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STEVAL-IKR002V4D
SPIRIT1 868 MHz low data rate tansceiver daughterboard
Data brief
Description
The STEVAL-IKR002V4D product evaluation
board is based on the SPIRIT1, a very low-power
RF transceiver intended for RF wireless
applications in the sub 1 GHz frequency band.
Features
• SPIRIT1 low power sub GHz transceiver in a
standalone RF module tuned for 868 MHz
• Modulation schemes: 2-FSK, GFSK, MSK,
GMSK, OOK, and ASK
• Suitable for wireless M-BUS applications
• Programmable air data rate: from 1 to 500 kbps
• Very low power consumption: 9.7 mA RX and
21 mA TX at +11 dBm
• Excellent receiver sensitivity (down to -119
dBm)
• Low duty cycle RX/TX operation mode
• Automatic acknowledgment, retransmission,
and timeout protocol engine
• AES 128-bit encryption co-processor
• SPI interface for microcontroller
• RoHS compliant
July 2014
DocID025785 Rev 1
For further information contact your local STMicroelectronics sales office.
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6
8
10
R _0R 0_0402
R8
R _0R 0_0402
R7
B2=433MHz
B1=315MHz
B0=169MHz
1
R _0R 0_0402
R 11
R _0R 0_0402
R 10
R _0R 0_0402
R9
XTAL
B3=920MHz
B3=915MHz
B3=868MHz
Mount
resistor
relative to
used band
C_12P_0402_C0G_J_50
C9
Y1
SDn
11
12
13
14
15
C_TBD_0402_C0G
C 19
L7
L_10U _0805
C_10P_0402_C0G_J_50
C 10
REXT
TX
SMPS2
SMPS1
SPIRIT1_2
CSn
SCLK
SDI
SDO
GPIO_0
NX3225GA-xxMHz (XTAL)
5
4
3
2
U1
C 21
C _100p_0402_C 0G
C_100n_0402_X7R
C0
20
GPIO_1
XOUT
1
3
5
7
9
R _0R 0_0402
R6
SDO
SDI
SCLK
CSn
J7
HEADER 5X2
GPIO0
GPIO3
GPIO2
GPIO1
C _330p_0402_C 0G
C 22
7
SPIRIT_DUMMY1
19
GPIO_2
XIN
DUMMY3
SDn
C 20
C_1U_0603_X7R_K_6V3
8
J6
HEADER 5X2
VCC_RF
18
VBAT2
SPIRIT_DUMMY2
17
VREG
GPIO_3
RXP
9
6
2
4
6
8
10
1
3
5
7
9
16
VBAT1
RXN
10
2/4
GND
L8
L1
L_TBD_0402
C4
C_TBD_0402_C0G
C_TBD_0402_C0G
L_TBD_0402
L4
C_TBD_0402_C0G
C5
C_TBD_0402_C0G
L_TBD_0402
L_TBD_0402
L6
C6
L5
C1
L_TBD_0402
L2
C 14
C7
C_TBD_0402_C0G
C_TBD_0402_C0G
C2
L3 L_TBD_0402
C_TBD_0402_C0G
C8
C 13
C_TBD_0402_X7R
C_TBD_0402_C0G
C3
C_TBD_0402_C0G
C 12
C_100n_0402_X7R
L_TBD_0402
L9
C 11
C_1U_0603_X7R_K_6V3
R 13
R_TBD_0402
R 12
R_TBD_0402
L0
L_TBD_0402_50M
C_TBD_0402_C0G
C 15
L_TBD_0402
DUMMY3
3V3
J1
RF_IN/OUT
1
21
3V3
Schematic diagram
STEVAL-IKR002V4D
Schematic diagram
Figure 1. STEVAL-IKR002V4D circuit schematic
AM17485v1
STEVAL-IKR002V4D
2
Revision history
Revision history
Table 1. Document revision history
Date
Revision
04-Jul-2014
1
Changes
Initial release.
DocID025785 Rev 1
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STEVAL-IKR002V4D
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