Datasheet MC12038BP, MC12038AD, MC12038AP, MC12038BD Datasheet (Motorola)

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Order this document by MC12038A/D

SEMICONDUCTOR

TECHNICAL DATA

MECL PLL COMPONENTS

÷127/128, ÷255/256

DUAL MODULUS PRESCALER

P SUFFIX

PLASTIC PACKAGE

CASE 626

PIN CONNECTIONS

D SUFFIX

PLASTIC PACKAGE

CASE 751

(SO–8)

8

1

1

8

IN

(Top View)

8

IN

V

CC

SW

OUT

NC
MC

Gnd

7
6
5

1
2
3
4

Device

Operating

Temperature Range

Package

ORDERING INFORMATION

MC12038AD
MC12038AP

TA = – 40° to +85°C

SO–8

Plastic

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 

The MC12038A 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.

A Divide Ratio Control (SW) permits selection of a 127/128 or 255/256
divide ratio as desired.

The Modulus Control (MC) selects the proper divide number after SW has
been biased to select the desired divide ratio.

• 1.1 GHz Toggle Frequency

• Supply Voltage of 4.5 to 5.5 V

• Low–Power 4.8 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

• On–Chip Output Termination

FUNCTIONAL TABLE

SW MC Divide Ratio

H H 127
H L 128
L H 255
L L 256

NOTES: 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.

DESIGN GUIDE

Criteria Value Unit

Internal Gate Count* 67 ea
Internal Gate Propagation Delay 200 ps
Internal Gate Power Dissipation 0.75 mW
Speed Power Product 0.15 pJ

NOTE: * Equivalent to a two–input NAND gate

MAXIMUM RATINGS

Characteristic Symbol Range Unit

Power Supply Voltage, Pin 2 V

CC

–0.5 to 7.0 Vdc

Operating Temperature Range T

A

–40 to 85 °C

Storage Temperature Range T

stg

–65 to 150 °C

Modulus Control Input, Pin 6 MC –0.5 to 6.5 Vdc

NOTE: ESD data available upon request.

 Motorola, Inc. 1997 Rev 2

MC12038A

2

MOTOROLA RF/IF DEVICE DATA

ELECTRICAL CHARACTERISTICS

(VCC = 4.5 to 5.5V; TA = –40 to 85°C, unless otherwise noted.)

Characteristic

Symbol Min Typ Max Unit

Toggle Frequency (Sine Wave Input) f

t

0.1 1.4 1.1 GHz

Supply Current Output Unloaded (Pin 2) at 5.0 Vdc I

CC

– 4.8 6.5 mA

Modulus Control Input High (MC) V

IH1

2.0 – V

CC

V

Modulus Control Input Low (MC) V

IL1

– – 0.8 V

Divide Ratio Control Input High (SW) V

IH2

V

CC

V

CC

V

CC

Vdc

Divide Ratio Control Input Low (SW) V

IL2

Open Open Open –

Output Voltage Swing (CL = 8.0 pF) V

out

1.0 1.6 – V

pp

Modulus Setup Time MC to Out t

set

– 11 16 ns

Input Voltage Sensitivity 250–1100 MHz

100–250 MHz

V

in(min)

100
400

–
–

1500
1500

mVpp

A

HGFED

In

MC

In

SW

Out

Q

S

Q

C

QBD

QC

QBD

QBC

QD

C

QBD

QBC

QD

QBC

QD

B

QBC

QD

C

QB

C

QD

M

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

Figure 1. Logic Diagram (MC12038A) Figure 2. Modulus Setup Time

Figure 3. Typical Output Waveforms

(÷128, 1.1 GHz Input Frequency, VCC = 5.0 V, TA = 25°C, Output Loaded)

500 m

20 ns

≈

MC12038A

3

MOTOROLA RF/IF DEVICE DATA

Figure 4. AC Test Circuit

EXTERNAL COMPONENTS
C1 = C2 = 1000 pF
C3 = 0.1

µ

F
CL = 8.0 pF (Including Scope
and jig capacitance)

C

L

MC Input

C2

C1

C3

VCC = 4.5 to 5.5 Vdc

50

Ω

Sine Wave Generator

SWV

CC

OUT

GND

MC

IN

IN

0 250 500 750 1000 1250 1500

Figure 5. 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

+1250

+0.71

+1.25

+2.25

+4.0

+7.1

+12.8

+22.5

+40.0

+71.0

+125

+225

+400

+710

0

FREQUENCY (MHz)

AMPLITUDE (dBm)

mVrms

FREQUENCY (MHz)

0

1000

2000

3000

4000

5000

mVpp

Figure 6. Output Amplitude versus Input Frequency

250 500 750 1000 1250 1500

Divide Ratio = 128; VCC = 5.0 V; TA = 25°C

MC12038A

4

MOTOROLA RF/IF DEVICE DATA

–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

MC12038A

5

MOTOROLA RF/IF DEVICE DATA

P SUFFIX

PLASTIC PACKAGE

CASE 626–05

ISSUE K

D SUFFIX

PLASTIC PACKAGE

CASE 751–06

(SO–8)

ISSUE T

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.

14

58

F

NOTE 2

–A–

–B–

–T–

SEATING
PLANE

H

J

G

D

K

N

C

L

M

M

A

M

0.13 (0.005) B

M

T

DIM MIN MAX MIN MAX

INCHESMILLIMETERS

A 9.40 10.16 0.370 0.400
B 6.10 6.60 0.240 0.260
C 3.94 4.45 0.155 0.175
D 0.38 0.51 0.015 0.020
F 1.02 1.78 0.040 0.070
G 2.54 BSC 0.100 BSC
H 0.76 1.27 0.030 0.050
J 0.20 0.30 0.008 0.012
K 2.92 3.43 0.115 0.135
L 7.62 BSC 0.300 BSC
M ––– 10 ––– 10
N 0.76 1.01 0.030 0.040

__

SEATING
PLANE

1

4

58

A0.25MCB

SS

0.25MB

M

h

q

C

X 45

_

L

DIM MIN MAX

MILLIMETERS

A 1.35 1.75

A1 0.10 0.25

B 0.35 0.49
C 0.19 0.25
D 4.80 5.00
E

1.27 BSCe

3.80 4.00

H 5.80 6.20
h

0 7

L 0.40 1.25

q

0.25 0.50

__

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.

D

E

H

A

B

e

B

A1

C

A

0.10

OUTLINE DIMENSIONS

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specifically disclaims any and all liability, including without limitation consequential or incidental damages. “T ypical” parameters which may be provided in Motorola
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MC12038A/D

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