PRODUCT SPECIFICATION
Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Fax +4772898989
Revision: 1.4
Qhtr s (
November 2002
315/433 MHz Single Chip RF Transceiver
)($785(6
True single chip FSK transceiver
Few external components required
No set up or configuration
No coding of data required
20kbit/s data rate
2 frequency bands
Wide supply range
Very low power consumption
Standby mode
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Alarm and Security Systems
Automatic Meter Reading (AMR)
Home Automation
Remote Control
Surveillance
Automotive
Telemetry
Toys
Wireless Communication
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nRF403 is a true single chip UHF transceiver designed to operate in the 433MHz ISM
(Industrial, Scientific and Medical) and 315 MHz frequency band. It features
Frequency Shift Keying (FSK) modulation and demodulation capability. nRF403
operates at bit rates up to 20kbit/s. Transmit power can be adjusted to a maximum of
10dBm. Antenna interface is differential and suited for low cost PCB antennas.
nRF403 features a standby mode which makes power saving easy and efficient.
nRF403 operates from a single +3 V DC supply.
As a primary application, nRF403 is intended for UHF radio equipment in compliance
with the European Telecommunication Standard Institute (ETSI) specification
EN 300 220-1, the US Federal Communications Commission (FCC) standard CFR47
and Weak Power Radio in Japan.
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Frequency bands
433.93
315.16
MHz
Modulation
FSK
Frequency deviation
15
kHz
Max. RF output power @ 400
, 3V
10
dBm
Sensitivity @ 400
, BR=20 kbit/s, BER<10
-3
-105
dBm
Maximum bit rate
20
kbit/s
Supply voltage
2.7 3.6
V
Receive supply current
250
*
A
Transmit supply current @ -10 dBm output power
8
mA
Standby supply current
8
A
Table 1. nRF403 quick reference data
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nRF403-IC
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nRF403-EVKIT
Evaluation kit (2 test PCB)
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Table 2. nRF403 ordering information.
*
The PWR_UP pin is used for power duty cycling. The duty-cycle is 2 % with a period of 200msec.
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PRODUCT SPECIFICATION
Q5) 6LQJOH &KLS 5) 7UDQVFHLYHU
Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway -
Phone +4772898900 - Fax +4772898989
Revision: 1.4
Qhtr!s (
November 2002
%/2&. ',$*5$0
Figure 1. nRF403 block diagram with external components.
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1
XC1
Input
Crystal oscillator input
2
VDD
Power
Power supply (+3V DC)
3
VSS
Ground
Ground (0V)
4
FILT1
Input
Loop filter
5
VCO1
Input
External inductor for VCO
6
VCO2
Input
External inductor for VCO
7
VSS
Ground
Ground (0V)
8
VDD
Power
Power supply (+3V DC)
9
DIN
Input
Data input
10
DOUT
Output
Data output
11
RF_PWR
Input
Transmit power setting
12
FREQ
Input
Channel selection
FREQ="0"
433.93MHz
FREQ="1"
315.16MHz
13
VDD
Power
Power supply (+3V DC)
14
VSS
Ground
Ground (0V)
15
ANT2
Input/Output
Antenna terminal
16
ANT1
Input/Output
Antenna terminal
17
VSS
Ground
Ground (0V)
18
PWR_UP
Input
Power on/off
PWR_UP = "1"
Power up (Operating mode)
PWR_UP = "0"
Power down (Standby mode)
19
TXEN
Input
Transmit enable
TXEN = "1"
Transmit mode
TXEN = "0"
Receive mode
20
XC2
Output
Crystal oscillator output
Table 3. nRF403 pin functions
.
PA
LNA
DEM
PLL
OSC
VCO
ANT1
ANT2
VCO
INDUCTOR
REFERENCE
5
6
11
4
1
20
10
19
9
15
16
RF_PWR
DOUT
TXEN
DIN
12
PWR_UP
18
LOOP
FILTER
FREQ
PRODUCT SPECIFICATION
Q5) 6LQJOH &KLS 5) 7UDQVFHLYHU
Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway -
Phone +4772898900 - Fax +4772898989
Revision: 1.4
Qhtr"s (
November 2002
(/(&75,&$/ 63(&,),&$7,216
Conditions: VDD = +3V DC, VSS
= 0V, T
A
= -25
C to +85
C
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7\S
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8QLWV
VDD
Supply voltage
2.7
3
3.6
V
VSS
Ground
0
V
I
DD
Total current consumption
Receive mode
Transmit mode @ -10 dBm RF power
Stand by mode
11
8
8
mA
mA
A
P
RF
Max. RF output power @ 400
load
10
dBm
V
IH
Logic "1" input voltage
0.7
V
DD
V
DD
V
V
IL
Logic "0" input voltage
0
0.3
V
DD
V
V
OH
Logic "1" output voltage (I
OH
= - 1.0mA)
0.7
V
DD
V
DD
V
V
OL
Logic "0" output voltage (I
OL
= 1.0mA)
0
0.3
V
DD
V
I
H
Logic "1" input current (V
I
= VDD)
+20
A
I
L
Logic "0" input current (V
I
= VSS)
-20
A
f
1
433 MHz frequency band
433.93
MHz
f
2
315 MHz frequency band
315.16
MHz
Dynamic range
90
dB
Modulation type
FSK
f
Frequency deviation
15
kHz
f
IF
IF frequency
400
kHz
BW
IF
IF bandwidth
65
85
kHz
f
XTAL
Crystal frequency
4.0
MHz
Crystal frequency stability requirement
1)
45
ppm
Loop filter voltage
3)
0.9
1.1
1.3
V
Sensitivity @ 400
,BR=20 kbit/s, BER < 10
-3
-105
dBm
Bit rate
0
20
kbit/s
Z
I
Recommended antenna port differential impedance
400
Spurious emission
Compliant with EN 300-220-1 V1.2.1
2)
Table 4. nRF403 electrical specifications.
1)
Maximum 5dB sensitivity degradation at temperature extremes. See also page 11 Freq. difference.
2)
With a PCB loop antenna or a differential to single ended matching network to a 50
antenna.
3)
See also page 9, Loop filter.
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VDD ................................- 0.3V to +6V
VSS .................................................. 0V
,QSXW YROWDJH
V
I
....................... - 0.3V to VDD + 0.3V
2XWSXW YROWDJH
V
O
...................... - 0.3V to VDD + 0.3V
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(T
A
=25
C) ........................... 250mW
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Operating Temperature.... -25
C to +85
C
Storage Temperature...... -40
C to +125
C
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Electrostatic Sensitive Device
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PRODUCT SPECIFICATION
Q5) 6LQJOH &KLS 5) 7UDQVFHLYHU
Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway -
Phone +4772898900 - Fax +4772898989
Revision: 1.4
Qhtr#s (
November 2002
3,1 $66,*10(17
PWR_UP
VSS
XC1
ANT1
VDD
DIN
VSS
ANT2
VSS
VSS
FILT1
XC2
TXEN
RF_PWR
DOUT
VDD
14
20
19
17
16
15
18
1
2
3
4
5
6
7
8
9
10
11
12
13
VCO1
VCO2
FREQ
VDD
Figure 2. nRF403 pin assignment.
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nRF403, 20 pin SSOIC. (Dimensions in mm.)
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D
20 pin SSOIC
(Wide)
0LQ
0D[
6.90
7.50
5.00
5.60
7.40
8.20
2.00
0.05
0.65
0.22
0.38
0.55
0.95
0.10
0
8
Figure 3. SSOIC-20 Package outline.
nRF403
20 pin SSOIC
A
1
A
e b
L
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1 2 3
20 19 18
PRODUCT SPECIFICATION
Q5) 6LQJOH &KLS 5) 7UDQVFHLYHU
Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway -
Phone +4772898900 - Fax +4772898989
Revision: 1.4
Qhtr$s (
November 2002
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The timing information for the different operations is summarised in Table 5.
(TX is transmit mode, RX is receive mode and Std.by is Standby mode.)
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TX
RX
t
TR
3ms
RX
TX
t
RT
1ms
Std.by
TX
t
ST
2ms
Std.by
RX
t
SR
3ms
Operational mode
V
DD
=0
TX
t
VT
4ms
V
DD
=0
RX
t
VR
5ms
Start-up
Table 5 Switching times for nRF403.
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When switching from RX-mode to TX-mode data (DIN) may not be sent before the
TXEN-input has been high for at least 1ms, see Figure 4(a).
When switching from TX-mode to RX-mode the receiver may not receive data (DOUT)
before the TXEN-input has been low for at least 3ms, see Figure 4(b).
PWR_UP
VDD
TXEN
DIN
0
2
4
ms
1ms
RX to TX
PWR_UP
VDD
TXEN
DOUT
0
2
4
ms
3ms
TX to RX
(a)
(b)
Figure 4. Timing diagram for nRF403for switching from RX to TX (a)
and TX to RX (b).
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The time from the PWR_UP input is set to "1", until the data (DOUT) is valid is t
SR,
, see
Table 5. Worst case t
SR
is 3ms for nRF403 as can be seen in Figure 5 (a).
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The time from the PWR_UP input is set to "1", until the synthesised frequency is stable
is t
ST
, see Table 5.
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