ADXL180WCPZ-RL Analog Devices Inc, ADXL180WCPZ-RL Datasheet - Page 16

• Manufacturer Part Number: ADXL180WCPZ-RL
• Description: IC ACCELEROMETER CONFIG 16-LFCSP
• Manufacturer: Analog Devices Inc
• Series: iMEMS®r

Specifications of ADXL180WCPZ-RL

• Axis: X or Y
• Acceleration Range: ±50g, 100g, 150g, 200g, 250g, 350g, 500g
• Voltage - Supply: 5 V ~ 14.5 V
• Output Type: Analog
• Bandwidth: 100Hz ~ 800Hz Selectable
• Mounting Type: Surface Mount
• Package / Case: 16-LFQFN, CSP Exposed Pad
• Package Type: LFCSP EP
• Operating Supply Voltage (min): 5V
• Operating Temperature (min): -40C
• Operating Temperature (max): 125C
• Operating Temperature Classification: Automotive
• Product Depth (mm): 5mm
• Product Height (mm): 1.43mm
• Product Length (mm): 5mm
• Mounting: Surface Mount
• Pin Count: 16
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Sensitivity: -
• Interface: -
• Lead Free Status / Rohs Status: Compliant
• Other names: ADXL180WCPZ-RLCT

ADXL180
ASYNCHRONOUS COMMUNICATION
The ADXL180 data transmissions in their default mode run
asynchronous to the control module. In this mode, the ADXL180
timing is entirely based on the internal clock of the device. After
the initialization phases are complete, the ADXL180 begins to
transmit sensor data every 228 μs. The device transmits sensor
data until the supply voltage falls below the required minimum
operating level. If an internal error is detected, the device trans-
mits the appropriate error code until the supply voltage falls
below the required minimum operating level.
(PERFORMED AFTER SYNC
PULSE DETECTION)
ADC CONVERSION
ADXL180 RETURN
ACCELERATION
LOOP CURRENT
SYNC PULSE
ADC SAMPLE
WAVEFORM
CURRENT
DIGITAL
INPUT
1
2
t
t
P
M
=
=
t
t
DD
CLK
t
ADC
I
I
DURING PHASE 2, MODE 0
IDLE
MOD
n
TIMES THE NUMBER OF BITS TRANSMITTED
–2
Figure 11. Synchronous Data Transmission (Timing Not To Scale)
n
n
–1
–3
Figure 12. Asynchronous Mode Data Transmission Timing
n
n
n
0
DATA FRAME
–2
0
t
n
M
n
–1
2
1
n
0
n
n
t
P
0
Rev. A | Page 16 of 60
2
1
t
P
n
1
n
3
1
TIME
n
n
4
2
Asynchronous Single Device Point-to-Point Topology
A single device is wired in the point-to-point configuration
as shown in Figure 13. This configuration must be used in
asynchronous mode. Do not use two asynchronous devices on
one bus because communications errors are very likely to occur.
n
n
5
3
n
n
4
6
n
n
5
7
DATA FRAME
n
n
t
6
8
M
2
ONCE A VALID SYNC PULSE IS DETECTED
THE DEVICE WILL PERFORM AN ADC
CONVERSION ON THE (AVAILABLE) ANALOG
INPUT SIGNAL.
THE DATA FROM THE ADC CONVERSION
IS HELD UNTIL A SUBSEQUENT SYNC PULSE
IS TRANSMITTED TO THE DEVICE.
n
n
7
9
n
8
…
…
…
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