參數(shù)資料
型號(hào): AFE031AIRGZR
廠商: Texas Instruments
文件頁(yè)數(shù): 27/57頁(yè)
文件大小: 0K
描述: IC AFE POWERLINE COMM 48VQFN
標(biāo)準(zhǔn)包裝: 2,500
位數(shù): 10
通道數(shù): 1
電壓 - 電源,模擬: 3 V ~ 3.6 V
電壓 - 電源,數(shù)字: 3 V ~ 3.6 V
封裝/外殼: 48-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 48-VQFN 裸露焊盤(7x7)
包裝: 帶卷 (TR)
0
20
40
-
Gain
(dB)
10
100
1k
10k
100k
1M
10M
100M
Frequency (Hz)
High-pass cutoff determined by:
f
=
HP
1
2
R
C
p
IN
EXT
where:
R
= Input resistance of ERx = 78 k
C
= External capacitance
W
IN
EXT
Time (s)
E_Tx_Out
E_Tx_In
E_Tx_Clk
3.3
0
SBOS531D – AUGUST 2010 – REVISED MAY 2012
ETx and ERx Blocks
The AFE031 contains a two-wire transmitter block, ETx, and a two-wire receiver block, ERx. These blocks
support communications that use amplitude shift keying (ASK) with on-off keying (OOK) modulation.
The ETx block is a gated driver that allows for transmission of a carrier input signal and modulating input signal.
For typical applications, a 50-kHz square wave carrier signal is applied to E_Tx_Clk while the modulating signal
is applied to E_Tx_In. The output (E_Tx_Out) is then in a high-impedance state when E_Tx_In is '1'. Figure 42
shows the relationship between E_Tx_Clk, E_Tx_In, and E_Tx_Out.
Figure 42. ETx Block Transfer Function
The ERx Block consists of a low-pass analog filter configured in an inverting gain of –4.5 db. This block, along
with an external capacitor, can be used to create a passband filter response as shown in Figure 43.
Figure 43. ERx Block Frequency Response
Copyright 2010–2012, Texas Instruments Incorporated
33
Product Folder Link(s): AFE031
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