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ACE9020NP1S

Receiver and Transmitter Interface

Zarlink Semiconductor Inc 

ACE9020

Receiver and Transmitter Interface

ACE9020 is a VHF oscillator, up-converter and prescaler.

It is used in an offset modulated transmit architecture where a

UHF synthesiser makes the channel selection and a second

synthesiser generates a fixed transmit offset.

A VCO signal drives a buffer in ACE9020 to feed an on-

chip prescaler and transmit up-converter. The prescaler is a

dual two-modulus divider and drives the main synthesiser

input of the ACE9030. The SSB up-converter suppresses the

unwanted transmit sideband.

The VHF oscillator is buffered to drive the auxiliary

synthesiser input of the ACE9030 and is locked to the offset

frequency. This frequency is modulated by varying the

resonant frequency of the external tank circuit. Both this

oscillator and the UHF VCO drive the up-converting mixer to

generate the transmit signal.

Various power saving modes for battery economy are

included. These allow the transmit sections to be shut down

during stand-by and the whole chip can be shut down during

sleep mode. The circuit techniques used have been chosen to

minimise external components and at the same time give very

high performance.

Features

• Low Power Low Voltage (3.6 to 5.0 V) Operation

• Power Down Modes

• Differential Signals to Minimise Cross-talk

• Auxiliary Oscillator with Transmit Up-converter

• Prescaler for Main Synthesiser

• Part of the ACE Integrated Cellular Phone Chipset

• Small Outline 28 pin Package

Applications

• AMPS and TACS Cellular Telephone

• Two-Way Radio Systems

Related Products

ACE9020 is part of the following chipset:

• ACE9030 Radio Interface and Twin Synthesiser

• ACE9040 Audio Processor

• ACE9050 System Controller and Data Modem

ABSOLUTE MAXIMUM RATINGS

Supply voltage

Storage temperature

Operating temperature

Voltage at any pin

Static Sensitivity (HBM) min

6V

- 65°C to + 150°C

- 30°C to + 85°C

-0.3V to VCC +0.3V

500V

Ordering Information

May 2006

ACE9020B/KG/NP1S 28 Pin SSOP Tubes

ACE9020B/KG/NP1T 28 Pin SSOP Tape & Reel

ACE9020B/KG/NP2P 28 Pin SSOP* Tubes, Bake & Drypack

ACE9020B/KG/NP2Q 28 Pin SSOP* Tape & Reel,

Bake & Drypack

*Pb Free Matte Tin

PD1 1

PD2

GND

BIAS_REF

VCC_TX

TXPA+

TXPA-

RSET_TXPA

GND_TXOSC

TANK+

TANK-

VCC_DIV

GND_OSC

MOD_CNTRL 14

28 VCC

n.c.

n.c.

VCC_RX

n.c.

RXVCOIN

GND_RX

VCC_TXOSC

TXOSC-

TXOSC+

GND_DIV

RATIO_SEL

DIV_OUT-

15 DIV_OUT+

Note: Pin 1 is identified by moulded spot

and by coding orientation.

NP28

Figure 1 - Pin connections - top view

RSET_TXPA

TANK+

TANK-

BIAS_REF

PD1

PD2

VHF

OSC

BIAS &

POWER

DOWN

CONTROL

RXVCOIN

RATIO_SEL

MOD_CNTRL

DIVIDE BY

64/65 OR 128/129

TXOSC+

TXOSC-

TXPA+

TXPA-

DIV_OUT+

DIV_OUT-

Figure 2 - ACE9020 simplified block digram

1

Zarlink Semiconductor Inc.

Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc.

Copyright 1997-2006, Zarlink Semiconductor Inc. All Rights Reserved.

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