Maxim Intros MAX4238 and MAX4239 Op Amps
Maxim Integrated Products Inc. (Sunnyvale, CA) announced its new MAX4238 and MAX4239 operational amplifiers, which provide an offset voltage of 0.1µV and a drift of 10nV per degree C, making them suitable for use in applications such as thermocouples, strain gauges and portable medical instruments. The chips also offer a loop gain of 150dB, CMRR of 140dB and noise of 1µVpp (100Hz).
The MAX4238 and MAX4239 feature an input-bias current of 1pA, ground-sensing input and rail-to-rail outputs. The amplifiers operate from a single 2.7V to 5.5V supply, and consume only 600µA. An active-low shutdown mode decreases supply current to only 0.1µA. The MAX4238 is unity-gain stable with a gain-bandwidth product of 1MHz. The MAX4239 has a gain-bandwidth product of 6.5MHz.
Both amplifiers are specified for operation from -40 to +125 degrees C and are available in eight-pin narrow SOP or six-pin SOT23 packages.
Pricing starts at $0.85 for quantities of 2,500 and more.