Other Parts Discussed in Thread: OPA1611, OPA1612, OPA1678
Hi Folks,
Our customer is in the process of designing a product that, among other things needs to drive 20Vpp into a 600 Ohm load, at around 1-3KHz.
We'd like some advice for component selection.
They have a 12-15V supply rail, so the best candidate so far for the job appears to be a pair of venerable LM386 audio amps in bridge configuration.
It appears that TI has the LM386 on offer, although the 18V variant (-4) only appears to be available in a PDIP8 package, which is too large for the design. They require SOIC8 or smaller.
They cannot afford to use a 12V variant, as our power rail is insufficiently regulated to guarantee the required voltage range (11.5-12V). 11.5-15 is acceptable, 11.5V-18V would be great.
Can you please recommend something else that would fit the bill, a different audio amp or op-amp, maybe in a dual package, capable of driving 100mW at say 10V?
The ideal component here would be a dual 18V rail-to-rail amplifier with a quiescent current of under 2mA and 10mA drive current.
Thanks.
