MAX2312 MAXIM [Maxim Integrated Products], MAX2312 Datasheet
MAX2312
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MAX2312 Summary of contents
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... Rev 2; 6/07 CDMA IF VGAs and I/Q Demodulators General Description The MAX2310/MAX2312/MAX2314/MAX2316 are IF receivers designed for dual-band, dual-mode, and sin- gle-mode N-CDMA and W-CDMA cellular phone sys- tems. The signal path consists of a variable gain amplifier (VGA) and I/Q demodulator. The devices fea- ture guaranteed +2.7V operation, a dynamic range of over 110dB, and high input IP3 (-33dBm at 35dB gain, 1 ...
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CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer ABSOLUTE MAXIMUM RATINGS V to GND ..............................................................-0.3V, +6.0V CC SHDN to GND.............................................-0. STBY, BUFEN, MODE, EN, DATA, CLK, DIVSEL ...........................................-0. VGC to GND...............-0.3V, the lesser of ...
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... CDMA IF VGAs and I/Q Demodulators AC ELECTRICAL CHARACTERISTICS (MAX2310/MAX2314 or MAX2312/MAX2316 EV kit 19.68MHz, synthesizer locked with passive 2nd-order lead-lag loop filter, SHDN = high, VGC CDMA 85.88MHz for FM REF set for +35dB voltage gain, differential output load = 10kΩ, all power levels referred to 50Ω, T ...
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... Base Band Spurious due to PLL LOOUT at 85MHz, VCO_L Enabled (Note 9) LOOUT at 210MHz, VCO_H Enabled (Note 9) Charge-Pump Source/Sink Current Charge-Pump Source/Sink Matching Note 1: FM_IQ and FM_I modes are not available on MAX2312 and MAX2316. Note 2: Recommended operating frequency range. Note 210.88MHz 210.89MHz Note 210.88MHz 210 ...
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... CDMA IF VGAs and I/Q Demodulators (MAX2310/MAX2314 or MAX2312/MAX2316 EV kit 19.68MHz, synthesizer locked with passive 2nd-order lead-lag loop filter, SHDN = high, VGC CDMA 85.88MHz for FM REF set for +35dB voltage gain, differential output load = 10kΩ, all power levels referred to 50Ω, T RECEIVE SUPPLY CURRENT vs ...
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... CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer (MAX2310/MAX2314 or MAX2312/MAX2316 EV kit 19.68MHz, synthesizer locked with passive 2nd-order lead-lag loop filter, SHDN = high, VGC CDMA 85.88MHz for FM REF set for +35dB voltage gain, differential output load = 10kΩ, all power levels referred to 50Ω PORT S11 vs ...
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... CDMA IF VGAs and I/Q Demodulators PIN MAX2310 MAX2312 MAX2314 — — 7 — — — — — — 8 — 13, 14 13 16, 17 16 ...
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CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer 10kΩ 0.033μF 3.3nF 18pF 10kΩ 18pF 10kΩ 12pF 10kΩ 12pF 10kΩ Figure 1. MAX2310 Typical Operating Circuit _______________Detailed Description The MAX2310 is intended for dual-band (PCS and ...
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... The MAX2312/MAX2316 quadrature demodulators are simplified versions of the MAX2310 that can be used in single-mode CDMA or dual mode using an external FM discriminator (Figures 2a and 2b). The MAX2312 VCO is optimized for the 67MHz to 300MHz IF frequency range, while the MAX2316 VCO is optimized for the 40MHz to 150MHz IF frequency range. ...
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... CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer 10kΩ 0.033μF 3300pF 12pF 10kΩ 12pF 10kΩ Figure 2a. MAX2312 Typical Operating Circuit 10 ______________________________________________________________________________________ 47pF 0.01μF BYP BYP CPOUT BYP GND STBY DIVSEL TANKH+ CDMA+ 1.5pF 18nH MAX2312 TANKH- ...
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CDMA IF VGAs and I/Q Demodulators 0.033μF 10kΩ 10kΩ 10kΩ DISCRIMINATOR 455kHz V CC LIMITER I FM Figure 2b. MAX2316 Typical Operating Circuit ______________________________________________________________________________________ with VCO and Synthesizer 47pF 0.01μF BYP BYP 3300pF CP_OUT BYP GND STBY DIVSEL 17pF TANKL+ ...
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... CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer Table 2. MAX2312/MAX2316 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 ...
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CDMA IF VGAs and I/Q Demodulators 10kΩ 0.033μF 3300pF 18pF 10kΩ 18pF 10kΩ Figure 3. MAX2314 Typical Operating Circuit The MAX2314 supports CDMA cellular-band, dual- mode operation. As with the MAX2310, the FM mode can be configured for ...
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... For applications requiring an external LO, the VCOs can be bypassed with the VCO_BYP (VB) control bit. The MAX2312/MAX2316 buffer the output of the VCO and provide 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 ...
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... 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 MAX2310’s MODE pin or the MAX2312/ MAX2316’s DIVSEL pin. Programming these registers is discussed in the 3-Wire Interface and Registers sec- tion. 800μ ...
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CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer VCO1 DATA CLK EN START BIT M U DATA/ADDRESS X REGISTER 13-BIT CONTROL REGISTER VCO2 Figure 5. 3-Wire Control Block Diagram MSB *SB DATA * CLOCK *RISE AND FALL REQUIRED ...
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... FT IS 110 COUNTER Ø POL LOCK DET DET TURBO CONTROL CHARGE 2 PUMP CP_OUT VGC ÷2 FT MODE (MAX2310 VCO_L 14 VB VCO_H TC LO_OUT ÷2 BUFEN BD BE (MAX2312/16) IOUT+ IOUT- QOUT+ QOUT- TANKL+ TANKL- TANKH+ TANKH- LOCK 17 ...
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CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer Table 4. Control Register, Default State: 0B57 POWER- BIT ID BIT NAME UP STATE TM TEST_MODE 0 POL CP_POL 1 TE TEST_ENABLE 0 TC TURBO_CHARGE 1 DS DIV_SEL 1 VB ...
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CDMA IF VGAs and I/Q Demodulators START BIT SHIFT REGISTER 1 M1 REGISTER REGISTER CP1 AND R1 REGISTERS CP CP 1/1 1 CP2 AND R2 REGISTERS 2/0 2/1 /1 CTRL REGISTER ...
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... GND 3 TANKL+ 4 TANKL- 5 MAX2310 TANKH+ 6 TANKH- 7 MODE GND 10 REF 11 SHDN 12 IOUT+ 13 IOUT- 14 BYP 1 CPOUT 2 GND 3 DIVSEL 4 TANKH+ 5 MAX2312 TANKH- 6 BUFEN 7 LOOUT GND 10 REF 11 SHDN 12 IOUT+ 13 IOUT ______________________________________________________________________________________ 28 BYP 27 BYP CP_OUT 26 FM- GND 25 FM+ TANKL+ 24 CDMA+ TANKL- ...
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CDMA IF VGAs and I/Q Demodulators Chip Information TRANSISTOR COUNT: 6422 V CC FM- FM+ BYP BYP MAX2310 BYP AGND ______________________________________________________________________________________ with VCO and Synthesizer DAC AVCC CDMA+ CDMA- VGA DATA TANKL+ TANKH+ TANKH- TANKL- MODE Block Diagram QOUT+ QOUT- ...
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CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) Revision History Pages changed at Rev 2: ...