MAX2900, MAX2901, MAX2902, MAX2903, MAX2904 200mW Single-Chip Transmitter ICs for 868MHz/915MHz ISM Bands

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The MAX2900–MAX2904 complete single-chip 200mW transmitters are designed for use in the 868MHz/915MHz frequency bands. The MAX2900/MAX2901/MAX2902 are compliant with the FCC CFR47 part 15.247 902MHz to 928MHz ISM-band specifications. MAX2903/MAX2904 are compliant with the ETSI EN330-220 specification for the European 868MHz ISM band.

These transmitter ICs offer a high level of integration while minimizing the number of external components. This is achieved by full integration of the transmit modulator, power amplifier, RF VCO, 8-channel frequency synthesizer, and baseband PN sequence lowpass filter. By filtering the BPSK modulation, the spurious emissions are reduced, enabling up to eight independent transmit channels in the U.S. ISM band. Inputs are provided for spread-spectrum BPSK, ASK, and OOK. FM can be achieved by directly modulating the VCO. The devices are intended primarily for use with an external differential antenna.

Key Features

Applications/Uses

Versions for U.S. 902MHz to 928MHz Band and European 868MHz Band
-7dBm to +23dBm Adjustable Differential RF Output Power
+23dBm Output Power at 4.5V, +20dBm Output Power at 3.0V
Support BPSK, OOK, ASK, and FM Modulations
Modulation Filter for Direct Sequence BPSK up to 8Mchips/s
Fully Integrated VCO with On-Chip Tank
Extremely Low Frequency Pulling for OOK Modulation (typ 60kHz peak, 5kHz RMS)
Integrated Frequency Synthesizer for up to 8 Channels (MAX2900)
+2.7V to +4.5V Supply Operation
Small 28-Pin QFN Package with Exposed Pad (5mm x 5mm)

	Automatic Meter Reading
	Wireless Building Control
	Wireless Data Networks
	Wireless Security Systems/Alarms
	Wireless Sensors

Key Specifications: Transmit System ICs

Part Number

Min. Frequency (MHz)

Max. Frequency (MHz)

Features

Footprint (mm x mm)

Package

Price^**

MAX2900

902

928

•	+23dBm Output Power at 4.5V, +20dBm at 3.0V

•	Integrated Frequency Synthesizer For Up to 8 Channels

•	Integrated VCO with On-Chip Tank

•	Supports Spread-Spectrum BPSK, ASK, OOK, and FM

5.0 x 5.0

QFN/28
THIN QFN/28

$3.34 @ 1k

MAX2901

902

928

•	+23dBm Output Power at 4.5V, +20dBm at 3.0V

•	Integrated Frequency Synthesizer For Up to 2 Channels

•	Integrated VCO with On-Chip Tank

•	Supports Spread-Spectrum BPSK, ASK, OOK, and FM

$3.34 @ 1k

MAX2902

902

928

•	+23dBm Output Power at 4.5V, +20dBm at 3.0V

•	Integrated VCO with On-Chip Tank

•	Off-Chip Synthesizer

•	Supports Spread-Spectrum BPSK, ASK, OOK, and FM

$3.20 @ 1k

MAX2903

867

870

•	+23dBm Output Power at 4.5V, +20dBm at 3.0V

•	Integrated Frequency Synthesizer For Up to 2 Channels

•	Integrated VCO with On-Chip Tank

•	Supports Spread-Spectrum BPSK, ASK, OOK, and FM

$3.34 @ 1k

MAX2904

867

870

•	+23dBm Output Power at 4.5V, +20dBm at 3.0V

•	Integrated VCO with On-Chip Tank

•	Off-Chip Synthesizer

•	Supports Spread-Spectrum BPSK, ASK, OOK, and FM

$3.20 @ 1k

See All Transmit System ICs (19)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.