AD8122ACPZ Analog Devices, AD8122ACPZ Datasheet

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AD8122ACPZ

Manufacturer Part Number
AD8122ACPZ
Description
TRIPLE CAT5 CABLE EQUALIZER
Manufacturer
Analog Devices
Datasheet

Specifications of AD8122ACPZ

Pack_quantity
490
Comm_code
85423990
Lead_time
42
Data Sheet
FEATURES
Compensates cables up to 300 meters for wideband video
Fast time domain performance
3 frequency response gain adjustment pins
Selectable for UTP or coaxial compensation
DC output offset adjustment pin (V
Low output offset voltage: ±4 mV at G = 1
Compensates both RGB and YPbPr
2 on-chip comparators with hysteresis can be used
Available in 40-lead, 6 mm × 6 mm LFCSP
APPLICATIONS
Keyboard-video-mouse (KVM)
Digital signage
RGB video over UTP cables
Professional video projection and distribution
HD video
Security video
GENERAL DESCRIPTION
The
equalizer that compensates for the transmission losses of UTP
cables up to 300 meters in length and coaxial cables up to
200 meters in length. Various gain stages are summed to best
approximate the inverse frequency response of the cable. Each
channel features a high impedance differential input with high
rejection of common-mode (CM) signals that is ideal for inter-
facing directly with the cable.
The
compensation, one LPF control input, an input to select UTP or
coaxial cable, and an input to adjust the dc output offset. The cable
compensation inputs are used to compensate for different cable
lengths: the V
peaking, and the V
compensate for the flat cable loss. The V
cutoff frequency of output low-pass filters on each channel.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
60 MHz equalized BW at 300 meters of UTP cable
120 MHz equalized BW at 150 meters of UTP cable
70 ns settling time to 1% at 300 meters of UTP cable
7 ns rise/fall times with 2 V step at 300 meters of UTP cable
High frequency peaking adjustment (V
Output low-pass filter cutoff adjustment (V
Broadband flat gain adjustment (V
for common-mode sync pulse extraction
AD8122
AD8122
is a high speed, triple differential receiver and
has two control inputs for optimal cable
PEAK
input controls the amount of high frequency
GAIN
input adjusts the broadband flat gain to
OFFSET
GAIN
FILTER
)
)
PEAK
input controls the
)
FILTER
)
300 Meter Adjustable Line Equalization
Triple Differential Receiver with
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
The selection of UTP or coaxial cable compensation responses
is determined by the binary COAX/ UTP input, which can be
left floating in UTP applications. The V
dc voltage at the output to be adjusted, which can be useful in
dc-coupled systems.
For added flexibility, the gain of each channel can be set to 1
or 2 using the associated gain control pin.
The
and is rated to operate over the extended temperature range
of −40°C to +85°C.
COAX/UTP
AD8122
+IN
+IN
–IN
–IN
CMP1
CMP1
CMP2
CMP2
+IN
–IN
+IN
–IN
–IN
+IN
G
G
R
R
B
B
FUNCTIONAL BLOCK DIAGRAM
is available in a 6 mm × 6 mm, 40-lead LFCSP
V
©2012 Analog Devices, Inc. All rights reserved.
PEAK
AD8122
Figure 1.
V
FILTER
V
OFFSET
OFFSET
V
GAIN
input allows the
AD8122
www.analog.com
OUT
GAIN
OUT
GAIN
OUT
GAIN
OUT
OUT
R
G
B
CMP1
CMP2
R
G
B

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