IMIS1141BYB [CYPRESS]

PLL Frequency Synthesizer, PDSO8, SSOP-8;


型号：	IMIS1141BYB
厂家：	CYPRESS
描述：	PLL Frequency Synthesizer, PDSO8, SSOP-8 光电二极管
文件：	总5页 (文件大小：77K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

IMIS1141

Fixed Frequency Synthesizer For Radio I.F. Designs

Preliminary

PRODUCT DESCRIPTION

PRODUCT FEATURES

The device is a Phase-Lock-Loop frequency synthesizer

that requires an external VCO and Loop Filter, which is

120MHz band frequency synthesizer.

Divide L: fosc= 14.40 MHz, fIF= 111.75 MHz,

fr= 150khz.

specifically designed for

Radio

Intermediate

Frequency (I.F.). The input frequency (Fin) consists of a

Prescaler with a fixed divider network. The Oscillator

input is basically referred to as a referance input and

it’s associated fixed divider network; both divider

networks have two selectable ratio’s that provide a

wideband to narrowband signal capture range. The

fixed divider ratio’s provided are selectable via a

low/high logic level; no external microcontoller is

required. A divide by eight (8) counter output is

provided for the user if an additional synchronous clock

frequency is needed which is relative to the Oscillator

input (Osc in).

Divide H: fosc= 14.40 MHz, fIF= 111.75 MHz,

fr= 50KHz

Variable power supply range = 2.7v to 3.6v

Ref. Oscillator frequency divide by eight has low

output drive level to help minimize EMI.Output drive

capability: 700mv pk-pk. (1.8MHz and 20K ohm/4pf

capacitance loading.

Operating temperature range: Ta= -40 to +85

deg. C.

Package Style: Plastic SSOP 8-Pin.

CIRCUIT BLOCK DIAGRAM

DIV 8

VDD

12/36

Ref Divider

OSCin

DIV

Phase

Detector

Charge

Pump

149/447

VCO Divider

VSS

Fin

INTERNATIONAL MICROCIRCUITS, INC. 525 LOS COCHES ST.

MILPITAS, CA 95035 TEL: 408-263-6300 FAX 408-263-6571

Rev. 1.3

6/11/98

Page 1 of 5

IMIS1141

Fixed Frequency Synthesizer For Radio I.F. Designs

Preliminary

MAXIMUM RATINGS

Supply voltage (VDD)

-.5V to 3.6V

This device contains circuitry to protect the inputs

against damage due to high static voltages or electric

field; however, precaution should be taken to avoid

application of any voltage higher than the maximum

rated voltages to this circuit. For proper operation, Vin

and Vout should be constrained to the range:

VSS < (Vin or Vout) < VDD

Input voltage (Vin)

Output voltage (Vcp)

Supply current (IDD)

Storage Temperature:

-0.5 V to VDD+0.5V

-0.5V to VDD+0.5V

5.0ma

-55ºC to 125ºC

Unused inputs must always be tied to an appropriate

logic voltage level (either VSS or VDD).

Recommended Operating Conditions:

Supply voltage range(VDD) 2.7V to 3.6V; 5.0V max

Input voltage

(Vin) VSS (min) to VDD (max)

Operating temperature range

-40°C to 85°C

I.C. PIN DESCRIPTIONS

DESCRIPTION

PIN # NAME

VDD

Power supply input voltage

Charge pump output

VSS

Fin

Power Supply DC return (Gnd.).

Input frequency to Prescaler fixed divider network; divide “N” counter.

Div

Selectable switched Divider ratio’s (H/L) are controlled by logic levels: logic level “1” = 50khz

(NB), and a logic level “0” = 150KHz (WB).NOTE: has internal pull-down resistor.

Lock Detector - a high logic output “1” means the loop is locked; a low logic output “0” means

the loop is unlocked.

Div 8

Divide by eight (8) output. This output divide ratio is linked with the Osc. Input and therefore

provides a divide by eight synchronous output of the frequency reference input.

OSC in

Reference frequency counter input; divide “R” counter.

Main Counter Function with Fixed Divide Ratio’s

Symbol

Description

VCO output frequency

Div = H (“1”)

*Div = L (“0”)

111.75 MHz

14.40 MHz

745

fin

OSC in

111.75 MHz

14.40 MHz

2235

Reference frequency

Divide ratio of the fin counter

Divide ratio of the ref. counter

288 (50KHz)

96 (150KHz)

*Internal pull-down resistor; min. 100k ohm to VSS.

INTERNATIONAL MICROCIRCUITS, INC. 525 LOS COCHES ST.

MILPITAS, CA 95035 TEL: 408-263-6300 FAX 408-263-6571

Rev. 1.3

6/11/98

Page 2 of 5

IMIS1141

Fixed Frequency Synthesizer For Radio I.F. Designs

Preliminary

PLL OPERATING CHARACTERISTICS

VDD = 3.6V

-40ºC

Min

25ºC

Min

100

85ºC

Min

Characteristics

Symbol

fin,

Max

Typ

Max

120

Max

Unit

MHz

Conditions

RF Frequency

Sine

111.75

14.40

-3

Osc Frequency

fosc

MHz

dBm

RF Input Sensitivity

Osc input Sensitivity

fin

-10

Dynamic

Fosc

PDNF

500

mVp-p

dBc/Hz

Synthesizer Phase

Detector Noise Floor

-153

1.0

Charge Pump Current

Icp

0.9

1.10

5.0

PD output

Fin=111.75 Mhz

fosc=14.40 MHz

IDD

Supply current

Cin

Cout

VIL

1.1

Capacitances

Input

1.1

0.9

Vdc

Voltages

Output

VIH

2.5

VOL

VOH

IOL

0.0

Vdc

IOL=0ma

IOH=0ma

VOL =0.4

Static

Voltages

2.6

TBD

2.6

TBD

2.6

TBD

Logic

µA

OSCout

VOL =0.4

Output

VOH =2.6

fosc=fin=0 Hz

Current

IOH

ISB

Logic

OSCout

Standby Current

1.1

INTERNATIONAL MICROCIRCUITS, INC. 525 LOS COCHES ST.

MILPITAS, CA 95035 TEL: 408-263-6300 FAX 408-263-6571

Rev. 1.3

6/11/98

Page 3 of 5

IMIS1141

Fixed Frequency Synthesizer For Radio I.F. Designs

Preliminary

TYPICAL APPLICATION CIRCUIT

111.75 MHz

VDD

Fin

14.4 MHz

PLL

To mixer

I.C.

VCO

OSC in

VSS

Figure 2. Example

CONNECTION DIAGRAM

VDD

OSCin

DIV 8

VSS

FIN

DIV

INTERNATIONAL MICROCIRCUITS, INC. 525 LOS COCHES ST.

MILPITAS, CA 95035 TEL: 408-263-6300 FAX 408-263-6571

Rev. 1.3

6/11/98

Page 4 of 5

IMIS1141

Fixed Frequency Synthesizer For Radio I.F. Designs

Preliminary

PACKAGE DRAWING AND DIMENSIONS

8-PIN SSOP OUTLINE DIMENSIONS

INCHES

NOM

MILLIMETERS

SYMBOL MIN

MAX

MIN

NOM

MAX

0.066

0.010

0.002

0.113

0.205

0.068

0.012

0.07

1.68

0.25

0.13

2.87

5.2

1.73

0.30

0.15

3.00

5.3

1.78

0.38

0.22

3.13

5.38

0.015

0.008

0.123

0.212

0.005

0.118

0.209

0.0256 BSC

0.307

1.27 BSC

7.8

0.301

0°

0.311

8°

7.65

0°

7.9

8°

4°

0.211

0.030

0.037

0.55

0.75

0.95

SSOP PACKAGE

ORDERING INFORMATION

Part Number

Package Type

Production Flow

IMIS1141BYB

8 PIN SSOP

INDUSTRIAL -40ºC TO + 85º C

Note: The ordering part number is formed by a combination of device number, device revision, package style, and

screening as shown below.

Marking:

Example:

IMI

S1141BYB

Date code

Lot #

IMIS1141BYB

Flow

B = Industrial, -40ºC to 85ºC

Package

Y = SSOP

Revision

IMI Device Number

INTERNATIONAL MICROCIRCUITS, INC. 525 LOS COCHES ST.

MILPITAS, CA 95035 TEL: 408-263-6300 FAX 408-263-6571

Rev. 1.3

6/11/98

Page 5 of 5

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