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Analog Devices MAX9703ETJ+T — Analog & Data Acquisition

MAX9703ETJ+T Class D Audio Amp, 18W Mono, 32-TQFN

MPNMAX9703ETJ+T
End of Life

Maxim Integrated MAX9703ETJ+T, Class D mono audio amplifier, 18W x 1 @ 16Ohm, 10V ~ 25V supply, -40°C ~ 85°C, 32-TQFN (5x5) exposed pad, Surface Mount.

$3.99Ref. price · indicative, final on quote
Packaging32-WFQFN Exposed Pad
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX9703ETJ+T specifications
ParameterValue
TypeClass D
Output type1-Channel (Mono)
MountingSurface Mount
Voltage10V ~ 25V
Max output power x channels @ load18W x 1 @ 16Ohm
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
FeaturesDepop, Differential Inputs, Mute, Short-Circuit and Thermal Protection, Shutdown
Case32-WFQFN Exposed Pad

Product details

Class D mono amplifier — 18 W into 16 Ω, industrial rated

The Maxim Integrated MAX9703ETJ+T is a Class D mono audio amplifier delivering 18 W continuous into a 16 Ω load from a single supply rail spanning 10 V to 25 V. The Class D switching topology keeps quiescent losses low, so the 32-TQFN (5x5) package with exposed pad handles the thermal load without forced air in most installations. On-chip short-circuit and thermal protection, plus a mute function and shutdown input, give the system designer a clean supervisory interface. The differential inputs reject ground noise picked up over long signal runs — useful in automotive infotainment or distributed audio where the amplifier sits remote from the source.

Marked as Active by the manufacturer and ROHS3 compliant.

Frequently asked questions

Does MAX9703ETJ+T require external heat sinking?

The exposed pad on the 32-TQFN package must be soldered to a PCB copper plane for heat dissipation. In a typical 18 W into 16 Ω application with adequate copper area, no separate bolt-on heatsink is needed. The thermal protection circuit will shut down the amplifier if the die temperature exceeds the safe limit.

What is the output power and load rating?

The MAX9703ETJ+T delivers 18 W continuous into a 16 Ω load from a 10 V to 25 V supply. It is a single-channel (mono) Class D amplifier.