MM5625-01NDB - 80Gbps Dual DP3T Loopback RF Switch | Menlo Micro

ATE Final Test Loopback for Application Processors

The MM5625-01NDB fits smartphone and mobile application-processor final test because its dual DP3T configuration and 80 Gbps capability cover the multi-lane PCIe Gen 5/6 and high-speed SerDes interfaces these chips expose. In a final-test loadboard, the AC-coupled loopback path routes each DUT transmit lane back to its paired receive lane, letting the tester validate both directions simultaneously and dramatically increasing parallelism. The 8.2 mm x 8.2 mm 226-LGA package keeps multiple switch instances within a dense probe socket area where electromechanical relays cannot fit or survive cycle counts. Seven control lines with enhanced RF performance allow per-site channel selection under tester control, and the internal charge pump removes the external bias rail that relay-driver designs require.

Probe Test for Graphics and AI Accelerators

Wafer-probe testing of GPUs and AI accelerators demands signal integrity at extreme data rates while hundreds of die are tested in parallel. The MM5625-01NDB's 20 GHz bandwidth and 80 Gbps rating preserve eye margins on PCIe Gen 5/6-class lanes at the probe interface, and Menlo Micro's Ideal Switch technology provides the low parasitic capacitance and repeatability that mechanical relays cannot achieve at probe-card scale. Because the loopback is AC-coupled, DC offsets from the DUT drivers are blocked while the differential AC signal is routed to the companion receiver, enabling true loopback at wafer level. The industrial-temperature rating and solid-state construction also tolerate the thermal cycling typical of wafer-sort environments.

Network Processor Chip Test

Network processors integrate many multi-gigabit SerDes lanes for Ethernet and interconnect fabrics, and their test requires dense, reliable loopback switching. The MM5625-01NDB addresses this with a dual DP3T topology that routes differential pairs under 7-CTRL logic, allowing the tester to reconfigure loopback paths per site without mechanical switching delays. Its Ideal Switch construction delivers consistent on-state characteristics across millions of actuations, critical for 24/7 production test floors. The 226-LGA footprint packs multiple loopback channels into the limited real estate of a final-test socket adapter, and the internal charge pump simplifies bias distribution across large multi-site boards, reducing loadboard layer count and cost per site.

Microprocessor and Server SoC Validation

Server-class microprocessors and SoCs use PCIe Gen 5/6 links for host and fabric connectivity, and silicon validation platforms need to exercise these lanes in loopback during characterization. The MM5625-01NDB provides the bandwidth headroom (20 GHz, 80 Gbps) required to capture marginal eye behavior at Gen 6 rates, while the AC-coupled architecture prevents common-mode voltage mismatches between DUT banks from corrupting measurements. Its solid-state Ideal Switch elements switch in microseconds, far faster than mechanical relays, enabling high-throughput test sequencing across thousands of validation runs. The industrial temperature range supports characterization across the full operating envelope of server silicon.

High-Speed Memory Product Test

The Menlo MM5625 datasheet explicitly lists high-speed memory products among its target applications. Modern memory test platforms drive and verify very fast differential clock and data interfaces, and the MM5625's 80 Gbps capability and low-parasitic Ideal Switch construction keep rise-time degradation within budget on these paths. In a memory final-test loadboard, the dual DP3T switch steers differential signal pairs into AC-coupled loopback so write and read paths can be verified in parallel, improving test-cell throughput. The 226-LGA, 8.2 mm x 8.2 mm package is compact enough for dense multi-socket memory test boards where relay-based approaches would exhaust board area and actuator lifetime.

Space-Constrained Probe Card Relay Replacement

Wherever legacy probe-card and loadboard designs used electromechanical relays for loopback routing, the MM5625-01NDB offers a solid-state replacement with superior cycle life and bandwidth. Mechanical relays exhibit contact wear, bouncing and rising on-resistance over millions of actuations, which degrades both measurement repeatability and throughput; Menlo Micro's Ideal Switch technology eliminates these failure modes while fitting in a compact 226-LGA footprint. The internal charge pump also removes the external negative-bias supplies that relay drivers need, simplifying power-tree design on retrofit boards. The 7-CTRL interface maps cleanly onto existing tester control logic, easing migration from relay-based loopback architectures.