參數(shù)資料
型號(hào)： AMIS49587GEVK
廠商： ON Semiconductor
文件頁(yè)數(shù)： 4/55頁(yè)
文件大?。?/td> 0K
描述： KIT EVALUATION AMIS49587
標(biāo)準(zhǔn)包裝： 1
主要目的： 接口，電源線路收發(fā)器
嵌入式： 否
已用 IC / 零件： AMIS49587
已供物品： 2 個(gè)板，線纜，CD，文檔
其它名稱(chēng)： AMIS49587GEVKOS
AMIS49587
http://onsemi.com
12
4.1.3 Transmitter External Parameters: Pin TX_OUT, ALC_IN, TX_ENB
To guarantee the transmitter external specifications the TX_CLK frequency must be 12 MHz
$ 100 ppm.
Table 10. TRANSMITTER EXTERNAL PARAMETERS
Parameter
Test Conditions
Symbol
Min
Typ
Max
Unit
Maximum peak output level
fTX_OUT = 23.75 kHz
fTX_OUT = 95 kHz
Level control at max. output
VTX_OUT
0.85
0.76
1.15
1.22
Vp
Second order harmonic distortion
fTX_OUT = 95 kHz
Level control at max. output
HD2
54
dB
Third order harmonic distortion
fTX_OUT = 95 kHz
Level control at max. output
HD3
56
dB
Frequency accuracy of the
generated sine wave
(Notes 4 and 6)
DfTX_OUT
30
Hz
Capacitive output load at pin
TX_OUT
(Note 4)
CLTX_OUT
20
pF
Resistive output load at pin
TX_OUT
RLTX_OUT
5
kW
Turn off delay of TX_ENB output
(Note 5)
TdTX_ENB
0.25
0.5
ms
Automatic level control attenuation
step
ALCstep
2.9
3.1
dB
Maximum attenuation
ALCrange
20.3
21.7
dB
Low threshold level on ALC_IN
VTLALC_IN
0.49
0.36
V
High threshold level on ALC_IN
VTHALC_IN
0.71
0.54
V
Input impedance of ALC_IN pin
RALC_IN
111
189
kW
Power supply rejection ration of the
transmitter section
PSRRTX_OUT 10 (Note 7)
35 (Note 8)
dB
4. This parameter will not be tested in production.
5. This delay corresponds to the internal transmit path delay and will be defined during design.
6. Taking into account the resolution of the DDS and an accuracy of 100 ppm of the crystal.
7. A sinusoidal signal of 10 kHz and 100 mVpp is injected between VDDA and VSSA. The digital AD converter generates an idle pattern. The
signal level at TX_OUT is measured to determine the parameter.
8. A sinusoidal signal of 50 Hz and 100 mVpp is injected between VDDA and VSSA. The digital AD converter generates an idle pattern. The
signal level at TX_OUT is measured to determine the parameter.
The LPF filter + amplifier must have a frequency characteristic between the limits listed below. The absolute output level
depends on the operating condition. In production the measurement will be done for relative output levels where the 0 dB
reference value is measured at 50 kHz with a signal amplitude of 100 mV.
Table 11. TRANSMITTER FREQUENCY CHARACTERISTICS
Frequency (kHz)
Attenuation
Unit
Min
Max
10
0.5
dB
95
1.3
0.5
dB
130
4.5
2.0
dB
165
3.0
dB
330
18.0
dB
660
36.0
dB
1000
50
dB
2000
50
dB
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