ADIS16251ACCZ Analog Devices Inc, ADIS16251ACCZ Datasheet - Page 18

• Manufacturer Part Number: ADIS16251ACCZ
• Description: IC,Acceleration Detector,LGA,20PIN,PLASTIC
• Manufacturer: Analog Devices Inc
• Series: iSensor™r

Specifications of ADIS16251ACCZ

• Range °/s: ±20°/s, ±40°/s, ±80°/s
• Sensitivity: ±0.2%
• Typical Bandwidth: 49Hz
• Voltage - Supply: 4.75 V ~ 5.25 V
• Current - Supply: 18mA
• Output Type: SPI
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-LGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: ADIS16251/PCBZ - BOARD EVALUATION FOR ADIS16251
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q3234523

ADIS16251
Table 28. STATUS Bit Descriptions
Bit
15:10
9
8
7:6
5
4
3
2
1
0
Flash Memory Endurance
The ENDURANCE register maintains a running count of writes
to the flash memory. It provides up to 32,768 counts. Note that
if this count is exceeded, the register wraps around, and goes
back to zero, before beginning to increment again.
Table 29. ENDURANCE Register Definition
Address
0x01, 0x00
Alarms
The ADIS16251 provides two independent alarm options for
event detection. Event detections occur when output register
data meets the configured conditions. Configuration options are:
•
•
•
•
•
The ALM_MAG1 register and the ALM_MAG2 register both
establish the threshold level for detecting events. They take on
the format of the source data and provide a bit for establishing
the greater than/less than comparison direction. When making
dynamic comparisons, the ALM_SMPL1 register and the
ALM_SMPL2 register establish the number of averages taken for
the source data as a reference for comparison. In this configuration,
All output data registers are available for monitoring as the
source data.
The source data can be filtered or unfiltered.
Comparisons can be static or dynamic (rate of change).
The threshold levels and times are configurable.
Comparison can be greater than or less than.
Description
Not used
Alarm 2 status
Alarm 1 status
Not used
Self-test diagnostic error flag
Angular rate over range
SPI communications failure
Control register update failed
Power supply above 5.25 V
Power supply below 4.75 V
1 = active
0 = inactive
1 = active
0 = inactive
1 = error condition
0 = normal operation
1 = error condition
0 = normal operation
1 = error condition
0 = normal operation
1 = error condition
0 = normal operation
1 = above 5.25 V
0 = below 5.25 V (normal)
1 = below 4.75 V
0 = above 4.75 V (normal)
Default
N/A
Format
Binary
Access
Read-only
Rev. A | Page 18 of 18
each subsequent source data sample is subtracted from the
previous one, establishing an instantaneous delta. The rate of
change calculation is
where:
N
y(n) is the sampled output data.
M
ALM_MAG2.
Y
> or < is determined by the MSB in ALM_MAG1/ALM_MAG2.
The ALM_CTRL register controls the source data selection, static/
dynamic selection, filtering selection, and digital I/O usage for the
alarms.
Table 30. ALM_MAG1 Register Definition
Address
0x21, 0x20
Table 31. ALM_MAG1 Bit Descriptions
Bit
15
14
13:0
Table 32. ALM_SMPL1 Register Definition
Address
0x25, 0x24
Table 33. ALM_SMPL1 Bit Descriptions
Bit
15:8
7:0
Table 34. ALM_MAG2 Register Definition
Address
0x23, 0x22
Table 35. ALM_MAG2 Bit Descriptions
Bit
15
14
13:0
C
DS
C
is the factor to be compared with M
is the magnitude for comparison in ALM_MAG1/
is the number of samples in ALM_SMPL1/ALM_SMPL2.
Y
Rate
C
Description
Comparison polarity
Not used
Data bits: format matches source data format
=
1 = greater than
0 = less than
of
Description
Comparison polarity: 1 = greater than, 0 = less than
Not used
Data bits: format matches source data format
Description
Not used
Data bits
N
1
DS
change
N
n
∑
Default
0x0000
Default
0x0000
Default
0x0000
DS
=
1
y
(
alarm
n
+
) 1
−
⇒
y
is
(
n
Y
)
C
Format
N/A
Format
Binary
Format
N/A
>
or
C
<
.
M
C
?
Access
R/W
Access
R/W
Access
R/W