Analog Devices Inc./Maxim Integrated MAX40027ATC/VY+T

Overview

MAX40027ATC/VY+T from Maxim Integrated is a dual, single-supply high-speed comparator with 280ps typical propagation delay, 25ps overdrive dispersion, LVDS differential outputs, and 1.5mV internal hysteresis-designed for precision time-of-flight distance measurement in automotive LiDAR receivers interfacing with transimpedance amplifiers like MAX40660.

For engineers reviewing the MAX40027ATC/VY+T datasheet, MAX40027ATC/VY+T pinout, MAX40027ATC/VY+T application, or MAX40027ATC/VY+T equivalent, key selection criteria include ultra-low timing dispersion under variable overdrive, AEC-Q100 qualification, -40°C to +125°C operation, and direct FPGA/CPU-compatible LVDS output drive without level-shifting.

Technical Context

The MAX40027ATC/VY+T implements two independent high-speed comparators with rail-to-rail input common-mode range (1.5V to V_DD + 0.1V), enabling direct interface with TIA outputs such as MAX40660's differential swing. Each channel features fixed 1.5mV hysteresis to suppress noise-induced chatter without external feedback.

Its LVDS output stage delivers ±350mV differential swing into 100Ω termination with 1.23V common-mode voltage, independent of supply, and supports up to 3Gbps toggle rate. Propagation delay skew between complementary outputs is limited to 10ps, ensuring precise differential timing integrity critical for ToF systems.

Key Specifications

Pinout & Package

MAX40027ATC/VY+T is housed in a 3mm × 2mm, 12-pin side-wettable TDFN package (package code TD1232MY+1) with exposed thermal pad (EP) requiring PCB ground connection. The compact footprint supports high-density placement in space-constrained LiDAR receiver modules.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed comparator applications.

Compared with TLV3501AIDBVR and ADCMP572BCPZ-R7, the MAX40027ATC/VY+T uniquely combines AEC-Q100 qualification, integrated hysteresis, LVDS outputs, and 280ps timing performance in a side-wettable package - making it the only drop-in solution for production automotive LiDAR front-ends requiring zero layout change and full temperature-range validation.

Availability

MAX40027ATC/VY+T is available at Aetrix Electronics and suitable for automotive ADAS subsystems, industrial time-of-flight sensors, and high-speed test instrumentation requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant traceability.

Supply support for MAX40027ATC/VY+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated, now part of Analog Devices, designs precision analog and mixed-signal ICs for automotive, industrial, and communications markets, with emphasis on high-performance timing, sensing, and power solutions.

The MAX40027 product line targets ultra-precise time-domain measurement systems, specifically engineered to meet the sub-nanosecond timing, low dispersion, and automotive reliability demands of next-generation LiDAR and RADAR receivers.

FAQ

What is the guaranteed propagation delay range for MAX40027ATC/VY+T across temperature and supply voltage?

The MAX40027ATC/VY+T has a typical propagation delay of 280ps at 100mV overdrive and 3.3V supply, with minimum/maximum values of 270ps/-ps specified over -40°C to +125°C and 2.7V–3.6V. While min/max limits are not production-tested across full conditions, design characterization guarantees operation within ±10% of typical under all rated conditions, validated by Maxim's AEC-Q100 stress testing.

Does MAX40027ATC/VY+T require external hysteresis components for stable operation in noisy environments?

No. The MAX40027ATC/VY+T integrates a fixed 1.5mV hysteresis internally, eliminating the need for external positive-feedback resistors. This simplifies PCB layout, avoids stability issues associated with external networks, and ensures consistent noise immunity across temperature and supply variations - a key advantage over comparators requiring external hysteresis configuration.

Can MAX40027ATC/VY+T interface directly with Xilinx or Intel FPGAs without level-shifting?

Yes. The MAX40027ATC/VY+T's LVDS outputs deliver 247–454mV differential swing with 1.23V common-mode voltage into 100Ω loads - fully compliant with ANSI TIA/EIA-644-A LVDS standards. This allows direct connection to FPGA LVDS input banks (e.g., Xilinx HP I/O, Intel 1.2V LVDS) without level shifters, provided proper 100Ω termination is implemented at the FPGA end.

What is the purpose of the side-wettable flanks on the MAX40027ATC/VY+T package?

The side-wettable flanks on the MAX40027ATC/VY+T's 12-pin TDFN package enable automated optical inspection (AOI) of solder joint quality during SMT assembly. This feature is mandated for automotive AEC-Q100-compliant manufacturing to ensure zero-defect interconnect reliability - especially critical in safety-critical LiDAR modules where solder voids could cause intermittent timing failures.

How does the input common-mode range of MAX40027ATC/VY+T support interfacing with MAX40660 transimpedance amplifiers?

The MAX40027ATC/VY+T supports an input common-mode range of 1.5V to V_DD + 0.1V, which aligns precisely with the MAX40660's differential output swing (typically centered near 1.2V with ±200mV offset). This overlap ensures the comparator inputs remain within specification even when the TIA output swings near the supply rail - enabling robust, rail-to-rail signal capture without clipping or saturation in ToF receiver chains.