Rainbow-electronics RF12 User Manual download pdf

RF12

RF12 Universal ISM Band

FSK Transceiver

RF12

DESCRIPTION

Hope’s RF12 is a single chip, low power, multi-channel

FSK transceiver designed for use in applications requiring

FCC or ETSI conformance for unlicensed use in the 315, 433,

868 and 915 MHz bands. The RF12 transceiver produces a

flexible, low cost, and highly integrated solution that does not

require production alignments. The chip is a complete analog

RF and baseband transceiver including a multi-band PLL

synthesizer with PA, LNA, I/Q down converter mixers,

baseband filters and amplifiers, and an I/Q demodulator. All

required RF functions are integrated. Only an external crystal and bypass filtering are needed for

operation.

The RF12 features a completely integrated PLL for easy RF design, and its rapid settling time allows

for fast frequency-hopping, bypassing multi-path fading and interference to achieve robust wireless links.

The PLL’s high resolution allows the usage of multiple channels in any of the bands. The receiver

baseband bandwidth (BW) is programmable to accommodate various deviation, data rate and crystal

tolerance requirements. The transceiver employs the Zero-IF approach with I/Q demodulation.

Consequently, no external components (except crystal and decoupling) are needed in most applications.

The RF12 dramatically reduces the load on the microcontroller with the integrated digital data

processing features: data filtering, clock recovery, data pattern recognition, integrated FIFO and TX data

crystal. To minimize the system cost, the RF12 can provide a clock signal for the microcontroller, avoiding

the need for two crystals.

For low power applications, the RF12 supports low duty cycle operation based on the internal

wake-up timer.

Tel: +86-755-86096587 Fax: +86-755-86096602 E-mail: [email protected] http://www.hoperf.com

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Summary of Contents

Page 1 - FSK Transceiver

RF12 RF12 Universal ISM Band FSK Transceiver RF12 DESCRIPTION Hope’s RF12 is a single chip, low p

Page 2 - TYPICAL APPLICATIONS

RF12 Tel: +86-755-86096587 Fax: +86-755-86096602 E-mail: [email protected] http://www.hoperf.com

Page 3 - Baseband Filters

RF12 Tel: +86-755-86096587 Fax: +86-755-86096602 E-mail: [email protected] http://www.hoperf.com

Page 4 - Data Validity Blocks

RF12 Tel: +86-755-86096587 Fax: +86-755-86096602 E-mail: [email protected] http://www.hoperf.com

Page 5 - Interface and Controller

RF12 Timing Diagram Control Commands Control Command Related Parameters/Functions Rel

Page 6 - PACKAGE PIN DEFINITIONS

RF12 14 Low Battery Detector and Microcontroller Clock Divider Command LBD voltage and microcont

Page 7 - Typical Application

RF12 Logic connections between power control bits: 3. Frequency Setting Command bit 15 14 13 12

Page 8 - ELECTRICAL SPECIFICATION

RF12 4. Data Rate Command bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 POR 1 1 0 0 0 1 1 0

Page 9

RF12 Bits 7-5 (i2 to i0): Receiver baseband bandwidth (BW) select: i2 i1 i0 BW [kHz] 0

Page 10

RF12 Bits 2-0 (f2 to f0): DQD threshold parameter. Note: To let the DQD report "good signa

Page 11

RF12 Note: The transceiver is in receive (RX) mode when bit er is set using the Power Management

Page 12 - CONTROL INTERFACE

RF12 Tel: +86-755-86096587 Fax: +86-755-86096602 E-mail: [email protected] http://www.hoperf.com

Page 13 - Control Commands

RF12 Note: Lock bit is high when the AFC loop is locked, f same bit indicates when two subsequent

Page 14

RF12 10. TX Configuration Control Command bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 P

Page 15

RF12 12. Wake-Up Timer Command bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 POR 1 1 1 r4

Page 16

RF12 1 0 0 2.5 1 0 1 3.33 1 1 0 5 1 1 1 10 The low battery detector and the clock output can be en

Page 17

RF12 TX REGISTER BUFFERED DATA TRANSMISSION In this operating mode (enabled by bit el, the Configu

Page 18

RF12 RX FIFO BUFFERED DATA READ In this operating mode, incoming data are clocked into a 16 bit

Page 19

RF12 allowable local oscillator frequency error. Whenever a low frequency error is essential for

Page 20

RF12 REFERENCE DESIGNS Schematic PCB layout Top view Bottom view Tel: +86-755-860

Page 21

RF12 SGS Reports Tel: +86-755-86096587 Fax: +86-755-86096602 E-mail: [email protected] http

Page 22

RF12 Tel: +86-755-86096587 Fax: +86-755-86096602 E-mail: [email protected] http://www.hop

Page 23

RF12 DETAILED FEATURE-LEVEL DESCRIPTION The RF12 FSK transceiver is designed to cover the unlice

Page 24

RF12 RF12 BONDING DIAGRAM Pad Opening: 85um square, except 76um octagon pads (AN1, AN2) Die S

Page 25 - RX FIFO BUFFERED DATA READ

RF12 Tel: +86-755-86096587 Fax: +86-755-86096602 E-mail: [email protected] http://www.hoperf.com

Page 26 - RX-TX ALIGNMENT PROCEDURES

RF12 Data Filtering and Clock Recovery Output data filtering can be completed by an external cap

Page 27 - REFERENCE DESIGNS

RF12 Tel: +86-755-86096587 Fax: +86-755-86096602 E-mail: [email protected] http://www.hoperf.com

Page 28 - SGS Reports

RF12 PACKAGE PIN DEFINITIONS Pin type key: D=digital, A=analog, S=supply, I=input, O=output,

Page 29

RF12 8 CLK DO Microcontroller clock output XTL AIO Crystal connection (the other terminal

Page 30 - RF12 BONDING DIAGRAM

RF12 Tel: +86-755-86096587 Fax: +86-755-86096602 E-mail: [email protected] http://www.hoperf.com

Page 31

RF12 Tel: +86-755-86096587 Fax: +86-755-86096602 E-mail: [email protected] http://www.hoperf.com

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Rainbow-electronics RF12 User Manual

Browse online or download User Manual for Wireless Headsets Rainbow-electronics RF12. Rainbow Electronics RF12 User Manual

Summary of Contents

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