My latest project involves a PIC16C73A , which amongst other things,  drives
a serial 16bit DAC. This gives me a control voltage  programmable from 0  to
10V.
I also need to generate a sinewave of nominally 1KHz. The p-p amplitude
 must track the DAC voltage and be always 10 percent of its DC  voltage.
It has to be a reasonably clean and stable sinewave.
Input voltage range varies from   0.5 to  10V.
Sine wave output will vary 0 to 1V p-p for the above input range. Accuracy
better than 3%.
Sine wave Total Harmonic Distortion better than 5%
Sine wave frequency accuracy 1Khz +/- 100Hz
Output current 5mA max.
Power supply -  I have +15V, -15V and +5V available.

For example if I have a DC input of 3V the sinewave generator should output
300mV peak to peak at 1Khz.
this 300mV should be accurate to 309mV max or 291 mV minimum.

I am considering an MF10 switched capacitor filter with clock 128 times that
of the 1KHZ output but am looking for ideas

All ideas welcome. Must be reasonably low component count but parts cost is
not paramount for a change!

Regards,
Gerry Cox