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MAX4550CAI Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX4550CAI Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 16 page For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. General Description The MAX4550/MAX4570 serial-interface, programma- ble, dual 4x2 audio/video crosspoint switches are ideal for multimedia applications. Each device contains two identical crosspoint switch arrays, each with four inputs and two outputs. To improve off-isolation, use the addi- tional crosspoint inputs SA and SB as shunts. Each out- put is selectively programmable for clickless or regular mode operation. A set of internal resistive voltage- dividers supplies DC bias for each output when using AC-coupled inputs. Additionally, four auxiliary outputs control additional circuitry via the MAX4550/MAX4570’s 2-wire or 3-wire interface. The MAX4550/MAX4570 feature 80 Ω on-resistance, 10Ω on-resistance matching between channels, 5 Ω on- resistance flatness, and 0.014% total harmonic distor- tion. Additionally, they feature off-isolation of at least -110dB in the audio frequency range and -78dB at 4MHz, with -95dB crosstalk in the audio frequency range and -54dB at 4MHz. The MAX4550 uses a 2-wire I2C-compatible serial interface, while the MAX4570 uses a 3-wire SPI™/QSPI™ or MICROWIRE™-compati- ble serial interface. These parts are available in 28-pin SSOP and wide SO packages and are tested over either the commercial (0°C to +70°C) or extended (-40°C to +85°C) operating temperature range. Applications Set-Top Boxes PC Multimedia Boards High-End Audio Systems Video Conferencing Systems Features o Selectable Soft Switching Mode for Clickless Audio Operation o 43 Ω Typical On-Resistance (±5V Supplies) o 5 Ω Typical On-Resistance Matching Between Channels o 4 Ω Typical On-Resistance Flatness o 0.014% Total Harmonic Distortion with 1k Ω Load o -110dB Off-Isolation at 20kHz -78dB Off-Isolation at 4MHz o -95dB Crosstalk at 20kHz -54dB Crosstalk at 4MHz o Serial Interface 2-Wire, Fast-Mode, I2C-Compatible (MAX4550) 3-Wire, SPI/QSPI/MICROWIRE-Compatible (MAX4570) o Four Auxiliary Outputs that Extend µP Ports o Single-Supply Operation: +2.7V to +5.5V Dual-Supply Operation: ±2.7V to ±5.5V Serially Controlled, Dual 4x2, Clickless Audio/Video Analog Crosspoint Switches ________________________________________________________________ Maxim Integrated Products 1 28 27 26 25 24 23 22 21 20 19 18 17 16 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 SA NO2B NO2A V- V+ NO1B SDA (DIN) NO1A GND COM1A Q3 COM1B Q2 A1 (DOUT) SCL (SCLK) A0 (CS) Q1 COM2B ( ) ARE FOR MAX4570. Q0 COM2A V+ NO4B NO4A BIASL BIASH NO3B NO3A SB SO/SSOP TOP VIEW MAX4550 MAX4570 19-1397; Rev 0; 10/98 PART MAX4550CAI MAX4550CWI MAX4550EAI -40°C to +85°C 0°C to +70°C 0°C to +70°C TEMP. RANGE PIN-PACKAGE 28 SSOP 28 Wide SO 28 SSOP EVALUATION KIT AVAILABLE Functional Diagram appears at end of data sheet. Pin Configuration Ordering Information MAX4550EWI -40°C to +85°C 28 Wide SO MAX4570CAI MAX4570CWI MAX4570EAI -40°C to +85°C 0°C to +70°C 0°C to +70°C 28 SSOP 28 Wide SO 28 SSOP MAX4570EWI -40°C to +85°C 28 Wide SO I2C is a trademark of Philips Corp. SPI/QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp. |
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