参数资料
| 型号： | AMIS49587C5872G |
| 厂商： | ON Semiconductor |
| 文件页数： | 2/55页 |
| 文件大小： | 0K |
| 描述： | IC MODEM PLC 50/60MHZ 52QFN |
| 标准包装： | 37 |
| 波特率： | 可选 |
| 电源电压： | 3 V ~ 3.6 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 52-VFQFN 裸露焊盘 |
| 供应商设备封装： | 52-QFN（8x8） |
| 包装： | 管件 |
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AMIS49587
http://onsemi.com
10
CRC
CRC is a 5V compliant open drain output. An external pullup resistor defines the logic high level as illustrated in Figure 5.
A typical value for this pullup resistance “R” is 10 k
W. The signal on this output depends on the cyclic redundancy code result
of the received frame. If the cyclic redundancy code is correct CRC = 1 during the pause between 2 time slots.
RESB
RESB is a digital input pin. It is used to perform a hardware reset of the AMIS49587. This pin supports a 5 V voltage level.
The reset is active when the signal is low (0 V).
TEST
TEST is a digital input pin. It is used to enable the test mode of the chip. Normal mode is activated when TEST signal is low
(0 V). For normal operation, the TEST pin may be left unconnected. Due to the internal pulldown, the signal is maintained to
low (0 V). TEST pin is not 5 V safe.
TX_ENB
TX_ENB is a digital output pin. It is low when the transmitter is activated. The signal is available to turn on the line driver.
TX_ENB is a 5 V safe with open drain output, hence a pullup resistance is necessary achieve the requested voltage level
associated with a logical one. See also Figure 5 for reference.
TX_OUT
TX_OUT is the analog output pin of the transmitter. The provided signal is the SFSK modulated frames. A filtering operation
must be performed to reduce the second order harmonic distortion. For this purpose an active filter is realized. Figure 7 gives
the representation of this filter.
Figure 7. TX_OUT Filter
ALC
control
ALC_IN
Transmitter (SFSK Modulator)
ARM
Interface
&
Control
TX_OUT
LP
Filter
TX_EN
TO TX POWER
OUTPUT STAGE
FROM LINE
DRIVER
C1
R1
VSSA
C2
R2
R3
C3
C4
ALC_IN
ALC_IN is the automatic level control analog input pin. The signal is used to adjust the level of the transmitted signal. The
signal level adaptation is based on the AC component. The DC level on the ALC_IN pin is fixed internally to 1.65 V. Comparing
the peak voltage of the AC signal with two internal thresholds does the adaptation of the gain. Low threshold is fixed to 0.4 V.
A value under this threshold will result in an increase of the gain. The high threshold is fixed to 0.6 V. A value over this threshold
will result in a decrease of the gain. A serial capacitance is used to block the DC components. The level adaptation is performed
during the transmission of the first two bits of a new frame. Eight successive adaptations are performed.
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相关代理商/技术参数 |
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| AMIS49587C5872RG | 功能描述:电信线路管理 IC PLC MODEM 2400BAUD RoHS:否 制造商:STMicroelectronics 产品:PHY 接口类型:UART 电源电压-最大:18 V 电源电压-最小:8 V 电源电流:30 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VFQFPN-48 封装:Tray |
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| AMIS-50050 | 制造商:ON Semiconductor 功能描述:SPREAD SPECTRUM BASEBAND CNTRLR - Trays 制造商:ON Semiconductor 功能描述:SPREAD SPECTRUM BASEBAND CNTRLR - Tape and Reel |
| AMIS-50051 | 制造商:ON Semiconductor 功能描述:DMOD 32LQFP / - Trays 制造商:ON Semiconductor 功能描述:DMOD - Tape and Reel |
| AMIS-52000 | 制造商:AMI 制造商全称:AMI 功能描述:Single-Chip Radio Transceiver |
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