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PDF ISL59481 Data sheet ( Hoja de datos )
| Número de pieza | ISL59481 | |
| Descripción | Multiplexing Amplifiers | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
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®
Data Sheet
December 22, 2006
ISL59481
FN6208.3
Dual, 500MHz Triple, Multiplexing
Amplifiers
The ISL59481 contains two independent unity gain triple 4:1
MUX amplifiers that feature high slew rate and excellent
bandwidth for RGB video switching. Each RGB 4:1 MUX
contains binary coded, channel select logic inputs (S0, S1),
and separate logic inputs for High Impedance output (HIZ)
and power-down (EN) modes. The HIZ state presents a high
impedance at the output so that both RGB MUX outputs can
be wired together to form an 8:1 RGB MUX amplifier or they
can be used in R-R, G-G, and B-B pairs to form a 4:1
differential input/output MUX. Separate power-down mode
controls (EN1, EN2) are included to turn off unused circuitry
in power sensitive applications. With both EN pins pulled
high, the ISL59481 enters a standby power mode -
consuming just 36mW.
Ordering Information
PART NUMBER
PART
TAPE & PACKAGE PKG.
(Note)
MARKING REEL (Pb-free) DWG. #
ISL59481IRZ
ISL59481 IRZ
- 48 Ld Exposed L48.7x7B
Pad 7x7 QFN
www.DataSheet4U.comISL59481IRZ-T13 ISL59481 IRZ
13” 48 Ld Exposed L48.7x7B
Pad 7x7 QFN
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100% matte
tin plate termination finish, which are RoHS compliant and compatible
with both SnPb and Pb-free soldering operations. Intersil Pb-free
products are MSL classified at Pb-free peak reflow temperatures that
meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
TABLE 1. CHANNEL SELECT LOGIC TABLE ISL59481
S1-1, 2 S0-1, 2 EN1, EN2 HIZ1, 2
OUTPUT1, 2
0 0 0 0 IN0 (A, B, C)
0 1 0 0 IN1 (A, B, C)
1 0 0 0 IN2 (A, B, C)
1 1 0 0 IN3 (A, B, C)
X X 1 X Power-down
XX 0 1
High Z
Features
• Dual, triple 4:1 multiplexers for RGB
• Externally configurable for various video MUX circuits
including
- 8:1 RGB MUX
- Two separate 4:1 RGB MUX
- 4:1 differential RGB video MUX
• Internally set gain-of-1
• High impedance outputs (HIZ)
• Power-down mode (EN)
• ±5V operation
• ±870V/µs slew rate
• 500MHz bandwidth
• Supply current 16mA/CH
• Pb-free plus anneal (RoHS compliant)
Applications
• HDTV/DTV analog inputs
• Video projectors
• Computer monitors
• Set-top boxes
• Security video
• Broadcast video equipment
Related Literature
• Application Note AN1235 “ISL59481EVAL1 Evaluation
Board User’s Guide”
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2006. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL59481
Typical Performance Curves VS = ±5V, RL = 500Ω to GND, TA = +25°C, unless otherwise specified. (Continued)
0.8 0
0.6
RL=500Ω
CL=1.5pF
-10
0.4
-20
INPUT X TO OUTPUT Y
CROSSTALK
-30
0.2 -40
0.0 -50
OFF ISOLATION
-0.2 -60 INPUT X TO OUTPUT X
-70
-0.4
-80 ²
-0.6 -90
-0.8
TIME (5ns/DIV)
FIGURE 5. TRANSIENT RESPONSE
-100
0.1M
1M
10M
100M
FREQUENCY (Hz)
FIGURE 6. CROSSTALK AND OFF ISOLATION
1G
20
10
PSRR (V+)
0
-10
-20 PSRR (V-)
-30
-40
-50
-60
-70
-80
0.3M
1M
10M
100M
FREQUENCY (Hz)
FIGURE 7. PSRR CHANNELS A, B, C
1G
S0, S1
50Ω
TERM.
VIN = 0V
0
0
VOUT A, B, C
20ns/DIV
FIGURE 8. CHANNEL TO CHANNEL SWITCHING GLITCH
VIN = 0V
S0, S1
50Ω
TERM.
VIN = 1V
ENABLE
50Ω
TERM.
VIN = 0V
0
0 VOUT A, B, C
20ns/DIV
FIGURE 9. CHANNEL TO CHANNEL TRANSIENT RESPONSE
VIN = 1V
5
0
VOUT A, B, C
0
20ns/DIV
FIGURE 10. ENABLE SWITCHING GLITCH VIN = 0V
FN6208.3
December 22, 2006
5 Page 
ISL59481
4:1 RGB Differential Video MUX
Connecting the channel select pins in parallel (S0-1 to S0-2
and S1-1 to S1-2) converts the 8 individual RGB video inputs
into 4 differential RGB input pairs. The amplifier RGB outputs
are similarly paired resulting in a fully differential 4:1 RGB
MUX amp shown in Figure 18. Connecting HIZ1 and HIZ2 to
+5V disables the 4:1 differential MUX, and enables the
connection of additional differential-connected MUX amplifiers
to the same outputs, thus allowing input expansion to 8:1 or
more.
+
CH0 -
CH0A - CH3A
CHANNELS B & C
NOT SHOWN
CHANNEL SELECT
LOGIC INPUTS
+
CH1 -
CH2 +
-
+
CH1 -
S0
S1
HIZ
ISL59481
1/3 MUX-AMP1
IN0A1
IN1A1
IN2A1
+1 OUTA1
IN3A1
S0-1
S1-1
CONTROL
LOGIC
HIZ1
IN0A2
IN1A2
IN2A2
IN3A2
1/3 MUX-AMP2
+1 OUTA2
S0-2
S1-2
HIZ2
CONTROL
LOGIC
+
OUTA
-
CHANNEL SELECT TRUTH TABLE
4:1 DIFFERENTIAL VIDEO MUX
S1 S0
OUTA, B, C
00
CH0A, B, C
01
CH1A, B, C
10
CH2A, B, C
11
CH3A, B, C
FIGURE 18. APPLICATION CIRCUIT FOR 4:1 RGB DIFFERENTIAL VIDEO MUX
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
11 FN6208.3
December 22, 2006
11 Page | ||
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| PDF Descargar | [ Datasheet ISL59481.PDF ] | |
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