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Details, datasheet, quote on part number:nRF904
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Datasheet text preview:
PRODUCT SPECIFICATION
Single chip 915 MHz Transmitter
)($785(6
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$33/,&$7,216
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True single chip FSK transmitter in a small 8-pin package Adjustable output power up to +1dBm FSK data rate up to 50kbits/s Controllable modulation deviation Very few external components Improved frequency stability compared to SAW solutions Wide power supply range: 2.4 to 3.6 V Low supply current, typical 9mA @ -10dBm output power Power Down and Clock modes makes power saving easy Reference Clock output pin for microcontroller
Automatic Meter Reading Keyless entry Wireless data communication Alarm and security systems Home Automation Remote control Surveillance Automotive Telemetry Toys
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nRF904 is a single-chip transmitter for the 902-928 MHz band. It is compliant with the US Federal Communications Commission (FCC) standard CFR47 chapter 15. The transmitter consists of a fully integrated frequency synthesiser, a power amplifier, a crystal oscillator and a modulator. Due to the use of the crystal-oscillator stabilised frequency synthesiser, frequency drift is much lower than in comparable SAWresonator based solutions. Output power and frequency deviation is easily programmable by use of external resistors. Current consumption is very low, only 9 mA at an output power of 10dBm. Built-in Clock and Power Down modes makes power saving easily realisable.
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Supply voltage Maximum output power @ 400, 3 V Maximum FSK data rate Supply current FSK transmitter @ -10dBm output power Supply current in Clock mode Supply current in Power Down mode
9DOXH
2.4 3.6 1 50 9 200 <1 0
8QLW
V dBm kbit/s mA µA n
Table 1. nRF904 quick reference data.
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nRF904 - IC nRF904 - EVKIT
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8 pin SOIC Evaluation kit with nRF904 IC on board
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Table 2. nRF904 ordering information.
Main office: Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway Revision: 2.1 Page 1 of 16Ã
-
Phone +4772898900
- Fax +4772898989 October 2001
PRODUCT SPECIFICATION
Q5) 6LQJOH FKLS 0+] 7UDQVPLWWHU
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C rys ta l O s c illa to r
C lo c k D iv id e r
XTAL D IN
1 /4
F re q u e n c y s yn th e s iz e r P h ase D e te c to r Loop F ilte r
1 /2
XO8
VCO
P ow er A m p lifie r
ANT1 ANT2
P re s c a le r
1 /2 5 6
REXT
Figure 1. nRF904 block diagram.
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1 2 3 4 5 6 7 8
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XTAL REXT XO8 VDD DIN ANT2 ANT1 V SS
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Input Input Output Power Input Output Output Power
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Crystal pin / Power Up Power adjust / Clock Mode / ASK modulation digital input Reference Clock Output (Crystal Frequency / 8) Power Supply (+ 3 V DC) Digital Data Input Antenna terminal Antenna terminal Ground (0V)
Table 3. nRF904 pin functions.
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XT AL REXT XO8 VDD 1 2 3 4 8 7 6 5 VSS ANT 1 ANT 2 D IN
nRF 904
Figure 2. nRF904 pin assignment.
Nordic VLSI ASA Revision: 2.1
-
Vestre Rosten 81, N-7075 Tiller, Norway
QhtrÃ!Ãsà %
-
Phone +4772898900
-
Fax +4772898989 October 2001
PRODUCT SPECIFICATION
Q5) 6LQJOH FKLS 0+] 7UDQVPLWWHU
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Conditions: VDD = +3V, VSS = 0V, TA = - 40ºC to + 85ºC
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fTX fXTAL VDD Tamb PRF IDD IDD f RFSK IDD IDD 2SHUDWLQJ FRQGLWLRQV Transmit frequency Crystal frequency Supply voltage Operating temperature range Maximum Output Power Supply current CLOCK Mode Supply current POWER DOWN Mode )6. PRGXODWLRQ Frequency deviation (peak) FSK data rate Supply current @ 1dBm output power Supply current @ -10dBm output power $6. PRGXODWLRQ ASK data rate Transmitted power at data = `1' Transmitted power at data = `0' Supply current @ 1dBm output power Supply current @ -50dBm output power ',1 LQSXW SLQ HIGH level input voltage LOW level input voltage ;2 RXWSXW SLQ HIGH level output voltage LOW level output voltage
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1) 1)
0LQ
902 14.094 2 .4 - 40
7\S
0D[
928 14.500 3 .6 + 85 1 300 100
8QLWV
MHz MHz V °C dBm µA nA
3) 2)
175 10
6) 3) 3)
10 0
20 18 9
40 50 27 17
kHz kbit/s mA mA
RASK PRF1 PRF0 IDD IDD
0
3) 3)
18 175
10 1 -5 0 27 300
kbit/s dBm dBm mA uA
V IH V IL
4) 4)
VDD - 0.5 Vss
VDD 0 .3
V V
VOH VOL
5) 5)
VDD VDD -1.0
VDD
V V
NOTES: 1) The crystal frequency may be altered to produce any desired frequency within the 902MHz to 928MHz band. 2) Measured with no load on XO8 output pin. 3) Antenna load impedance = 400 . 4) The levels stated are supplied to a external series resistor in front of the DIN input pin 5) Output is an open collector. 6) Controllable with crystal parameters and external data filter.
Table 4. nRF904 electrical specifications.
Nordic VLSI ASA Revision: 2.1
-
Vestre Rosten 81, N-7075 Tiller, Norway
QhtrÃ"Ãsà %
-
Phone +4772898900
-
Fax +4772898989 October 2001
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