Instruction Manual

PNI Sensor Corporation DOC# 1015175 r01
MicroMag User Manual – March 2010 Page 6 of 23
3 Specifications
3.1 Module Characteristics
Table 3-1: Absolute Maximum Ratings
Parameter
Symbol
Maximum
Units
DC Supply Voltage
V
DD
5.25
VDC
Input Pin Voltage
V
IN
V
DD
+ 0.3
VDC
Input Pin Current @ 25C
I
IN
10 mA
mA
Storage Temperature
T
STRG
+85
C
CAUTION:
Stresses beyond those listed in Table 3-1 may cause permanent damage to the
device. These are stress ratings only. Functional operation of the device at these or
any other conditions beyond those indicated in the operational sections of the
specifications is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability.
Table 3-2: Module Operating Characteristic
Parameter
Value
Units
Field Measurement Range
1
-1100 to +1100
T
Gain
2
31.24
counts/ T
Resolution
2
(1/Gain)
0.03
T
Linearity, ± 300 µT
0.6
%
DC Supply Voltage (V
DD
)
3.0 nominal
2.2 to 5.0 allowable
VDC
Idle Current
3
< 0.1
mA rms
Continuous Current
3
0.5
mA rms
Sensor Frequency
3,4
175
kHz
Operating Temperature
-20 to +70
C
Notes:
1) Field Measurement Range is defined as the monotonic region of the output characteristic curve.
2) Period select value of 2048. The Gain and Resolution can be increased by a factor of 2 by
setting the period select to 4095. However, the ASIC counter can overflow if the field is strong
enough to drive the count beyond a signed 16-bit signed integer. Period select set to 2048 is the
highest setting where it is impossible to overflow the counter. In practical magnetometer