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Part: MAX2306
Category:
Communication
-> Wireless
Description: MAX2306, MAX2308, MAX2309 Cdma if Vgas And I/q Demodulators With Vco And Synthesizer
Company: Maxim Integrated Products
Datasheet: Download MAX2306 datasheet File size : 217 kB
Request For quote: Find where to buy MAX2306
Datasheet text preview:
19-2014; Rev 2; 7/01
ILABLE N KIT AVA VALUATIO E
CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer
General Description
T h e MAX2306/MAX2308/MAX2309 are IF receivers designed for dual-band, dual-mode, and single-mode N-CDMA and W-CDMA cellular phone systems. The signal path consists of a variable-gain amplifier (VGA) and I/Q demodulator. The devices feature guaranteed +2.7V operation, a gain control range of over 110dB, and high input IP3 (-31dBm at 35dB gain, 3.4dBm at -35dB gain). Unlike similar devices, the MAX2306 family of receivers includes dual oscillators and synthesizers to form a self-contained IF subsystem. The synthesizer's reference and RF dividers are fully programmable through a 3-wire serial bus, enabling dual-band system architectures using any common reference and IF frequency. The differential baseband outputs have enough bandwidth to suit both N-CDMA and W-CDMA systems, and offer saturated output levels of 2.7Vp-p at a low +2.75V supply voltage. Including the low-noise voltage-controlled oscillator (VCO) and synthesizer, the MAX2306 draws only 26mA from a +2.75V supply in CDMA (differential IF) mode. The MAX2306/MAX2308/MAX2309 are available in 28pin QFN packages.
Features
o Complete IF Subsystem Includes VCO and Synthesizer o Supports Dual-Band, Triple-Mode Operation o VGA with >110dB Gain Control o Quadrature Demodulator o High Output Level (2.7V) o Programmable Charge-Pump Current o Supports Any IF Frequency Between 40MHz and 300MHz o 3-Wire Programmable Interface o Low Supply Voltage (+2.7V)
MAX2306/MAX2308/MAX2309
Ordering Information
PART MAX2306EGI MAX2308EGI MAX2309EGI TEMP. RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C PIN-PACKAGE 28 QFN-EP* 28 QFN-EP* 28 QFN-EP*
Applications
Single/Dual/Triple-Mode CDMA Handsets Globalstar Dual-Mode Handsets Wireless Data Links W-CDMA Handsets Wireless Local Loop (WLL)
*Exposed paddle Pin Configurations appear at end of data sheet. Block Diagram appears at end of data sheet.
Selector Guide
PART MODE AMPS, Cellular CDMA, PCS CDMA AMPS, Cellular CDMA, PCS CDMA External AMPS, Cellular CDMA, PCS CDMA DESCRIPTION Dual Band, Triple Mode with Two IF VCOs INPUT RANGE
MAX2306
40MHz to 300MHz
MAX2308
Dual Band, Triple Mode with Common IF VCO
70MHz to 300MHz
MAX2309
Dual Band, Triple Mode (Drives External AMPS Discriminator)
70MHz to 300MHz
________________________________________________________________ Maxim Integrated Products
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For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer MAX2306/MAX2308/MAX2309
ABSOLUTE MAXIMUM RATINGS
VCC to GND ..-0.3V to +6.0V SHDN to GND............-0.3V to (VCC + 0.3V) STBY, BUFEN, MODE, EN, DATA, CLK, DIVSEL ..........-0.3V to (VCC + 0.3V) VGC to GND......-0.3V, the lesser of +4.2V or (VCC + 0.3V) AC Signals TANKH ±, TANKL ±, REF, FM ±, CDMA ± .......1.0V peak Digital Input Current SHDN, MODE, DIVSEL, BUFEN, DATA, CLK, EN, STBY ....±10mA Continuous Power Dissipation (TA = +70°C) 28-Pin QFN (derate 28.5mW/°C above TA = +70°C)..2W Operating Temperature Range ...-40°C to +85°C Junction Temperature ......+150°C Storage Temperature Range .....-65°C to +160°C Lead Temperature (soldering, 10s) .........+300°C
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
(VCC = +2.7V to +3.6V, MODE = DIVSEL = SHDN = STBY = BUFEN = high, differential output load = 10k, TA = -40°C to +85°C, registers set to default power-up settings. Typical values are at VCC = +2.75V and TA = +25°C, unless otherwise noted.)
PARAMETER SYMBOL CDMA mode FM_IQ mode Supply Current (Note 1) FM_I mode STANDBY (VCO_H) STANDBY (VCO_L) CONDITIONS TA = +25°C TA = -40°C to +85°C TA = +25°C TA = -40°C to +85°C TA = +25°C TA = -40°C to +85°C TA = +25°C TA = -40°C to +85°C TA = +25°C TA = -40°C to +85°C 3.5 1.5 4 2.0 0.5 IIH IIL 0.5V < VVGC < 2.3V SHDN = low 47k load 47k load I+ to I- and Q+ to Q-, PLL locked VCC = +2.75V -20 ±1.5 VCC - 1.4 2.0 0.5 +20 -5 2 2 5 1 10 5.8 µA mA V V µA µA µA µA V V mV V 11.4 12.3 24.7 25.4 MIN TYP 25.9 MAX 37.5 41.5 36.7 40.6 35.7 39.5 18.8 20.7 18.4 20.3 mA UNITS
ICC
Addition for LO out (BUFEN = low) Shutdown Current Register Shutdown Current Logic High Logic Low Logic High Input Current Logic Low Input Current VGC Control Input Current VGC Control Input Current During Shutdown Lock Indicator High (locked) Lock Indicator Low (unlocked) DC Offset Voltage Common-Mode Output Voltage ICC ICC SHDN = low
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CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer
AC ELECTRICAL CHARACTERISTICS
(MAX2306/MAX2308/MAX2309 EV kit, VCC = +2.75V, registers set to default power-up states except M1 = M2 = 306, R1 = R2 = 16, fIN = 183.7MHz, fREF = 19.2MHz, 0.6Vp-p synthesizer locked with passive 3rd-order lead-lag loop filter, SHDN = high, VGC set for +35dB voltage gain, differential output load = 10k, all power levels referred to 50, TA = +25°C, unless otherwise noted.)
PARAMETER Input Frequency Reference Frequency Frequency Reference Signal Level SIGNAL PATH, CDMA MODE Gain = -35dB, (Note 3) Input 3rd-Order Intercept IIP3 Gain = +35dB, TA = -40°C to +85°C (Notes 4, 5) Gain = -35dB Gain = +35dB (Note 6) AV AV NF Gain = -35dB Gain = +35dB 57 -38 -9 -44 -14.8 -49 -56 61 62.9 6.36 -6.5 -40.2 -20 -44 -56.7 56 59.5 ±2.5 4.2 TA = -40°C to +85°C (Note 5) V SAT FVCO_L FVCO_H PLO M1, M2 M1, M2 R1, R2 16383 2 Differential (Note 2) (Note 2) RL = 50, BUFEN = low 80 135 -13.7 256 28 40 1 2.7 300 600 -52 -32 dBm -51 3.4 -31.0 dBm SYMBOL fIN fREF V REF 0.2 (Note 2) CONDITIONS MIN 40 TYP MAX 300 39 UNITS MHz MHz Vp-p
MAX2306/MAX2308/MAX2309
Input 1dB Compression Input 0.25dB Desensitization Minimum Voltage Gain Maximum Voltage Gain DSB Noise Figure SIGNAL PATH, FM_IQ MODE
P 1dB
dBm dBm dB dB dBm
VVGC = 0.5V (Note 5) VVGC = 2.3V (Note 5) Gain = -35dB Gain = +35dB Gain = -35dB, (Note 7)
Input 3rd-Order Intercept
IIP3
Gain = +35dB, TA = -40°C to +85°C (Notes 5, 8) Gain = -35dB Gain = +35dB VVGC = 0.5V (Note 5) VVGC = 2.3V (Note 5) Normalized to +25°C
Input 1dB Compression Minimum Voltage Gain Maximum Voltage Gain Gain Variation Over Temperature Baseband 0.5dB Bandwidth Quadrature Suppression LO to Baseband Leakage Saturated Output Level PHASE-LOCKED LOOP VCO Tune Range LO_OUT Output Power VCO Minimum Divide Ratio VCO Maximum Divide Ratio REF Minimum Divide Ratio
P 1dB AV AV
dBm dB dB dB MHz dB mVp-p Vp-p
SIGNAL PATH, CDMA AND FM_IQ MODE
MHz dBm
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