The MAX4735 low-voltage, 0.31-ohm, quad-SPDT analog switch routes audio signals in portable applications. Each channel has a 0.31-ohm typical on-resistance, allowing the MAX4735 to drive 8-ohm loudspeakers with less than 0.02% distortion. The MAX4735 is configured as a quad-SPDT switch with two common control inputs. Each digital input controls two pairs of SPDT switches. The switches are fully bidirectional, allowing both multiplexing and demultiplexing operation. Break-before-make operation is guaranteed. The device operates from a +1.6V to +3.6V supply and over the extended -40°C to +85°C temperature range. It is offered in both 16-pin 3mm x 3mm TQFN and TSSOP packages.
The MAX4735 is a quad‑SPDT analog switch designed for portable audio applications. Each channel has a typical on‑resistance of 0.31 Ω, allowing it to drive 8 Ω speakers with less than 0.02 % THD. The device operates from a single +1.6 V to +3.6 V supply and is rated for an extended temperature range of –40 °C to +85 °C. It is offered in 16‑pin TQFN and TSSOP packages.
Key specifications include a continuous current rating of 300 mA per channel, peak current of 400 mA (50 % duty), turn‑on time of 200 ns, break‑before‑make time of 2 ns, and on‑resistance flatness of 0.06 Ω. The datasheet provides detailed pin configurations, electrical characteristics, dynamic performance graphs, and package drawings.
| Supply Voltage Range | 1.6 V to 3.6 V |
|---|---|
| Typical On‑Resistance | 0.31 Ω |
| Continuous Current (per channel) | 300 mA |
| Operating Temperature Range | –40 °C to +85 °C |
| Package Types | 16‑pin TQFN and 16‑pin TSSOP |
The typical on‑resistance is 0.31 Ω per channel.
It operates from a single +1.6 V to +3.6 V supply.
The device is available in 16‑pin TQFN and 16‑pin TSSOP packages.
It is rated for –40 °C to +85 °C.