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ADXRS150EB
H11550150H11543/s Single Chip Rate Gyro
Evaluation Board
GENERAL DESCRIPTION
The ADXRS150EB is a simple evaluation board that allows the
user to quickly evaluate the performance of the ADXRS150ABG
yaw rate gyro. No additional external components are required
for operation. The ADXRS150EB has a 20-lead dual-in-line
(0.3 inch width by 0.1 inch pin spacing) interface that allows
the user to easily prototype products without having to deal with
BGA soldering. The 0.4 square inch outline of the ADXRS150EB
is still among the smallest gyros available today.
CIRCUIT DESCRIPTION
The schematic of the ADXRS150EB is shown in Figure 1.
It is identical to the suggested application shown in the
ADXRS150ABG data sheet.
The analog and power grounds (AGND and PGND) have
separate ground planes and are joined at one point. The user
may cut this trace if separate ground schemes are desired.
Note that the analog supply voltage and charge pump supply volt-
age (AVCC and PDD) are not connected on the ADXRS150EB
and that users must connect these as appropriate to their
application.
The parts layout of the ADXRS150EB is shown in Figure 2,
and the parts list for the ADXRS150EB is shown in Table I.
As delivered, the ADXRS150EB is set for 40 Hz bandwidth
(C
OUT
= 22 nF). The user may add an external capacitor to
further reduce the bandwidth and improve the noise floor.
SPECIAL NOTES ON HANDLING
Note that the ADXRS150EB is not reverse polarity protected.
Reversing the power supply or applying inappropriate voltages
to any pin (outside the data sheet’s Absolute Maximum Ratings)
may damage the ADXRS150EB.
ADXRS150ABG
7D
7E
4F 5F 1C
14
19
20
18
17
13
12 8
4
1
7
9
2
3
5A
4A
7B
7C
6G 2G 1D
3A
1E
3F
1B
C6
C2
C4
C3
C1
C5
C7
ST1
SUMJ
RATEOUT
TEMP
2.5V
AVCC
CMID
AGND
ST2
CP5
CP1
CP2
CP4
CP3
PDD
PGND
10 11
Figure 1. ADXRS150EB Schematic
PIN 20
PIN 1
0.1"
0.9"
0.3"
C2 C4
C1 C3
C6 C7
C5
Figure 2. ADXRS150EB Parts Layout
Table I. ADXRS150EB Parts List
Component Value (nF)
C1 100
C2 22
C3 22
C4 22
C5 100
C6 47
C7 100
C
03542
–0–1/03(0)
PRINTED IN U.S.A.