MAX4549
MAX4549 is Triple 3 x 2 Audio/Video Crosspoint Switches manufactured by Maxim Integrated.
- Part of the MAX4548 comparator family.
- Part of the MAX4548 comparator family.
Description
The MAX4548/MAX4549 serial-interface, programmable, triple 3x2 audio/video crosspoint switches are ideal for multimedia applications. The devices include three crosspoint switch matrices, each containing three inputs and two outputs. To improve off-isolation, each switch matrix has a shunt input and each output is selectively programmable for clickless or regular-mode operation. A selectable set of internal resistive voltage dividers supplies DC bias for each output when using AC-coupled inputs. To improve crosstalk, the voltage dividers include four externally accessible bypass points.
The MAX4548/MAX4549 feature
35Ω max on-resistance, 7Ω on-resistance matching between channels, 5Ω on-resistance flatness, and 0.07% total harmonic distortion (THD). Additionally, they feature off-isolation of -85d B at 20k Hz and -72d B at 10MHz, with crosstalk of -85d B at 20k Hz and -55d B at 10MHz. The MAX4548 uses a 2-wire I2C™-patible serial interface, while the MAX4549 uses a 3-wire SPI™/QSPI™/MICROWIRE™patible serial interface. These parts are available in 36-pin SSOP packages and are specified for the extended (-40°C to +85°C) operating range.
Applications
Set-Top Boxes PC Multimedia Boards Video Conferencing Systems High-End Audio Systems Security Systems
PART MAX4548EAX MAX4549EAX
Ordering Information
TEMP. RANGE -40°C to +85°C -40°C to +85°C
PIN-PACKAGE 36 SSOP 36 SSOP
Functional Diagram appears at end of data sheet.
SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp. I2C is a trademark of Philips Corp.
Features o Selectable Soft-Switching Mode for “Clickless” Audio Operation o 22Ω Typical On-Resistance (+5V Supply) o 5Ω Typical On-Resistance Matching Between
Channels o 2Ω Typical On-Resistance Flatness o Audio Performance
-85d B Off-Isolation at 20k Hz -85d B Crosstalk at 20k Hz 0.07% THD with 600Ω Load o Video Performance -72d B Off-Isolation at 10MHz -55d B Crosstalk at 10MHz o Serial Interface 2-Wire...
