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PDF AD8197B Data sheet ( Hoja de datos )
| Número de pieza | AD8197B | |
| Descripción | 4:1 HDMI/DVI Switch | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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1. AD8197B  Hay una vista previa y un enlace de descarga de AD8197B (archivo pdf) en la parte inferior de esta página. Total 28 Páginas | ||
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4:1 HDMI/DVI Switch with Equalization
AD8197B
FEATURES
4 inputs, 1 output HDMI/DVI links
Enables HDMI 1.3-compliant receiver
Pin-to-pin compatible with the AD8197A
4 TMDS channels per link
Supports 250 Mbps to 2.25 Gbps data rates
Supports 25 MHz to 225 MHz pixel clocks
www.DataSheet4U.cEoqmualized inputs allow use of long HDMI cables
(20 meters at 2.25 Gbps)
Fully buffered unidirectional inputs/outputs
Per input switchable, 50 Ω on-chip terminations
Switchable output 50 Ω on-chip terminations
Pre-emphasized outputs
Low added jitter
Single-supply operation (3.3 V)
4 auxiliary channels per link
Bidirectional unbuffered inputs/outputs
Flexible supply operation (3.3 V to 5 V)
HDCP standard compatible
Allows switching of DDC bus and 2 additional signals
Output disable feature
Reduced power dissipation
Removable output termination
Allows building of larger arrays
Two AD8197Bs support HDMI/DVI dual link
Standards compatible: HDMI receiver, HDCP, DVI
Serial (I2C slave) and parallel control interface
100-lead, 14 mm × 14 mm LQFP, Pb-free package
APPLICATIONS
Multiple input displays
Projectors
A/V receivers
Set-top boxes
Advanced television (HDTV) sets
TYPICAL APPLICATION
MEDIA CENTER
HDTV SET
GAME CONSOLE
SET-TOP BOX
HDMI
RECEIVER
AD8197B
DVD PLAYER
04:20
Figure 1. Typical HDTV Application
FUNCTIONAL BLOCK DIAGRAM
PARALLEL
SERIAL
2
2
I2C_SDA
I2C_SCL
I2C_ADDR[2:0]
VTTI
3
CONFIG
INTERFACE
RESET
CONTROL
LOGIC
AD8197B
AVCC
DVCC
AMUXVCC
AVEE
DVEE
IP_A[3:0] +
IN_A[3:0] –
IP_B[3:0] +
IN_B[3:0]
IP_C[3:0]
+–
IN_C[3:0] –
IP_D[3:0] +
IN_D[3:0] –
4
4
4
4
4
4 EQ
4
4
SWITCH
CORE
PE
4
4
HIGH SPEED BUFFERED
VTTO
+ OP[3:0]
– ON[3:0]
VTTI
AUX_A[3:0]
AUX_B[3:0]
AUX_C[3:0]
AUX_D[3:0]
4
4
4
SWITCH
CORE
4
4
LOW SPEED UNBUFFERED
BIDIRECTIONAL
AUX_COM[3:0]
Figure 2.
GENERAL DESCRIPTION
The AD8197B is an HDMI™/DVI switch featuring equalized
TMDS® inputs and pre-emphasized TMDS outputs, ideal for
systems with long cable runs. The AD8197B offers individual
control of the on/off state of the TMDS input termination
resistors via I2C® control. Outputs can be set to a high
impedance state to reduce the power dissipation and/or to allow
the construction of larger arrays using the wire-OR technique.
The AD8197B is provided in a 100-lead LQFP, Pb-free, surface-
mount package, specified to operate over the −40°C to +85°C
temperature range.
PRODUCT HIGHLIGHTS
1. Supports data rates up to 2.25 Gbps, enabling 1080p deep
color (12-bit color) HDMI formats and greater than UXGA
(1600 × 1200) DVI resolutions.
2. Input cable equalizer enables use of long cables at the input
(more than 20 meters of 24 AWG cable at 2.25 Gbps).
3. Auxiliary switch routes a DDC bus and two additional signals
for a single-chip, HDMI 1.3 receive-compliant solution.
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
©2008 Analog Devices, Inc. All rights reserved.
1 page  
ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter
AVCC to AVEE
DVCC to DVEE
DVEE to AVEE
VTTI
VTTO
AMUXVCC
Internal Power Dissipation
High Speed Input Voltage
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High Speed Differential Input Voltage
Low Speed Input Voltage
I2C and Parallel Logic Input Voltage
Storage Temperature Range
Operating Temperature Range
Junction Temperature
Rating
3.7 V
3.7 V
±0.3 V
AVCC + 0.6 V
AVCC + 0.6 V
5.5 V
2.2 W
AVCC − 1.4 V < VIN <
AVCC + 0.6 V
2.0 V
DVEE − 0.3 V < VIN <
AMUXVCC + 0.6 V
DVEE − 0.3 V < VIN <
DVCC + 0.6 V
−65°C to +125°C
−40°C to +85°C
150°C
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
AD8197B
THERMAL RESISTANCE
θJA is specified for the worst-case conditions: a device soldered
in a 4-layer JEDEC circuit board for surface-mount packages.
θJC is specified for no airflow.
Table 3. Thermal Resistance
Package Type
θJA θJC Unit
100-Lead LQFP
56 19 °C/W
MAXIMUM POWER DISSIPATION
The maximum power that can be safely dissipated by the AD8197B
is limited by the associated rise in junction temperature. The
maximum safe junction temperature for plastic encapsulated
devices is determined by the glass transition temperature of the
plastic, approximately 150°C. Temporarily exceeding this limit
may cause a shift in parametric performance due to a change in
the stresses exerted on the die by the package.
Exceeding a junction temperature of 175°C for an extended
period can result in device failure. To ensure proper operation, it
is necessary to observe the maximum power rating as determined
by the coefficients in Table 3.
ESD CAUTION
Rev. 0 | Page 5 of 28
5 Page 
AD8197B
TA = 27°C, AVCC = 3.3 V, VTTI = 3.3 V, VTTO = 3.3 V, DVCC = 3.3 V, AMUXVCC = 5 V, AVEE = 0 V, DVEE = 0 V, differential input
swing = 1000 mV, TMDS outputs terminated with external 50 Ω resistors to 3.3 V, pattern = PRBS 27 − 1, data rate = 2.25 Gbps, unless
otherwise noted.
0.6
2m CABLE = 30AWG
5m TO 20m CABLES = 24AWG
0.5
0.6
2m CABLE = 30AWG
5m TO 20m CABLES = 24AWG
0.5
0.4
0.3
0.2
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0.1
2.25Gbps
EQ = 6dB
1.65Gbps
EQ = 6dB
2.25Gbps
EQ = 12dB
1.65Gbps
EQ = 12dB
0
0 5 10 15 20 25
HDMI CABLE LENGTH (m)
Figure 14. Jitter vs. Input Cable Length (See Figure 4 for Test Setup)
0.4
1.65Gbps, PE OFF
0.3
2.25Gbps, PE OFF
0.2
2.25Gbps, PE MAX
0.1
1.65Gbps, PE MAX
0
0 5 10 15 20
HDMI CABLE LENGTH (m)
Figure 17. Jitter vs. Output Cable Length (See Figure 9 for Test Setup)
50
45
40
35
30
25
480p
20
480i
15
1080i/720p
1080p
8-BIT
1.65Gbps
1080p
12-BIT
DJ (p-p)
10
5 RJ (rms)
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4
DATA RATE (Gbps)
Figure 15. Jitter vs. Data Rate
1200
1000
800
600
400
200
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4
DATA RATE (Gbps)
Figure 18. Eye Height vs. Data Rate
50
45
40
35
30
25
20
15
10
5
0
3.0
DJ (p-p)
RJ (rms)
3.1 3.2 3.3 3.4
SUPPLY VOLTAGE (V)
Figure 16. Jitter vs. Supply Voltage
3.5
3.6
800
700
600
500
400
300
200
100
0
2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6
SUPPLY VOLTAGE (V)
Figure 19. Eye Height vs. Supply Voltage
Rev. 0 | Page 11 of 28
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet AD8197B.PDF ] | |
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