MAX2369 MAXIM [Maxim Integrated Products], MAX2369 Datasheet
MAX2369
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MAX2369 Summary of contents
Page 1
... The MAX2369 includes two RF LO input ports and two PA driver ports, eliminating the need for external switching circuitry. The MAX2369 takes advantage of the serial bus to set modes such as charge-pump current, high or low side- band injection, and IF/RF gain balancing packaged ...
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... Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. DC ELECTRICAL CHARACTERISTICS (MAX2369 Test Fixture BATT unless otherwise noted ...
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... AC ELECTRICAL CHARACTERISTICS (MAX2369 Evaluation Kit: 50Ω system, operating modes as defined in Table 6, input voltage at I and Q = 200mV common mode = V /2, 300kHz quadrature CW tones, IF synthesizer locked with passive lead-lag second-order loop filter, REF = CC = SHDN = CS = TXGATE = +2.75V, V 200mVp-p at 19.44MHz -7dBm 1017.26MHz 2061.26MHz, IFIN = 125mV ...
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... Complete Dual-Band Quadrature Transmitter AC ELECTRICAL CHARACTERISTICS (continued) (MAX2369 Evaluation Kit: 50Ω system, operating modes as defined in Table 6, input voltage at I and Q = 200mV common mode = V /2, 300kHz quadrature CW tones, IF synthesizer locked with passive lead-lag second-order loop filter, REF = CC = SHDN = CS = TXGATE = +2.75V, V 200mVp-p at 19.44MHz, V ...
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... V = +2.8V BAT IF P SETTLING TIME 181.26MHz -10 0 100 200 300 400 500 600 700 800 900 1000 TIME (µs) OUTPUT POWER vs. VGC INPUT CELLULAR -10 -15 -20 -25 -30 -35 PCS -40 -45 -50 -55 -60 1.5 1.7 1.9 2.1 2.3 2.5 VGC (V) IF OUTPUT POWER vs. VGC INPUT ...
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... Complete Dual-Band Quadrature Transmitter (MAX2369EVKIT +2.8V 3.0V BAT I/Q BASEBAND FREQUENCY RESPONSE 0 -0.5 -1.0 -1.5 -2.0 -2.5 -3 FREQUENCY (MHz) RFH OUTPUT SPECTRUM 10 DESIRED 0 -10 IMAGE -20 LO -30 -40 -50 -60 -70 -80 -90 1500 1700 1900 2100 2300 2500 FREQUENCY (MHz) LOL PORT S11 ...
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PIN NAME Transmitter RF Output for Cellular Band (800MHz to 1000MHz)—for both FM and digital modes. 1 RFL This open-collector output requires a pullup inductor to the supply voltage, which is part of the output matching network and may be ...
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Complete Dual-Band Quadrature Transmitter PIN NAME Supply for the I/Q Modulator. Bypass with capacitor as close to the pin as possible. The bypass capacitor must not share its ground vias with any other branches. Differential Q-Channel Baseband ...
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... VGC pin as the IF VGA to provide optimum lineari- ty and noise performance. The total power control range is >100dB. /2 and a CC The MAX2369 includes two power-amplifier (PA) drivers. RMS Each is optimized for the desired operating frequency. RFL is optimized for cellular-band operation. RFH is opti- mized for PCS operation. The PA drivers have open-col- lector outputs and require pullup inductors ...
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... IF VCO frequency = f REF where f is the external reference frequency. REF The operational control register (OPCTRL) controls the state of the MAX2369. See Table 3 each bit. The configuration register (CONFIG) sets the configura- tion for the IF PLL and the baseband I/Q input levels MSB ...
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... CTRL Figure 2. MAX2369 Typical Application Circuit ______________________________________________________________________________________ Complete Dual-Band Quadrature Transmitter The MAX2369 is designed for use in dual-band, triple- mode systems recommended for triple-mode hand- sets. A typical application circuit is shown in Signal Flow Control Figure 3 3-wire bus is SPI/QSPI/MICROWIRE compatible. FRAC-N PLL ...
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Complete Dual-Band Quadrature Transmitter Table 3. Operation Control Register (OPCTRL) BIT POWER-UP BIT NAME LOCATION STATE (0 = LSB) LO_SEL 1 15 UNUSED 0 14 ICP_MAX 0 13 MODE 01 12, 11 UNUSED 0 10 UNUSED 0 IFG 100 8, ...
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Table 4. Configuration Register (CONFIG) POWER-UP BIT NAME LOCATION STATE (0 = LSB) IF_PLL_SHDN 1 UNUSED 1 UNUSED 0 IQ_LEVEL 1 BUF_DIV 0 VCO_BYPASS 0 ICP 00 UNUSED 00 IF_PD_POL 1 UNUSED 111 UNUSED 1 LD_MODE 1 ...
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Complete Dual-Band Quadrature Transmitter Table 5. Power-Down Modes POWER-DOWN MODES SHDN pin Ultra-low shutdown current TXGATE pin For punctured TX mode IF PLL SHDN For external IF PLL use TX STBY TX is off, but IF LO stays locked REG ...
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... C -R INT n The MAX2369 EV kit can be used as a starting point for layout. For best performance, take into consideration power-supply issues, as well as the RF, LO, and IF lay- out. To minimize coupling between different sections of the IC, the ideal power-supply layout is a star configuration, ...
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... CC TXGATE 7 IFIN+ 8 IFIN- 9 N. BIAS For the latest package outline information www.maxim-ic.com/packages. Printed USA is a registered trademark of Maxim Integrated Products. Pin Configuration REF 36 N. N.C. N.C. 32 TANK + 31 MAX2369 30 TANK - IFLO SHDN QFN-EP Package Information ...