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PDF AD8191 Data sheet ( Hoja de datos )
| Número de pieza | AD8191 | |
| Descripción | HDMI/DVI Switch | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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4:1 HDMI/DVI Switch with Equalization
AD8191
FEATURES
Four inputs, one output HDMI™/DVI links
Four TMDS channels per link
Supports 250 Mbps to 1.65 Gbps data rates
Supports 25 MHz to 165 MHz pixel clocks
Equalized inputs for operation with long HDMI cables
(20 meters at 1080p)
Fully buffered unidirectional inputs/outputs
Globally switchable, 50 Ω on-chip terminations
Pre-emphasized outputs
Low added jitter
Single-supply operation (3.3 V)
Four 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 two additional signals
Multiple channel bundling modes
1x (4:1) HDMI/DVI link switch (default)
2x (8:1) TMDS channel and auxiliary signal switch
1x (16:1) TMDS channel and auxiliary signal switch
Output disable feature
Reduced power dissipation
Removable output termination
Allows building of larger arrays
Two AD8191s support HDMI/DVI dual-link
Standards compatible: HDMI receiver, DVI, HDCP
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
GENERAL DESCRIPTION
The AD8191 is a HDMI/DVI switch featuring equalized TMDS
inputs and pre-emphasized TMDS outputs, ideal for systems
with long cable runs. Outputs can be set to a high impedance
state to reduce the power dissipation and/or allow the construc-
tion of larger arrays using the wire-OR technique. Flexible
channel bundling modes (for both the TMDS channels and the
auxiliary signals) allow the AD8191 to be configured as a 4:1 single
HDMI/DVI link switch, a dual 8:1 switch, or a single 16:1 switch.
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.
FUNCTIONAL BLOCK DIAGRAM
PARALLEL
SERIAL
2
2
I2C_SDA
I2C_SCL
I2C_ADDR[2:0]
VTTI
3
CONFIG
INTERFACE
RESET
CONTROL
LOGIC
AD8191
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] –
VTTI
AUX_A[3:0]
AUX_B[3:0]
AUX_C[3:0]
AUX_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]
4
4
4
SWITCH
CORE
4
4
LOW SPEED UNBUFFERED
BIDIRECTIONAL
Figure 1.
AUX_COM[3:0]
TYPICAL APPLICATION
MEDIA CENTER
HDTV SET
GAME CONSOLE
SET-TOP BOX
HDMI
RECEIVER
AD8191
DVD PLAYER
01:18
Figure 2. Typical HDTV Application
The AD8191 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 1.65 Gbps, enabling 1080p HDMI
formats and 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 1080p).
3. Auxiliary switch routes a DDC bus and two additional signals
for a single-chip, HDMI 1.2a receive-compliant solution.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2006 Analog Devices, Inc. All rights reserved.
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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
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.
AD8191
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 AD8191
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
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AD8191
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 = 1.65 Gbps, unless
otherwise noted.
0.6
2m CABLE = 30AWG
5m TO 10m CABLES = 28AWG
15m TO 30m CABLES = 24AWG
0.5
0.6
2m CABLE = 30AWG
5m TO 10m CABLES = 28AWG
15m TO 20m CABLES = 24AWG
0.5
0.4 720p,
EQ = 12dB
0.3
1080p,
EQ = 12dB
1.65Gbps,
0.2 EQ = 12dB
480p,
0.1 EQ = 12dB
0
0 5 10 15 20 25 30 35
HDMI CABLE LENGTH (m)
Figure 14. Jitter vs. Input Cable Length (See Figure 4 for Test Setup)
60
0.4
1080p, PE OFF
0.3
720p, PE OFF
1080p, MAX PE
0.2
720p, MAX PE
0.1 480p, PE OFF
480p, MAX PE
0
0 5 10 15 20 25
HDMI CABLE LENGTH (m)
Figure 17. Jitter vs. Output Cable Length (See Figure 9 for Test Setup)
1200
50 1000
40 800
30
480p
20 480i
1080i/720p
1080p
1.65Gbps
DJ (p-p)
10
RJ (rms)
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8
DATA RATE (Gbps)
Figure 15. Jitter vs. Data Rate
70
60
50
40
30
20
10
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
600
400
200
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8
DATA RATE (Gbps)
Figure 18. Eye Height vs. Data Rate
800
700
600
500
400
300
200
100
0
3.0
3.1 3.2 3.3 3.4 3.5
SUPPLY VOLTAGE (V)
Figure 19. Eye Height vs. Supply Voltage
3.6
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| Páginas | Total 32 Páginas | |
| PDF Descargar | [ Datasheet AD8191.PDF ] | |
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