參數資料
型號: MAX3814CHJ+
廠商: Maxim Integrated Products
文件頁數: 14/14頁
文件大小: 0K
描述: IC DRVR/EQUALIZER CABLE 32-TQFP
產品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 360
類型: 驅動器
驅動器/接收器數: 4/0
電源電壓: 3 V ~ 3.6 V
安裝類型: 表面貼裝
封裝/外殼: 32-TQFP
供應商設備封裝: 32-TQFP(5x5)
包裝: 托盤
產品目錄頁面: 1423 (CN2011-ZH PDF)
Output Enable Control
The ENABLE pin is an LVTTL input that allows the user
to shut off the output-collector currents, thereby reduc-
ing power consumption of the device. Forcing this pin
high turns the output currents off; forcing this pin low
(normal operation) turns the currents on.
Figure 5 shows a simplified circuit for both the output
and enable controls.
Applications Information
Figure 6a shows a typical TMDS channel from a graph-
ics board of a laptop computer to a remote display.
Maintaining a 100
Ω differential impedance for this
channel has its challenges. Besides proper board lay-
out of traces, there are multiple reflection points (A to
H). For example, at interface F in Figure 6a, a circular
arrow shows a reflection at the connector of a remote
display. When these reflections hit another interface,
they reflect again and thus become echoes corrupting
the incident signal. In Figure 6b, the MAX3814 is used
to equalize losses, isolate reflections, and redrive the
transmission line with high fidelity.
MAX3814
DVI/HDMI TMDS FR-4 and
Cable Equalizer/Driver
_______________________________________________________________________________________
9
50
Ω
200
Ω
BACK TERMINATION
50
Ω
VT
TRANSIENT
SUPRESSOR
CLAMP
OUT_+
OUT_-
5mA
ENABLE = HIGH
LEVEL = LOW
10mA
Figure 4. Simplified Output Circuit with Back Termination
Resistor
TRANSIENT
SUPRESSOR
CLAMP
50k
Ω
44k
Ω
VCC
44k
Ω
88k
Ω
LEVEL,
ENABLE
INPUTS
Figure 5. Simplified Input Circuitry for Output Level (LEVEL)
and Enable (ENABLE) Control
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相關代理商/技術參數
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