NRF2401A

PRODUCT SPECIFICATION Single chip 2.4 GHz Transceiver FEATURES • • • nRF2401A Wireless mouse, keyboard, joystick Keyless entry Wireless data communication Alarm and security systems Home automation Surveillance Automotive Telemetry Intelligent sports equipment Industrial sensors Toys APPLICATIONS • • • • • • • • • • • • • • • True single chip GFSK transceiver in a small 24-pin package (QFN24 5x5mm) Data rate 0 to1Mbps Only 2 external components Multi channel operation • 125 channels • Channel switching time 0 250 1 1000 1000 2524 20 MHz MHz kHz kbps kbps MHz Transmitter operation PRF PRFC PRFCR PBW PRF2 PRF3 IVDD IVDD IVDD IVDD IVDD Maximum Output Power RF Power Control Range RF Power Control Range Resolution 20dB Bandwidth for Modulated Carrier 2nd Adjacent Channel Transmit Power 2MHz 3rd Adjacent Channel Transmit Power 3MHz Supply current @ 0dBm output power Supply current @ -20dBm output power Average Supply current @ -5dBm output power, ShockBurst™ Average Supply current in stand-by mode Average Supply current in power down 4) 16 0 20 +4 ±3 1000 -20 -40 5) 5) 6) 7) 13 8.8 0.8 12 400 dBm dB dB kHz dBm dBm mA mA mA µA nA Receiver operation IVDD IVDD IVDD IVDD RXSENS RXSENS C/ICO C/I1ST C/I2ND C/I3RD RXB 1) 2) 3) 4) 5) 6) 7) 8) Supply current one channel 250kbps Supply current one channel 1000kbps Supply current two channels 250kbps Supply current two channels 1000kbps Sensitivity at 0.1%BER (@250kbps) Sensitivity at 0.1%BER (@1000kbps) C/I Co-channel 1st Adjacent Channel Selectivity C/I 1MHz 2nd Adjacent Channel Selectivity C/I 2MHz 3rd Adjacent Channel Selectivity C/I 3MHz Blocking Data Channel 2 8) 8) 8) 8) 18 19 23 25 -93 -85 10/4 -20/0 -37/-20 -43/-30 -45/-41 mA mA mA mA dBm dBm dB dB dB dB dB Usable band is determined by local regulations The crystal frequency may be chosen from 5 different values (4, 8, 12, 16, and 20MHz) which are specified in the configuration word, see Table 8. 16MHz are required for 1Mbps operation. Data rate must be either 250kbps or 1000kbps. Antenna load impedance = 100Ω+j175Ω Antenna load impedance = 100Ω+j175Ω. Effective data rate 250kbps or 1Mbps. Antenna load impedance = 100Ω+j175Ω. Effective data rate 10kbps. Current if 4 MHz crystal is used. 250kbps/1000kbps. Table 4 nRF2401A RF specifications Nordic Semiconductor ASA Revision: 1.0 - Vestre Rosten 81, N-7075 Tiller, Norway Phone +4772898900 Fax +4772898989 December 2004 Page 4 of 38 PRODUCT SPECIFICATION nRF2401A Single Chip 2.4 GHz Radio Transceiver PACKAGE OUTLINE nRF2401AG uses the GREEN QFN24 5x5 package, with matt tin plating. nRF2401A uses the QFN24 5x5 package, with SnPb plating. Dimensions are in mm. Package Type Punch QFN24 (5x5 mm) Min typ. Max A 0.8 0.9 A1 0.0 0.02 0.05 A2 0.65 0.69 b 0.25 0.3 0.35 D/E 5 BSC D1/E1 4.75 BSC e 0.65 BSC J 3.47 3.57 3.67 K 3.47 3.57 3.67 L 0.3 0.4 0.5 R 1.235 1.335 1.435 Figure 3 nRF2401AG GREEN Package outline. Nordic Semiconductor ASA Revision: 1.0 - Vestre Rosten 81, N-7075 Tiller, Norway Phone +4772898900 - Page 5 of 38 Fax +4772898989 December 2004 PRODUCT SPECIFICATION nRF2401A Single Chip 2.4 GHz Radio Transceiver Absolute Maximum Ratings Supply voltages VDD............................- 0.3V to + 3.6V VSS .................................................. 0V Input voltage VI ....................... - 0.3V to VDD + 0.3V Output voltage VO ...................... - 0.3V to VDD + 0.3V Total Power Dissipation PD (TA=85°C) ............................. 90mW Temperatures Operating Temperature…. - 40°C to + 85°C Storage Temperature….… - 40°C to + 125°C Note: Stress exceeding one or more of the limiting values may cause permanent damage to the device. ATTENTION! Electrostatic Sensitive Device Observe Precaution for handling. Nordic Semiconductor ASA Revision: 1.0 - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Page 6 of 38 Fax +4772898989 December 2004 PRODUCT SPECIFICATION nRF2401A Single Chip 2.4 GHz Radio Transceiver Glossary of Terms Term CLK CRC CS CE DR GFSK ISM MCU OD PWR_DWN PWR_UP RX ST_BY TX Description Clock Cyclic Redundancy Check Chip Select Chip Enable Data Ready Gaussian Frequency Shift Keying Industrial-Scientific-Medical Micro controller Overdrive Power Down Power Up Receive Standby Transmit Table 5 Glossary Nordic Semiconductor ASA Revision: 1.0 - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Page 7 of 38 Fax +4772898989 December 2004 PRODUCT SPECIFICATION nRF2401A Single Chip 2.4 GHz Radio Transceiver MODES OF OPERATION Overview The nRF2401A can be set in the following main modes depending on three control pins: Mode Active (RX/TX) Configuration Stand by Power down PWR_UP 1 1 1 0 CE 1 0 0 X CS 0 1 0 X Table 6 nRF2401A main modes For a complete overview of the nRF2401A I/O pins in the different modes please refer to Table 7. Active modes The nRF2401A has two active (RX/TX) modes: • • ShockBurst™ Direct Mode The device functionality in these modes is decided by the content of a configuration word. This configuration word is presented in configuration section. Nordic Semiconductor ASA Revision: 1.0 - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Page 8 of 38 Fax +4772898989 December 2004 PRODUCT SPECIFICATION nRF2401A Single Chip 2.4 GHz Radio Transceiver ShockBurst™ The ShockBurst™ technology uses on-chip FIFO to clock in data at a low data rate and transmit at a very high rate thus enabling extremely power reduction. When operating the nRF2401A in ShockBurst™, you gain access to the high data rates (1 Mbps) offered by the 2.4 GHz band without the need of a costly, high-speed micro controller (MCU) for data processing. By putting all high speed signal processing related to RF protocol on-chip, the nRF2401A offers the following benefits: • • • Highly reduced current consumption Lower system cost (facilitates use of less expensive micro controller) Greatly reduced risk of ‘on-air’ collisions due to short transmission time The nRF2401A can be programmed using a simple 3-wire interface where the data rate is decided by the speed of the micro controller. By allowing the digital part of the application to run at low speed while maximizing the data rate on the RF link, the nRF ShockBurst™ mode reduces the average current consumption in applications considerably. ShockBurst™ principle When the nRF2401A is configured in ShockBurst™, TX or RX operation is conducted in the following way (10 kbps for the example only). Continuous 10kbps 8-bit MCU nRF2401A FIFO ShockBurstTM 1Mbps Figure 4 Clocking in data with MCU and sending with ShockBurst technology Without ShockBurstTM, running at speed dictated by 10Kbs MCU 10mA periode 10mA period 10Kbs MCU with ShockBurstTM 0 20 40 60 80 100 120 140 160 180 200 220 240 Time mS Figure 5 Current consumption with & without ShockBurst technology Nordic Semiconductor ASA Revision: 1.0 - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Page 9 of 38 Fax +4772898989 December 2004 PRODUCT SPECIFICATION nRF2401A Single Chip 2.4 GHz Radio Transceiver nRF2401A in ShockBurstTM TX (CE=hi)? YES NO Data content of registers: uController Loading ADDR and PAYLOAD data ADDR PAYLOAD Maximum 256 bits nRF2401A Calculating CRC ADDR PAYLOAD CRC NO CE=Low? YES nRF2401A Adding Preamble Preamble ADDR PAYLOAD CRC nRF2401A Sending ShockBurstTM Package (250 or 1000kbps) Input FIFO not Empty YES Sending completed? NO Figure 6 Flow Chart ShockBurst™ Transmit of nRF2401A nRF2401A ShockBurst™ Transmit: MCU interface pins: CE, CLK1, DATA 1. When the application MCU has data to send, set CE high. This activates nRF2401A on-board data processing. 2. The address of the receiving node (RX address) and payload data is clocked into the nRF2401A. The application protocol or MCU sets the speed 2.7 GHz 2) 1) Nordic Semiconductor ASA Revision: 1.0 - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Page 34 of 38 Fax +4772898989 December 2004 PRODUCT SPECIFICATION nRF2401A Single Chip 2.4 GHz Radio Transceiver PCB layout example Figure 21 shows a PCB layout example for the application schematic in Figure 20. A double-sided FR-4 board of 1.6mm thickness is used. This PCB has a ground plane on the bottom layer. Additionally, there are ground areas on the component side of the board to ensure sufficient grounding of critical components. A large number of via holes connect the top layer ground areas to the bottom layer ground plane. No components in bottom layer Top silk screen Top view Bottom view Figure 21 nRF2401A RF layout with single ended connection to 50Ω antenna and 0603 size passive components Nordic Semiconductor ASA Revision: 1.0 - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Page 35 of 38 Fax +4772898989 December 2004 PRODUCT SPECIFICATION nRF2401A Single Chip 2.4 GHz Radio Transceiver DEFINITIONS Data sheet status Objective product specification Preliminary product specification Product specification This data sheet contains target specifications for product development. This data sheet contains preliminary data; supplementary data may be published from Nordic Semiconductor ASA later. This data sheet contains final product specifications. Nordic Semiconductor ASA reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. Limiting values Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Specifications sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information Where application information is given, it is advisory and does not form part of the specification. Table 23. Definitions Nordic Semiconductor ASA reserves the right to make changes without further notice to the product to improve reliability, function or design. Nordic Semiconductor ASA does not assume any liability arising out of the application or use of any product or circuits described herein. LIFE SUPPORT APPLICATIONS These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Nordic Semiconductor ASA customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Nordic Semiconductor ASA for any damages resulting from such improper use or sale. Product Specification: Revision Date: 23.12.2004. Data sheet order code: 231204-nRF2401A or 231204-nRF2401AG All rights reserved ®. Reproduction in whole or in part is prohibited without the prior written permission of the copyright holder. Nordic Semiconductor ASA Revision: 1.0 - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Page 36 of 38 Fax +4772898989 December 2004 PRODUCT SPECIFICATION nRF2401A Single Chip 2.4 GHz Radio Transceiver YOUR NOTES Nordic Semiconductor ASA Revision: 1.0 - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Page 37 of 38 Fax +4772898989 December 2004 PRODUCT SPECIFICATION nRF2401A Single Chip 2.4 GHz Radio Transceiver Nordic Semiconductor ASA – World Wide Distributors For Your nearest dealer, please see http://www.nordicsemi.no Main Office: Vestre Rosten 81, N-7075 Tiller, Norway Phone: +47 72 89 89 00, Fax: +47 72 89 89 89 Visit the Nordic Semiconductor ASA website at http://www.nordicsemi.no Nordic Semiconductor ASA Revision: 1.0 - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Page 38 of 38 Fax +4772898989 December 2004