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Part: SA9504
Category:
Communication
-> Wireless
-> TDMA/CDMA/WCDMA
-> TDMA
Description: SA9504; Dual-band, Pcs(cdma)/amps Lna And Downconverter Mixers
Company: Philips Semiconductors
Datasheet: Download SA9504 datasheet File size : 70 kB
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Datasheet text preview:
INTEGRATED CIRCUITS
SA9504 Dual-band, PCS(CDMA)/AMPS LNA and downconverter mixers
Preliminary specification Supersedes data of 1999 Aug 24 1999 Oct 28
Philips Semiconductors
Philips Semiconductors
Preliminary specification
Dual-band, PCS(CDMA)/AMPS LNA and downconverter mixers
SA9504
DESCRIPTION
The SA9504 is an integrated receiver front-end for 900 MHz Cellular (AMPS) and 1.9 GHz PCS (CDMA) phones. This dual-band receiver circuit has low noise amplifiers and downconverters for both bands, and provides an elegant solution for RF-to-IF conversion. The two cascode LNAs have been designed to provide high gain with very low noise figures and high linearity. The downconverter portion is based on the Philips SA9502. There are two individual mixer blocks, each optimized for low noise figure and high linearity. The whole circuit is designed for low power consumption, high performance, and is compatible with the requirements for Cellular (AMPS) and PCS (CDMA) handsets. The circuit has been designed in our advanced QUBiC3 BiCMOS process with 30 GHz fT and 60 GHz fMAX.
Downconverter typical performance
PARAMETER Gain (dB) Noise Figure (dB) Input IP3 (dBm) Current (mA) (Tx) LO output buffer off Cellular FM 7.5 10 5 6.9 PCS (CDMA) 11.5 9 4 17
FEATURES LNA typical performance
PARAMETER Gain (dB) Noise figure (dB) Input IP3 (dBm) Current (mA) Cellular LNA 16.5 1.6 2 4.9 PCS (CDMA) LNA 14.8 2 1 4.9
· Separate, selectable IF outputs to suit FM and CDMA bandwidths · Buffered Cellular and PCS LO inputs · Integrated frequency doubler for PCS mixer LO · Differential (Tx) LO output buffer (can be switched on or off) · Low voltage operation down to 2.7 volts · Mixers current consumption with (Tx) LO buffer on:
Cellular FM: 17.4 mA PCS: 27.6 mA
· Low standby current in sleep mode: <50 µA · Small LQFP32 package
APPLICATIONS
· LNAs for both Cellular (AMPS) and PCS (CDMA) bands · High gain, low noise figure, high linearity performance · Cascode output structure requiring no external matching · Low power consumption, typical 4.9 mA · Low voltage operation down to 2.7 volts
· 800 MHz analog FM and receivers · 1.9 GHz PCS (CDMA) digital receivers · Supports dual-band operation · Digital mobile communications equipment · Portable, low power radio equipment
1999 Oct 28
2
Philips Semiconductors
Preliminary specification
Dual-band, PCS(CDMA)/AMPS LNA and downconverter mixers
SA9504
BLOCK DIAGRAM
RX BPF Fo = 1960 MHz BW = 60 MHz 2 PCS_OUT PCS_IN PCS IF BPF BW = 1.23MHz 2 2 RF_PCS PCS_IF 2
×2
SA9504
1 2 2
2
FM_IF
2 FM IF BPF BW = 30kHz
PCS RF_CEL
CELLULAR
BIAS CTRL
1 2
1
MODE SELECT LOGIC
4 LO_ENABLE CEL LO_IN PCS LO_IN LO_X2_EN PCS/CELLULAR S0 S1
CEL_OUT
CEL_IN RX BPF Fo = 881.5MHz BW = 25 MHz
VCC
LO_OUT
SR02107
Figure 1. SA9504 Block Diagram
ABSOLUTE MAXIMUM RATINGS1
PARAMETER Supply voltage (VCC) Logic input voltage Maximum power input Power dissipation (Tamb = 25°C) Storage temperature range RATINGS 0.3 to +3.6 0.3 to VCC+0.3 +20 800 65 to +150 UNIT V V dBm mW °C
NOTES: 1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to absolute-maximum-rated-conditions for extended periods may affect device reliability.
RECOMMENDED OPERATING CONDITIONS
PARAMETER Supply voltage (VCC) Operating ambient temperature range (Tamb) TEST CONDITIONS CONDITIONS LIMITS MIN 2.7 40 TYP 2.85 MAX 3.3 +85 UNIT V °C
1999 Oct 28
3
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