> The 5061 had an analog double integrator using a $100 op amp.
> Maybe Hugh Rice can speak about that. You have to have the 2nd
> integrator to prevent a ramping error term from turning into a
> frequency offset instead of getting integrated out.
I never studied the control loop design on the
Hi Rick,
On 2019-02-02 17:49, Richard (Rick) Karlquist wrote:
On 2/1/2019 3:22 PM, Magnus Danielson wrote:
The Gardner book is the one book I recommend. Few books has core
knowledge so well compressed. If one only gets one book, this would
be the one I would recommend.
Cheers,
Magnus
On 2/2/2019 3:06 PM, Magnus Danielson wrote:
We also used a double integrator
on the 5071A cesium standard, but cesium loops are NOT PLL's.
Indeed, double-integrator in FLL is a separate class of problems.
Didn't know it had double-integrator.
Cheers,
Magnus
The 5061 had an analog
On 2/1/2019 3:22 PM, Magnus Danielson wrote:
The Gardner book is the one book I recommend. Few books has core
knowledge so well compressed. If one only gets one book, this would be
the one I would recommend.
Cheers,
Magnus
I'm glad someone mentioned this classic. 45 years ago, this
was
I learned a useful rule of thumb design procedure for 2nd degree PLLs some
time ago
(I'll speak in the context of using an inverting op-amp in the loop
gain/filter stage):
Step 1: Short the capacitor in the opamp's FB loop, then set the resistor
so that
the PLL has the desired loop bandwidth.
