DATASHEET
ISL59420 FN7459
Rev 2.00
July 3, 2012 400MHz Multiplexing Amplifier
The ISL59420 is a 420MHz bandwidth 2:1 multiplexing
amplifier designed primarily for video switching. This Mux-amp
has user-settable gain and also feature a high speed three-state
function to enable the output of multiple devices to be wired
together. All logic inputs have pull-downs to ground and may be
left floating. The ENABLE pin, when pulled high, sets the
ISL59420 to the low current power-down mode for power
sensitive applications -consuming just 5mW. Features 420MHz (-3dB) Bandwidth (AV = 1, VOUT = 400mVP-P) 165MHz (-3dB) Bandwidth (AV = 2, VOUT = 2VP-P) Slew Rate (AV = 1, RL = 500пЃ—пЂ¬пЂ VOUT = 4V) 966V/Вµs Slew Rate (AV = 2, RL = 500пЃ—пЂ¬пЂ VOUT = 5V) .1462V/Вµs Selectable Gain High Speed Three-State Output (HIZ) TABLE 1. CHANNEL SELECT LOGIC TABLE Low Current Power-Down . 5mW S0 ENABLE HIZ OUTPUT 0 0 0 IN0 Pb-Free (RoHS Compliant) 1 0 0 IN1 Applications X 1 X Power Down X 0 1 High Z HDTV/DTV Analog Inputs Video Projectors Computer Monitors Related Literature Set-Top Boxes See AN1187, “ISL59420/21EVAL1 Evaluation Board User’s
Guide” Security Video Broadcast Video Equipment IN-S0
EN0
DECODE IN0
EN1 IN1 + OUT AMPLIFIER BIAS
HIZ ENABLE
ENABLE pin must be low in order to activate the HIZ state FIGURE 1. FUNCTIONAL DIAGRAM FN7459 Rev 2.00
July 3, 2012 Page 1 of 13 ISL59420 Pin Configuration
ISL59420
(10 LD MSOP)
TOP VIEW
S0 1 GND 2 IN0 3 ENABLE …
