MS1003
Hangzhou Ruimeng Technology Co.,Ltd VERSION
：
1.3 2022.02.21
http://www.relmon.com
PAGE 1
High-precision Time Measurement (TDC) Circuit for Laser Ranging
PRODUCT DESCRIPTION
MS1003 is a highprecision time measurement (TDC) circuit. Compared
with the MS1002, it has higher accuracy and smaller package, which is
suitable for highprecision small package applications.
MS1003 has dualchannel, multipulse sampling capability, highspeed SPI
communication, multiple measurement modes, and is suitable for radar and
laser ranging.
FEATURES
46ps in Dualchannel Singleprecision Mode
23ps in Singlechannel Double Precision Mode
Uncalibrated Singleprecision Measurement Range 14ns to 16μs
Uncalibrated Double Precision Measurement Range 16ns to 16μs
Calibration Single Precision Measurement Range 14ns to 4μs
Calibration Double precision Measurement Range 16ns to 2μs
10ns Minimum Pulse Interval, Dual channels can receive up to 20 pulses
4wire SPI Communication Interface
Operating Voltage 2.5V to 3.6V
Working Temperature 40°C to +100°C
QFN20 Package
APPLICATIONS
Radar
Laser Ranging
Pulse Measurement
PRODUCT SPECIFICATION
Part Number
Package
Marking
MS1003
QFN20
MS1003
QFN20
MS1003
Hangzhou Ruimeng Technology Co.,Ltd VERSION
：
1.3 2022.02.21
http://www.relmon.com
PAGE 2
PIN CONFIGURATION
PIN DESCRIPTION
Pin
Name
Type
Description
1
GND
Ground
2
VCC
I/O Power Supply
3
VDD
Core Power Supply
4
XIN
I
Highspeed Crystal Drive Input
5
XOUT
O
Highspeed Crystal Drive Output
6
SSN
I
SPI interface Slave Selection, Active Low
7
SCK
I
SPI Interface Clock Input
8
SI
I
SPI Interface Data Input
9
SO
O
SPI Interface Data Output; High impedance when SPI is idle
10
RSTN
I
System Reset Input, Active Low
11
GND
Ground
12
VDD
Core Power Supply
13
INTN
O
Interrupt Flag, Active Low
14
EN_STOP2
I
Stop Channel 2 Enable Port, Active High
15
EN_STOP1
I
Stop Channel 1 Enable Port, Active High
16
GND
Ground
17
STOP2
I
Stop Channel 2
18
STOP1
I
Stop Channel 1
19
START
I
Start Channel
20
EN_START
I/O
The default output port, output START pulse, it is recommended not to
directly connect to the power supply to avoid large current;
EN_START internal pullup Start enable, can be set to EN_START input by
setting register, high level is effective