MAX7049 Datasheet, PDF (1/51 Pages) Maxim Integrated Products – High-Performance, 288MHz to 945MHz ASK/FSK ISM Transmitter

19-5867; Rev 0; 6/11
EVALUATION KIT AVAILABLE
MAX7049
High-Performance, 288MHz to 945MHz
ASK /FSK ISM Transmitter
General Description
The MAX7049 high-performance, single-chip, ultra-
low-power ASK /FSK UHF transmitter operates in the
industrial, scientific, medical (ISM) band at 288MHz to
945MHz carrier frequencies. The IC also includes a low
phase noise fractional-N synthesizer for precise tuning,
fast frequency agility, and low out-of-band power. To
support narrow-band applications, the IC has both
amplitude-shaping and frequency-shaping functions that
enable the user to optimize spectral efficiency. The IC
offers Tx power up to +15dBm. These features make the
transmitter ideally suited for long-range applications.
Additional system-level features of the IC include a digital
temperature sensor and a number of flexible GPOs for
monitoring radio status and for the control of external
functions. A complete transmitter system can be built
using a low-end microprocessor control unit (MCU), the
IC, a crystal, and a small number of passive components.
The IC is available in a small, 5mm x 5mm, 28-pin TQFN
package with an exposed pad. It is specified to operate
in the -40°C to +125°C automotive temperature range.
Applications
Automatic Meter Reading (AMR)
RF Modules
Long-Range, One-Way Remote Keyless Entry (RKE)
Wireless Sensor Networks
TPMS
Home Security
Home Automation
RFID
Remote Controls
Benefits and Features
S Transmitter (Tx)
 Provides Long Transmit Range Up to +15dBm
 21mA Tx Current for +10dBm Tx Power*
 41mA Tx Current for +15dBm Tx Power*
 Modulation Shaping, ASK, FSK
S General
 Delivers Long Battery Life
< 50nA Shutdown Current
< 350nA Sleep Current
 Minimizes the Number of I/Os Required
Between the IC and the MCU Serial Peripheral
Interface (SPI™)
 Regulatory Compliant
FCC Part 15 Frequency Hopping
ETSI EN300-220 Compatible
 On-Chip Temperature Sensor
 Fast Fractional-N Synthesizer with a
User-Defined External Loop Filter
*V_DD = 3.0V. Includes losses for the matching network and
regulatory-compliant harmonic filter.
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part,
refer to www.maxim-ic.com/MAX7049.related.
SPI is a trademark of Motorola, Inc.
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For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.