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MB1503

LOW-POWER PLL FREQUENCY SYNTHESIZER WITH POWER SAVE FUNCTION (1.1GHz)

Fujitsu 

Sept. 1995

Edition 1.0a

DATA SHEET

MB1503

LOW-POWER PLL FREQUENCY SYNTHESIZER WITH

POWER SAVE FUNCTION (1.1GHz)

The Fujitsu MB1503 is a serial input phase-locked loop (PLL) frequency synthesizer with a

pulse-swallow function. A stand-by mode is provided to limit power consumption during

intermittent operation.

The MB1503 is configured of a 1.1GHz dual-modulus prescaler with 128/129 divide ratio,

control signal generator, 16-bit shift register, 15-bit latch, programmable reference divider

(binary 14-bit programmable reference counter), 1-bit switch counter, phase comparator

with phase conversion function, charge pump, crystal oscillator, 19-bit shift register, 18-bit

latch, programmable divider (binary 7-bit swallow counter and binary 11-bit programmable

counter), analog switches, and an intermittent operation control circuit that selects the

operating or stand-by mode depending on the power-save control input state (PS).

The MB1503 operates from a single +5 V supply. Fujitsu’s advanced technology achieves

an Icc of 8mA, typical. The stand-by mode current consumption is just 100µA.

Features

• High operating frequency

• Pulse-swallow function

: fIN = 1.1GHz (PIN = –10dBm)

: High-speed dual-modulus prescaler with 128/129

divide ratio

• Low supply current

: ICC = 8mA typ. at 5V

• Power-saving stand-by mode : 100µA

• Serial input, 18-bit programmable divider consisting of:

– Binary 7-bit swallow counter

: 0 to 127

– Binary 11-bit programmable counter : 16 to 2,047

• Serial input 15-bit programmable reference divider consisting of:

– Binary 15-bit programmable reference counter: 8 to 16,383

– 1-bit switch counter sets prescaler divide ratio

• On-chip analog switch for fast lock-up

• On-chip charge pump

• Wide operating temperature range: –40 to +85°C

• Plastic 16–pin dual inline package (Suffix : –P)

Plastic 16–pin small outline package (Suffix : –PF)

ABSOLUTE MAXIMUM RATINGS (See NOTE)

PLASTIC PACKAGE

(FPT-16P-M06)

Ratings

Symbol

Value

Unit

Supply Voltage

VCC

–0.5 to +7.0

V

VP

VCC ≤ VP ≤ 10.0

V

Output Voltage

VOUT

–0.5 to VCC +0.5

V

Output Current

IOUT

±10

mA

Storage Temperature

Tstg

–55 to +125

°C

NOTE:

Permanent device damage may occur if the above Absolute Maximum

Ratings are exceeded. Functional operation should be restricted to the

conditions as detailed in the operational sections of this data sheet. Exposure

to absolute maximum rating conditions for extended periods may affect device

reliability.

PLASTIC PACKAGE

(DIP-16P-M04)

This device contains circuitry to protect the inputs

against damage due to high static voltages or electric

fields. However, it is advised that normal precautions be

taken to avoid application of any voltage higher than

maximum rated voltages to this high impedance circuit.

Copyright© 1994 by FUJITSULIMITED

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