EV-ADA4571RSDZ

EV-ADA4571RSDZ User Guide UG-1169
Rev. 0 | Page 7 of 9
Vsin vs. Vcos Plot
The Vsin vs Vcos graph shows the electrical angle from the
ADA4571. However, there is more information shown in
Figure 10, such as the radius of the output values that can give
further diagnostic information to system. As long as the sensor
is fully saturated, or the applied magnetic field strength exceeds
25 kA/m, the radius value remains unchanged at a constant
temperature. As the AMR effect is smaller at high temperatures,
the radius value changes with respect to temperature. See the
ADA4571 data sheet for the temperature coefficient values for
the output amplitude for the V
SIN
and the V
COS
channels.
16135-010
Figure 10. Vsin vs Vcos Graph
Digital Inputs
To toggle two digital inputs on the ADA4571, click the buttons
in the Digital Inputs pane (see Figure 11).
The Power Down Disabled button puts the ADA4571 in a low
power state by disabling the internal circuitry and placing the
outputs in a high impedance state. See the ADA4571 data sheet
for full details on the power-down current of the device.
The Gain Control Disabled button puts the device in gain control
mode (see Figure 11). This mode alters the bridge supply voltage
based on the internal temperature value of the ADA4571.
Through gain control mode, the output amplitude temperature
coefficient of the ADA4571 reduces. See the ADA4571 data sheet
for full details on output amplitude vs. temperature with the gain
control mode enabled and disabled.
16135-011
Figure 11. Digital Inputs Pane
Offset Calibration
An offset calibration is required to maximize the accuracy of
the ADA4571. The V
SIN
and V
COS
channels have inherent voltage
offsets due to a resistor mismatch within the AMR sensor bridges.
See the ADA4571 data sheet for full details on the offset voltage
ranges for the outputs.
There are a few methods that can null the offsets for the outputs.
The ADA4571 GUI uses a maximum/minimum value to calculate
these offsets. To run an offset calibration, click Run Cal (see
Figure 12). When Run Cal is clicked, rotate the magnetic stimulus
slowly through an entire mechanical rotation. This slow rotation
ensures that the maximum and minimum output voltages are
found for each channel.
The offset of each channel is calculated as the midpoint between
the maximum and mid values captured during the calibration
cycle. During normal operation, the offset value for each channel is
subtracted from the current value before calculating the magnetic
angle.
16135-012
Figure 12. Offset Calibration Pane
UG-1169 EV-ADA4571RSDZ User Guide
Rev. 0 | Page 8 of 9
MOTHERBOARD SCHEMATIC
16135-013
DNI
49.9
49.9
571-0100
1N5818
10UF
49.9
571-0500
DNI
DNI
210K
49.9
49.9
MOLEX22-03-2031
MOLEX22-03-2031
0.1UF
49.9
49.9
49.9
64.9K
FX8-120S-SV(21)
0.1UF
FX8-120S-SV(21)
MOLEX22-03-2031
DNI
AD7866ARUZ
0.1UF
5K
DNI
10000PF
10000PF
0.1UF
DNI
5K
.47UF
ADP3336ARMZ
1UF
10UF
10UF
.47UF
0.1UF
100K
1UF
M24C64-WMN6TP
R13
R12
R11
TP7
C14 C13
R9
R6
R10
R8
C11
R7
P10
C10
C6
C5
TP2
SNS1
C15
D1
1P 1P
U3
C9
JP3
JP1
R5
C8
C7
R4
P2
P3
C4
C2
C3
R2
U2
R3
U1
C1
R1
P7
P8
A0_7866
SCL_0_BUF
+ SUPPLY
SIN_OUT
DUT PD
+5V ANALOG
USB_VBUS
DUT TC
DUT PD
MISO_BUF
SEL_A_BUF
EEPROM_A0
SDA_0
SCL_0
SDA_0_BUF
A0_7866
+5V_REG
+5V ANALOG
DUT VTEMP
DUT TC
+5V ANALOG
SIN_OUT
MISO_BUF
COS_OUT
+5V ANALOG
+5V ANALOGCLK_BUF
SEL_A_BUF
+3V ANALOG
COS_OUT
CLK_BUF
+ SUPPLY
+5V_REG
SPI_MISO
SPI_SEL_A
SPI_CLK
+3V ANALOG
+3V ANALOG
SCL_0_BUF
USB_VBUS
EEPROM_A0
SDA_0_BUF
1
3
2
1
1
21
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
10
17
4
5
6
7
18
1
11
13
16
15
14
2
9
19
12
83
20
1
1
2
2
3
2
1
3
2
1
7
4
8
5
6
3
2
1
6
3
2
1
8
7
4
5
2
1
REF_SELECT
A0
CS_N
SCLK
VDRIVE
DOUTB
DOUTA
DGND
DVDDAVDD
RANGE
VREF
DCAPA
AGND
VA1
VA2
VB1
VB2
AGND
DCAPB
131-3701-261 131-3701-261DNIDNI
TP5TP4
J2J1
COS_OUTSIN_OUT
11
1
5432 5432
1
VSS
SCL
SDA
WC_N
E2
E1
E0
VCC
OUT2
IN
IN1
OUT
OUT1
FB
GNDSD_N
22NF
ADA4571ARZ
C12
U4
TP6
+5V ANALOG
DUT PDDUT TC
COS_OUT
DUT VTEMPSIN_OUT
54
72
8
63
1
1
PD
VDD
GND
VTEMPVSIN
GND
VCOS
GC
F
igure 13. ADA4571 Evaluation Motherboard Schematic
EV-ADA4571RSDZ User Guide UG-1169
Rev. 0 | Page 9 of 9
NOTES
ESD Caution
ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection
circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality.
Legal Terms and Conditions
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. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”) and Analog Devices, Inc.
(“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal,
temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and agrees that the Evaluation Board is provided
for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted is expressly made subject to the following additional
limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board; and (ii) permit any Third Party to access the Evaluation Board. As used herein, the term
“Third Party includes any entity other than ADI, Customer, their employees, affiliates and in-house consultants. The Evaluation Board is NOT sold to Customer; all rights not expressly granted herein, including
ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all be considered the confidential and proprietary information of ADI. Customer may
not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of use of the Evaluation Board or termination of this Agreement, Customer agrees to
promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any
occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited to soldering or any other activity that affects the material content of the Evaluation Board.
Modifications to the Evaluation Board must comply with applicable law, including but not limited to the RoHS Directive. TERMINATION. ADI may terminate this Agreement at any time upon giving written notice
to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED AS IS AND ADI MAKES NO
WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT. ADI SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUARANTEES, OR WARRANTIES, EXPRESS OR IMPLIED, RELATED
TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL
PROPERTY RIGHTS. IN NO EVENT WILL ADI AND ITS LICENSORS BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES RESULTING FROM CUSTOMER’S POSSESSION OR USE OF
THE EVALUATION BOARD,
INCLUDING
BUT NOT LIMITED TO LOST PROFITS, DELAY COSTS, LABOR COSTS OR LOSS OF GOODWILL. ADI’S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITED TO THE
AMOUNT OF ONE HUNDRED US DOLLARS ($100.00). EXPORT. Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable
United States federal laws and regulations relating to exports. GOVERNING LAW. This Agreement shall be governed by and construed in accordance with the substantive laws of the Commonwealth of
Massachusetts (excluding conflict of law rules). Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby
submits to the personal jurisdiction and venue of such courts. The United Nations Convention on Contracts for the International Sale of Goods shall not apply to this Agreement and is expressly disclaimed.
©2017 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
UG16135-0-8/17(0)

EV-ADA4571RSDZ

Mfr. #:
Manufacturer:
Analog Devices Inc.
Description:
Magnetic Sensor Development Tools 8 lead SOIC Evaluation Board
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet