NRF905 NORDIC SEMICONDUCTOR, NRF905 Datasheet - Page 3

• Manufacturer Part Number: NRF905
• Description: IC, TRANSCEIVER, 430 928MHZ, SMD
• Manufacturer: NORDIC SEMICONDUCTOR

Specifications of NRF905

• Transmitting Current: 9mA
• Data Rate: 50Kbps
• Frequency Range: 430MHz To 928MHz
• Modulation Type: GFSK
• Sensitivity Dbm: -100dBm
• Rf Ic Case Style: QFN
• No. Of Pins: 32
• Supply Voltage Range: 1.9V To 3.6V
• Output Power: 10dBm
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PRODUCT SPECIFICATION
nRF905 Single Chip 433/868/915 MHz Radio Transceiver
TABLE OF CONTENTS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Main office: Nordic Semiconductor ASA
Revision: 1.4
5.1
5.2
5.3
5.4
5.5
5.6
5.7
6.1
6.2
6.3
6.4
6.5
7.1
7.2
7.3
7.4
7.5
8.1
8.2
8.3
8.4
8.5
8.6
8.7
8.8
9.1
9.2
9.3
9.4
9.5
10.1
11.1
11.2
11.3
11.4
Pin Functions .................................................................................................................... 4
Pin Assignment................................................................................................................. 5
Electrical Specifications ................................................................................................... 6
Current Consumption........................................................................................................ 8
Modes of Operation .......................................................................................................... 9
Device Configuration...................................................................................................... 15
Important Timing Data ................................................................................................... 21
Peripheral RF Information .............................................................................................. 24
nRF905 features.............................................................................................................. 28
Package Outline.......................................................................................................... 30
Application Examples ................................................................................................ 32
Absolute Maximum Ratings....................................................................................... 38
Glossary of Terms ...................................................................................................... 39
Definitions .................................................................................................................. 40
Active Modes ........................................................................................................... 9
Power Saving Modes ............................................................................................... 9
nRF ShockBurst™ Mode......................................................................................... 9
Typical ShockBurst
Typical ShockBurst
Power Down Mode ................................................................................................ 14
Standby Mode ........................................................................................................ 14
SPI Register Configuration .................................................................................... 15
SPI Instruction Set ................................................................................................. 16
SPI Timing ............................................................................................................. 17
RF – Configuration Register Description .............................................................. 19
Register Contents ................................................................................................... 20
Device Switching Times ........................................................................................ 21
ShockBurst
ShockBurstTM RX timing ..................................................................................... 22
Preamble ................................................................................................................ 22
Time On Air ........................................................................................................... 23
Crystal Specification .............................................................................................. 24
External Clock Reference ...................................................................................... 24
Microprocessor Output Clock ................................................................................ 24
Antenna Output ...................................................................................................... 25
Output Power Adjustment...................................................................................... 25
Modulation ............................................................................................................. 25
Output Frequency................................................................................................... 26
PCB Layout and Decoupling Guidelines ............................................................... 27
Carrier Detect......................................................................................................... 28
Address Match ....................................................................................................... 28
Data Ready............................................................................................................. 28
Auto Retransmit ..................................................................................................... 29
RX Reduced Power Mode...................................................................................... 29
Package marking .................................................................................................... 31
Differential Connection to a Loop Antenna........................................................... 32
PCB Layout Example; Differential Connection to a Loop Antenna...................... 33
Single ended connection to 50 antenna............................................................... 34
PCB Layout Example; Single Ended Connection to 50 Antenna ....................... 36
TM
TX timing ....................................................................................... 21
TM
TM
- Vestre Rosten 81, N-7075 Tiller, Norway
TX...................................................................................... 10
RX ..................................................................................... 12
Page 3 of 42
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June 2006