Philips sa9500 DATASHEETS

INTEGRATED CIRCUITS

SA9500

Dual-band, CDMA/AMPS downconverter IC

Product specification Supersedes data of 1998 Jul 07 IC17 Data Handbook

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1998 Aug 11

Philips Semiconductors Product specification

SA9500Dual-band, CDMA/AMPS downconverter IC

DESCRIPTION

The SA9500 integrates all the front end receive mixers necessary for use in dual-band, triple-mode CDMA/AMPS cellular phone handsets. There are three individual mixer blocks, each optimised for high linearity with low power consumption for operation in one of the following modes: High-band 1900MHz PCS CDMA, low-band 800MHz cellular CDMA or analog FM AMPS/TACS modes. Additionally, the entire circuit can be powered down and put into sleep mode, reducing the supply current to less than 20µA. The circuit has been designed in our advanced QUBiC2 BiCMOS process with 20GHz f

FEATURES

•PCS and cellular downconverter mixers typical performance:

– PCS: Gain=1 1.3dB, NF=8.3dB, IIP3= +1.4dBm – CDMA: Gain=10.7dB, NF=9.6dB, IIP3= +6.3dBm – FM: Gain= 7.2dB, NF=10.2dB, IIP3= +5.9dBm

•Separate, selectable IF outputs to suit FM and CDMA bandwiths

•Integrated frequency doubler for PCS mixer LO

•Programmable wideband LO output buffer

•Low voltage operation down to 2.7V

•Low current consumption in “idle”/receive modes:

– PCS : 20.0mA @ 2.7V – CDMA: 20.2mA @ 2.7V – FM: 7.7mA @ 2.7V

•Low standby current in sleep mode <20µA

•TSSOP20 package

APPLICA TIONS

•800MHz analog FM and CDMA digital receivers

•1900MHz PCS band CDMA digital recievers

•Supports dual-mode and triple-mode operation

•Digital mobile communications equipment

•Portable, low power radio equipment

ORDERING INFORMATION

EXTENDED

TYPE NUMBER

SA9500DH 20 TSSOP Plastic thin shrink small outline package; body 6.5 x 4.4 x 1.1 mm SOT360-1

PINS PIN POSITION MATERIAL CODE

PACKAGE

1998 Aug 1 1 853–2109 19859

Philips Semiconductors Product specification

SA9500Dual-band, CDMA/AMPS downconverter IC

BLOCK DIAGRAM

RX BPF Fo = 1960 MHz BW = 60 MHz

PCS_in

Cell_in

RX BPF Fo = 881.5MHz BW = 45 MHz

×2

LO2×LO

PCS

SA9500

MODE

SELECT

LOGIC

CDMA/FM PCS/CELL LO OUT LO GAIN LO IN V

Figure 1. Block Diagram

BIAS

CTRL

CELL

PWR ON/OFF

CDMA_Out

FM_Out

CDMA IF BPF Fo = 85.38MHz BW = 1.23MHz

FM IF BPF Fo = 85.38MHz BW = 30kHz

SR01598

Table 1. Mode Selection Summary

PCS/CEL (Pin 6) CDMA/FM/LO doubler (Pin 17) MODE

low low Cellular FM

low high Cellular CDMA high low CDMA PCS, 1GHz (LO out) high high CDMA PCS, 2GHz (2×LO out)

1998 Aug 1 1

Philips Semiconductors Product specification

SA9500Dual-band, CDMA/AMPS downconverter IC

PIN CONFIGURATION

1 2

FM IFB

GND

PCS RF

CEL RF

GND

5 6 7 8 9

PCS RFB PCS/CEL SEL PWR ON/OFF

Figure 2. Pin Configuration

20FM IF

CDMA IF

CDMA IFB

GND

CDMA/FM SEL

CEL LO IN

GND

LO GAIN

GND

LO OUT10

SR01688

PIN DESCRIPTION

PIN SYMBOL DESCRIPTION

1 FM IF Non-inverting FM IF output 2 FM IFB Inverting FM IF output 3 GND Analog ground 4 PCS RF non-inverting PCS RF input 5 PCS RFB Inverting PCS RF input 6 PCS/CEL SEL PCS and cellular band select 7 PWR ON/OFF Power enable 8 CEL RF Cellular RF input 9 GND Ground

10 V

11 LO OUT LO output to synthesizer 12 GND Ground 13 LO GAIN Logic signal which adjusts the gain of

14 GND Ground 15 GND Ground 16 CEL LO Cellular LO input 17 CDMA/FM SEL CDMA and FM mode select in the

18 GND Ground 19 CDMA IFB Inverting CDMA IF output 20 CDMA IF Non-inverting CDMA IF output

Power supply

the LO buffer

cellular band; selects LO buffer output frequency in PCS mode

FUNCTIONAL DESCRIPTION Mode Selection Logic

The SA9500 downconverter IC has several modes of operation for which the selection logic is summarized in Table 1 and defined in detail in Table 2. Different mode selections require different portions of the circuit to be active. It should be noted that only the states specified in Table 2 are valid selections for operation.

Local Oscillator Section

Drive for the local oscillator is provided through a single ended input via pin16. The LO signal has to be AC-coupled into the circuit and needs to be externally matched. Inside the circuit, the LO signal is amplified and buffered to drive: Either the cellular CDMA mixer or FM mixer or the frequency doubler for the PCS mixer LO and additionally one of the LO output buffers. The mode selection summary in Table 1 shows the logic to apply to pins 6 and 17 to choose one of four possible modes. The LO output buffer can supply either the same frequency as that input on pin 16 or doubled frequency LO in CDMA PCS modes. The LO output power range can be programmed between high gain and low gain (idle mode) settings with LO gain on pin 13.

Cellular and PCS Mixers

The SA9500 has one single ended cellular band RF input which feeds either the cellular CDMA mixer or the cellular FM mixer circuits. Each mixer is optimized to meet cellular band CDMA or analog FM requirements. The cellular FM mixer has its own dedicated differential output on pins 1 and 2 which should be externally matched to the FM IF SAW filter . The cellular CDMA mixer shares the same output pins with the CDMA PCS mixer. Selection between these two mixers is via pin 6 (PCS/CEL) and as the two mixers are never on at the same time, it allows a common CDMA SAW filter to be used for both bands. The CDMA PCS mixer has a differential RF input which should be used with an external balun matching circuit. To avoid upsetting the internal biasing, the RF inputs at both cellular and PCS band mixers should be AC-coupled. The CDMA and FM IF mixer outputs are of the open collector type. So, they should be biased to the supply voltage V with external tuning inductors which can also serve in the matching of the IF SAW filter.

1998 Aug 1 1

Philips Semiconductors Product specification

PARAMETER

TEST CONDITIONS

ÁÁÁÁ

UNITS

ÁÁÁÁ

Logic i

ÁÁÁÁ

SA9500Dual-band, CDMA/AMPS downconverter IC

ABSOLUTE MAXIMUM RATINGS

PARAMETER

Supply voltage (VCC) Logic input voltage Maximum power input Power dissipation, T

amb

=25°C Maximum operating junction temperature Storage temperature

RECOMMENDED OPERATING CONDITIONS

Supply voltage (VCC)

nput voltage range

Operating ambient temperature range (T Operating junction temperature range

amb

)

LOW

HIGH

MIN.

2.7

–0.3

0.5V –30

RATINGS

–0.3 to +6.0

–0.3 to VCC+0.3

–65 to +150

LIMITS

+20 800 150

TYP.

2.85

MAX.

3.3

0.2V

VCC+0.3

+85 105

UNITS

V V

dBm

°C °C

V V

°C °C

MODE SELECT LOGIC AND DC CHARACTERISTICS

Table 2. Mode Logic Definition

VCC = +2.7 V to +3.3 V; T

MODE

MODE DESCRIPTION LO GAIN/ POWER/ PCS/CEL CDMA/FM

1 PCS RxTx

(with doubled LO out)

2 PCS Idle

(with doubled LO out) 3 PCS RxTx high high high low 23.5 mA 26.5 mA 5 4 PCS Rx Idle low high high low 20.0 mA 22.5 mA 6 5 Cellular CDMA RxTx high high low high 24 mA 28 mA 7 6 Cellular CDMA Rx Idle low high low high 20.2 mA 24 mA 8 7 Cellular FM RxTx high high low low 11 mA 14.4 mA 9 8 Cellular FM Rx Idle low high low low 7.7 mA 9.9 mA 10 9 Sleep x low x x 12 µA 60 µA 11

NOTE:

x = Don’t care

= –30°C to +85°C, unless specified otherwise.

amb

high high high high 27.0 mA 30.6 mA 3

low high high high 21.3 mA 24.3 mA 4

TYPICAL

CURRENT

CONSUMPTION

MAXIMUM CURRENT

CONSUMPTION

FIGURE

1998 Aug 1 1

Philips Semiconductors Product specification

PARAMETER

TEST CONDITIONS

UNITS

IF output load impedance

Conversion gain

Noise figure

SA9500Dual-band, CDMA/AMPS downconverter IC

AC ELECTRICAL CHARACTERISTICS

VCC = +2.7V to +3.3V; T Appropriate external matching necessary.

Cellular Band Downconverter

RF input frequency range 869 894 MHz LO input frequency range 950 1030 MHz IF output frequency range (CDMA) 50 300 MHz IF output frequency range (FM) 50 300 MHz

Input IP3

RF input return loss ZS = 50Ω 11.0 dB LO input return loss ZS = 50Ω 10.0 dB LO output return loss ZS = 50Ω 8.0 dB LO input power range –6.0 –3.0 0.0 dBm

LO output power range with LO buffer @ low gain –16.0 –15.0 –14.0 dBm

LO (input and output) to RF leakage Single-ended in, single-ended out –34.5 –31.5 dBm LO (input and output) to IF leakage

(CDMA) LO (input and output) to IF leakage

(FM) RF to LO (input) isolation Single-ended in, single-ended out 30 32.8 dB RF to IF isolation (CDMA) Single-ended in, dif ferential out 20 22.3 dB RF to IF isolation (FM) Single-ended in, differential out 6 8.2 dB LO output to LO input isolation Single-ended in, single-ended out 26.5 34.5 dB

Spurious response rejection

= +25°C; Plo = –3 dBm, fIF = 85.40 MHz; unless specified otherwise.

amb

CDMA, differential 1000 Ω FM, single-ended, with ext. balun 850 Ω CDMA 9.5 10.7 11.6 dB FM 5.5 7.2 7.8 dB CDMA mode, SSB 9.6 10.5 dB FM mode, SSB 10.2 11.0 dB CDMA mode,

tone spacing = 800 kHz FM mode, tone spacing = 60 kHz 4.5 5.9 dBm

ZL = 50Ω

with LO buffer @ high gain –7.5 –5.0 –4.0 dBm

Single-ended in, differential out –33.6 –29.0 dBm

Single-ended in, differential out –20.0 –19.0 dBm

With Tx band interferer at LO input port or LO buffer output port of –40 dBm max and with Pint = –31 dBm in Rx band.

LIMITS

MIN. –3σ TYP. +3σ MAX.

3.5 6.3 dBm

61.0 dB

1998 Aug 1 1

Philips Semiconductors Product specification

PARAMETER

TEST CONDITIONS

UNITS

SA9500Dual-band, CDMA/AMPS downconverter IC

AC ELECTRICAL CHARACTERISTICS (continued)

VCC = +2.7V to +3.3V; T Appropriate external matching necessary.

PCS Downconverter

RF input frequency range 1810 1990 MHz LO input frequency range With doubler 1007 1050 MHz IF output frequency range 50 300 MHz IF output load impedance Differential 1000 Ω

Conversion gain

Noise figure

Input IP3 RF input return loss ZS = 50Ω, with external balun 7.5 dB

LO input return loss ZS = 50Ω 10 dB LO output return loss ZS = 50Ω, single LO out 8 dB LO input power range –6 –3 0 dBm

LO output power range with LO buffer @ low gain –16.0 –15.0 –14.0 dBm

LO (input and output) to RF leakage

LO (input and output) to IF leakage

RF to LO (input) isolation RF to IF isolation Single-ended in, differential out 20 42.0 dB LO output to LO input isolation

Spurious response rejection

= +25°C; Plo = –3 dBm, fIF = 85.40 MHz; unless specified otherwise.

amb

MIN. –3σ TYP. +3σ MAX.

@ fIF, over RF/LO frequency ranges

@ fIF, over RF/LO frequency ranges, SSB

@ fIF, over RF/LO frequency ranges

ZL = 50Ω, single LO out

with LO buffer @ high gain –7.5 –5.0 –4.0 dBm

Single-ended in, single-ended out, with and without doubler

Single-ended in, differential out, with and without doubler

Single-ended in, single-ended out, with and without doubler

Single-ended in, single-ended out, with doubler

1/2 IF spur, fIF = 85.4 MHz/111.38 MHz, with and without doubler, P

= –30 dBm at RF input.

int

With Tx band interferer at LO input port or LO buffer output port of –40 dBm max and with P

= –21 dBm in Rx band.

int

LIMITS

9.5 11.3 11.7 dB

8.3 10.5 dB

1.0 1.4 dBm

–39.0 –35 dBm

–47.0 –35 dBm

30 56.0 dB

30 35.0 dB

56.0 58.0 dB

71.0 dB

1998 Aug 1 1

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