參數(shù)資料
型號(hào)： TH71112
廠商： Electronic Theatre Controls, Inc.
英文描述： 868/915MHz FSK/FM/ASK Receiver
中文描述： 868/915MHz FSK信號(hào)/調(diào)頻/ ASK接收機(jī)
文件頁數(shù)： 9/20頁
文件大?。?/td> 668K
代理商： TH71112
TH71112
868/915MHz
FSK/FM/ASK Receiver
TH71112 Data Sheet
3901071112
Page 9 of 20
Nov. 2001
Rev. 005
DC Characteristics
all parameters under normal operating conditions, unless otherwise stated;
typical values at T
a
= 23 °C and V
cc
= 3 V
Parameter
Symbol
I
SBY
I
cc, low
Condition
Min
Typ
Max
100
9.0
Unit
nA
mA
Standby current
Total supply current at low gain
ENRX=0
ENRX=1,
LNA at LOW GAIN
ENRX=1,
LNA at HIGH GAIN
6.0
7.5
Total supply current at high gain
I
cc, high
7.5
9.2
11.0
mA
Opamp input offset voltage
Opamp input offset current
Opamp input bias current
RSSI voltage at low input level
V
offs
I
offs
I
bias
V
RSSI, low
-20
-50
-100
0.5
20
50
100
1.5
mV
nA
nA
V
I
OAP
– I
OAN
0.5 * (I
OAP
+ I
OAN
)
P
i
= -65 dBm,
LNA at LOW GAIN
P
i
= -35 dBm,
LNA at LOW GAIN
1.0
RSSI voltage at high input level
V
RSSI, high
1.25
1.9
2.45
V
AC System Characteristics
all parameters under normal operating conditions, unless otherwise stated;
all parameters based on test circuits for FSK (Fig. 2), FM (Fig. 4) and ASK (Fig. 5), respectively;
typical values at T
a
= 23 °C and V
cc
= 3 V, RF at 868.3 MHz, second IF at 10.7MHz
Parameter
Symbol
T
FSK
Condition
Min
Typ
Max
0.9
Unit
ms
Start-up time – FSK/FM
ENRX from 0 to 1,
valid data at output
depends on ASK
detector time constant,
valid data at output
B
IF2
= 40kHz
f =
±
15kHz (FSK/FM)
BER
≤
3
10
-3
B
IF2
= 150kHz
f =
±
50kHz (FSK/FM)
BER
≤
3
10
-3
B
IF2
= 40kHz
BER
≤
3
10
-3
B
IF2
= 150kHz
BER
≤
3
10
-3
BER
≤
3
10
-3
LNA at LOW GAIN
BER
≤
3
10
-3
LNA at LOW GAIN
Start-up time – ASK
T
ASK
R3
C12
+
T
FSK
ms
Input sensitivity – FSK
(narrow band)
P
min, n
-109
dBm
Input sensitivity – FSK
(wide band)
P
min, w
-102
dBm
Input sensitivity – ASK
(narrow band)
Input sensitivity – ASK
(wide band)
Maximum input signal – FSK/FM
P
minA, n
-108
dBm
P
minA, w
-104
dBm
P
max, FM
0
dBm
Maximum input signal – ASK
P
max, ASK
-10
dBm
Spurious emission
Image rejection
Blocking immunity
VCO gain
Charge pump current
Notes:
1. desired signal with FSK/FM or ASK modulation, CW blocking signal
P
spur
P
imag
P
block
K
VCO
I
CP
-70
dBm
dB
dB
MHz/V
μA
65
57
250
60
f
block
>
±
2MHz, note 1
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