3G ASH Transceiver Application Circuit
2G Default OOK/ASK Configuration
3G ASH Transceiver Application Circuit
3G OOK/ASK Configuration
+ 3
+ 3
VDC
VDC
RX Data
RX Data
TX Data
CDCB
TX Data
RX Clock
Host
Microcontroller
Host
Microcontroller
RTH1
CDCB
RTH1
RTH2
RTH2
19
CFG
18
CFG
CLK
17
CFG
DAT
16
15
14
13
12
19
CFG
18
CFG
CLK
17
CFG
DAT
16
15
14
13
12
VCC
2
GND
3
RXD THLD THLD
VCC
2
GND
3
RXD THLD THLD
LAT
LAT
CLK
RX
1
2
CLK
RX
1
2
RFIO
RREF
RFIO
RREF
11
10
11
10
20
1
20
1
TOP VIEW
TOP VIEW
LESD
LESD
GND1
VCC
1
GND2
LPF
ADJ
GND1
VCC
1
GND2
LPF
ADJ
VCC
3
PK
DET
BB
OUT
CMP
IN
TX
VCC
3
PK
DET
BB
OUT
CMP
IN
TX
DATA MOD
DATA MOD
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
RREF
RREF
RLPF
RLPF
LRFB
LRFB
RTXM
RTXM
CBBO
CBBO
CRFB
CRFB
+ 3
+ 3
VDC
VDC
CPKD
CPKD
Tranceiver Set-Up, 3.0 Vdc, -40 to +85 °C
Item
Symbol
OOK
OOK
ASK
Units
Notes
Encoded Data Rate
DRNOM
4.8
19.2
115.2
8.68
34.72
820 pF
390 pF
6.2
kb/s
see pages 1 & 2
single bit
Minimum Signal Pulse
Maximum Signal Pulse
PKDET Capacitor
BBOUT Capacitor
TXMOD Resistor
LPFADJ Resistor
RREF Resistor
SPMIN
SPMAX
CPKD
CBBO
RTXM
RLPF
RREF
RTH2
RTH1
CDCB
CRFB
LAT
208.32
833.28
0.022
0.01
6.2
52.08
208.32
0.0056
0.0027
6.2
µs
µs
µF
µF
K
4 bits of same value
±10% ceramic
±10% ceramic
±5%, for 10 dBm output
±5%
470
160
24
K
100
100
100
K
±1%
THLD2 Resistor
-
-
100
K
±1%, typical values
±1%, typical values
tantalum
THLD1 Resistor1
20
20
20
K
DC Bypass Capacitor
4.7
4.7
4.7
µF
pF
nH
nH
RF Bypass Capacitor
Series Tuning Inductor
Shunt Tuning/ESD Inductor
RF Bypass Bead
100
100
100
±5% NPO
10
10
10
50 ohm antenna
50 ohm antenna
2506033017YO or equivalent
LESD
LRFB
100
100
100
Fair-Rite
Fair-Rite
Fair-Rite
Notes:
1. When using internal data and clock recovery, a THLD1 value of 47K is recommended to minimize start vector “nuisance tripping” due
to random noise.
CAUTION: Electrostatic Device. Observe precautions when handling.
RF Monolithics, Inc.
RFM Europe
Phone: (972) 233-2903
Phone: 44 1963 251383
Fax: (972) 387-8148
Fax: 44 1963 251510
E-mail: info@rfm.com
http://www.rfm.com
TR8000-08172007
Page 3 of 14
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
RFM [ RF MONOLITHICS, INC ]
