MAX2900MAX2904 19-2145 Rev 1 8/03 200mW Single-Chip Transmitter ICs for 868MHz/915MHz ISM Bands General Description Features The MAX2900MAX2904 complete single-chip 200mW Versions for U.S. 902MHz to 928MHz Band and transmitters are designed for use in the 868MHz/ European 868MHz Band 915MHz frequency bands. The MAX2900/MAX2901/ -7dBm to +23dBm Adjustable Differential RF MAX2902 are compliant with the FCC CFR47 part 15.247 Output Power 902MHz to 928MHz ISM-band specifications. MAX2903/ +23dBm Output Power at 4.5V, +20dBm Output MAX2904 are compliant with the ETSI EN330-220 speci- Power at 3.0V fication for the European 868MHz ISM band. Support BPSK, OOK, ASK, and FM Modulations These transmitter ICs offer a high level of integration Modulation Filter for Direct Sequence BPSK up to while minimizing the number of external components. 8Mchips/s This is achieved by full integration of the transmit modu- Fully Integrated VCO with On-Chip Tank lator, power amplifier, RF VCO, 8-channel frequency syn- thesizer, and baseband PN sequence lowpass filter. By Extremely Low Frequency Pulling for OOK filtering the BPSK modulation, the spurious emissions are Modulation (typ 60kHz peak, 5kHz RMS) reduced, enabling up to eight independent transmit Integrated Frequency Synthesizer for up to channels in the U.S. ISM band. Inputs are provided for 8 Channels (MAX2900) spread-spectrum BPSK, ASK, and OOK. FM can be +2.7V to +4.5V Supply Operation achieved by directly modulating the VCO. The devices Small 28-Pin QFN Package with Exposed Pad are intended primarily for use with an external differential (5mm 5mm) antenna. Ordering Information Applications PART TEMP RANGE PIN-PACKAGE Automatic Meter Reading MAX2900EGI -40C to +85C 28 QFN-EP* Wireless Security Systems/Alarms MAX2901EGI -40C to +85C 28 QFN-EP* Wireless Sensors MAX2902EGI -40C to +85C 28 QFN-EP* Wireless Data Networks Wireless Building Control MAX2903EGI -40C to +85C 28 QFN-EP* MAX2904EGI -40C to +85C 28 QFN-EP* *Exposed pad Functional Diagrams/Pin Configurations CPOUT VCC5 REFOUT VCC4 REFIN OSC CPOUT VCC5 DIV63 REFOUT VCC4 REFIN OSC D2 28 27 26 25 24 23 22 28 27 26 25 24 23 22 VCO+ D0 21 VTUNE 21 VTUNE 1 1 MAX2901/ MAX2900 MAX2903 D1 2 VCO- 2 20 GND 20 GND 4 CP CP 19 VREG 3 19 N.C. VREG 3 DIVOUT DUAL- 8-CHANNEL REG CHANNEL REG 4 18 GND VCC1 4 18 N.C. VCC1 SYNTHESIZER (/62 OR /63) SYNTHESIZER RF+ RLPF 5 17 RF+ RLPF 5 17 RF- RF- 6 16 6 16 EN EN GATE GATE GND 7 15 7 15 GND REFEN REFEN 819101121314 819101121314 MODIN LD MODIN OOKIN VCC2 VASK LD PWRSET VCC3 OOKIN VCC2 VASK PWRSET VCC3 Functional Diagrams/Pin Configurations are continued at end of data sheet. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.200mW Single-Chip Transmitter ICs for 868MHz/915MHz ISM Bands ABSOLUTE MAXIMUM RATINGS V to GND...........................................................-0.3V to +5.0V Operating Temperature Range ...........................-40C to +85C CC Analog/Digital Input Voltage to GND..........-0.3V to (V + 0.3V) Junction Temperature .....................................................+150C CC Analog/Digital Input Current..............................................10A Storage Temperature Range .............................-65C to +150C Continuous Power Dissipation (T = +70C) Lead Temperature (soldering, 10s) .................................+300C A 28-Pin QFN-EP (derate 28.5mW/C above +70C)............2W 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. CAUTION ESD SENSITIVE DEVICE Part Selection Information Five different versions are available. The versions differ The MAX2902 and MAX2904 require an off-chip fre- by their frequency band of operation, and by the synthe- quency synthesizer. The MAX2902 operates in the sizers mode of operation. The MAX2900 has an internal 902MHz 928MHz ISM band and MAX2904 operates in 8-channel synthesizer. the 867MHz870MHz European ISM band. The MAX2901 and MAX2903 are dual-channel versions The MAX2901MAX2904 provide LO outputs to drive a with a selectable internal synthesizer division ratio of 62 receiver and/or an external synthesizer. or 63. The MAX2901 operates in the 902MHz to 928MHz ISM band and the MAX2903 operates in the 867MHz to 870MHz European ISM band. PART FREQUENCY RANGE (MHz) SYNTHESIZER LO OUTPUTS MAX2900EGI 902 to 928 Internal 8 selectable channels No MAX2901EGI 902 to 928 Internal 2 selectable channels Yes MAX2902EGI 902 to 928 Off-chip Yes MAX2903EGI 867 to 870 Internal 2 selectable channels Yes MAX2904EGI 867 to 870 Off-chip Yes DC ELECTRICAL CHARACTERISTICS (V = +2.7V to +4.5V, EN = OOKIN = REFEN = high, T = -40C to +85C. Typical values are at V = +4.5V, T = +25C, unless CC A CC A otherwise noted.) (Note 1) PARAMETER CONDITIONS MIN -3 TYP +3 MAX UNITS Supply Voltage 2.7 4.5 4.5 V V = +4.0V 0.7 10 Shutdown mode: EN = CC A REFEN = low V = +4.5V 60 200 CC Synth mode: OOKIN = low 32 40 (MAX2900/MAX2901/MAX2903 only) Transmit mode with output Supply Current matching optimized for T = -40C A 150 200 +23dBm at +4.5V: PWRSET to +85C mA loaded with 22k resistor Transmit mode with output matching optimized for T = -40C A 110 135 +20dBm at +3.0V: PWRSET to +85C loaded with 22k resistor 2 MAX2900MAX2904