參數(shù)資料
型號(hào)： SA9504
廠商： NXP SEMICONDUCTORS
元件分類： 衰減器
英文描述： Dual-band, PCSCDMA/AMPS LNA and downconverter mixers
中文描述： RF/MICROWAVE DOWN CONVERTER
封裝： PLASTIC LOW PROFILE QUAD FLAT, SOT401-1, 32PIN
文件頁(yè)數(shù)： 2/22頁(yè)
文件大小： 223K
代理商： SA9504
Philips Semiconductors
Preliminary specification
SA9504
Dual-band, PCS(CDMA)/AMPS
LNA and downconverter mixers
2
1999 Oct 28
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 f
T
and 60 GHz f
MAX
.
FEATURES
LNA typical performance
PARAMETER
Cellular LNA
PCS (CDMA) LNA
Gain (dB)
16.5
14.8
Noise figure (dB)
1.6
2
Input IP3 (dBm)
–2
1
Current (mA)
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
4.9
4.9
Downconverter typical performance
PARAMETER
Cellular FM
PCS (CDMA)
Gain (dB)
7.5
11.5
Noise Figure (dB)
10
9
Input IP3 (dBm)
5
4
Current (mA)
(Tx) LO output buffer off
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
μ
A
Small LQFP32 package
6.9
17
APPLICATIONS
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
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