MC12038AP [MOTOROLA]

MECL PLL COMPONENTS ±127/128, ±255/256 DUAL MODULUS PRESCALER; MECL PLL元件± 128分之127 ，±二百五十六分之二百五十五双模预分频器


型号：	MC12038AP
厂家：	MOTOROLA
描述：	MECL PLL COMPONENTS ±127/128, ±255/256 DUAL MODULUS PRESCALER MECL PLL元件± 128分之127 ，±二百五十六分之二百五十五双模预分频器预分频器
文件：	总5页 (文件大小：87K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Order this document by MC12038A/D

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.

MECL PLL COMPONENTS

÷127/128, ÷255/256

DUAL MODULUS PRESCALER

The Modulus Control (MC) selects the proper divide number after SW has

been biased to select the desired divide ratio.

SEMICONDUCTOR

TECHNICAL DATA

• 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 ) 16ns Maximum @ 1.1 GHz

set

• Modulus Control Input Level Is Compatible With Standard

D SUFFIX

PLASTIC PACKAGE

CASE 751

CMOS and TTL

• On–Chip Output Termination

(SO–8)

FUNCTIONAL TABLE

Divide Ratio

127

128

255

256

NOTES: 1. SW: H = V , L = Open. A logic L can also be applied by grounding this pin,

but this is not recommended due to increased power consumption.

P SUFFIX

PLASTIC PACKAGE

CASE 626

2. MC: H = 2.0 V to V , L = GND to 0.8 V.

DESIGN GUIDE

Criteria

Internal Gate Count*

Value

Unit

Internal Gate Propagation Delay

Internal Gate Power Dissipation

200

PIN CONNECTIONS

0.75

0.15

Speed Power Product

NOTE: * Equivalent to a two–input NAND gate

MAXIMUM RATINGS

Gnd

OUT

Characteristic

Symbol

Range

Unit

Vdc

°C

(Top View)

Power Supply Voltage, Pin 2

Operating Temperature Range

Storage Temperature Range

Modulus Control Input, Pin 6

NOTE: ESD data available upon request.

–0.5 to 7.0

–40 to 85

–65 to 150

–0.5 to 6.5

stg

°C

Vdc

ORDERING INFORMATION

Operating

Temperature Range

Device

Package

MC12038AD

MC12038AP

SO–8

= – 40° to +85°C

Plastic

Motorola, Inc. 1997

Rev 2

MC12038A

ELECTRICAL CHARACTERISTICS (V

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

Characteristic

Toggle Frequency (Sine Wave Input)

Symbol

Min

0.1

–

Typ

1.4

4.8

–

Max

1.1

Unit

GHz

Supply Current Output Unloaded (Pin 2) at 5.0 Vdc

Modulus Control Input High (MC)

6.5

IH1

2.0

–

Modulus Control Input Low (MC)

IL1

–

0.8

Divide Ratio Control Input High (SW)

Divide Ratio Control Input Low (SW)

Vdc

–

IH2

Open

IL2

Output Voltage Swing (C = 8.0 pF)

1.0

–

1.6

–

out

mVpp

Modulus Setup Time MC to Out

set

Input Voltage Sensitivity 250–1100 MHz

100–250 MHz

100

400

–

1500

in(min)

Figure 1. Logic Diagram (MC12038A)

Figure 2. Modulus Setup Time

Prop. Delay

Out

MC Setup

MC Release

Out

Modulus setup time MC to out is the MC

setup or MC release plus the prop delay.

Figure 3. Typical Output Waveforms

≈

500 m

20 ns

(÷128, 1.1 GHz Input Frequency, V

= 5.0 V, T = 25°C, Output Loaded)

CC A

MOTOROLA RF/IF DEVICE DATA

MC12038A

Figure 4. AC Test Circuit

= 4.5 to 5.5 Vdc

Sine Wave Generator

Ω

OUT

GND

EXTERNAL COMPONENTS

C1 = C2 = 1000 pF

C3 = 0.1 µF

= 8.0 pF (Including Scope

and jig capacitance)

MC Input

Figure 5. Input Signal Amplitude versus Input Frequency

+15.0

+1250

+710

+400

+225

+125

+71.0

+40.0

+22.5

+12.8

+7.1

+10.0

+5.0

–5.0

–10.0

–15.0

–20.0

–25.0

–30.0

–35.0

–40.0

–45.0

–50.0

+4.0

+2.25

+1.25

+0.71

250

500

750

1000

1250

1500

FREQUENCY (MHz)

Divide Ratio = 128; V

= 5.0 V; T = 25°C

Figure 6. Output Amplitude versus Input Frequency

5000

4000

3000

2000

1000

250

500

750

1000

1250

1500

FREQUENCY (MHz)

MOTOROLA RF/IF DEVICE DATA

MC12038A

Figure 7. Typical Input Impedance versus Input Frequency

200

150

100

MHz

–50

–100

–150

–200

–250

–300

–350

–400

–450

–500

–550

–600

–650

100

200

300

400

500

600

700

800

900 1000 1100 1200

MOTOROLA RF/IF DEVICE DATA

MC12038A

OUTLINE DIMENSIONS

P SUFFIX

PLASTIC PACKAGE

CASE 626–05

ISSUE K

–B–

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.

–A–

NOTE 2

MILLIMETERS

INCHES

DIM

MIN

9.40

6.10

3.94

0.38

1.02

MAX

10.16

6.60

4.45

0.51

1.78

MIN

MAX

0.400

0.260

0.175

0.020

0.070

0.370

0.240

0.155

0.015

0.040

2.54 BSC

0.100 BSC

0.76

0.20

2.92

1.27

0.30

3.43

0.030

0.008

0.115

0.050

0.012

0.135

–T–

SEATING

PLANE

7.62 BSC

0.300 BSC

–––

0.76

1.01

0.030

0.040

0.13 (0.005)

D SUFFIX

PLASTIC PACKAGE

CASE 751–06

(SO–8)

NOTES:

ISSUE T

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.

0.25

MILLIMETERS

h X 45

DIM

MIN

1.35

0.10

0.35

0.19

4.80

3.80

MAX

1.75

0.25

0.49

0.25

5.00

4.00

SEATING

PLANE

1.27 BSC

5.80

0.25

0.40

6.20

0.50

1.25

0.10

0.25

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the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and

specificallydisclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola

datasheetsand/orspecificationscananddovaryindifferentapplicationsandactualperformancemayvaryovertime. Alloperatingparameters,including“Typicals”

must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of

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applicationsintended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury

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arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that

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Opportunity/Affirmative Action Employer.

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MC12038A/D

◊

MOTOROLA RF/IF DEVICE DATA

MC12038AP [MOTOROLA]

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