Ultrapure Sinewave Oscillator
Posted: Sat Aug 20, 2011 6:15 pm
I just recevied the print edition of EDN and noticed the front cover article titled "Test 18-Bit ADCs with an Ultrapure Sine-wave Oscillator."
Somehow I knew it was written by the late Jim Williams. It was.
I can almost always recognize Jim's work by its title, the schematic art and the vintage oscillograms. Stephen Woodward's schematics stand out the same way.
They're getting a THD+N of around -105.
http://www.edn.com/design/test-and-meas ... 8-bit-ADCs
"Test 18-Bit ADCs with an Ultrapure Sine-wave Oscillator," Jim Williams, EDN, August 11, 2011.
LTC had another application note AN67 for an ultrapure oscillator using "super op amps." It begins on page 62.
https://www.analog.com/media/en/technic ... /an67f.pdf
Somehow I knew it was written by the late Jim Williams. It was.
I can almost always recognize Jim's work by its title, the schematic art and the vintage oscillograms. Stephen Woodward's schematics stand out the same way.
They're getting a THD+N of around -105.
http://www.edn.com/design/test-and-meas ... 8-bit-ADCs
"Test 18-Bit ADCs with an Ultrapure Sine-wave Oscillator," Jim Williams, EDN, August 11, 2011.
LTC had another application note AN67 for an ultrapure oscillator using "super op amps." It begins on page 62.
https://www.analog.com/media/en/technic ... /an67f.pdf