Datasheet > IMI145152PB

IMI145152PB

更新时间： 2024-09-15 23:58:39

品牌	Logo	应用领域
其他 - ETC		光电二极管
页数	文件大小	规格书
12页	200K
描述
Parallel-Input Frequency Synthesizer

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IMI145152PB 数据手册

IMI145152

FREQUENCY SYNTHESIZER

CMOS LSI

February 1996

PARALLEL TUNING PLL FREQUENCY SYNTHESIZER

PRODUCT DESCRIPTION

PRODUCT FEATURES

> 150 Mhz typical input frequency

-163 dBc/Hz total phaswe noise floor

No dead zone, by design

The IMI145152 is a member of a family of phase lock loop

synthesizer Ics from International Microcicruicts. This part is

pin-for-pin compatible with the Motorola MC145152 series of

parts. The IMI145152 is an improved version of this device,

and designing to take advantage of these improvements will

provide a synthesizer with noticeably improved performance.

Unambiguous PLL acquisition

The IMI145152 is programmed with parallel input data lines.

Since it does not require a microcontroller as serial and bus

programming units do, the IMI145152 is an excellent choice

for synthesizers requiring independence from digital

controllers. Such applications particularly include fixed local

oscillator signals, who tuning never changes, and signal

sources, which have few operating frequencies.

Parrallel programming, dual modulus PLL

8 user-selectable reference divider ratios: 8, 64,

128, 256, 512, 1024, 1160, and 2048

Lock detect signal

Blocks in the IMI145152 include a dual modulus feedback

divider for use with an external dual modulus prescaler.

Prescaler ratios can very from 3/4 through 64/65. The

reference divider is set by three select lines to one of eight

ROM encloded values. Both counter inputs are biased for

high sensitivity to sinewave input signals, and the reference

divider input is also configured to operate as an oscillator if

desired. The phase detector is a Type IV phase-frequency

design, which has inherently eliminated the dead zone and

indeed any crossover distortion, as is often noticed on other

PLL devices.

Compatible with dual-modulus prescalers from

÷3/4 to ÷64/65

10-bit N counter, 6-bit A counter

On- or off-chip reference oscillator operation

3-volt and 5-volt characterizations

Performance improvements are in the operating bandwidth

and phase detector noise floor. With its extremely low phase

noise floor and wider input bandwidth, prescaler ratios can

be minimized to allow wide loop bandwidths for faster

settlign and lower phase noise.

BLOCK DIAGRAM

RA2

LOCK

DETECT

ROM REFERENCE DECODER

RA1

RA0

OSCin

12 BIT /R COUNTER

CONTROL LOGIC

PHASE DETECTOR

PHIV

PHIR

OSCout 26

FIN

BIT /A COUNTER

10 BIT /N COUNTER

MODULUS CONTROL

VDD

VSS

11 12 13 14 15 16 17 18 19 20

N0 N1 N2 N3 N4 N5 N6 N7 N8 N9

Note: N0 through N9 have pullup resistors not shown.

INTERNATIONAL MICROCIRCUITS, INC. 525 LOS COCHES ST.

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

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与IMI145152PB相关器件

型号	品牌	获取价格	描述	数据表
IMI145152QB	ETC	获取价格	Parallel-Input Frequency Synthesizer
IMI145152XB	ETC	获取价格	Parallel-Input Frequency Synthesizer
IMI145152XQB	CYPRESS	获取价格	PLL Frequency Synthesizer, CMOS, PQCC28
IMI145152XXB	CYPRESS	获取价格	PLL Frequency Synthesizer, CMOS, PDSO28
IMI145152XYB	CYPRESS	获取价格	PLL Frequency Synthesizer, CMOS, PDSO28
IMI145152YB	ETC	获取价格	Parallel-Input Frequency Synthesizer
IMI145155	ETC	获取价格	CMOS LSI SERIAL INPUT PLL FREQUENCY SYTHESIZER
IMI145155000DG	ETC	获取价格	CMOS LSI SERIAL INPUT PLL FREQUENCY SYTHESIZER
IMI145155000DQ	ETC	获取价格	CMOS LSI SERIAL INPUT PLL FREQUENCY SYTHESIZER
IMI145155018PB	ETC	获取价格	CMOS LSI SERIAL INPUT PLL FREQUENCY SYTHESIZER

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