AMIS-30585 Ver la hoja de datos (PDF) - ON Semiconductor
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AMIS-30585 Datasheet PDF : 23 Pages
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AMIS-30585
Table 1: AMIS-30585 Pin Functions
No.
Name
I/O
1
VSSA
2
RX_OUT
Out
3
RX_IN
In
4
REF_OUT
Out
5
M50HZ_IN
In
6
10O
In/Out
7
TDO
Out
8
TDI
In
9
TCK
In
10
TMS
In
11
TRSTB
In
12
TX_DATA
Out
13
XIN
In
14
XOUT
Out
15
VSS
16
VDD
17
TXD
Out
18
RXD
In
19
IO2
In/Out
20
BR1
In
21
BR0
In
22
IO1
In/Out
23
RESB
In
24
TEST
In
25
TX_ENB
Out
26
TX_OUT
Out
27
ALC_IN
In
28
VDDA
P:
A:
D:
5V Safe:
Power pin
Analog pin
Digital pin
IO that support the presence of 5V on bus line
Out:
Output signal
In:
Input signal
In/Out: Bi-directional pin
Type
P
A
A
A
A
D, 5V Safe
D, 5V Safe
D, 5V Safe
D, 5V Safe
D, 5V Safe
D, 5V Safe
D, 5V Safe
A
A
P
P
D, 5V Safe
D, 5V Safe
D, 5V Safe
D, 5V Safe
D, 5V Safe
D, 5V Safe
D, 5V Safe
D
D, 5V Safe
A
A
P
Description
Analog ground
Output of input stage opamp
Positive input of input stage opamp
Reference output for stabilization
50.60Hz input
Programmable IO pin (open drain)
Test data output
Test data output (internal pull down)
Test clock (internal pull down)
Test mode select (internal pull down)
Test reset bar (internal pull down, active low)
Data output corresponding to transmitted frequency
Xtal input (can be driven by an internal clock)
Xtal output (output floating when XIN driven by external clock)
Digital ground
3.3V digital supply
SCI transmit output (open drain)
SCI receive input (Schmitt trigger output)
Programmable IO pin + interrupt (open drain)
SCI baud rate selection
SCI baud rate selection
Programmable IO pin (open drain)
Master reset bar (Schmitt trigger input, active low)
Test enable (internal pull down)
TX enable bar (open drain)
Transmitter output
Automatic level control input
3.3V analog supply
7.1 Pin 1: VSSA
VSSA is the analog ground supply pin. It is strongly recommended putting a decoupling capacitance between this pin and the VDDA
pin. This capacitance value is: 100nF ±10 percent ceramic. Connection path of the capacitance to the VSSA and VDDA on the PCB
should be kept as short as possible in order to minimize the serial resistance.
7.2 Pin 2: RX_OUT
RX_OUT is the output analog pin of the receiver low noise input op-amp. This op-amp is in a negative feedback configuration. To know
how to use this pin, refer to the explanations given for pin RX_IN.
7.3 Pin 3: RX_IN
RX_IN is the positive analog input pin of the receiver low noise input op-amp. Together with the pins two and three, an active high pass
filter is realized. This filter removes the main frequency (50 or 60Hz) from the received signal. The filter characteristics are determined
by external capacitors and resistors. Typical values are given in Table 2. For these values and after this filter, a typical attenuation of
80dB at 50 or 60Hz is obtained. Table 2 represents external components connection. The present construction supposes the presence
of a previous formed with the coupling transformer and a parallel capacitance is placed on the mains. This last one performs a typical
attenuation of 60dB. The combined effect of the two filters decreases the voltage level of the main frequency well below the sensitivity
of the AMIS-30585.
Rev. 2 | Page 5 of 23 | www.onsemi.com
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