NRF905 NORDIC SEMICONDUCTOR, NRF905 Datasheet - Page 4

• 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
1 PIN FUNCTIONS
Main office: Nordic Semiconductor ASA
Revision: 1.4
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Name
TRX_CE
PWR_UP
uPCLK
VDD
VSS
CD
AM
DR
VSS
MISO
MOSI
SCK
CSN
XC1
XC2
VSS
VDD
VSS
VDD_PA
ANT1
ANT2
VSS
IREF
VSS
VDD
VSS
VSS
VSS
VSS
VSS
DVDD_1V2
TX_EN
Pin function
Digital input
Digital input
Clock output
Power
Power
Digital output
Digital output
Digital output
Power
SPI - interface
SPI - interface
SPI - Clock
SPI - enable
Analog Input
Analog Output
Power
Power
Power
Power output
RF
RF
Power
Analog Input
Power
Power
Power
Power
Power
Power
Power
Power
Digital input
Table 3 nRF905 pin function.
- Vestre Rosten 81, N-7075 Tiller, Norway
Description
Enables chip for receive and transmit
Power up chip
Output clock, divided crystal oscillator full-swing clock
Power supply (+3V DC)
Ground (0V)
Carrier Detect
Address Match
Receive and transmit Data Ready
Ground (0V)
SPI output
SPI input
SPI clock
SPI enable, active low
Crystal pin 1/ External clock reference pin
Crystal pin 2
Ground (0V)
Power supply (+3V DC)
Ground
Positive supply (1.8V) to nRF905 power amplifier
Antenna interface 1
Antenna interface 2
Ground (0V)
Reference current
Ground (0V)
Power supply (+3V DC)
Ground (0V)
Ground (0V)
Ground (0V)
Ground (0V)
Ground (0V)
Low voltage positive digital supply output for de-coupling
TX_EN=”1”TX mode, TX_EN=”0”RX mode
Page 4 of 42
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June 2006