAM
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G= Pb−Free Package
1
8026A
ALYW
G
1
8
See detailed ordering and shipping information in the package
dimensions section on page 5 of this data sheet.
ORDERING INFORMATION
MC12026A
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2
Table 3. ELECTRICAL CHARACTERISTICS (VCC = 4.5 to 5.5; TA = −40 to 85°C, unless otherwise noted.)
Characteristic Symbol Min Typ Max Unit
Toggle Frequency (Sin Wave) ft0.1 1.4 1.1 GHz
Supply Current Output Unloaded (Pin 2) ICC −4.0 5.3 mA
Modulus Control Input High (MC) VIH1 2.0 −VCC V
Modulus Control Input Low (MC) VIL1 GND −0.8 V
Divide Ratio Control Input High (SW) VIH2 VCC − 0.5 V VCC VCC + 0.5 V V
Divide Ratio Control Input Low (SW) VIL2 OPEN OPEN OPEN −
Output Voltage Swing
(RL = 560 W; IO = 5.5 mA) (Note 3)
(RL = 1.1 kW; IO = 2.9 mA) (Note 4)
Vout 1.0 1.6 −Vpp
Modulus Setup Time MC to Out (Note 5) tSET −6.0 9.0 ns
Input Voltage Sensitivity
100−250 MHz
250−1100 MHz
Vin 400
100
−
−
1000
1000
mVpp
3. Divide Ratio of ÷8/9 at 1.1 GHz, CL = 8.0 pF.
4. Divide Ratio of ÷16/17 at 1.1 GHz, CL = 8.0 pF.
5. Assuming RL = 560 W at 1.1 GHz.
DQ
CQB
DQ
CQB
DQ
CQB
M
In
In
MC
D
C
QB
Q
D
C
QB
Q
Out
Figure 1. Logic Diagram (MC12026A)
1
0
SW
Figure 2. Modulus Setup Time
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
MC12026A
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3
Figure 3. AC Test Circuit
SINE WAVE GENERATOR
50 W
C1
C2
MC INPUT
C3
VCC = 4.5 to 5.5V
CL
RL
VCC SW
IN
IN
MC GND
OUT
EXTERNAL COMPONENTS
C1 = C2 = 1000 pF
C3 = 0.1mF
CL = 8pF (Including Scope and Jig Capacitance)
RL = 560W (for ÷8/9 at 1.1GHz)
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
0 200 400 600 800 1000 1200 1400 1600 1800
Figure 4. Input Signal Amplitude versus Input Frequency
+15.0
+10.0
+5.0
0
−5.0
−10.0
−15.0
−20.0
−25.0
−30.0
−35.0
−40.0
−45.0
−50.0
+1257.40
+0.71
+1.26
+2.24
+3.98
+7.07
+12.57
+22.36
+39.76
+70.71
+125.74
+223.61
+397.64
+707.11
0 200 400 600 800 1000 1200 1400 1600 1800
FREQUENCY (MHz)
AMPLITUDE (dBm)
mVrms
FREQUENCY (MHz)
0
400
800
1200
1600
2000
mVpp
Figure 5. Output Amplitude versus Input Frequency
OPERATING
WINDOW
Divide Ratio = 8; VCC = 5.0 V; TA = 25°C
MC12026A
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4
Figure 6. Typical Output Waveform
880mV
36.6ns 86.6ns
5.88V
(÷8, 1.1 GHz Input Frequency, VCC = 5.0, TA = 25°C, Output Loaded With 8.0pF)
MC12026A
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5
−650
−600
−550
−500
−450
−400
−350
−300
−250
−200
−150
−100
−50
0
50
100
150
200
100 200 300 400 500 600 700 800 900 1000 1100 1200
Figure 7. Typical Input Impedance versus Input Frequency
MHz
OHMS
jX
R
ORDERING INFORMATION
Device Package Shipping†
MC12026AD SOIC−898 Units / Rail
MC12026ADG SOIC−8
(Pb−Free)
98 Units / Rail
MC12026ADR2 SOIC−82500 / Tape & Reel
MC12026ADR2G SOIC−8
(Pb−Free)
2500 / Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
MC12026A
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6
PACKAGE DIMENSIONS
SOIC−8 NB
CASE 751−07
ISSUE AG
SEATING
PLANE
1
4
58
N
J
X 45 _
K
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSION A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
6. 751−01 THRU 751−06 ARE OBSOLETE. NEW
STANDARD IS 751−07.
A
BS
D
H
C
0.10 (0.004)
DIM
A
MIN MAX MIN MAX
INCHES
4.80 5.00 0.189 0.197
MILLIMETERS
B3.80 4.00 0.150 0.157
C1.35 1.75 0.053 0.069
D0.33 0.51 0.013 0.020
G1.27 BSC 0.050 BSC
H0.10 0.25 0.004 0.010
J0.19 0.25 0.007 0.010
K0.40 1.27 0.016 0.050
M0 8 0 8
N0.25 0.50 0.010 0.020
S5.80 6.20 0.228 0.244
−X−
−Y−
G
M
Y
M
0.25 (0.010)
−Z−
Y
M
0.25 (0.010) ZSXS
M
____
1.52
0.060
7.0
0.275
0.6
0.024
1.270
0.050
4.0
0.155
ǒmm
inchesǓ
SCALE 6:1
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
SOLDERING FOOTPRINT*
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2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051
Phone: 81−3−5773−3850
MC12026A/D
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