MAX2309 MAXIM [Maxim Integrated Products], MAX2309 Datasheet
MAX2309
Available stocks
Related parts for MAX2309
MAX2309 Summary of contents
Page 1
... Including the low-noise voltage-con- trolled oscillator (VCO) and synthesizer, the MAX2306 draws only 26mA from a +2.75V supply in CDMA (dif- ferential IF) mode. The MAX2306/MAX2308/MAX2309 are available in 28- pin QFN packages. Single/Dual/Triple-Mode CDMA Handsets Globalstar Dual-Mode Handsets Wireless Data Links ...
Page 2
CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................-0.3V to +6.0V CC SHDN to GND.............................................-0. STBY, BUFEN, MODE, EN, DATA, CLK, DIVSEL ...........................................-0. VGC to GND...............-0.3V, the lesser ...
Page 3
... CDMA IF VGAs and I/Q Demodulators AC ELECTRICAL CHARACTERISTICS (MAX2306/MAX2308/MAX2309 EV kit 19.2MHz, 0.6Vp-p synthesizer locked with passive 3rd-order lead-lag loop filter, SHDN = high, VGC set for f = 183.7MHz REF +35dB voltage gain, differential output load = 10kΩ, all power levels referred to 50Ω, T PARAMETER ...
Page 4
... Maximum Phase Detector Comparison Frequency Phase Noise TURBO LOCK Charge-Pump Source/Sink Current Charge-Pump Source/Sink Matching Note 1: FM_IQ and FM_I modes are not available on MAX2309. Note 2: Recommended operating frequency range. Contact factory for operating frequency outside this range. Note 183.7MHz 183.71MHz Note 183 ...
Page 5
... CDMA IF VGAs and I/Q Demodulators (MAX2306/MAX2308/MAX2309 EV kits, V synthesizer locked with passive 3rd-order lead-lag loop filter, SHDN = high, VGC set for +35dB voltage gain, differential output load = 10kΩ, all power levels referred to 50Ω, T RECEIVE SUPPLY CURRENT vs. SUPPLY VOLTAGE 35.00 32. +85°C A 30. +25° ...
Page 6
... CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer (MAX2306/MAX2308/MAX2309 EV kits, V synthesizer locked with passive 3rd-order lead-lag loop filter, SHDN = high, VGC set for +35dB voltage gain, differential output load = 10kΩ, all power levels referred to 50Ω PORT PARALLEL RESISTANCE vs ...
Page 7
... CDMA IF VGAs and I/Q Demodulators PIN MAX2306 MAX2308 MAX2309 1, 28 — — — — — — — — — — 12, 13 12 ...
Page 8
... MAX2306 that can be used in single- mode CDMA or triple mode using an external FM dis- criminator (Figure 3). The MAX2309 VCO is optimized for the 67MHz to 300MHz IF frequency range. The MAX2309 includes a buffered output for the VCO. The buffered VCO output can be used to support sys- 8 _______________________________________________________________________________________ ...
Page 9
... QOUT- LOCK V CC The MAX2309 buffers the output of the VCO and pro- vides this signal at the LOOUT pin. This signal is enabled by the BUFEN (BE) control bit or by the BUFEN control pin. The frequency of this signal is selected by the BUF_DIV (BD) control bit, and can be either the VCO frequency or half the VCO frequency ...
Page 10
... M2), the R counter (R1, R2), and the charge-pump output current magnitude (CP1, CP2). The DIVSEL (DS) bit selects which set of registers is used. It can be over- ridden by the MAX2306’s MODE pin or the MAX2309’s DIVSEL pin. Programming these registers is discussed in the 3-Wire Interface and Registers section. ...
Page 11
CDMA IF VGAs and I/Q Demodulators Table 2. MAX2308 Control Register States OPERATIONAL ACTION MODE RESULT Shutdown pin completely shuts down SHUTDOWN chip 0 in shutdown register bit leaves seri- SHUTDOWN al port active 0 in standby pin turns off ...
Page 12
CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer 2.4kΩ 0.068µF 0.01µF 33pF 10kΩ 2pF 33pF 10kΩ Figure 2. MAX2308 Typical Operating Circuit 12 ______________________________________________________________________________________ 47pF 0.01µF 0.01µF BYP BYP 0.01µF MAX2308 CP_OUT BYP 0.01µF GND FM- ...
Page 13
... CDMA IF VGAs and I/Q Demodulators Table 3. MAX2309 Control Register States OPERATIONAL ACTION MODE RESULT Shutdown pin com- SHUTDOWN pletely powers down the chip 0 in shutdown register SHUTDOWN bit leaves serial bus active 0 in standby pin turns STANDBY off VGA and modulator only ...
Page 14
... CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer 0.068µF 2.4kΩ 10kΩ 10kΩ DISCRIMINATOR 455kHz V CC LIMITER I FM Figure 3. MAX2309 Typical Operating Circuit 14 ______________________________________________________________________________________ 47pF 0.01µF BYP BYP 0.01µF CP_OUT BYP GND STBY DIVSEL 33pF TANKH+ CDMA+ 2pF 33nH ...
Page 15
CDMA IF VGAs and I/Q Demodulators TANK_+ Figure 4. Voltage-Controlled Oscillators VCO_H DATA CLK 13-BIT CONTROL VCO_L Figure 5. 3-Wire Control Block Diagram ______________________________________________________________________________________ with VCO and Synthesizer V CC 800µ ...
Page 16
CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer MSB *SB DATA *START BIT MUST BE LOGIC HIGH. CLK RISE AND FALL REQUIRED PRIOR TO EN GOING LOW. EN Figure 6. 3-Wire Interface Timing Diagram Table 4. Control Register, ...
Page 17
CDMA IF VGAs and I/Q Demodulators START BIT SHIFT REGISTER 1 M1 REGISTER REGISTER CP1 AND R1 REGISTERS CP 1/1 CP2 AND R2 REGISTERS CP 2 CTRL REGISTER Figure 7. Programming ...
Page 18
... FT IS 110 COUNTER Ø POL LOCK DET DET TURBO CONTROL CHARGE 2 PUMP CP_OUT Functional Diagram VGC IOUT+ IOUT- ÷2 QOUT+ QOUT- FT MAX2306 MODE IS VS VCO_L TANKL+ TANKL- VB TANKH+ TANKH- VCO_H TC LOCK LO_OUT ÷2 BUFEN BD BE MAX2309 ...
Page 19
CDMA IF VGAs and I/Q Demodulators V CC FM- FM+ CDMA+ CDMA- BYP BYP MAX2306 TANKL+ BYP AGND TANKL- ______________________________________________________________________________________ with VCO and Synthesizer DAC AVCC QOUT+ QOUT- VGA DATA EN CLK PHASE CHARGE PUMP DETECTOR ...
Page 20
... CC 16 DATA GND REF * * * TANKH TANKH BUFEN 3 19 MAX2309 LOOUT GND 6 16 REF QFN-EP For the latest package outline information www.maxim-ic.com/packages. Printed USA is a registered trademark of Maxim Integrated Products. Pin Configurations ...