Segment Information - Revenue by Product Line (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 30, 2022	Jan. 31, 2021	Jan. 26, 2020
Revenue from External Customer [Line Items]
Net sales	$ 740,858	$ 595,117	$ 547,512
Signal Integrity [Member]
Revenue from External Customer [Line Items]
Net sales	291,114	255,640	222,846
Protection
Revenue from External Customer [Line Items]
Net sales	203,570	161,943	157,212
Wireless and Sensing [Member]
Revenue from External Customer [Line Items]
Net sales	$ 246,174	$ 177,534	$ 167,454
Net sales revenue | Customer Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk, percentage	100.00%	100.00%	100.00%
Net sales revenue | Signal Integrity [Member] | Customer Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk, percentage	40.00%	43.00%	40.00%
Net sales revenue | Protection | Customer Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk, percentage	27.00%	27.00%	29.00%
Net sales revenue | Wireless and Sensing [Member] | Customer Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk, percentage	33.00%	30.00%	31.00%