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Part: SA9503
Category:
Communication
-> Wireless
-> TDMA/CDMA/WCDMA
-> TDMA
Description: SA9503; Dual-band, Cdma/amps Lna And Downconverter Mixers
Company: Philips Semiconductors
Datasheet: Download SA9503 datasheet File size : 70 kB
Request For quote: Find where to buy SA9503
Datasheet text preview:
INTEGRATED CIRCUITS
SA9503 Dual-band, CDMA/AMPS LNA and downconverter mixers
Objective specification Supersedes data of 1999 Jul 06 1999 Jul 29
Philips Semiconductors
Philips Semiconductors
Objective specification
Dual-band, CDMA/AMPS LNA and downconverter mixers
SA9503
DESCRIPTION
The SA9503 is an integrated CDMA/AMPS low noise amplifier (LNA) plus a downconverter, for both the 900 MHz Cellular band and the 1.9 GHz PCS band. The LNA incorporates 5 settings of digitally selected stepped gain in the Cellular band and in the PCS band. One of the modes (high linearity mode) in each of the Cellular and PCS bands, includes a high IP3 setting in order to meet the 1-tone CDMA desensitization test. The gain, noise figure and IP3 for the remaining 4 low current modes in the Cellular band, are designed in order to have sufficient separation between the antenna power levels at which the LNA gains are changed, based on multi-tone interference levels. A 3 dB overlap is allowed in the antenna power levels for the adjacent modes. Table 1 indicates a typical scenario. The downconverter portion is based on our SA9502 and is designed to meet all the stringent spurious rejections that are required in the Cellular and PCS bands. There are three individual mixer blocks, each optimized for high linearity with low power consumption for operation in one of the following modes: 1900 MHz PCS CDMA, 800 MHz Cellular CDMA, or 800 MHz analog FM AMPS/TACS modes. The circuit has been designed in our advanced QUBiC3 BiCMOS process with 30 GHz fT.
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 6.8 Cellular CDMA 11.5 9 3.5 13 PCS CDMA 12.5 9 4 16
· 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: 16.8 mA Cellular CDMA: 23 mA PCS: 26 mA
FEATURES Versatile step gain LNA
· Low standby current in sleep mode: <50 µA · BCC32++TM package
APPLICATIONS
· Can meet single tone CDMA desensitization requirements · Can meet CDMA two tone interference requirements · Cellular
PARAMETER Gain (dB) Noise figure (dB) Input IP3 (dBm) Current (mA) MODE CEL_L 17 2 5.5 13.2 CEL_1 15.5 1.6 2 4.9 CEL_2 9 1.9 3.5 4.9 CEL_3 3 4.5 2 4.9 CEL_4 4 11 15 3.7
· 800 MHz analog FM and CDMA digital receivers · 1900 MHz PCS band CDMA digital receivers · Supports dual-band and triple-mode operation · Digital mobile communications equipment · Portable, low power radio equipment
· PCS
PARAMETER Gain (dB) Noise figure (dB) Input IP3 (dBm) Current (mA) MODE PCS_L 15.2 2.5 4.5 13.3 PCS_1 14.3 2 1 5.9 PCS_2 8 2.5 2 5.9 PCS_3 2 3.7 1 5.9 PCS_4 4.5 11.5 16 3.7
BCC32++ is a trademark of Fujitsu Microelectronics.
1999 Jul 29
2
Philips Semiconductors
Objective specification
Dual-band, CDMA/AMPS LNA and downconverter mixers
SA9503
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 2 ×2 CDMA_IF 2 CDMA IF BPF BW = 1.23MHz PCS_IF 2
SA9503
1 2 2
2
FM_IF
2 FM IF BPF BW = 30kHz
PCS RF_CEL
CELLULAR
BIAS CTRL
1 2
1
MODE SELECT LOGIC
5 LO_ENABLE CEL LO_IN PCS LO_IN CDMA/FM PCS/CELLULAR S0 S1 S2
CEL_OUT
CEL_IN RX BPF Fo = 881.5MHz BW = 25 MHz
VCC
LO_OUT
SR01935
Figure 1. SA9503 Block Diagram
ABSOLUTE MAXIMUM RATINGS
PARAMETER Supply voltage (VCC) Gain control voltage Logic input voltage Maximum power input Power dissipation (Tamb = 25°C) Storage temperature range RATINGS 0.3 to +3.6 +3.6 0.3 to VCC+0.3 +20 800 65 to +150 UNIT V V V dBm mW °C
RECOMMENDED OPERATING CONDITIONS
PARAMETER Supply voltage (VCC) Operating ambient temperature range (Tamb) Logic input signal levels LOW level input voltage range (VIL) HIGH level input voltage range (VIH) Input bias current (Ibias) At logic 0 At logic 1 At logic 1 or logic 0 0.3 0.5VCC 5 0.2VCC VCC+0.3 +5 V V µA TEST CONDITIONS CONDITIONS LIMITS MIN 2.7 40 TYP 2.85 MAX 3.3 +85 UNIT V °C
1999 Jul 29
3
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