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200mW Single-Chip Transmitter ICs for 868MHz/915MHz ISM Bands

Product Details

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

  • 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)

Applications/Uses

  • Automatic Meter Reading
  • Wireless Building Control
  • Wireless Data Networks
  • Wireless Security Systems/Alarms
  • Wireless Sensors
Parametric specs for ISM RF Transmitters < 1GHz
Band/ Freq. (MHz) 867 to 870
Tx Output Power (dBm) (max) -7 to +23
Modulation Mode ASK
BPSK
FM
OOK
VSUPPLY (V) 2.7 to 4.5
Package/Pins TQFN/28
Budgetary
Price (See Notes)
$3.82 @1k
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Simplified Block Diagram

MAX2900: Pin Configuration MAX2900: Pin Configuration Zoom icon

Technical Docs

Design & Development

Click any title below to view the detail page where available.

Description

The MAX2900-MAX2904 evaluation kits (EV kits) simplify testing of the MAX2900-MAX2904. The EV kits allow evaluation of the MAX2900-MAX2904's BPSK, OOK, ASK, and FM modulations; and fully integrated VCO, modulation filter, integrated frequency synthesizer, and power-management features.

The EV kits provide 50Ω SMA connectors for IF inputs and RF outputs. All critical peripheral components are included, and all EV kits are fully assembled and tested.

View Details

Features

  • Single-Supply Operation
  • 50Ω SMA Connectors on all IF and RF Ports
  • Baluns Included for Single-Ended RF Output
  • Easy Evaluation of BPSK, OOK, ASK, and FM Modulations
  • Digital Control Synthesizer Programming (MAX2900)
  • Four Modes of Operation
    • Shutdown
    • Synthesizer
    • Transmit
    • Reference Only

Description

The MAX2900-MAX2904 evaluation kits (EV kits) simplify testing of the MAX2900-MAX2904. The EV kits allow evaluation of the MAX2900-MAX2904's BPSK, OOK, ASK, and FM modulations; and fully integrated VCO, modulation filter, integrated frequency synthesizer, and power-management features.

The EV kits provide 50Ω SMA connectors for IF inputs and RF outputs. All critical peripheral components are included, and all EV kits are fully assembled and tested.

View Details

Features

  • Single-Supply Operation
  • 50Ω SMA Connectors on all IF and RF Ports
  • Baluns Included for Single-Ended RF Output
  • Easy Evaluation of BPSK, OOK, ASK, and FM Modulations
  • Digital Control Synthesizer Programming (MAX2900)
  • Four Modes of Operation
    • Shutdown
    • Synthesizer
    • Transmit
    • Reference Only

Description

The MAX2900-MAX2904 evaluation kits (EV kits) simplify testing of the MAX2900-MAX2904. The EV kits allow evaluation of the MAX2900-MAX2904's BPSK, OOK, ASK, and FM modulations; and fully integrated VCO, modulation filter, integrated frequency synthesizer, and power-management features.

The EV kits provide 50Ω SMA connectors for IF inputs and RF outputs. All critical peripheral components are included, and all EV kits are fully assembled and tested.

View Details

Features

  • Single-Supply Operation
  • 50Ω SMA Connectors on all IF and RF Ports
  • Baluns Included for Single-Ended RF Output
  • Easy Evaluation of BPSK, OOK, ASK, and FM Modulations
  • Digital Control Synthesizer Programming (MAX2900)
  • Four Modes of Operation
    • Shutdown
    • Synthesizer
    • Transmit
    • Reference Only

Description

The MAX2900-MAX2904 evaluation kits (EV kits) simplify testing of the MAX2900-MAX2904. The EV kits allow evaluation of the MAX2900-MAX2904's BPSK, OOK, ASK, and FM modulations; and fully integrated VCO, modulation filter, integrated frequency synthesizer, and power-management features.

The EV kits provide 50Ω SMA connectors for IF inputs and RF outputs. All critical peripheral components are included, and all EV kits are fully assembled and tested.

View Details

Features

  • Single-Supply Operation
  • 50Ω SMA Connectors on all IF and RF Ports
  • Baluns Included for Single-Ended RF Output
  • Easy Evaluation of BPSK, OOK, ASK, and FM Modulations
  • Digital Control Synthesizer Programming (MAX2900)
  • Four Modes of Operation
    • Shutdown
    • Synthesizer
    • Transmit
    • Reference Only

Description

The MAX2900-MAX2904 evaluation kits (EV kits) simplify testing of the MAX2900-MAX2904. The EV kits allow evaluation of the MAX2900-MAX2904's BPSK, OOK, ASK, and FM modulations; and fully integrated VCO, modulation filter, integrated frequency synthesizer, and power-management features.

The EV kits provide 50Ω SMA connectors for IF inputs and RF outputs. All critical peripheral components are included, and all EV kits are fully assembled and tested.

View Details

Features

  • Single-Supply Operation
  • 50Ω SMA Connectors on all IF and RF Ports
  • Baluns Included for Single-Ended RF Output
  • Easy Evaluation of BPSK, OOK, ASK, and FM Modulations
  • Digital Control Synthesizer Programming (MAX2900)
  • Four Modes of Operation
    • Shutdown
    • Synthesizer
    • Transmit
    • Reference Only

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Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal

Parameters

Parametric specs for ISM RF Transmitters < 1GHz
Band/ Freq. (MHz) 867 to 870
Tx Output Power (dBm) (max) -7 to +23
Modulation Mode ASK
BPSK
FM
OOK
VSUPPLY (V) 2.7 to 4.5
Package/Pins TQFN/28
Budgetary
Price (See Notes)
$3.82 @1k

Key Features

  • 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)

Applications/Uses

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

Description

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.

Simplified Block Diagram

MAX2900: Pin Configuration MAX2900: Pin Configuration Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal