max2370 Maxim Integrated Products, Inc., max2370 Datasheet
max2370
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max2370 Summary of contents
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... SPI™/QSPI™/MICROWIRE™- compatible, 3-wire programmable bus complete the basic functional blocks of this IC. The MAX2370 is available in a 48-pin TQFN package with exposed paddle and is specified for the extended temperature range (-40°C to +85°C). 450MHz CDMA/WCDMA Phones ® ...
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Complete 450MHz Quadrature Transmitter ABSOLUTE MAXIMUM RATINGS V , RFOUT CCIFCP CCRFCP V to GND.................................................-0.3V to +3.6V CCDRV CS, GC, SHDN, TXGATE, IDLE, DI, SCLK, LOCK to GND.........................................-0. Input Pins (IFIN_, Q_, ...
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... Complete 450MHz Quadrature Transmitter AC ELECTRICAL CHARACTERISTICS = +2.7V to +3.3V, SHDN = IDLE = TXGATE = high, V (MAX2370 EV kit SHDN = IDLE = TXGATE = CS = 3.0V, f +85°C. Typical values are at V CC_ f = 455MHz 120MHz, registers set according to Table 1, input voltage at I and Q = 130mV RFOUT IF cascade specifications assume 400Ω IF filter with 5dB insertion loss, T ...
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... Complete 450MHz Quadrature Transmitter AC ELECTRICAL CHARACTERISTICS (continued) = +2.7V to +3.3V, SHDN = IDLE = TXGATE = high, V (MAX2370 EV kit SHDN = IDLE = TXGATE = CS = 3.0V, f +85°C. Typical values are at V CC_ f = 455MHz 120MHz, registers set according to Table 1, input voltage at I and Q = 130mV RFOUT IF cascade specifications assume 400Ω IF filter with 5dB insertion loss, T ...
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... Complete 450MHz Quadrature Transmitter = SHDN = IDLE = TXGATE = CS = 3.0V, f (MAX2370 EV kit, V CC_ 455MHz 120MHz 10kΩ BIAS T = +25°C, unless otherwise noted OUTPUT POWER AND SUPPLY CURRENT vs. GAIN-CONTROL VOLTAGE MAX2370 toc01 20 170 0 150 POWER -20 130 CURRENT -40 110 -60 -80 -100 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 V (V) ...
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... Complete 450MHz Quadrature Transmitter = SHDN = IDLE = TXGATE = CS = 3.0V, f (MAX2370 EV kit, V CC_ 455MHz 120MHz 10kΩ BIAS +25°C, unless otherwise noted OUTPUT SPECTRUM +8dBm OUT 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 CENTER: 455MHz, SPAN: 5MHz, RBW: 30kHz PIN NAME Transmitter RF Output ...
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Complete 450MHz Quadrature Transmitter PIN NAME CMOS Inputs from the 3-Wire Serial Bus (SPI/QSPI/MICROWIRE Compatible). A small RC CLK, DI, CS 13, 14, 15 lowpass filter on each of these pins can be used to reduce noise on these lines. ...
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... Ground Connection. Solder the exposed paddle (EP) evenly to the board’s ground plane for GND EP proper operation. Detailed Description The MAX2370 complete quadrature transmitter accepts differential I/Q baseband inputs with external common- mode bias. A modulator upconverts the baseband inputs to a 95MHz to 195MHz IF frequency. A gain-con- trol voltage pin (GC) controls the gain of both the IF and RF VGAs simultaneously to achieve the best current consumption and linearity performance ...
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... REF The operational control register (OPCTRL) controls the state of the MAX2370. See Table 2 for a description of each bit’s function. The configuration register (CONFIG) sets the configura- tion for the RF and IF PLL and the baseband I/Q input levels. See Table 3 for a description of each bit’ ...
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... Make sure there is no solder flux under the varactor or loop filter and use low-leakage capacitors. Layout Considerations The MAX2370 EV kit can be used as a starting point for layout. For best performance, take into consideration power-supply issues as well as RF, LO, and IF layout. Power-Supply Layout ...
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Complete 450MHz Quadrature Transmitter MSB B19 RFM-DIVIDE REGISTER X RFR-DIVIDE REGISTER X IFM-DIVIDE REGISTER X IFR-DIVIDE REGISTER X CONTROL REGISTER X CONFIGURATION REGISTER X CURRENT-CONTROL REGISTER X TEST REGISTER X Figure 1. Register Configuration ______________________________________________________________________________________ 24-BIT REGISTER DATA 20 BITS ...
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Complete 450MHz Quadrature Transmitter Table 1. Register Settings for Typical Operation TYPICAL REGISTER NAME SETTINGS RFM[17:0] 23000 DEC RFR[12:0] 384 DEC IFM[13:0] 4800 DEC IFR[10:0] 384 DEC OPCTRL[15:0] 090F hex CONFIG[15:0] D03F hex I CTRL[15:0] 0C38 CC hex TEST[8:0] 100 ...
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Complete 450MHz Quadrature Transmitter Table 2. Operation Control Register (OPCTRL, Address: 0100 BIT BIT NAME LOCATION (0 = LSB) RESERVED 15 RCP_TURBO1 14 ICP_MAX 13 RESERVED 12, 11 RESERVED 10, 9 IFG RESERVED 5 BUF_EN 4 MOD_TYPE ...
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Complete 450MHz Quadrature Transmitter Table 3. Configuration Register (CONFIG, Address: 0101 BIT BIT NAME LOCATION (0 = LSB) IF_PLL_SHDN 15 RF_PLL_SHDN 14 RESERVED 13 IQ_LEVEL 12 RESERVED 11, 10 ICP 9, 8 RCP 7, 6 RESERVED 5, 4 IF_TURBO_CHARGE 3 ...
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Complete 450MHz Quadrature Transmitter Table 5. Typical Current Scale Factors Set By I_MULT Bits BIT NAME BITS 0011 0100 0101 0110 0111 I_MULT 1000 (default) 1001 1010 1011 1100 Table 7. RF Turbo Charge-Pump Current Setting RCP_TURBO1 RCP_TURBO2 0 0 ...
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... PA DUPLEXER V CC 51kΩ LOCK V CC 100pF IDLE V CC 100pF TXGATE 100pF 100pF 400Ω 120MHz 100nH BPF 9.1pF 9.1pF Figure 2. MAX2370 Typical Application Circuit 16 ______________________________________________________________________________________ MAX2335 RX RECEIVER /2 RF VCO 100pF 100pF 100pF RFOUT 1 N.C. RF PLL IF PLL 2 LOCK ...
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Complete 450MHz Quadrature Transmitter B19 (MSB) B18 DI CLK Figure 3. 3-Wire Interface Timing Diagram ______________________________________________________________________________________ CWL CWH t > 50ns CS A0 (LSB) t > 10ns CH t > ...
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Complete 450MHz Quadrature Transmitter (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.) D D/2 18 ______________________________________________________________________________________ k E/2 (NE- DETAIL A e ...
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... Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 19 © 2005 Maxim Integrated Products Package Information (continued) Printed USA is a registered trademark of Maxim Integrated Products, Inc. DALLAS SEMICONDUCTOR PROPRIETARY INFORMATION TITLE: PACKAGE OUTLINE 32, 44, 48, 56L THIN QFN, 7x7x0 ...