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DRV8601: Analog vs PWM input?

Part Number: DRV8601
Other Parts Discussed in Thread: DRV2624

I'm using an LRA, but it is one that is fairly broad-band instead of having a sharp resonance (Jinlong LV101040A, data here: https://www.vibration-motor.com/linear-resonant-actuator-lra-vibration-motors/lv101040a).  The supplier says that auto-resonance detection is not desired in the driver circuit because it is a broad-band device.

We are planning to store a waveform in memory and output it through a DAC, very similar to the method that would be used to output audio.  The waveforms will be varied to produce multiple haptic effects as requested by our human factors folks.  The power supply is 3.3V, and the DAC signal will swing from 0 to 3.3V, with the idle value at mid-range.  The LRA winding resistance is between 6 and 10 ohms.

The DRV8601 datasheet mostly refers to a PWM input, but it does say that a DC input voltage works.  I'm a little unclear as to whether the DRV8601 is essentially a linear part (a bridged op-amp), or more of a digital part (a class-D power stage).  The reference to DC input voltage implies that it is a linear part, as do the transfer functions in figures 3 and 4.  (The transfer functions show quite low gain - I'm guessing they are closed loop with specific input and feedback components, but the datasheet is unclear on this.)  The recommended circuits, with input and feedback resistors, also make it seem like an analog circuit.  However, many of the traditional linear specs like open loop gain, gain-bandwidth, etc., are missing.

Meanwhile, the repeated mention of PWM input and the transition time plots (figures 9 and 10) imply that this is more of a class D device, where the output stages are intended to run saturated and the voice coil inductance filters out the PWM frequency.  If that is the case, feeding it a DC or low-frequency analog signal would cause it to run in the un-saturated mode and dissipate a lot of power.

So which is it, linear or class D?  Can I treat it like a bridged high-power op-amp?

Second related question:  if this is indeed a purely analog part, what is its bandwidth?  I have a second DAC that is intended to drive a small 8-ohm speaker.  Can I use a second DRV8601 as a speaker driver?  Same basic design - waveform in memory, sent out through a DAC.  I would need a bandwidth from about 100Hz to 5KHz.  (I'm sure there are plenty of speaker amps out there, but using two pieces of the same part is better than having two different parts.)