MAXIM MAX4735 Low-Voltage Quad-SPDT Analog Switch Datasheet
Summary
The MAX4735 is a highly reliable, low-voltage Quad-SPDT Analog Switch designed for efficient audio signal routing in portable electronics. Operating from 1.6V to 3.6V, it offers minimal signal distortion and excellent on-resistance matching crucial for quality audio reproduction in applications like MP3 players and mobile phones. This detailed manual covers comprehensive electrical characteristics, including low leakage current and full system specifications across various package options (TQFN/TSSOP). It is essential for designers building complex speaker systems, digital cameras, and PDAs requiring ultra-stable signal multiplexing capabilities.
Page 1 Text Content
19-3581; Rev 0; 1/05
Low-Voltage, 0.31Ω, Quad-SPDT Analog Switch
General Description Features
The MAX4735 quad-SPDT switch routes audio signals Low 0.31Ω RON
NO NC
in portable applications. Each channel has a 0.31Ω typ-
0.06Ω On-Resistance Flatness
ical on-resistance, allowing the MAX4735 to drive 8Ω GN IN loudspeakers with less than 0.02% distortion.
IN Excellent 0.015Ω On-Resistance Matching
The MAX4735 is configured as a quad-SPDT switch with
NO NC Low 0.02% THD into 8Ω
two common control inputs. Each digital input controls
two pairs of SPDT switches. The switches are fully bidi- Low 0.015% THD into 32Ω
rectional, allowing both multiplexing and demultiplexing
Audio Signal Routing
operation. Break-before-make operation is guaranteed.
Space-Saving, 3mm x 3mm TQFN Package
The device operates from a +1.6V to +3.6V supply and over the extended -40°C to +85°C temperature range. It 1.8V Logic Compatible is offered in both 16-pin 3mm x 3mm TQFN and TSSOP packages.
Applications Ordering Information
Cell Phones
PART PIN-PACKAGE PKG CODE
Digital Still Cameras MARK PDAs and Palmtop Devices MAX4735ETE 16 TQFN ACT T1633-4
MP3 Players MAX4735EUE 16 TSSOP U16-2 Note: All products specified across the -40°C to +85°C tem- perature range.
Pin Configurations Typical Application Circuit
TOP VIEW
RING TONE/
MAX4735
MELODY IC
COM1 COM4
INTERNAL 8Ω
NO1 NO4
SPEAKER
AUDIO
NC2 MAX4735 NC3
CODEC
COM2 COM3
EXTERNAL 8Ω OR 32Ω SPEAKER
SYSTEM TQFN CONTROLLER
VCC 1.6V TO 3.6V
NOTE: EXPOSED PADDLE CONNECTED TO GND. Pin Configurations continued at end of data sheet.
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Page Summary Contents For MAXIM MAX4735 Low-Voltage Quad-SPDT Analog Switch Datasheet
Manual Details
| Brand | QUAD |
|---|---|
| Pages | 13 |
| File Size | 279.75 KB |
| Published | June 04, 2026 |
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Frequently Asked Questions
What is the device's effective operational voltage range?
The MAX4735 operates from a +1.6V to +3.6V supply range.
What unique audio switching functions does this chipset offer?
It acts as a quad-SPDT switch optimized for bidirectional audio signal routing, enabling multiplexing and demultiplexing.
What are the key current limitations when operating the switches?
The continuous current limit (NO_, NC_, or COM_) is ±300mA at 70°C, with a peak rating of up to ±400mA.