MAX4570:Serially Controlled, Dual 4x2, Clickless Audio/Video Analog Crosspoint Switches

The MAX4550/MAX4570 serial-interface, programmable, 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 additional crosspoint inputs SA and SB as shunts. Each output 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 80Ω on-resistance, 10Ω on-resistance matching between channels, 5Ω on-resistance flatness, and 0.014% total harmonic distortion. 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™-compatible 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.

Key Features
  • Selectable Soft Switching Mode for Clickless Audio Operation
  • 43Ω Typical On-Resistance (±5V Supplies)
  • 5Ω Typical On-Resistance Matching Between Channels
  • 4Ω Typical On-Resistance Flatness
  • 0.014% Total Harmonic Distortion with 1kΩ Load
  • -110dB Off-Isolation at 20kHz
  • -78dB Off-Isolation at 4MHz
  • -95dB Crosstalk at 20kHz
  • -54dB Crosstalk at 4MHz
  • Serial Interface
    • 2-Wire, Fast-Mode, I²C-Compatible (MAX4550)
    • 3-Wire, SPI/QSPI/MICROWIRE-Compatible (MAX4570)
  • Four Auxiliary Outputs that Extend µP Ports
  • Single-Supply Operation: +2.7V to +5.5V
  • Dual-Supply Operation: ±2.7V to ±5.5V
MAX4550, MAX4570: Pin Configuration
MAX4550, MAX4570: Pin Configuration
Applications/Uses
  • High-End Audio Systems
  • PC Multimedia Boards
  • Set-Top Boxes
  • Video Conferencing Systems
DataSheet
titleDownload file
MAX4550-MAX4570 Data SheetMAX4550-MAX4570.pdf
Parametrics
Part NumberFunctionsConfig.RON
(Ω)
InterfaceILEAK(OFF)
(nA)
tON
(ns)
Off Iso.
(dB)
Crosstalk
(dB)
VSUPPLY
(V)
VSUPPLY (Dual)
(±V)
Package/PinsBudgetary
Price
maxmaxmin@ Freq.@ Freq.DualSee Notes
MAX4550Crosspoint2 x 4-to-2802-Wire
Serial
10900-78@4MHz-54@4MHz2.7 to 5.52.7 to 5.5SOIC(W)/28
SSOP/28
$5.32 @1k
MAX45703-Wire
Serial
SOIC(W)/28
SSOP/28
$3.71 @1k
Design kits & evaluation modules
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX4570CAINo Longer AvailableMAX4570CAI+SSOP,;28 pin;81.6 mm²0°C to +70°CSee data sheet
MAX4570CAI+ActiveSSOP,;28 pin;81.6 mm²0°C to +70°CLead Free
MAX4570CAI+TActiveSSOP,;28 pin;81.6 mm²0°C to +70°CLead Free
MAX4570CAI-TNo Longer AvailableMAX4570CAI+TSSOP;28 pin0°C to +70°CSee data sheet
MAX4570CEINo Longer Available0°C to +70°CSee data sheet
MAX4570CWINo Longer AvailableMAX4570CWI+SOIC(W),;28 pin;192.8 mm²0°C to +70°CNo
MAX4570CWI+ActiveSOIC(W),;28 pin;192.8 mm²0°C to +70°CLead Free
MAX4570CWI+TActiveSOIC(W),;28 pin;192.8 mm²0°C to +70°CLead Free
MAX4570CWI-TNo Longer AvailableMAX4570CWI+TW.SO;28 pin0°C to +70°CSee data sheet
MAX4570EAINo Longer AvailableMAX4570EAI+SSOP,;28 pin;81.6 mm²-40°C to +85°CSee data sheet
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX4570EAI+ActiveSSOP,;28 pin;81.6 mm²-40°C to +85°CLead Free
MAX4570EAI+TActiveSSOP,;28 pin;81.6 mm²-40°C to +85°CLead Free
MAX4570EAI-TNo Longer AvailableMAX4570EAI+TSSOP;28 pin-40°C to +85°CSee data sheet
MAX4570EEINo Longer Available-40°C to +85°CSee data sheet
MAX4570EWINo Longer AvailableSOIC(W),;28 pin;192.8 mm²-40°C to +85°CNo
MAX4570EWI-TNo Longer AvailableW.SO;28 pin-40°C to +85°CSee data sheet
MAX4550-MAX4570.pdf MAX4570
MAX4550-MAX4570.pdf MAX4570