MGCR01 Dual Mode IF Receiver for TDMA/AMPS and CDMA/AMPS Datasheet Features • • • • • • • DS4721 ISSUE 4.4 November 2001 Ordering Information MGCR01/KG/QP1S MGCR01/KG/QP1T Dual IF Inputs 50 to 250 MHz 90dB AGC Gain Control IQ demodulator On chip oscillator provides high accuracy quadrature LO generation Optional IF Output 3 Volt Power Supply 28 lead QSOP Package and differential I and Q baseband outputs. The MGCR01 interfaces directly with MGCM01 for TDMA/AMPS (using 60kHz low IF) and MGCM03 or MGCM04 for CDMA and AMPS applications. The on chip oscillator and prescaler are also compatible with the PLL synthesisers on these devices. Description The MGCR01 is designed for use in dual mode mobile phones (TDMA/AMPS and CDMA/AMPS). The circuit provides IF amplification with gain control IF OUT IF VEE IF VCC FM IFIN I OUT CDMA IFIN Q OU T AGC Gain Control Temperature Comp. DLL PRESCALER Overload Indicator STARTUP ENABLE BAND 1900 DIV2 EN Mode Control VHF VCC VHF VEE MODE CDM VHF BUF VHF RES OVERLOAD DET Figure 1 - Block Diagram 1 MGCR01 IF VCC IF OUTB IF OUT IF VEE GND CDMA IFIN CDMA IFINB FM IFIN FM IFINB AGC AGCB MODE CDMA ENABLE GND VHF VCC I OUTB I OUT VHF VEE OVERLOAD DET VHF RES VHF RESB BAND 1900 VHF BUF VHF BUFB DIV2 EN Q OUT Q OUTB STARTUP QSOP28 Figure 2 - Pin Connections Pin No. Pin Name Description 1 IF VCC 2 IF OUTB IF ouput 3 IF OUT IF output 4 IF VEE Ground for IF inputs and AGC blocks 5 GND Substrate ground 6 CDMA IFIN IF input (CDMA) 7 CDMA IFINB IF input (CDMA) 8 FM IFIIN IF input (FM) 9 FM IFINB IF inputs (FM) (AC ground) 10 AGC AGC Control for IF section 11 AGCB 12 MODE CDMA 13 ENABLE 14 GND 15 STARTUP 16 QOUTB Q channel baseband output 17 QOUT Q channel baseband output 18 GND 19 VHF BUFB VHF oscillator buffered output for synthesiser 20 VHF BUF VHF oscillator buffered output for synthesiser 21 BAND 1900 VHF oscillator mode (see table 1) 22 VHF RESB VHF VCO resonator 23 VHF RES VHF VCO resonator 24 OVERLOAD DET 25 VHF VEE 26 I OUT I channel baseband output 27 I OUTB I channel baseband output 28 VHF VCC Supply for IF inputs and AGC blocks AGC control for IF sections (AC ground) CDMA/FM input select Power up AGC sections of device Substrate Ground Power up Oscillator, DLL and Mixer Ground Overload detector output Ground for VHF VCO and DLL blocks Supply for VHF and DLL blocks Table 1 - Pin Description 2 MGCR01 X = Don’t Care Description ENABLE STARTUP MODE CDMA BAND 1900 Conditions Standby Mode 0 0 X X All circuits powered down except logic inputs Start up Mode 0 1 X 1 For high band IF 0 1 X 0 For low band IF Turns on VCO circuits, DLL quadrature generation, prescaler and IQ demodulator. All other circuits remain powered down CDMA mode 1 1 1 1 For high band IF 1 1 1 0 For low band IF All circuits operational except for IF output buffer, CDMA input stage selected. FM Mode 1 1 0 0 All circuits operational except for IF output buffer, FM input stage selected. Alternative FM mode 1 1 0 1 Note 4 CDMA IF AGC only mode 1 0 1 X Demodulator and LO generation circuitry powered down. IF output buffer enabled FM IF AGC 1 0 0 X Demodulator and LO generation circuitry powered down. IF output buffer enabled. Table 2 - Electrical Characteristics (Mode Control) Notes: 1. STARTUP mode is provided to allow VCO/DLL/prescalers to stabilise before signal path is activated. This is a power-saving feature since the signal path is redundant during this period. If this feature is not required, the ENABLE and STARTUP control pins can be shorted together so that all circuitry is activated at the same time. 2. In high band mode (Band 1900 = 1) the VCO operates at twice the IF frequency. For example if IF = 210.38MHz then the oscillator operates at 420.76MHz. A delay locked loop (DLL) circuit then generates the quadrature LO signals. 3. In low band mode (Band 1900 = 0) the VCO operates at 4 times the IF frequency. for example if IF = 85.38MHz the oscillator operates at 341.52MHz. This is then divided and uses DLL circuit to provide the quadrature LO signals. 4. This mode can be used for FM. The VCO operates at twice the LO frequency. This mode is not normally used as a large tuning range is required on the VCO. 3 MGCR01 DLL and Prescaler divide ratios The BAND 1900 and DIV2 EN inputs allow the overall divide ratio to control the total divide ratio in MGCR01 as shown in the following table. BAND 1900 DIV2 EN DLL Divide Ratio Prescaler Divide Ratio Total Divide Ratio 1 1 2 2 4 0 1 4 2 8 1 0 2 4 8 0 0 4 2 8 Table 3 - Prescaler Ratios Notes: if DIV2 EN is set low then the total divider ratio is always 8. If DIV2 EN is set high then the prescaler divide ratio is always 2. For example with BAND 1900 high and if the oscillator frequency is 300MHz, then the DLL output (the mixer LO frequency) will be 150MHz and the prescaler output will be 75MHz. Description Min Typ Supply Voltage Max Units 4.0 Volts Comments Operation temperature, Tamb -30 +100 °C Storage temperature, Tstg -40 +125 °C Junction temperature, Tj +150 °C Power dissipation 350 mW Vcc+0.6 Volts All pins except VCC and GND All pins except VCC and GND Maximum Pin Voltage Minimum Pin Voltage -0.6 Volts ESD voltage 1.75 kV Ambient temperature Human Body Metal Table 4 - Absolute Maximum Ratings Electrostatic handling precautions must be applied. 4 MGCR01 Tamb= 30°C to +70°C, VCC = +2.7 to +3.6. These characteristics are guaranteed by either production test or design. They apply within the specified ambient temperature and supply voltage unless otherwise stated. Value Characteristic General Supply Voltage Operating Temperature DC Common Mode voltages I OUT, I OUTB (CDMA Mode) I OUTB, QOUTB I OUT<Q OUT (FM Mode) I OUTB, Q OUTB Conditions 3.6 85 V °C All VCC Pins Ambient See note 1 0.1 13 23 23 13 18 mA mA mA mA mA mA VCC+0.1 10 10 V µA µA ms V kΩ Typ Max 2.7 -30 3.0 27 0.03 8 14 14 8 11 Current Consumption Standby Mode Startup Mode CDMA Mode FM Mode CDMA AGC only Mode FM AGC only Mode Mode Control Logic CMOS input logic high, VIH CMOS input high current, IIH CMOS input low current, IIL Switching time between any two modes AGC Control AGC Input impedance Units Min VCC-0.5 -10 -10 3 0.1 100 130 2.6 160 VCC-0.8 VCC-0.6 VCC-0.4 V VCC-0.8 VCC-0.6 VCC-0.4 V All logic inputs All logic inputs All logic inputs Table 5 - Electrical Characteristics (DC specifications) Notes: 1. Specifications are guaranteed over -30 to + 70°C, however operation is guaranteed over the extended range of -30 to +85°C with minimal variation in specified parameters. 5 MGCR01 Tamb= 30°C to +70°C, VCC = +2.7 to +3.6. These characteristics are guaranteed by either production test or design. They apply within the specified ambient temperature and supply voltage unless otherwise stated. Frequency = 210.38MHz Value Characteristic Units Min Typ 46 48 Conditions Max CDMA Max Voltage Gain to demodulator output Min Voltage Gain to demodulator output Max Voltage Gain to IF buffer output -55 38 Min Voltage Gain to IF buffer output AGC control Max -47 41 -51 -49 2.6 AGC control Min 0.1 Gain slope 40 dB AGC = 2.6v dB AGC = 0.1V dB IF mode dB IF mode V Gain = Max V Gain = Min dB/V Gain slope linearity 6 90 dB/V Gain temperature stability -2 2 dB -0.1 0.1 dB Within channel bandwidth (1.25MHz) 6.5 dB Rs (500Ω) Channel gain variation @ 210.38MHz NFGainmax 5.5 Input V1dBGainmin 104 -13 IIP3Gainmax 69 -48 Input impedance 110 -7 IF Frequency 50 CDMA to Amps isolation 30 dBµV dBm Minimum gain Power (500Ω) dBµV dBm Max gain Power (500Ω) Ω 500 250 Over gain control range With addition of external resistor across IF inputs MHz dB Table 5 - Electrical Characteristics (DC specifications) - Continued 6 MGCR01 Tamb= 30°C to +70°C, VCC = +2.7 to +3.6. These characteristics are guaranteed by either production test or design. They apply within the specified ambient temperature and supply voltage unless otherwise stated. Frequency = 85.38MHz Value Characteristic Units Min Typ 50 54 Conditions Max FM AGC Max Voltage Gain to demodulator output Min Voltage Gain to demodulator output Max Voltage Gain to IF buffer output -49 49 Min Voltage Gain to IF buffer output AGC control Max -42 56 -48 -40 2.6 AGC control Min 0.1 Gain slope 40 dB To demodulator outputs dB To demodulator dB IF AGC only mode dB IF AGC only mode V Gain = Gain max V Gain = Gain min dB/V Gain slope linearity 6 80 dB/V Gain temperature stability -2 2 dB For any gain setting 6 dB 850Ωsource NFGainmax Input V1dBGainmin IIP3Gainmax 98 105 dBµV Minimum gain -17 -14 dBm Power (850Ω) 65 dBµV Max Gain -54 dBm Power (850Ω) Input Impedance IF Frequency Over gain control range Ω 850 With addition of external resistor across IF inputs 50 250 MHz 100 500 MHz Note 2 100 400 MHz Note 3 -98 dBc/Hz @30kHz, Hiband mode Minimum tank Q=15 Note 1 -130 dBc/Hz @>3MHz, Note 1 VHF Local Oscillator Quaderature generation VCO Frequency VCO Phase noise -100 VCO Noise floor VCO buffer output VCO buffer output impedance 350 mV 100 Ω pk-pk single ended Differential Table 5 - Electrical Characteristics (DC specifications) - Continued Notes: 1. Phase noise is specified at the LO Input to the mixers. 2. Total divide ratio to prescaler output is 8. 3. Total divide ratio to prescaler ouput is 4. The prescaler output is limited to 100MHz max. 7 MGCR01 Tamb= 30°C to +70°C, VCC = +2.7 to +3.6. These characteristics are guaranteed by either production test or design. They apply within the specified ambient temperature and supply voltage unless otherwise stated. Value Characteristic Units Min Typ Demodulator Ouput I OUT, I OUTB, Q OUT, Q OUTB I/Q Gain matching 0.1 0.25 dB I/Q Phase matching 0.5 2 deg 4 5 kΩ Output impedance 3 Baseband Bandwidth Output IP3 Conditions Max 117 50 MHz 119 dBµV Baseband differential DC offset 3.5 Differential Defined by on-chip first order low-pass filter mV Overload Detect Referred to baseband outputs CDMA 104 dBµV FM Mode 106 dBµV Table 5 - Electrical Characteristics (DC specifications) - Continued 8 MGCR01 Additional Information Typical Performance Characteristics 60 40 Gain (dB) 20 T = -30 deg C T = 25 deg C T= 70 deg C 0 -20 -40 -60 0.00 0.50 1.00 1.50 2.00 2.50 3.00 AGC Control Voltage (V) Figure 3 - CDMA Gain v AGC Voltage 60 40 Gain (dB) 20 T = -30 deg C T = 25 deg C T= 70 deg C 0 -20 -40 -60 0.00 0.50 1.00 1.50 2.00 2.50 3.00 AGC Control Voltage (V) Figure 4 - FM Gain v AGC Voltage 9 MGCR01 60 40 Gain (dB) 20 VCC = 2.7 VCC = 3 VCC = 3.6 0 -20 -40 -60 0.00 0.50 1.00 1.50 2.00 2.50 3.00 AGC Control Voltage (V) Figure 5 - CDMA Gain v AGC Voltage 60 40 Gain (dB) 20 VCC = 2.7 VCC = 3 VCC = 3.6 0 -20 -40 -60 0 0.5 1 1.5 2 2.5 3 AGC Control Voltage (V) Figure 6 - FM Gain v AGC Voltage 10 For more information about all Zarlink products visit our Web Site at www.zarlink.com Information relating to products and services furnished herein by Zarlink Semiconductor Inc. or its subsidiaries (collectively “Zarlink”) is believed to be reliable. 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