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MAX4745, MAX4745H
Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability
Negative Signal Handling and Audio Clickless/Popless Features in a Small, 10-Pin µDFN Package (2mm x 2mm)
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The MAX4744/MAX4744H/MAX4745/MAX4745H/MAX4746H dual SPDT (single-pole/double-throw) audio switches feature negative signal capability that allows signals as low as VCC - 5.5V to pass through without distortion. These analog switches have a low on-resistance and low supply current, and operate from a single +1.8V to +5.5V supply.
The MAX4744/MAX4744H have internal shunt resistors that automatically discharge the capacitance at the normally open (NO) and normally closed (NC) terminals when they are not connected. The MAX4746H features internal shunt resistors on NC_ terminals. This reduces click-and-pop sounds that occur when switching audio signals between precharged points. A break-before-make feature further reduces popping. The MAX4744/MAX4745 control the switches with two control bits CB1 and CB2. The MAX4744H/MAX4745H/MAX4746H have one control bit to switch both switches and an enable input active-low EN to put the switches in a high-impedance mode. The MAX4744H/MAX4745H/MAX4746H also have an internal protection network against voltages applied to COM_ when VCC = 0V.
These devices are available in a space-saving 10-pin µDFN (2mm x 2mm) package and operate over the -40°C to +85°C extended temperature range.
The MAX4744/MAX4744H have internal shunt resistors that automatically discharge the capacitance at the normally open (NO) and normally closed (NC) terminals when they are not connected. The MAX4746H features internal shunt resistors on NC_ terminals. This reduces click-and-pop sounds that occur when switching audio signals between precharged points. A break-before-make feature further reduces popping. The MAX4744/MAX4745 control the switches with two control bits CB1 and CB2. The MAX4744H/MAX4745H/MAX4746H have one control bit to switch both switches and an enable input active-low EN to put the switches in a high-impedance mode. The MAX4744H/MAX4745H/MAX4746H also have an internal protection network against voltages applied to COM_ when VCC = 0V.
These devices are available in a space-saving 10-pin µDFN (2mm x 2mm) package and operate over the -40°C to +85°C extended temperature range.
Key Features
- Distortion-Free Negative Signal Throughput Down to VCC - 5.5V
- Internal Shunt Resistor Reduces Click/Pop (MAX4744/MAX4744H)
- 0.6Ω (typ) Low On-Resistance
- 0.1Ω (max) Channel-to-Channel Matching
- 0.55Ω (max) On-Resistance Flatness
- +1.8V to +5.5V Single-Supply Voltage
- 0.01% (typ) Total Harmonic Distortion
- -75dB (typ) Crosstalk (100kHz)
- -68dB (typ) Off-Isolation (100kHz)
- Available in 10-Pin µDFN Package (2mm x 2mm)
Applications/Uses
- Cellular Phones
- MP3 Players
- Notebook Computers
- PDAs and Other Handheld Devices
- Power Routing
- Speaker Switching
Parametric specs for Switches and Multiplexers ≤ 5V
| Configuration | 2-to-1 SPDT |
| # Channels | 2 |
| VSUPPLY (Single) (V) (min) | 1.8 |
| VSUPPLY (Single) (V) (max) | 5.5 |
| VSIGNAL (V) (min) | -3.7 |
| VSIGNAL (V) (max) | 5.5 |
| Dynamic Range (max) (V) (max) | 5.5 |
| RON (Ω) (max) | 0.95 |
| RFLAT(ON) (Ω) (typ) | 0.55 |
| Package/Pins | UDFN/10 |
| Budgetary Price (See Notes) | $1.31 @1k |
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Technical Docs
| Data Sheet | Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability | Feb 13, 2007 |
Click any title below to view the detail page where available.
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Parameters
Parametric specs for Switches and Multiplexers ≤ 5V
| Configuration | 2-to-1 SPDT |
| # Channels | 2 |
| VSUPPLY (Single) (V) (min) | 1.8 |
| VSUPPLY (Single) (V) (max) | 5.5 |
| VSIGNAL (V) (min) | -3.7 |
| VSIGNAL (V) (max) | 5.5 |
| Dynamic Range (max) (V) (max) | 5.5 |
| RON (Ω) (max) | 0.95 |
| RFLAT(ON) (Ω) (typ) | 0.55 |
| Package/Pins | UDFN/10 |
| Budgetary Price (See Notes) | $1.31 @1k |
Key Features
- Distortion-Free Negative Signal Throughput Down to VCC - 5.5V
- Internal Shunt Resistor Reduces Click/Pop (MAX4744/MAX4744H)
- 0.6Ω (typ) Low On-Resistance
- 0.1Ω (max) Channel-to-Channel Matching
- 0.55Ω (max) On-Resistance Flatness
- +1.8V to +5.5V Single-Supply Voltage
- 0.01% (typ) Total Harmonic Distortion
- -75dB (typ) Crosstalk (100kHz)
- -68dB (typ) Off-Isolation (100kHz)
- Available in 10-Pin µDFN Package (2mm x 2mm)
Applications/Uses
- Cellular Phones
- MP3 Players
- Notebook Computers
- PDAs and Other Handheld Devices
- Power Routing
- Speaker Switching
Description
The MAX4744/MAX4744H/MAX4745/MAX4745H/MAX4746H dual SPDT (single-pole/double-throw) audio switches feature negative signal capability that allows signals as low as VCC - 5.5V to pass through without distortion. These analog switches have a low on-resistance and low supply current, and operate from a single +1.8V to +5.5V supply.
The MAX4744/MAX4744H have internal shunt resistors that automatically discharge the capacitance at the normally open (NO) and normally closed (NC) terminals when they are not connected. The MAX4746H features internal shunt resistors on NC_ terminals. This reduces click-and-pop sounds that occur when switching audio signals between precharged points. A break-before-make feature further reduces popping. The MAX4744/MAX4745 control the switches with two control bits CB1 and CB2. The MAX4744H/MAX4745H/MAX4746H have one control bit to switch both switches and an enable input active-low EN to put the switches in a high-impedance mode. The MAX4744H/MAX4745H/MAX4746H also have an internal protection network against voltages applied to COM_ when VCC = 0V.
These devices are available in a space-saving 10-pin µDFN (2mm x 2mm) package and operate over the -40°C to +85°C extended temperature range.
The MAX4744/MAX4744H have internal shunt resistors that automatically discharge the capacitance at the normally open (NO) and normally closed (NC) terminals when they are not connected. The MAX4746H features internal shunt resistors on NC_ terminals. This reduces click-and-pop sounds that occur when switching audio signals between precharged points. A break-before-make feature further reduces popping. The MAX4744/MAX4745 control the switches with two control bits CB1 and CB2. The MAX4744H/MAX4745H/MAX4746H have one control bit to switch both switches and an enable input active-low EN to put the switches in a high-impedance mode. The MAX4744H/MAX4745H/MAX4746H also have an internal protection network against voltages applied to COM_ when VCC = 0V.
These devices are available in a space-saving 10-pin µDFN (2mm x 2mm) package and operate over the -40°C to +85°C extended temperature range.
Technical Docs
| Data Sheet | Low-Voltage, Dual SPDT, Audio Clickless Switches with Negative Rail Capability | Feb 13, 2007 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal
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