VENUS-L CDMA/AMPS Dual Band RF Receiver Preliminary Information DS5082 Issue 2.1 J June 1999 Features Ordering Iinformation ● Selectable dual RF input ports for 900MHz AMPS and 1900MHz CDMA bands. VENUS-L/KG/QP1S ● Power Management Control VENUS-L/KG/QP1T Description VENUS-L is a dual integrated mixer circuit designed to meet the IS95 and J-STD-008 receive system specifications operating in the 900 MHz and 1900MHz bands. Venus-L is part of a complete chipset solution for CDMA phones called the Planet chipset, and is built on a Mitel advanced bipolar process with FT's of 25GHz. GND VCC CDMA IF RF 1900 CDMA IFB AMPS IF RF 900 AMPS IFB CHIP ENABLE CONTROL BAND 1900 LO 1GHZ LO 2GHZ Figure 2. Block diagram VENUS-L Preliminary Information CDMA IF 1 16 RF 1900 PIN 1 REF. SPOT VCC LO 2GHZ GND RF 900 GND LO 1GHZ VCC AMPS IFB GND CHIP ENABLE BAND 1900 GND CDMA IFB 8 9 AMPS IF QSOP16 Figure1 Pin Connections Circuit Description The RF section of VENUS-L contains all of the circuitry necessary to downconvert the RF signal from 900 MHz or 1900 MHz to an IF of 50-250 MHz, and to correctly interface with a suitable IF SAW filter. Two RF inputs are provided, one for the 1900MHz band and one for the 900 MHz band. The required input is activated by means of the ‘BAND 1900’ pin. The input is a gm stage which will provide a characteristic impedance to correctly terminate the RF image-reject SAW filter. Two LO ports are provided, one for 1900MHz band and one for 900 MHz band, both with low noise buffer amplifiers. External matching components are required on the RF, LO and IF ports. Pin Description Pin No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 2 Pin Name CDMA IF CDMA IFB VCC LO 2GHZ GND RF 900 GND CHIP ENABLE AMPS IF AMPS IFB VCC LO 1GHZ GND RF 1900 GND BAND 1900 Description CDMA (1900MHz mixer) IF SAW output CDMA (1900MHz mixer) IF SAW output bar Positive supply 2 GHz LO input for 1900MHz mixer Ground 900MHz RF input Ground Logic input for chip enable AMPS (900MHz mixer) IF SAW output AMPS (900MHz mixer) IF SAW output bar Positive supply 1GHz LO input for 900MHz mixer Ground 1900MHz RF input Ground Logic input to select 1900MHz or 900MHz signal path operation Preliminary Information VENUS-L Absolute Limits Description Supply voltage, Vcc Operating temperature, Top Storage temperature, Tstg Junction temperature Logic input high, VIH Logic input low, VIL Min. Typ. -30 -40 -30 Max. 4.0 70 125 125 Vcc+0.6 Units V deg C deg C deg C V V -0.6 Comments Pin temperature Ambient temperature Electrostatic Protection. High frequency RF device. This device has limited ESD protection on some pins (500V Human body Model). Electrostatic handling precautions must be applied. Operating Modes Description Standby Mode 900MHz (AMPS) 1900MHz (CDMA) CHIP ENABLE 0 1 1 BAND 1900 X 0 1 Comments All circuits powered down 900MHz (AMPS) signal path enabled 1900MHz (CDMA) signal path enabled Electrical Characteristics (DC specification) TAMB = -30°C to +70°C, VCC = +2.7 to +3.6V. These characteristics are guaranteed by either production test or design. They apply within the specified ambient temperature and supply voltage ranges unless otherwise stated. Characteristic General Supply voltage Operating. Temperature Value Min Typ Max 2.7 -30 3.0 25 3.6 70 V deg C 10 15 13 100 µA mA mA Vcc+0.1 0.5 10 10 V V µA µA Current Consumption Standby Mode, RF section 1900MHz Mode operation 900MHz Mode operation Control Logic Input logic high, VIH Input logic low, VIL Input high current, IIH Input low current, IIL Units Vcc-0.5 -0.1 -10 -10 Conditions All Vcc pins. Ambient All logic inputs All logic inputs All logic inputs All logic inputs 3 VENUS-L Preliminary Information Electrical Characteristics (AC specification) TAMB = -30°C to +70°C, VCC = +2.7 to +3.6V. These characteristics are guaranteed by either production test or design. They apply within the specified ambient temperature and supply voltage ranges unless otherwise stated. Unless otherwise stated the frequencies used for measurements are to be. 1900MHz Signal Path: RF = 1960MHz, LO = 1749.62MHz, IF = 210.38MHz. Characteristic Value Min Typ Units Max 1900MHz Signal Path Overall Power Gain, RF input to IF output Input = RF 1900 Output =CDMA IF and CDMA IFB 9 10 dB LO= -10dBm from a 50 Ohm source Noise Figure 9 11 dB Total to IF outputs (SSB). Input third order intercept point 4 dBm RF Input impedance 50 Ohm With simple external matchin network. Matching network must include an inductor connected between the RF 1900 pin and GND. RF port Return Loss 15 dB With simple external matching network. Matching network mus include an inductor connected between the RF 1900 pin and GND RF Frequency IF Frequency Input 1dB compression Load impedance 4 Conditions 8 1800 50 2000 250 -10 1000 MHz MHz dBm Ω Differential.Will require an external resistor and a simple external matching network. Preliminary Information VENUS-L Electrical Characteristics (AC specification ) Continued TAMB = -30°C to +70°C, VCC = +2.7 to +3.6V. These characteristics are guaranteed by either production test or design. They apply within the specified ambient temperature and supply voltage ranges unless otherwise stated. Unless otherwise stated the frequencies used for measurements are to be. 900MHz Signal Path: RF = 881.5MHz, LO = 966.88MHz, IF = 85.38MHz. Characteristic Value Min Typ Units Max 900MHz Signal Path Overall Power Gain, RF input to IF Conditions Input=RF 900 Output=AMPS IF and AMPS IFB 7 8 9 dB LO= -10dBm from a 50ohm source Noise Figure 9 11 dB Total to IF outputs (SSB). Input third order intercept point 5 dBm RF Input impedance 50 Ohm With simple external matching network. Matching network must include an inductor connected between the RF 900 pin and GND. Return Loss 15 dB With simple external matching network. Matching network must include an inductor connected between the RF 900 pin and GND output RF Frequency IF Frequency Input 1dB compression 800 50 -8 Load impedance RF LO BUFFERS LO feedthrough to IF outputs LO feedthrough to RF inputs LO input level LO input impedance LO port Return Loss 1000 250 MHz MHz dBm Ω 850 -30 -40 -5 50 dBm dBm dBm Ω 15 dB -10 Differential. Will require an externa lresistor and a simple external matching network. With simple external matching network With simple external matching network 5 http://www.mitelsemi.com World Headquarters - Canada Tel: +1 (613) 592 2122 Fax: +1 (613) 592 6909 North America Tel: +1 (770) 486 0194 Fax: +1 (770) 631 8213 Asia/Pacific Tel: +65 333 6193 Fax: +65 333 6192 Europe, Middle East, and Africa (EMEA) Tel: +44 (0) 1793 518528 Fax: +44 (0) 1793 518581 Information relating to products and services furnished herein by Mitel Corporation or its subsidiaries (collectively “Mitel”) is believed to be reliable. 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