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Analog Front End IC TMS37122 - Reference Guide
4.2
Recommended System Operating Conditions
4.2.1
Base Station - Test Station Conditions
Parameter
Transmitter frequency
Wake-up Time
Wake-up Time
Data Rate
Wake Data Rate
Transmitter Operating
Quality Factor
4.2.2
Identification Device Conditions
Parameter
Resonance Frequency
Identification Device Quality
Factor
Identification Device Quality
Factor
Low Bit Transmit Frequency
Low Bit Transmit Frequency
High Bit Transmit Frequency
High Bit Transmit Frequency
60
Sign
fTX
tWAKE
tWAKE
Backup Mode
fRX
100% AM, PPM
Pulse Position
fWAKE
Modulation,
16 low bits
QopTX
Note:
The following parameters have to be established in the application.
Sign
ANT1, ANT2, ANT3
fRES
VCL = 5 V
ANT 1 used for backup
QopTRP
function
Notes 1 & 2
ANT 1, 2, 3,
QopTRP
no backup function
Notes 1 & 2
ANT1, -40...85 ºC
fL
Qop=10...30
Notes 1 & 2
ANT1, 25 ºC
fL
Qop=10...30
Notes 1 & 2
ANT1, -40...85 ºC
fH
Qop=10...30
Notes 1 & 2
ANT1, 25 ºC
fH
Qop=10...30
Notes 1 & 2
Notes:
1. Fres = 134.2 kHz.
2. Min/Max parameters depend on LR + CR temperature coefficient.
Note
Min
120
134.2
5
10
500
1000
30
Note
Min
120
134.2
10
130.2
134.7
132.0
134.7
118.0
123.7
120.0
123.7
August '01
Nom
Max
Unit
140
kHz
10
ms
50
ms
2000
4000
bits/s
2500
4000
bits/s
33
Nom
Max
Unit
140
kHz
30
20
139.5
kHz
136.5
kHz
128.0
kHz
126.5
kHz
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