HomedatasheetCC1070/TR

CC1070/TR Datasheet

a True Single-chip, Low-power, Low-cost CMOS FSK/GFSK/ASK/00K RF Transmitter For Narrowband And Multi-channel Applications
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Description

Features, Applications
Single Chip Low Power RF Transmitter for Narrow Band Systems
Applications

Narrow-band low power UHF wireless data transmitters and 915 MHz ISM/SRD band systems TPMS � Tire Pressure Monitoring Systems AMR � Automatic Meter Reading Wireless alarm and security systems Home automation Low power telemetry

is a true single-chip UHF transmitter designed for very low power and very low voltage wireless applications. The circuit is mainly intended for the ISM (Industrial, Scientific and Medical) and SRD (Short Range Device) frequency bands at and 915 MHz, but can easily be programmed for multi-channel operation at other frequencies in the - 470 and - 940 MHz range.

The CC1070 is especially suited for narrowband systems, e.g. with channel widths or 25 kHz complying with ARIB STD T-67 and 300 220. The CC1070 main operating parameters can be programmed via an easy-tointerface serial bus, thus making CC1070 a very flexible and easy to use transmitter. In a typical application CC1070 will be used together with a microcontroller and a few external passive components.

Features

True single chip UHF RF transmitter Frequency range - 470 MHz and - 940 MHz Programmable output power Low supply voltage to 3.6 V) Very few external components required Small size (QFN 20 package) Data rate to 153.6 kBaud ASK, FSK and GFSK data modulation Fully on-chip VCO Programmable frequency make crystal temperature drift compensation possible without TCXO Suitable for frequency hopping systems Complies with 300 220, FCC CFR47 part 15 and ARIB STD T-67 Development kit available Easy-to-use software for generating the CC1070 configuration data

Single Chip Low Power RF Transmitter for Narrow Band Systems....................................................1 Applications........................................................................................................................................1 Product Description............................................................................................................................1 Features.............................................................................................................................................1 Table of Contents...............................................................................................................................2 Absolute Maximum Ratings...............................................................................................................3 Electrical Specifications.....................................................................................................................3 Pin Assignment..................................................................................................................................7 Circuit Description..............................................................................................................................8 Application Circuit..............................................................................................................................8 Configuration Overview....................................................................................................................11 Configuration Software.....................................................................................................................11 Microcontroller Interface...................................................................................................................12 4-wire Serial Configuration Interface................................................................................................13 Signal Interface................................................................................................................................15 Built-in Test Pattern Generator........................................................................................................17 FSK Modulation Formats.................................................................................................................17 OOK/ASK Modulation......................................................................................................................17 Data Rate Programming..................................................................................................................17 Interrupt upon PLL Lock...................................................................................................................18 Interfacing an External PA...............................................................................................................18 General Purpose Output Control Pins..............................................................................................19 Frequency Programming..................................................................................................................19 Dithering...........................................................................................................................................20 VCO, Charge Pump and PLL Loop Filter.........................................................................................20 VCO and PLL Self-Calibration.........................................................................................................21 VCO Current Control........................................................................................................................22 Power Management.........................................................................................................................23 Output Power Programming.............................................................................................................25 Crystal Oscillator..............................................................................................................................26 Output Matching...............................................................................................................................27 Optional LC Filter.............................................................................................................................27 System Considerations and Guidelines...........................................................................................28 PCB Layout Recommendations.......................................................................................................29 Antenna Considerations...................................................................................................................30 Configuration Registers....................................................................................................................30 CC1070 Register Overview..............................................................................................................31 Package Description (QFN 20)........................................................................................................42 Package Thermal Properties............................................................................................................43 Soldering Information.......................................................................................................................43 Tray Specification............................................................................................................................43 Carrier Tape and Reel Specification................................................................................................43 Ordering Information........................................................................................................................43 General Information.........................................................................................................................44 Address Information.........................................................................................................................45

Supply voltage, VDD Voltage on any pin Storage temperature range Reflow soldering temperature

The absolute maximum ratings given above should under no circumstances be violated. Stress exceeding one or more of

Caution! ESD sensitive device. Precaution should be used when handling the device in order to prevent permanent damage.

the limiting values may cause permanent damage to the device.

= 25�C, DVDD = AVDD V if nothing else stated. Crystal frequency = 14.7456 MHz All measurements were performed using the test circuit shown in Figure 3.

RF Frequency Range Operating ambient temperature range Supply voltage

Recommended operation voltage. Note: The same supply voltage should be used for digital (DVDD) and analog (AVDD) power.

Transmit data rate 0.45 153.6 kBaud Data rate is programmable. See "Data rate programming" on page 17 for details. NRZ or Manchester encoding can be used. 153.6 kBaud equals 153.6 kbps using NRZ coding. Binary FSK frequency separation kHz - 470 MHz - 940 MHz The frequency separation is programmable 250 Hz steps. 108/216 kHz is the maximum guaranteed separation at 1.84 MHz reference frequency. Larger separations can be achieved at higher reference frequencies. Output power 433 MHz 868 MHz Delivered to 50 load. The output power is programmable.


Features

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Manufacturer information

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