DATASHEET
AX5031
Version 1.3
2
Document
Document
Document
Product
Type
Status
Version
Datasheet
Version 1.3
AX5031
Version 1.3
Datasheet AX5031
Table of Contents
3
Table of Contents
1.
Overview .................................................................................................................................... 5
1.1. Features ........................................................................................................................................... 5
1.2. Applications .................................................................................................................................... 5
2.
3.
Block Diagram ........................................................................................................................... 6
Pin Function Descriptions .......................................................................................................... 7
3.1. Pin List ............................................................................................................................................... 7
3.2. Pinout Drawing ............................................................................................................................... 8
4.
Specifications ............................................................................................................................ 9
4.1. Absolute Maximum Ratings .......................................................................................................... 9
4.2. DC Characteristics ....................................................................................................................... 10
Supplies .......................................................................................................................................... 10
Logic ............................................................................................................................................... 11
4.3. AC Characteristics ....................................................................................................................... 12
Crystal Oscillator ........................................................................................................................... 12
RF Frequency Generation Subsystem (Synthesizer) ................................................................ 13
Transmitter...................................................................................................................................... 14
SPI Timing........................................................................................................................................ 15
5.
Circuit Description ................................................................................................................... 16
5.1. Voltage Regulator ....................................................................................................................... 17
5.2. Crystal Oscillator........................................................................................................................... 17
5.3. SYSCLK Output.............................................................................................................................. 18
5.4. Power-on-reset (POR) .................................................................................................................. 18
5.5. RF Frequency Generation Subsystem....................................................................................... 18
VCO ................................................................................................................................................ 19
VCO Auto-Ranging ...................................................................................................................... 19
Loop Filter and Charge Pump .................................................................................................... 19
Version 1.3
Datasheet AX5031
4
Table of Contents
Registers ......................................................................................................................................... 19
5.6. RF Output Stage (ANTP/ANTN)................................................................................................... 20
5.7. Encoder ......................................................................................................................................... 20
5.8. Framing and FIFO ......................................................................................................................... 21
HDLC Mode ................................................................................................................................... 22
RAW Mode..................................................................................................................................... 22
802.15.4 (ZigBee)........................................................................................................................... 22
5.9. Modulator...................................................................................................................................... 23
5.10.
5.11.
PWRMODE Register ................................................................................................................ 24
Serial Peripheral Interface (SPI) ............................................................................................ 25
SPI Timing........................................................................................................................................ 25
6.
Register Bank Description ....................................................................................................... 26
6.1. Control Register Map................................................................................................................... 27
7.
Application Information.......................................................................................................... 30
7.1. Typical Application Diagram ..................................................................................................... 30
7.2. Antenna Interface Circuitry........................................................................................................ 31
Single-Ended Antenna Interface ............................................................................................... 31
7.3. Voltage Regulator ....................................................................................................................... 31
8.
QFN20 Package Information .................................................................................................. 32
8.1. Package Outline QFN20 ............................................................................................................. 32
8.2. QFN Soldering Profile ................................................................................................................... 33
8.3. QFN Recommended Pad Layout.............................................................................................. 34
8.4. Assembly Process ......................................................................................................................... 34
Stencil Design & Solder Paste Application ............................................................................... 34
9.
Life Support Applications ........................................................................................................ 36
10. Contact Information................................................................................................................ 37
Version 1.3
Datasheet AX5031
Table of Contents
5
1. Overview
1.1.
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QFN20 package
Supply voltage range 2.2V - 3.6V
Internal power-on-reset
32 byte data FIFO
Programmable Cyclic Redundancy
Check (CRC-CCITT, CRC-16, CRC-
32)
Optional spectral shaping using a
self synchronizing shift register
Brown-out detection
Differential antenna pins
Dual frequency registers
Internally generated coding for
forward Viterbi error correction
Software compatible to AX5051
Features
Advanced multi-channel single
chip UHF transmitter
Configurable for usage in 400-470
MHz and 800-940 MHz SRD bands
-5 dBm to +15 dBm programmable
output
17 mA @ 0 dBm, 868 MHz
30 mA @ 10 dBm, 868 MHz
46 mA @ 14.5 dBm, 868 MHz
Wide variety of shaped
modulations supported (ASK, PSK,
OQPSK, MSK, FSK, GFSK, 4-FSK)
Data rates from 0.1 to 200 kbps
(FSK, MSK, GFSK; 4-FSK) and to 2000
kbps (ASK, PSK)
Ultra fast settling RF frequency
synthesizer for low-power
consumption
802.15.4 compatible
RF carrier frequency and FSK
deviation programmable in 1 Hz
steps
Fully integrated RF frequency
synthesizer with VCO auto-ranging
and band-width boost modes for
fast locking
Few external components
On chip communication controller
and flexible digital modulator
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1.2.
Applications
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400-470 MHz and 800-940 MHz data
transmission in the Short Range Devices
(SRD) band.
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Telemetric applications, sensor
readout
Toys
Wireless audio
Wireless networks
Wireless USB
Access control
Remote keyless entry
ARIB compatible
Pointing devices and keyboards
Active RFID
RFID base station transmitter
433/868/915 MHz SRD band
systems
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Channel hopping 2000 hops/s
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Crystal oscillator with
programmable transconductance
and programmable internal tuning
capacitors for low cost crystals
SPI micro-controller interface
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Version 1.3
Datasheet AX5031
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