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SDI 1410 DIGITAL PULSE DENSITY SURFACE  MOUNT ACCELEROMETERS

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SDI Models 1410L and 1410J Digital Pulse Density Accelerometers
Download the SDI 521 Datasheet

The SDI Model 1410 Specialty Digital Pulse Density Accelerometer is a unique accelerometer designed for use in DC to medium frequency instrumentation applications measuring acceleration exclusively. The Model 1410 produces a digital pulse train in which the density of pulses (number of pulses per second) is proportional to applied acceleration.  It requires a single +5 volt power supply and a TTL/CMOS level clock of 100kHz-1MHz. 

 

The output is ratiometric to the clock frequency and independent of the power supply voltage.  Two forms of digital signals are provided for direct interfacing to a microprocessor or counter.  The sensitive axis is perpendicular to the bottom of the package, with positive acceleration defined as a force pushing on the bottom of the package.  External digital line drivers can be used to drive long cables or when used in an electrically noisy environment.

AVAILABLE

G-RANGES

± 2 g

± 5 g

± 10 g

± 25 g

± 50 g

± 100 g

± 200 g

  • Integrated Sensor & Amplifier

  • -55 to +125 °C Operation

  • +5 VDC, 2 mA Power (typical)

  • LCC or J-Lead Surface Mount Package

  • Responds to DC & AC Acceleration

  • No External Reference Voltage

  • Easy Interface to Microprocessors, TTL/CMOS Compatible

  • Nitrogen Damped & Hermetically Sealed

  • Capacitive Micromachined & Serialized for Traceability

  • Good EMI Resistance

  • RoHS Compliant

Each miniature, hermetically sealed package combines a micro-machined capacitive sense element and a custom integrated circuit that includes a sense amplifier and sigma-delta A/D converter.  

 

Every Model 1410 accelerometer undergoes individual testing, programming, and calibration by SDI, and is marked with a serial number on its top and bottom surfaces for easy traceability.

ZERO TO MEDIUM FREQUENCY APPLICATIONS

SDI Model 1410 accelerometer applications
Input Range
Model Suffix (e.g. 1410L-010)
Frequency Response (Minimum, clock@ 250kHz)
Sensitivity, Differential
Max. Mechanical Shock (0.1 ms)
g
#
Hz
kHz/g
g (peak)
±2
-2
0 - 400
62.5
2000
±5
-5
0 - 500
25
2000
±10
-10
0 - 700
12.5
5000
±25
-25
0 - 1000
5
5000
±50
-50
0 - 1300
2.5
5000
±100
-100
0 - 1600
1.25
5000
±200
-200
0 - 1900
0.625
5000
SDI Model 1410 Output signal

PERFORMANCE - ALL VERSIONS

All Models: Unless otherwise specified  VDD=VR=5.0 VDC, FCLK=250 kHz, TC=25°C

PARAMETER
MIN
TYP
MAX
UNITS
Cross Axis Sensitivity
2
3
± %
Bias Calibration Error
0.2
0.5
± % of FCLK (span)
Bias Temperature Shift (TC= -55 to +125°C)
-200
0
200
(PPM of FCLK)/°C
Scale Factor Calibration Error *
0.75
2
± %
Scale Factor Temperature Shift (TC= -55 to +125°C)
0
200
PPM/°C
Non-Linearity (-90 to +90% of Full Scale) *
0.5
1
± % of span
Long Term Bias Stability
1000
2000
± PPM of span
In Run Bias Stability
18
30
± PPM of span
Long Term Scale Factor Stability
500
1000
± PPM
Turn-On Transient (in less than 0.5ms)
38
± PPM of span
Operating Voltage (VDD vs. GND)
4.5
5
5.5
Volts
Operating Current (IDD + IVR)*
2
3
mA
Clock Input Voltage Range (with respect to GND)
-0.5
VDD+0.5
Volts
Mass ‘L’ Package (add 0.06 grams for ‘J’ package)
0.62
Grams
Cross Axis Sensitivity
2
3
± %
Bias Calibration Error ¹
0.2
0.5
± % of FCLK (span)
Bias Temperature Shift (TC= -55 to +125°C) ¹
-200
0
200
(PPM of FCLK)/°C
Scale Factor Calibration Error 1,2
0.75
2
± %
Scale Factor Temperature Shift (TC= -55 to +125°C) ¹
0
200
PPM/°C
Non-Linearity (-90 to +90% of Full Scale) 1,2
0.5
1
± % of span
Long Term Bias Stability
1000
2000
± PPM of span
In Run Bias Stability
18
30
± PPM of span
Long Term Scale Factor Stability
500
1000
± PPM
Turn-On Transient (in less than 0.5ms)
38
± PPM of span
Operating Voltage (VDD vs. GND)
4.5
5
5.5
Volts
Operating Current (IDD + IVR)1
2
3
mA
Clock Input Voltage Range (with respect to GND)
-0.5
VDD+0.5
Volts
Mass ‘L’ Package (add 0.06 grams for ‘J’ package)
0.62
Grams
Note 1: Tighter tolerances may be available on special order.
Note 2: 100g and greater versions are tested and specified from -65 to +65g

*  100g and greater versions are tested and specified from -65 to +65g

PACKAGE DIMENSIONS

L Package drawing
J Package drawing

Please see the data sheet for sensor location and other additional details. 

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Download the SDI 1521 datasheet
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