MAX9947 데이터 시트보기 (PDF) - Maxim Integrated
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MAX9947 Datasheet PDF : 17 Pages
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MAX9947
AISG Integrated Transceiver
Electrical Characteristics (continued)
(VCC = 5V, VL = 3.3V, TXOUT connected with 50Ω to RXIN, 4.1kΩ resistor between BIAS and RES, 10kΩ resistor between RES and
GND, 1kΩ resistor between SYNCOUT and VCC, TA = TMIN to TMAX, unless otherwise specified. XTAL frequency 8.704MHz ±30ppm.
Typical values are at TA = +25°C.) (Note 2)
PARAMETER
Input Low Threshold Voltage
Input High Leakage Current
Input Low Leakage Current
Output Low Voltage
RECEIVER FILTER
Passband
SYMBOL
CONDITION
VXTAL1_IL
IXTAL1_IH
IXTAL1_IL
VSYNCOUT_OL
SYNCOUT source 3.3mA
fPB_L, fPB_H
Input amplitude 1.12VP-P
(the input carrier is recognized)
MIN TYP MAX UNITS
0.3 x
VCC
V
10
µA
-10
µA
0.4
V
1.1
4.17 MHz
Extra Carrier Receiver
Immunity
RECEIVER
Input Voltage Range
Equivalent Input Power Range
Input Impedance
2.176MHz carrier amplitude (112.4mVP-P
fIM1_L, fIM1_H ±3dB), extra carrier amplitude 0.8VP-P,
VDIRMD1 = VDIRMD2 = 0V (9.6kbps)
VIN
VCC = 3.0V to 5.5V, fRXIN = 2.176MHz
PIN
VCC = 3.0V to 5.5V, fRXIN = 2.176MHz
ZIN
f = fO, TA ≤ 85°C
f = fO, TA > 85°C
Threshold Voltage Range
VTH
fRXIN = 2.176MHz
TRANSMITTER
Output Frequency
Output Frequency Variation
fO
ΔfO
(Note 5)
Output On Level at TXOUT
(Note 6)
VOUT
VRES = 1.5V (maximum)
VRES = 0.7V (minimum)
Output Off Power Level at
TXOUT (Note 6)
POUT
OOK off level
1.1
4.17 MHz
11
9
-18
79.72
18
18
-15
112.4
1.12
+5
-12
158.48
VP-P
dBm
kΩ
dBm
mVP-P
2.176
±100
11.1
12
2.24 2.52
5.38 6.28
1.30 1.17
-40
MHz
ppm
dBm
VP-P
dBm
VP-P
dBm
Output Emission Proile
Output Impedance
Ampliier Gain Bandwidth
TXOUT Short-Circuit
Protection
ZOUT
GBW
ISC
(Note 7)
DC
fSW = 10MHz
Short to GND or VCC, guaranteed over VCC
range
Conforms to AISG
Spectrum Emissions
Mask 3GPP TS 25.461,
See Figure 3
0.03
2.5
54
±200
Ω
MHz
mA
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