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SX1208 반도체 회로 부품 판매점

Low Power Integrated UHF Transceiver



Semtech 로고
Semtech
SX1208 데이터시트, 핀배열, 회로
SX1208
WIRELESS, SENSING & TIMING
SX1208 Transceiver
Low Power Integrated UHF Transceiver
DATASHEET
RFIO
VBAT1&2
VR_ANA
VR_DIG
Power Distribution System
LNA

Single to
Mixers
Modulators
Differential
RC
Oscillator
GND
VR_PA
PA_BOOST
PA0
Ramp &
Control
PA1&2
Tank
Inductor
Loop
Filter
Division by
2, 4 or 6
Frac-N PLL
Synthesizer
XO
32 MHz
XTAL
RSSI
AFC
GND
RESET
SPI
RXTX
DIO0
DIO1
DIO2
DIO3
DIO4
DIO5
GENERAL DESCRIPTION
The SX1208 is a highly integrated RF transceiver capable of
operation from 290MHz to 510MHz, including the 315 and
434 MHz license-free ISM (Industry Scientific and Medical)
frequency bands. Its highly integrated architecture allows for
a minimum of external components whilst maintaining
maximum design flexibility. All major RF communication
parameters are programmable and most of them can be
dynamically set. The SX1208 offers the unique advantage
of programmable narrow-band and wide-band
communication modes without the need to modify external
components. The SX1208 is optimized for low power
consumption while offering high RF output power and
channelized operation. TrueRF™ technology enables a low-
cost external component count (elimination of the SAW
filter) whilst still satisfying ETSI and FCC regulations.
APPLICATIONS
Automated Meter Reading
Wireless Sensor Networks
Home and Building Automation
Wireless Alarm and Security Systems
Industrial Monitoring and Control
Smoke detectors
KEY PRODUCT FEATURES
High Sensitivity: down to -124 dBm at 600 bps
High Selectivity: 16-tap FIR Channel Filter
Bullet-proof front end: IIP3 = -18 dBm, IIP2 = +35 dBm,
80 dB Blocking Immunity, no Image Frequency response
Low current: Rx = 16 mA, 100nA register retention
Programmable Pout: -18 to +20 dBm in 1dB steps
Constant RF performance over voltage range of chip
FSK Bit rates up to 100 kbps
Fully integrated synthesizer with a resolution of 61 Hz
FSK, GFSK, MSK, GMSK and OOK modulations
Built-in Bit Synchronizer performing Clock Recovery
Incoming Sync Word Recognition
115 dB+ Dynamic Range RSSI
Automatic RF Sense with ultra-fast AFC
Packet engine with CRC, AES-128 and 66-byte FIFO
Built-in temperature sensor and Low Battery indicator
ORDERING INFORMATION
Part Number Package Delivery MOQ / Multiple
MARKETS
Europe: EN 300-220-1
North America: FCC Part 15.249
Korean Narrow bands
SX1208IMLTRT QFN24 Tape& Reel 3000 pieces
Pb-free, Halogen free, RoHS/WEEE compliant product
Temperature range: -40 to +85°C
Rev. 1 - March 2015
©2015 Semtech Corporation
Page 1
www.semtech.com


SX1208 데이터시트, 핀배열, 회로
SX1208
WIRELESS, SENSING & TIMING
Table of contents
Section
DATASHEET
Page
1. General Description..................................................................................................................................................................... 8
1.1. Simplified Block Diagram.................................................................................................................................................... 8
1.2. Pin and Marking Diagram ................................................................................................................................................... 9
1.3. Pin Description .................................................................................................................................................................. 10
2. Electrical Characteristics ........................................................................................................................................................... 11
2.1. ESD Notice ....................................................................................................................................................................... 11
2.2. Absolute Maximum Ratings .............................................................................................................................................. 11
2.3. Operating Range .............................................................................................................................................................. 11
2.4. Chip Specification ............................................................................................................................................................. 12
2.4.1. Power Consumption ..................................................................................................................................................... 12
2.4.2. Frequency Synthesis .................................................................................................................................................... 12
2.4.3. Receiver........................................................................................................................................................................ 13
2.4.4. Transmitter.................................................................................................................................................................... 14
2.4.5. Digital Specification ...................................................................................................................................................... 15
3. Chip Description ........................................................................................................................................................................ 16
3.1. Power Supply Strategy ..................................................................................................................................................... 16
3.2. Low Battery Detector ........................................................................................................................................................ 16
3.3. Frequency Synthesis ........................................................................................................................................................ 16
3.3.1. Reference Oscillator ..................................................................................................................................................... 16
3.3.2. CLKOUT Output ........................................................................................................................................................... 17
3.3.3. PLL Architecture ........................................................................................................................................................... 17
3.3.4. Lock Time ..................................................................................................................................................................... 18
3.3.5. Lock Detect Indicator .................................................................................................................................................... 18
3.4. Transmitter Description ..................................................................................................................................................... 19
3.4.1. Architecture Description................................................................................................................................................ 19
3.4.2. Bit Rate Setting............................................................................................................................................................. 19
3.4.3. FSK Modulation ............................................................................................................................................................ 20
3.4.4. OOK Modulation ........................................................................................................................................................... 20
3.4.5. Modulation Shaping ...................................................................................................................................................... 21
3.4.6. Power Amplifiers........................................................................................................................................................... 21
3.4.7. High Power Settings ..................................................................................................................................................... 22
3.4.8. Output Power Summary ............................................................................................................................................... 22
3.4.9. Over Current Protection................................................................................................................................................ 22
3.5. Receiver Description ......................................................................................................................................................... 23
3.5.1. Block Diagram .............................................................................................................................................................. 23
3.5.2. LNA - Single to Differential Buffer................................................................................................................................. 23
3.5.3. Automatic Gain Control................................................................................................................................................. 24
3.5.4. Continuous-Time DAGC ............................................................................................................................................... 25
3.5.5. Quadrature Mixer - ADCs - Decimators ........................................................................................................................ 26
3.5.6. Channel Filter ............................................................................................................................................................... 26
3.5.7. DC Cancellation............................................................................................................................................................ 27
3.5.8. Complex Filter - OOK ................................................................................................................................................... 27
3.5.9. RSSI ............................................................................................................................................................................. 27
3.5.10. Cordic ......................................................................................................................................................................... 28
3.5.11. FSK Demodulator ....................................................................................................................................................... 29
Rev. 1 - March 2015
©2015 Semtech Corporation
Page 2
www.semtech.com




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