Motorola MC12075D, MC12075P Datasheet
SEMICONDUCTOR TECHNICAL DATA
Motorola, Inc. 1996
1
5/95
REV 0
The MC12075 is a divide by 64 prescaler. Typical frequency synthesis
applications include elctronically tuned TV/CATV and communication
systems as well as instrumentation.
An internal preamplifier is included which isolates the differential inputs
and provides gain for the input signal. Differential PECL outputs are
provided.
The MC12075 is pin and functionally compatible with the Plessey
SP4633.
• 1.3GHz Toggle Frequency
• Operating Supply Voltage of 4.5 to 5.5V
• Low–Power 36mA Typical at V
CC
= 5.0V
• Operating Temperature Range of 0°C to +85°C
• High Input Sensitivity
• 800mV Minimum Peak–to–Peak Output Swing
• Differential PECL Outputs
DESIGN GUIDE
Criteria Value Unit
Internal Gate Count* 62 ea
Internal Gate Propagation Delay 250 ps
Internal Gate Power Dissipation 10 mW
Speed Power Product 2.5 pJ
* Equivalent to a two–input NAND gate
MAXIMUM RATINGS
Symbol Characteristic Range Unit
V
CC
Power Supply Voltage 7.0 Vdc
T
A
Operating Temperature Range 0 to +85 °C
T
stg
Storage Temperature Range –65 to +175 °C
ELECTRICAL CHARACTERISTICS (V
CC
= 4.5 to 5.5V; TA = 0 to +85°C)
Symbol Characteristic Min Typ* Max Unit
f
max
1
f
min
Toggle Frequency
(Sine Wave Input)
1.3 1.6
70
GHz
MHz
I
CC
Supply Current at 5.5V 36 50 mA
V
out
Output Voltage
(Load =10pF)
0.8 1.2 V
PP
Vin
min
Input Voltage 70MHz
Sensitivity 150–1100MHz
1.2GHz
1.3GHz
10
1.0
1.5
3.0
20
4.0
15
20
mV
rms
Vin
max
Input 70–1300MHz
Overload
400 mV
rms
* Typical measured at +25°C, 5.0V
1. See Figure 1
MECL PLL COMPONENTS
÷64
PRESCALER
Pinout: 8–Lead Plastic (Top View)
8
1
V
CC
NC
72635
4
NC
GND
Output
Input
P SUFFIX
8–LEAD PLASTIC PACKAGE
CASE 626–05
D SUFFIX
8–LEAD PLASTIC SOIC PACKAGE
CASE 751–05
MC12075
MOTOROLA HIPERCOMM
BR1334 — Rev 4
2
6
4
32
÷
64
0.001µF0.001µF
Signal
Input
V
CC
8
Output
GND
PRESCALER BLOCK DIAGRAM
7
625
Ω
625
Ω
Figure 1. Typical MC12075 Input Signal Amplitude versus Input Frequency
15
10
5
0
–5
–10
–15
–20
–25
–30
–35
–40
–45
–50
1257.40
707.11
397.64
223.61
125.74
70.71
39.76
22.36
12.57
7.07
3.98
2.24
1.26
0.71
2000
1600
1200
800
0
2000180016002000
FREQUENCY (MHz)
AMPLITUDE (dBm)
OUTPUT
RMS
MILLIVOL TS
400
400 600 800 1000 1200 1400
INPUT
PP
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