參數(shù)資料
型號: MC33690
廠商: Motorola, Inc.
英文描述: Standalone Tag Reader Circuit
中文描述: 獨立標簽讀寫器電路
文件頁數(shù): 16/24頁
文件大?。?/td> 442K
代理商: MC33690
Go to: www.freescale.com
revision 4.8, 5 February 2002
Motorola, Inc., 2002.
TAG READER
6V
V
SUP
16V, V
SS
= 0V, T
J
=
40
°
C to +125
°
C, unless otherwise noted
Figure 12 : Demodulator parameters definition
Parameter
Symbol
Test Conditions
& Comments
Min
Typ
Max
Unit
Type
DEMODULATOR (pin RD)
2.0
Input Voltage Range
V
INRD
F
MOD
3
4
5
V
2.2
Input Modulation Frequency
0.5
4
8
kHz
2.3
Demodulator Sensitivity
V
SENSE1
6.5V
V
SUP
16V
See figure 12 and note
1
1. The sensitivity is measured in the following application conditions : I
ANTENNA
= 50mA peak, V
RD
= 4V peak, C
EXT
= 10nF, square wave
modulation F
MOD
=F
TD1
/32.
2. Not including the delay due to the slew rate of the K output.
3. Clock stable condition implies V
XTAL1
meets the specification (see page 15).
-
5
15
mV
2.31 Demodulator Sensitivity
V
SENSE2
6V
V
SUP
<
6.5V
See figure 12 and note 1
-
7
30
mV
2.4
Demodulation Delay
t
Demod
See figure 12
Configuration C
see note
2
for configurations A
and B
-
7.5
10
μ
s
2.5
After Write Pulse Settling Time
t
Settling1
-
394
400
μ
s
2.6
Recovery Time after wake-up or reset
from clock stable to demodulator valid
output
t
Settling2
See note
3
-
646
700
μ
s
DRIVERS (pins TD1, TD2)
3.5
Output Carrier Frequency to Crystal
Frequency Ratio
R
FTD/
FXTAL
t
on/off
R
TDL
R
TDH
-
64
-
-
3.0 Turn on/off Delay
-
-
250
ns
3.1 Driver1/2 Low Side Out. Resistance
I
LOAD
= 150mA DC
I
LOAD
= -150mA DC
-
2.4
4
3.2 Driver1/2 High Side Out. Resistance
-
2.1
4
Demodulator
output (K or DOUT)
V
RD
V
SENSE
t
Demod
F
Freescale Semiconductor, Inc.
For More Information On This Product,
n
.
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