MITEL ACE9020NP1S, ACE9020KG, ACE9020B Datasheet

PD1

PD2

GND

BIAS_REF

VCC_TX

TXPA+

TXPA-

RSET_TXPA

GND_TXOSC

TANK+

TANK-

VCC_DIV

GND_OSC

MOD_CNTRL

DIV_OUT+

DIV_OUT-

RATIO_SEL

GND_DIV

TXOSC+

TXOSC-

VCC_TXOSC

GND_RX

RXVCOIN

n.c.

VCC_RX

n.c.

VCC

128

Note: Pin 1 is identified by moulded spot and by coding orientation.

NP28

ACE9020

Receiver and Transmitter Interface

Supersedes February 1997 edition, DS4287 - 4.1 DS4287 - 5.0 December 1997

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 onchip 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

ORDERING INFORMATION

SSOP 28 lead package, code NP28

ACE9020B/KG/NP1S - anti-static sticks ACE9020B/KG/NP1T - tape mounted

RSET_TXPA

Fig.1 Pin connections - top view

TXOSC+

TXOSC-

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 6V Storage temperature - 65°Cto+150°C Operating temperature - 30°Cto+85°C

Voltage at any pin -0.3V to V Static Sensitivity (HBM) min 500V

+0.3V

TANK+

TANK-

BIAS_REF

PD1 PD2

RXVCOIN

RATIO_SEL

MOD_CNTRL

VHF OSC

BIAS & POWER DOWN CONTROL

DIVIDE BY 64/65 OR 128/129

Fig. 2 ACE9020 simplified block digram

TXPA+

TXPA-

DIV_OUT+

DIV_OUT-

ACE9020

PIN CONNECTIONS

Pin No. Name Type Description

1 PD1 I Power down control input 1 2 PD2 I Power down control input 2 3 GND Supply Ground 4 BIAS_REF I Reference current for bias control 5 VCC_TX Supply Transmit section supply voltage 6 TXPA+ O Transmit up-converter open collector output 7 TXPA- O Transmit up-converter open collector output 8 RSET_TXPA I Reference current for transmit oscillator

9 GND_TXOSC Supply Ground 10 TANK+ I Transmit oscillator tank circuit 11 TANK- I Transmit oscillator tank circuit 12 VCC_DIV Supply Divider section supply voltage 13 GND_OSC Supply Ground 14 MOD_CNTRL I Modulus control input 15 DIV_OUT+ O Divider output positive 16 DIV_OUT- O Divider output negative 17 RATIO_SEL I Ratio select 18 GND_DIV Supply Ground divider section 19 TXOSC+ O Transmit oscillator monitor output positive 20 TXOSC- O Transmit oscillator monitor output negative 21 VCC_TXOSC Supply Transmit oscillator supply voltage 22 GND_RX Supply Ground 23 RXVCOIN I Input buffer for 1GHz VCO signal from ACE9010 24 n.c. - No connection 25 VCC_RX Supply Receiver section supply voltage 26 n.c. - No connection 27 n.c. - No connection 28 VCC Supply ON/OFF logic supply voltage

ELECTRICAL CHARACTERISTICS

These characteristics apply over these ranges of conditions (unless otherwise stated):

= – 30°C to + 85°C, VCC = 3.75 ± 0.15V or 4.85 ± 0.15V (see fig. 3 for test circuit).

AMB

DC CHARACTERISTICS

Characteristic Min Typ Max Unit Supply Currents

Sleep PD1 = 0, PD2 = 0 0.11 mA Standby PD1 = 1, PD2 = 0 6 8 mA Transmit Set Up PD1 = 0, PD2 = 1 36 51 mA Duplex PD1 = 1, PD2 = 1 48 63 mA

Input Levels

PD1, PD2 High 1.9 3.1 V PD1, PD2 Low 0 0.5 V Mod Cntrl High Vcc/2 + 0.3 Vcc V Mod Cntrl Low 0 Vcc/2 - 0.3 V Ratio Sel High 0.6Vcc Vcc V Ratio Sel Low 0 0.4Vcc V

Input Currents

PD1, PD2 High 40 µA PD1, PD2 Low -0.1 0.1 µA

ACE9020

ELECTRICAL CHARACTERISTICS

These characteristics apply over these ranges of conditions (unless otherwise stated):

AC CHARACTERISTICS

Characteristic Min Typ Max Unit TXOSC Output

Differential Output 500 mV p-p TxOsc Frequency 70 140 MHz Frequency / Supply Sensitivity 75 kHz Spurii > 700MHz -40 dBc Differential Output Capacitance 2 pF External Tank Inductance f = 90MHz 82 100 nH External Tank Inductance f = 122.5MHz 56 68 nH Power up time (from standby) 65 µs

TXPA Output Signal

Output Power (RL = 50Ω) 036dBm Noise at ∆f = +/- 45 MHz -145 dBc/Hz Noise at ∆f = +/- 25 kHz -100 dBc/Hz Harmonic Content -20 dBc Spurious - Image -10 dBc Spurious (fVCO ± 2faux) -30 dBc Spurious (fVCO ± 3faux) -25 dBc Spurious (∆f = 45MHz ± 15 kHz) except 2fVCO - 9faux -105 dBc Spurious 2fVCO - 9faux -60 dBc Spurii within 800 to 940 MHz (note1) -70 dBc Other Spurii except image -30 dBc Isolation TXPA off (PD2 = PD1 = 1) 55 dB Power up time 25 µs Isolation TXPA to RVCOIN 45 dB Residual Modulation (note 2) -40 dB

RVCOIN Input Signal

Signal Level -10 dBm Input Impedance 50 Ω Divider input frequency 800 1100 MHz Upconverter input frequency 910 1040 MHz Phase Noise ∆f = 45MHz -155 dBc/Hz Phase Noise ∆f = 25kHz -117 dBc/Hz Spurious - harmonic -20 dBc Spurious - non-harmonic -80 dBc

Divider

Differential Output Level 500 600 mV p-p Output Rise / Fall time 15 ns Mod Control Set up time 20 ns Mod Control Hold time 1ns

Notes:

1. Exceptions. Harmonics of divider output -37dBc max applicable when fVCO = 975.1354 MHz Ratio = 65 10th Harmonic of faux -47dBc applicable when faux = 90MHz, fVCO = 989.9375MHz

= -30°C to + 85°C, VCC = 3.75 ± 0.15V or V

AMB

4.85 ± 0.15V (see fig. 3 for test circuit).

2. Residual modulation referenced to a 1kHz signal giving 3kHz deviation. Measured with 750µs de-emphasis and CCITT filter.

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