ADIS16220/PCBZ Analog Devices Inc, ADIS16220/PCBZ Datasheet - Page 15

• Manufacturer Part Number: ADIS16220/PCBZ
• Description: Vibration Sensor Evaluation Board
• Manufacturer: Analog Devices Inc
• Series: iSensor™r

Specifications of ADIS16220/PCBZ

• Silicon Manufacturer: Analog Devices
• Application Sub Type: Vibration Sensor
• Kit Application Type: Sensing - Motion / Vibration / Shock
• Silicon Core Number: ADIS16220
• Kit Contents: Board
• Sensor Type: Vibration, Accelerometer
• Sensing Range: ±70g
• Interface: SPI Serial
• Sensitivity: 19.073mg/LSB
• Voltage - Supply: 3.15 V ~ 3.6 V
• Embedded: No
• Utilized Ic / Part: ADIS16220
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 29. DIAG_STAT Bit Descriptions
Bit
[15]
[14]
[13]
[12]
[11]
[10]
[9]
[8]
[7]
[6]
[5]
[4]
[3]
[2]
[1]
[0]
Self-Test
The internal MEMS sensing element has an electrostatic self-
test function that simulates the physical displacement associated
with an acceleration event. There are two options for using this
feature to verify the integrity of the accelerometer sensor and signal
chain. Set GLOB_CMD[2] = 1 to execute an automatic self-test
sequence, which exercises the sensing element, observes the
change in output, records it into ST_DELTA, compares it with pre-
set minimum/maximum values, and reports the pass/fail result in
DIAG_STAT[5].
Another option is to set MSC_CTRL[8] = 1 (see Table 30) to
manually activate the sensing element. Then execute a manual
capture, which reflects the response associated with the self-test
setting.
Table 30. MSC_CTRL Bit Descriptions
Bit
[15:9]
[8]
[7:2]
[1]
[0]
Description (Default = 0x0000)
Reserved
AIN2 sample > ALM_MAG2
AIN1 sample > ALM_MAG1
Acceleration sample > ALM_MAGA
Error condition programmed into ALM_MAGS[11:0] and
ALM_CTRL[5:4] is true
|Peak value in AIN2 data capture| > ALM_MAG2
|Peak value in AIN1 data capture| > ALM_MAG1
|Peak value in acceleration data capture| > ALM_MAGA
Data ready, capture complete
Flash test result, checksum flag
Self-test diagnostic error flag
Capture period violation/interruption
SPI communications failure
Flash update failure
Power supply above 3.625 V
Power supply below 3.15 V
Description (Default = 0x0003)
Reserved
Self-test enable, set to 1 to activate,
(returns to 0 when complete)
Reserved
Power supply compensation, AIN2
1 = enable, 0 = disable
Power supply compensation, AIN1
1 = enable, 0 = disable
Rev. 0 | Page 15 of 20
MSC_CTRL[1:0] provides an option for reducing the sensitivity
dependence on power supply for ratiometric sensors, such as
the ADXL001.
Table 31. ST_DELTA Bit Descriptions
Bit
[15:0]
SERIALIZATION
LOT_ID1 and LOT_ID2 combine to provide a unique lot code
that is 24 bits in length. SERIAL_NUM provides a unique serial
number for each device within a given lot.
Table 32. LOT_ID1 Bit Descriptions
Bit
[15:8]
[7:0]
Table 33. LOT_ID2 Bit Descriptions
Bit
[15:0]
Table 34. SERIAL_NUM Bit Descriptions
Bit
[15:0]
FLASH MEMORY MANAGEMENT
The FLASH_CNT register (see Table 35) provides a tool for
managing the flash memory’s endurance. The FLASH_CNT
register increments every time there is a write to the flash
memory. Figure 16 quantifies the relationship between data
retention and junction temperature.
Table 35. FLASH_CNT Bit Descriptions
Bit
[15:0]
600
450
300
150
0
Description
Description
Lot identification code, least significant byte
Reserved for internal use, do not use
Description
Description
Serial number, lot-specific
Description
Binary counter for writing to flash memory
30
Acceleration data, twos complement, 19.073 mg/LSB
Lot identification code, most significant bytes
Figure 16. Flash/EE Memory Data Retention
40
55
JUNCTION TEMPERATURE (°C)
70
85
100
125
ADIS16220
135
150