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One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
GENERAL DESCRIPTION
The EVAL-ADXRS622 is a simple evaluation board that
allows quick evaluation of the performance of the ADXRS622
±250°/sec yaw rate gyro. No additional external components are
required for operation. The EVAL-ADXRS622 has a 20-lead,
dual in-line (0.3 inch width × 0.1 inch pin spacing) interface
that allows easy prototyping of products without BGA
soldering.
CIRCUIT DESCRIPTION
The schematic of the EVAL-ADXRS622 is shown in Figure 1.
The numbers that appear in squares correspond to the pins on
the evaluation board. It is identical to the suggested application
shown in the ADXRS622 data sheet.
The analog and power grounds (AGND and PGND) have
separate power planes in this evaluation board to accommodate
application-specific grounding schemes. If the user requires
only a single ground plane, these nodes can be shorted together.
Both AGND and PGND must be grounded for the evaluation
board to operate properly.
Note that the analog supply voltage and charge pump supply
voltage (AV
and V
) are not connected on the EVAL-
CC
DD
ADXRS622 and that the user can connect these as appropriate
to their application.
The parts layout of the EVAL-ADXRS622 is shown in Figure 2,
and the parts list for the EVAL-ADXRS622 is shown in Table 1.
As delivered, the EVAL-ADXRS622 is set to 10 Hz bandwidth
(C
= 100 nF). The user can add an external capacitor to
OUT
further reduce the bandwidth and improve the noise floor.
SPECIAL NOTES ON HANDLING
Note that the EVAL-ADXRS622 is not reverse polarity
protected. Reversing the power supply or applying
inappropriate voltages to any pin (outside the Absolute
Maximum Ratings listed in the ADXRS622 data sheet) may
damage the EVAL-ADXRS622.
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Evaluating the ±250°/Sec, Single Chip Rate Gyro
Evaluation Board User Guide
SCHEMATICS AND PARTS LIST/LAYOUT
ST2
10
CP5
14
C6
CP1
19
CP2
20
C2
CP4
18
C4
CP3
17
V
13
DD
PGND
12
PIN 20
C2
C1
PIN 1
0.1"
Table 1. EVAL-ADXRS622 Parts List
Component
C1
C2
C3
C4
C5
C6
C7
Rev. 0 | Page 1 of 2
C3
7D
4F
5F
1C
5A
1B
4A
3F
ADXRS622
7B
1E
7C
3A
C1
7E
6G
2G
1D
C7
NC = NO CONNECT
Figure 1. EVAL-ADXRS622 Schematic
TOP VIEW
C4
C6
C3
C5
0.9"
Figure 2. EVAL-ADXRS622 Parts Layout
Value (nF)
100
22
100
22
100
100
100
UG-150
ST1
11
SUMJ
3
2
RATEOUT
TEMP
9
V
7
RATIO
AV
1
CC
C5
4
NC
8 AGND
C7
0.3"
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Summary of Contents for Analog Devices EVAL-ADXRS622
- Page 1 Figure 2. EVAL-ADXRS622 Parts Layout The parts layout of the EVAL-ADXRS622 is shown in Figure 2, Table 1. EVAL-ADXRS622 Parts List and the parts list for the EVAL-ADXRS622 is shown in Table 1. Component Value (nF) As delivered, the EVAL-ADXRS622 is set to 10 Hz bandwidth = 100 nF).
- Page 2 By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you have read and agreed to the Agreement.
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