公开(公告)号：US20210310996A1

公开(公告)日：2021-10-07

申请号：US17350552

申请日：2021-06-17

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Prashuk JAIN ,  Ravikumar PATTIPAKA ,  Vajeed Nimran PARAMBIL ABDUL RAHEEM ,  Sandeep Kesrimal OSWAL

IPC: G01N29/24 ,  G01S7/52 ,  G06F7/58 ,  G01S7/491 ,  G01N29/36

Abstract: A delay line control circuit includes a pseudo-random number generator and a random phase generator circuit coupled to the pseudo-random number generator. The pseudo-random number generator is configured to produce a predetermined sequence of pseudo-random values. The random phase generator circuit is configured to randomize an access sequence for capacitors of a delay line. The random phase generator circuit includes a sequence register, an adder, and gating circuitry. The sequence register is configured to a store a value identifying one of the capacitors to be accessed. The adder is coupled to the sequence register, and is configured to increment the value stored in sequence register. The gating circuitry is coupled to the pseudo-random number generator and the adder. The gating circuitry is configured to pass one of the pseudo-random values to the adder for addition to the value stored in the sequence register.