MAX4901:Low-RON, Dual-SPST/Single-SPDT Clickless Switches with Negative Rail Capability

The MAX4901–MAX4905 switches feature negative signal capability that allows signals below ground to pass through without distortion. The MAX4901/MAX4902 are a dual SPST (single-pole/single-throw) and the MAX4903/MAX4904/MAX4905 are a single SPDT (single-pole/double-throw) configuration. These analog switches operate from a single +1.8V to +5.5V supply and have low 0.6Ω on-resistance, making them ideal for switching audio signals. The MAX4905 includes a comparator that can be used for headphone detection or mute/send key function. The MAX4902/MAX4904/MAX4905 have internal shunt resistors to automatically discharge any capacitance at the NO_ and NC connection points. This reduces click-and-pop sounds that occur when switching audio signals between pre-charged points. A break-before-make feature and auto-discharge also help to reduce popping. These SPST and SPDT switches are available in space-saving 8-pin TDFN and 9-bump UCSP™ packages and operate over the -40°C to +85°C extended temperature range.

Key Features
  • Distortion-Free Signal Throughput Down to VCC - 5.5V
  • Comparator for Headphone or Mute Detection (MAX4905)
  • Clickless Switches with Internal Shunt Resistors (MAX4902/MAX4904/MAX4905)
  • 0.6Ω (typ) Low On-Resistance (RON)
  • 0.25Ω On-Resistance Flatness
  • +1.8V to +5.5V Supply Voltage
  • 0.04% THD
MAX4901, MAX4902, MAX4903, MAX4904, MAX4905: Typical Operating Circuit
MAX4901, MAX4902, MAX4903, MAX4904, MAX4905: Typical Operating Circuit
Applications/Uses
  • Cell Phones
  • MP3 Players
  • Notebook Computers
  • PDAs and Handheld Devices
DataSheet
titleDownload file
MAX4901-MAX4905 Data SheetMAX4901-MAX4905.pdf
Parametrics
Part NumberProtocolConfig.ChannelsNormal PositionVSUPPLY (Single)
(V)
VSUPPLY (Single)
(V)
VSIGNAL
(V)
VSIGNAL
(V)
Dynamic Range (max)
(V)
RON
(Ω)
RFLAT(ON)
(Ω)
RFLAT(ON)
(Ω)
Bandwidth
(MHz)
IL(OFF)
(nA)
tON
(ns)
tOFF
(ns)
QINJECTION
(pC)
Package/PinsBudgetary
Price
minmaxminmaxmaxmaxtypmaxmaxminmaxSee Notes
MAX4901AudioSPST2Open1.85.5-3.75.55.510.250.5276100100125TDFN-EP/8
UCSP/9
$0.96 @1k
MAX49032-to-1
SPDT
1-TDFN-EP/8
UCSP/9
$1.17 @1k
MAX49042-to-1
SPDT
1-TDFN-EP/8
UCSP/9
$0.96 @1k
Quality and Environmental Data
Related Products
  • MAX4765:Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability
  • MAX4763:Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability
  • MAX4764:Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability
  • MAX4762:Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX4901EBL+ActiveUCSP,;9 pin;2.5 mm²-40°C to +85°CLead Free
MAX4901EBL+TActiveUCSP,;9 pin;2.5 mm²-40°C to +85°CLead Free
MAX4901EBL-TNo Longer AvailableMAX4901EBL+TUCSP,;9 pin;2.5 mm²-40°C to +85°CNo
MAX4901ETA+ActiveTDFN-EP,;8 pin;9.6 mm²-40°C to +85°CLead Free
MAX4901ETA+TActiveTDFN-EP,;8 pin;9.6 mm²-40°C to +85°CLead Free
MAX4901ETA-TNo Longer AvailableMAX4901ETA+TTDFN-EP,;8 pin;9.6 mm²-40°C to +85°CNo
MAX4901-MAX4905.pdf MAX4904
MAX4901.pdf MAX4901
MAX4901-MAX4905.pdf MAX4901