SCA610-E23H1A-1

SCA610-E23H1A
Murata Electronics Oy 1/11
www.muratamems.fi Doc.nr. 82 1525 00 Rev.A
Datasheet
SCA610-E23H1A SINGLE AXIS ACCELEROMETER WITH ANALOG
INTERFACE
The SCA610 accelerometer consists of a silicon bulk micro machined sensing element chip and a signal
conditioning ASIC. The chips are mounted on a pre-molded package and wire bonded to appropriate contacts.
The sensing element and ASIC are protected with silicone gel and lid. The sensor has 8 SMD legs (Gull-wing
type).
Features
Single +5 V supply
Current consumption 2.5 mA typical
Ratiometric output in relation to supply
voltage (Vdd = 4.75 V...5.25 V)
Enhanced failure detection features
o Digitally activated, true self-test by
proof mass deflection using
electrostatic force
o Memory parity check during power
up, and self-test cycle.
o Built in connection failure detection
Digitally activated, true self-test by proof
mass deflection using electrostatic force
Wide load drive capability (max. 20 nF)
True DC response
Qualified according to AEC-Q100 standard
Applications
SCA610 product family is targeted to automotive
applications with high stability and reliability
requirements. Typical applications include:
Electronic Stability Control (ESC)
Engine Vibration Measurement
Roll Over
Suspension
Inclination
Figure 1. Functional block diagram.
ASIC
EEPROM for calibration
constants (32 bit, parity check
)
Measuremen
t
circuitry
Gain &
filtering
4 programming lines
for factory use only
GND
V
out
Sensing
element
Digital sel
f
test input
5V supply
SCA610-E23H1A
Murata Electronics Oy 2/12
www.muratamems.fi Doc. nr. 82 1525 00 Rev.A
Table of Contents
SCA610-E23H1A single axis accelerometer with analog interface .................................... 1
FEATURES .................................................................................................................................... 1
APPLICATIONS .............................................................................................................................. 1
TABLE OF CONTENTS .................................................................................................................... 2
1. Electrical Specifications ............................................................................................ 3
1.1.ABSOLUTE MAXIMUM RATINGS ............................................................................................ 3
1.2.PERFORMANCE CHARACTERISTICS ..................................................................................... 3
1.3.OFFSET AND SENSITIVITY CALIBRATION ................................................................................ 4
1.4.ERROR CALCULATIONS ....................................................................................................... 4
1.5.SUPPLY VOLTAGE ............................................................................................................... 5
1.6.ELECTRICAL CONNECTION .................................................................................................. 6
2. Functional description ............................................................................................... 7
2.1.MEASURING DIRECTIONS .................................................................................................... 7
2.2.VOLTAGE TO ACCELERATION CONVERSION .......................................................................... 7
2.3.RATIOMETRIC OUTPUT ....................................................................................................... 7
2.4.SELFTEST AND FAILURE DETECTION MODES ......................................................................... 7
3. Mechanical Specification .......................................................................................... 9
3.1.DIMENSIONS ...................................................................................................................... 9
4. Application information ............................................................................................ 10
4.1.RECOMMENDED PCB LAY-OUT ......................................................................................... 10
4.2.REFLOW SOLDERING ........................................................................................................ 11
SCA610-E23H1A
Murata Electronics Oy 3/12
www.muratamems.fi Doc. nr. 82 1525 00 Rev.A
1. Electrical Specifications
1.1. Absolute Maximum Ratings
Parameter Value Units
Acceleration (powered or non-powered) 20 000
(1
g
Supply voltage 0.3 to +7.0 V
Voltage at input / output pins 0.3 to V
DD
+ 0.3 V
ESD HBM (Human Body Model)
2
kV
ESD CDM (Charged Device Model)
500 middle pins
750 corner pins
V
Temperature range (storage) 50 to +125 °C
Temperature range (operating) 40 to +125 °C
1
Equals to drop from 1 meter on a concrete surface.
1.2. Performance Characteristics
V
DD
= 5.00 V and ambient temperature unless otherwise specified.
KPC
A)
Parameter Condition Min. Typ Max. Units
Measuring range Nominal 1.5 +1.5 g
Supply voltage Vdd 4.75 5.0 5.25 V
<CC> Current consumption Vdd = 5 V; No load 2.5 4.0 mA
Operating temperature 40 +125 °C
Resistive output load Vout to Vdd or Vss 20 k
Capacitive load Vout to Vdd or Vss 20 nF
Min. output voltage; Vdd = 5 V 20k from Vout to Vdd 0 0.25 V
Max. output voltage; Vdd = 5 V 20k from Vout to Vss 4.75 5.00 V
<CC> Offset (Output at 0 g) @ room temperature Vdd/2 V
<CC> Sensitivity @ room temperature 1.333
(0.267*Vdd)
V/g
<SC> Offset Error (Output at 0 g) 40 °C...125 °C 125 0 +125 mg
Sensitivity error 25 °C...85 °C 3 0 +3 %
<SC> 40 °C...125 °C 5 0 +5 %
Typical non-linearity Within the measuring
range
20 +20 mg
Amplitude response 3 dB
B)
20 50 80 Hz
Ratiometric error Vdd = 4.75 V...5.25 V 2 +2 %
<SC> Cross-axis sensitivity @ room temperature 3.9 %
Output noise From DC...4 kHz 5 mV
rms
Start-up delay Reset and parity check 10 ms
Self test pull down resistor
(Internal)
44 62 80 k
A. CC= Critical Characteristics. Must be 100% monitored during production
SC= Significant Characteristic. The process capability (Cpk) must be better than 1.33, which allows sample based
testing. If process is not capable the part will be 100% tested
B. Output has true DC response

SCA610-E23H1A-1

Mfr. #:
Manufacturer:
Description:
Motion & Position Sensors Accelerometers 1-Axis Accelerometer Analog
Lifecycle:
New from this manufacturer.
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