With the rapid growth of lawn‑mowing robots and embodied intelligence, multi‑line LiDAR systems are demanding ever‑higher precision in time‑of‑flight measurement. Ruimeng Technology introduces the MS1007X series of high‑precision time‑to‑digital converters, comprising three variants: MS10072 (2‑channel), MS10074 (4‑channel), and MS10078 (8‑channel). In quad‑precision mode, the devices achieve a measurement accuracy of 10 ps over a range from 2.5 ns (0 ns) to 16 μs. They support both SPI and QSPI interfaces; in QSPI mode, the clock runs at up to 60 MHz with 4‑line parallel transmission, delivering an equivalent data rate of 240 Mbps – meeting the high throughput demands of high‑frequency LiDAR scanning.
Core Advantages
1. Flexible Multi‑Channel Configuration with Single/Dual‑Echo Support
Available in 2‑, 4‑, and 8‑channel options, the 8‑channel version is ideal for LiDAR and other applications that handle multiple echo signals. Both single‑echo and dual‑echo modes are supported; the dual‑echo mode can penetrate obstacles such as rain, fog, and foliage, enhancing detection capability in challenging environments.
2. Ultra‑High Precision and Wide Measurement Range
Three precision modes are offered: single‑precision (40 ps), double‑precision (20 ps), and quad‑precision (10 ps). In quad‑precision mode, the 10 ps accuracy corresponds to a distance resolution of approximately 1.5 mm. The measurement range spans from 2.5 ns (0 ns) to 16 μs, covering both short‑range high‑speed pulses and long‑range echo acquisition.
3. 5‑Level FIFO Buffer + High‑Speed QSPI Interface
An integrated 5‑level FIFO buffer stores multiple measurement results, reducing the interrupt load on the MCU. The SPI/QSPI interface supports clock speeds up to 60 MHz in QSPI mode; with 4‑line parallel operation, the effective data rate is 240 Mbps, ensuring sufficient bandwidth for high‑frequency LiDAR scanning.
4. Built‑in 1.8 V LDO Simplifies Power Supply Design
The on‑chip 1.8 V LDO can deliver up to 120 mA of drive current to external low‑power devices, simplifying power rail design and reducing overall BOM cost.
Key Parameters
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Supply voltage: 2.7 – 3.6 V
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Channels: 2 / 4 / 8
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Resolution: down to 10 ps (quad‑precision mode)
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Measurement range: 2.5 ns – 16 μs
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Echo modes: single‑echo and dual‑echo
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FIFO depth: 5 levels
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Interface: SPI / QSPI (up to 60 MHz, 240 Mbps equivalent)
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Built‑in LDO: 1.8 V / 120 mA output
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Operating temperature: –40 °C to +125 °C
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Packages: QFN28 (MS10072), QFN32 (MS10074/MS10078)
Application Scenarios
1. Multi‑Line LiDAR for Lawn‑Mowing Robots
In complex garden environments, intelligent mowers require stable mapping, precise obstacle avoidance, and adaptive localisation. The MS10078’s 8 channels simultaneously capture multiple echoes, while the 60 MHz QSPI interface meets the throughput needs of high‑speed scanning – delivering a complete TDC solution in a single chip.
2. Multi‑Line LiDAR for Embodied Intelligence / Humanoid Robots
Embodied intelligent robots need 360° perception and path planning. The MS10078 processes multiple echo signals concurrently, with low power consumption and a wide temperature range (–40 °C to +125 °C) suited for extended outdoor operation. The single/dual‑echo modes ensure stable ranging under varying lighting and occlusion conditions.
3. Laser Distance Measurement
In handheld 3D scanners and industrial surveying, precise measurement of the time interval between transmitted and received pulses is essential for building high‑accuracy 3D point clouds. The MS10072/MS10074, with 10 ps precision in quad‑precision mode (≈1.5 mm distance resolution), directly improve point‑cloud accuracy and modelling quality, meeting the millimetre‑level requirements of surveying‑grade equipment.
Summary
The MS1007X series combines 10 ps precision, 2/4/8‑channel flexibility, a 5‑level FIFO, and a high‑speed QSPI interface to deliver a versatile high‑precision measurement solution for LiDAR and laser ranging applications. The three models – MS10072, MS10074, and MS10078 – address a wide spectrum of needs, from handheld rangefinders to multi‑line LiDAR systems.
For detailed specifications, please refer to the official product datasheet.
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