ISL59482_14 Datasheet, PDF (1/15 Pages) Intersil Corporation – Dual, 500MHz Triple, Multiplexing Amplifiers

Dual, 500MHz Triple, Multiplexing Amplifiers
ISL59482
The ISL59482 contains two independent fixed gain of 2 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 unneeded circuitry in power
sensitive applications. With both EN pins pulled high, the
ISL59482 enters a standby power mode consuming just
34mW.
TABLE 1. CHANNEL SELECT LOGIC TABLE ISL59482
S1-1, 2 S0-1, 2 EN1, 2 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
X
X
0
1
High Z
Features
• Dual, triple 4:1 multiplexers for RGB
• 520MHz bandwidth into 500Ω load
• ±1600 V/µs slew rate
• 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 fixed gain-of-2
• High impedance outputs (HIZ)
• Power-down mode (EN)
• ±5V operation
• Supply current 16mA/Ch maximum
• Pb-free (RoHS compliant)
Applications
• HDTV/DTV analog inputs
• Video projectors, computer monitors
• Set-top boxes
• Security video
• Broadcast video equipment
S0-1
S1-1
DECODE1
HIZ1
EN1
S0-2
S1-2
DECODE2
HIZ2
EN2
EN0-1
EN1-1
EN2-1
EN3-1
IN0(A1, B1, C1)
IN1(A1, B1, C1)
IN2(A1, B1, C1)
IN3(A1, B1, C1)
AMPLIFIER1 BIAS
EN0-2
EN1-2
EN2-2
EN3-2
IN0(A2, B2, C2)
IN1(A2, B2, C2)
IN2(A2, B2, C2)
IN3(A2, B2, C2)
AMPLIFIER2 BIAS
+-
OUT(A1, B1, C1)
OUT(A2, B2, C2)
+-
FIGURE 1. ISL59482 FUNCTIONAL DIAGRAM
August 8, 2014
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
FN6209.4
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