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Segment Information (Tables)
 12 Months Ended
Jan. 28, 2024
Segment Reporting [Abstract]  
Net sales by segment
Net sales and gross profit by reportable segment were as follows:
Fiscal Year Ended
(in thousands)January 28, 2024January 29, 2023January 30, 2022
Net sales:
Signal Integrity$177,033 20 %$298,290 39 %$286,259 39 %
Analog Mixed Signal and Wireless260,264 30 %443,239 59 %454,599 61 %
IoT Systems334,904 39 %9,811 1 %— — %
IoT Connected Services96,557 11 %5,193 1 %— — %
Total net sales$868,758 100 %$756,533 100 %$740,858 100 %
Gross profit:
Signal Integrity$101,245 $208,510 $195,984 
Analog Mixed Signal and Wireless146,598 274,515 274,215 
IoT Systems134,277 3,245 — 
IoT Connected Services47,228 2,489 — 
Unallocated costs, including share-based compensation, amortization of acquired technology
and acquired technology impairments		(133,098)(10,201)(9,060)
Total gross profit$296,250 $478,558 $461,139 
Net sales by geographic region
Net sales activity by geographic region was as follows:
 Fiscal Year Ended
(in thousands, except percentages)January 28, 2024January 29, 2023January 30, 2022
Asia-Pacific$505,603 58 %$543,795 72 %$583,852 79 %
North America237,132 27 %109,444 14 %90,796 12 %
Europe126,023 15 %103,294 14 %66,210 9 %
Total net sales$868,758 100 %$756,533 100 %$740,858 100 %
Sales activity to countries representing greater than 10% of total sales The table below summarizes sales activity to geographies that represented greater than 10% of total sales for at least one of the periods presented:
 Fiscal Year Ended
(percentage of total net sales)January 28, 2024January 29, 2023January 30, 2022
China (including Hong Kong)32 %53 %60 %
United States24 %13 %10 %
Total net sales56 %66 %70 %
Significant Customers
The following significant customers accounted for at least 10% of the Company's net sales in one or more of the periods indicated:
Fiscal Year Ended
(percentage of net sales) (1)
January 28, 2024January 29, 2023January 30, 2022
Trend-tek Technology Ltd. (and affiliates)*16 %17 %
Frontek Technology Corporation (and affiliates)10 %13 %18 %
CEAC International Ltd. (and affiliates)*11 %11 %
Arrow Electronics (and affiliates)**10 %
(1) In each period with an asterisk, the customer represented less than 10% of the Company's net sales.
The following table shows the customers that have an outstanding receivable balance that represents at least 10% of the Company's total net receivables as of one or more of the dates indicated:
(percentage of net receivables) (1)
January 28, 2024January 29, 2023
Frontek Technology Corporation (and affiliates)15%*
(1) In each period with an asterisk, the customer represented less than 10% of the Company's net receivables.
Long-lived assets by location
The following table summarizes the Company's long-lived assets, which consist of property, plant and equipment, net of accumulated depreciation, classified by location:
Balance as of
(in thousands)January 28, 2024January 29, 2023
United States$67,773 $73,695 
Rest of North America52,284 58,307 
Asia and all others14,678 18,359 
Europe18,883 18,932 
Total$153,618 $169,293