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MAX7032
Low-Cost, Crystal-Based, Programmable, ASK/FSK Transceiver with Fractional-N PLL
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Status
Active: In Production.
Description
The MAX7032 crystal-based, fractional-N transceiver is designed to transmit and receive ASK/OOK or FSK data in the 300MHz to 450MHz frequency range with data rates up to 33kbps (Manchester encoded) or 66kbps (NRZ encoded). This device generates a typical output power of +10dBm into a 50Ω load, and exhibits typical sensitivities of -114dBm for ASK data and -110dBm for FSK data. The MAX7032 features separate transmit and receive pins (PAOUT and LNAIN) and provides an internal RF switch that can be used to connect the transmit and receive pins to a common antenna.
The MAX7032 transmit frequency is generated by a 16-bit, fractional-N, phase-locked loop (PLL), while the receiver's local oscillator (LO) is generated by an integer-N PLL. This hybrid architecture eliminates the need for separate transmit and receive crystal reference oscillators because the fractional-N PLL allows the transmit frequency to be set within 2kHz of the receive frequency. The 12-bit resolution of the fractional-N PLL allows frequency multiplication of the crystal frequency in steps of fXTAL/4096. Retaining the fixed-N PLL for the receiver avoids the higher current drain requirements of a fractional-N PLL and keeps the receiver current drain as low as possible.
The fractional-N architecture of the MAX7032 transmit PLL allows the transmit FSK signal to be programmed for exact frequency deviations, and completely eliminates the problems associated with oscillator-pulling FSK signal generation. All frequency-generation components are integrated on-chip, and only a crystal, a 10.7MHz IF filter, and a few discrete components are required to implement a complete antenna/digital data solution.
The MAX7032 is available in a small 5mm x 5mm, 32-pin, thin QFN package, and is specified to operate in the automotive -40°C to +125°C temperature range.
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Data Sheet
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NOTE: This product uses the following:MAX7032 EVKIT Software
Key Features
- +2.1V to +3.6V or +4.5V to +5.5V Single-Supply Operation
- Single Crystal Transceiver
- User-Adjustable 300MHz to 450MHz Carrier Frequency
- ASK/OOK and FSK Modulation
- User-Adjustable FSK Frequency Deviation Through Fractional-N PLL Register
- Agile Transmitter Frequency Synthesizer with fXTAL/4096 Carrier-Frequency Spacing
- +10dBm Output Power into 50Ω Load
- Integrated TX/RX Switch
- Integrated Transmit and Receive PLL, VCO, and Loop Filter
- > 45dB Image Rejection
- Typical RF Sensitivity*
- ASK: -114dBm
- FSK: -110dBm
- Selectable IF Bandwidth with External Filter
- RSSI Output with High Dynamic Range
- Autopolling Low-Power Management
- < 12.5mA Transmit-Mode Current
- < 6.7mA Receive-Mode Current
- < 23.5µA Polling-Mode Current
- < 800nA Shutdown Current
- Fast-On Startup Feature, < 250µs
- Small 32-Pin, Thin QFN Package
- Underwriters Laboratories (UL) Recognized
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Applications/Uses
- 2-Way Remote Keyless Entry
- Garage Door Openers
- Home Automation
- Local Telemetry Systems
- Remote Controls
- Remote Sensing
- Security Systems
- Smoke Alarms
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Key Specifications:
| ISM RF Transceivers |
| Part Number |
Solutions |
Features |
Applications |
Freq.
(MHz) |
ISUPPLY
(mA) |
Footprint
(mm x mm) |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Industry Qualified |
Budgetary Price |
| max w/pins |
See Notes |
| MAX7032 |
| Automotive | | ISM, RKE, SRD; 315-433.92MHz Bands | | Remote Controls | | Remote Sensing | | Security Systems | | Smoke Alarms |
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| +10dBm Output Power into 50Ω Load | | +2.1V to +3.6V or +4.5V to +5.5V Single-Supply | | > 45dB Image Rejection | | ASK/OOK and FSK Modulation | | Agile Transmitter Frequency Synthesizer | | Autopolling Low-Power Management | | Integrated Tx/Rx Switch | | RSSI Output with High Dynamic Range | | Small, 5x5, 32-Pin, Thin QFN Package | | Typical ASK Sensitivity: -114dBm | | Typical FSK Sensitivity: -110dBm | | User-Adjustable 300MHz to 450MHz Carrier Frequency | | User-Adjustable FSK Frequency Deviation |
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| AMR | | ISM | | Remote Controls | | Remote Sensing | | Security Systems | | Smoke Alarms |
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300 to 450 |
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5.0 x 5.0 |
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26 |
Automotive - General |
$3.50 @1k |
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See All ISM RF Transceivers (9)
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Pricing 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.
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| *0.2% BER, 4kbps Manchester-encoded data, 280kHz IF BW, average RF power |
Diagram
 Typical Application Circuit
Application Notes
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Recommended Replacement |
Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX7032ATJ+
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Active |
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TQFN;32 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0001 (PDF)
Use pkgcode/variation: T3255+3*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX7032ATJ+T
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Active |
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TQFN;32 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0001 (PDF)
Use pkgcode/variation: T3255+3*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX7032ATJ+TWC6L
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Active |
MAX7032ATJ+C6L
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QFN;
Land Pattern: Not Available
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-40°C to +125°C
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See data sheet
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| MAX7032ATJ+WC6L
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Active |
MAX7032ATJ+C6L
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TQFN;32 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0001 (PDF)
Use pkgcode/variation: T3255+3*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX7032EVKIT-315
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Active |
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KIT;
Land Pattern: Not Available
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See data sheet
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| MAX7032EVKIT-433
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Active |
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KIT;
Land Pattern: Not Available
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See data sheet
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| MAX7032EVSYS-315
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Active |
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KIT;
Land Pattern: Not Available
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-40°C to +125°C
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See data sheet
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| MAX7032EVSYS-433
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Active |
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KIT;
Land Pattern: Not Available
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-40°C to +125°C
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See data sheet
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Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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Similar Products by Function
| MAX7030 |
Low-Cost, 315MHz, 345MHz, and 433.92MHz ASK Transceiver with Fractional-N PLL |
| MAX7031 |
Low-Cost, 308MHz, 315MHz, and 433.92MHz FSK Transceiver with Fractional-N PLL |
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Information Index
Document Ref.: 19-3685
Rev 2;
2010-12-03
This page last modified: 2011-06-27
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