Steval-aki002v1 Evaluation Board For Adc1283 Analog To Digital Donverter User Manual (+ PDF)

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1 STEVAL-AKI002V1 Evaluation Board for ADC1283 Analog to Digital Donverter

2 Product Information

3 Product Usage Instructions

3.1 Documents / Resources

3.1.1 References

STEVAL-AKI002V1 Evaluation Board for ADC1283 Analog to Digital Donverter

Product Information

The STEVAL-AKI002V1 evaluation board is designed for the ADC1283
analog-to-digital converter. It features six direct inputs with RC
filters, one input switchable between a direct input and a
reference voltage, and one input with a rail-to-rail amplifier. The
ADC1283 is a low-power, eight-channel CMOS 12-bit analog-to-digital
converter, with an architecture based on a successive-approximation
register with an internal track-and-hold cell. It features eight
single-ended multiplexed inputs and has a straight binary output
serial data that is SPI compatible.

Product Usage Instructions

Connect the power generators to AVCC and DVCC connectors. The
allowed voltages for AVCC and DVCC are 2.7 to 5.5 V.
Connect the SPI section using Aardvark compatible pinout.
Refer to the table provided in the manual for the connection
between the STEVALAKI002V1 SPI pins and the NUCLEO-L476RG pins when
using the STSW-AKI GUI.
Connect your inputs, which include:
- IN0-IN5: direct inputs with RC filters (301 ohms/10 nF).
- IN6: input switchable through the J07 jumper between a direct
  input and a reference voltage given by a TS3431 and buffered by a
  TSX711.
- IN7: input with a rail-to-rail amplifier, TSV772, with a gain
  equals to -1.
To communicate with the ADC1283, there are two options:
- Option A: use the STSW-AKI GUI, which communicates with the
  ADC1283 of the STEVAL-AKI002V1 through the SPI protocol at 125
  ksps. The STSW-AKI allows the user to monitor each channel and plot
  data on a graph. It is also a tool to save values measured by the
  ADC1283 in a .csv file.
- Option B: use the STEVAL-AKI002V1 directly with your test
  solution. The SPI communication to access the ADC1283 registers
  giving access to the measured values of each channel is shown in
  the manual.

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UM3086
User manual
Getting started with the STEVAL-AKI002V1 evaluation board for the ADC1283 analog-to-digital converter
Introduction
The STEVAL-AKI002V1 evaluation board allows evaluating the conversion performance of the ADC1283 eight-channel analogto-digital converter, which is designed for 50 ksps to 200 ksps conversion. The board can accept external signals to measure and evaluate the ADC1283 conversion performance, based on its successive approximation register (SAR) with an internal track-and-hold cell. A reference voltage is also present on the board that can be connected to one of the channels through a jumper. The board can be supplied in standalone mode. It can also be connected to a NUCLEO-L476RG development board hosting an STM32 microcontroller, which enables further signal processing and PC communication. To monitor the STEVAL-AKI002V1 performance, when connected to the NUCLEO-L476RG, you can use the STSW-AKI GUI.
Figure 1. STEVAL-AKI002V1 evaluation board

UM3086 – Rev 1 – March 2023 For further information contact your local STMicroelectronics sales office.

www.st.com

1
1.1
1.2
1.2.1 1.2.2 1.2.3
1.2.4

UM3086
Getting started

Getting started

Features

Six direct inputs with RC filters (301 ohms/10 nF)

One input switchable between a direct input and a reference voltage, given by a TS3431 buffered by a

TSX711

One input with a rail-to-rail amplifier (TSV772 with a gain equals to -1)

SPI communication with Aardvark compatible pinout

Main components

ADC1283 The ADC1283 is a low-power, eight-channel CMOS 12-bit analog-to-digital converter for conversion from 50 ksps to 200 ksps, tested at 200 ksps (3.2 MHz clock frequency). The architecture is based on a successive-approximation register with an internal track-and-hold cell. The ADC1283 features eight single-ended multiplexed inputs. The output serial data is straight binary and is SPI compatible.
TS3431 The TS3431 is an adjustable shunt voltage reference with guaranteed temperature stability over the entire operating temperature range (- 40°C to + 125°C). The output voltage can be set to any value between 1.24 and 24 V through an external resistor bridge. Available in a SOT23-3 surface mount package, it can be used in application designs where space saving is critical.
TSX711 The TSX711 operational amplifier offers high precision functioning with low input offset voltage down to a maximum of 200 µV at 25°C. In addition, thanks to its rail-to-rail input and output functionality, it can be used on a full range input and output without limitations. Thus, the TSX711 has the big advantage of offering a large span of supply voltages, ranging from 2.7 to 16 V. The low input bias current performance makes the device extremely suited when used for signal conditioning in sensor interface applications. The high ESD tolerance (4 kV HBM) and wide temperature range make the device suitable also for the automotive market segment.
TSV7722 The TSV7722 is a 22 MHz-bandwidth unity-gain-stable amplifier. The input offset voltage of 200 µV max. (50 µV typical) at room temperature, optimized for common-mode close to ground, makes the device ideal for low-side current measurements. The TSV7722 can operate from 1.8 to 5.5 V single supply, on a load of 47 pF, allowing an easy usage as A/D converter input buffer. The device offers rail-to-rail output, excellent speed/power consumption ratio, and 22 MHz gain bandwidth product, while consuming just 1.7 mA at 5 V. It also features an ultra-low input bias current that enables the connection to photodiodes and other sensors where the current is the key value to be measured. These features make the TSV7722 ideal for high-accuracy, high-bandwidth sensor interfaces.

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How to use the board

How to use the board

To use the board, follow the procedure below.
Step 1. Connect the power generators to AVCC and DVCC connectors. The allowed voltages for AVCC and DVCC are 2.7 to 5.5 V.

Figure 2. AVCC and DVCC connectors

Step 2. Connect the SPI section. The pinout is compatible with Aardvark by TotalPhase.
Figure 3. SPI connection pins

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UM3086
How to use the board

Step 3. When using the STSW-AKI GUI, refer to the table below for the connection between the STEVALAKI002V1 SPI pins and the NUCLEO-L476RG pins.

Table 1. Pinout connection between the STEVAL-AKI002V1 and the NUCLEO-L476RG

NUCLEO-L476RG pin PB12 PB13 PB14 PB15

STEVAL-AKI002V1 SPI pin Chip select SCLK MISO MOSI

Step 4.

Connect your inputs. Step 4a. IN0-IN5: direct inputs with RC filters (301 ohms/10 nF).
Step 4b. IN6: input switchable through the J07 jumper between a direct input and a reference voltage given by a TS3431 and buffered by a TSX711.
Step 4c. IN7: input with a rail-to-rail amplifier, TSV772, with a gain equals to -1.

Figure 4. Board section for input connection

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UM3086
Communication with the ADC1283

Communication with the ADC1283

Option A: use the STSW-AKI GUI
The STEVAL-AKI002V1 can be used with the STSW-AKI GUI. To use it. It is necessary to use a nucleo-64 L476RG. The STSW-AKI runs on an STM32 Nucleo-64 development board. It communicates with the ADC1283 of the STEVAL-AKI002V1 through the SPI protocol at 125 ksps. The STSW-AKI allows the user to monitor each channel and plot data on a graph. It is also a tool to save values measured by the ADC1283 in a .csv file. For more information on the STSW-AKI GUI, go to the relevant ST web page.

Figure 5. STSW-AKI: GUI for ADC120 and ADC1283

Option B: use the STEVAL-AKI002V1 directly with your test solution
The STEVAL-AKI002V1 can be plugged directly to your solution. The SPI communication to access to the ADC1283 registers giving access to the measured values of each channel is shown in the next tables.

Bit # Symbol

7 (MSB) DONTC

6 DONTC

Table 2. Control register bits

5 ADD2

4 ADD1

3 ADD0

2 DONTC

1 DONTC

0 DONTC

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Bit # 7, 6, 2, 1, 0
5 4 3

Symbol DONTC ADD2 ADD1 ADD0

ADD2 0 0 0 0 1 1 1 1

ADD1 0 0 1 1 0 0 1 1

UM3086
Communication with the ADC1283
Table 3. Control register bit description Description Don’t care
These bits determine which input channel is converted, as per Table 4

Table 4. Input channel description

ADD0 0 1 0 1 0 1 0 1

Address value (h) 00 08 10 18 20 28 30 38

Input channel IN0 IN1 IN2 IN3 IN4 IN5 IN6 IN7

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UM3086
VREF measurement and inverter amplifier

VREF measurement and inverter amplifier

A) 1.8 V reference voltage on channel 6
The STEVAL-AKI002V1 includes a reference voltage based on a TS3431 and buffered by a TSX711. This reference voltage can be measured on the channel IN6 by selecting “REF” on the J07 jumper. The reference voltage varies slightly according to the voltage supply. It is still stable around 1.8 V. Hence, it is possible to use it to control the voltage supply applied on the ADC1283 and calibrate it.

Figure 6. 1.8 V reference voltage can be used on IN6

B) Inverter amplifier with a gain of -1 on IN7 On the IN7 input, a TSV772 is used in the inverter function with a gain of -1. This gives the opportunity to test the functionality of the TSV772 and measure negative values through the ADC1283. This inverter is directly connected to IN7. The negative value between -AVCC and GND must be applied on IN7.
Figure 7. -1 inverter on IN7

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UM3086
STEVAL-AKI002V1 versions

STEVAL-AKI002V1 versions

Table 5. STEVAL-AKI002V1 versions

PCB version

Schematic diagrams

Bill of materials

STEVAL$AKI002V1A (1)

STEVAL$AKI002V1A schematic diagrams

STEVAL$AKI002V1A bill of materials

1. This code identifies the STEVAL-AKI002V1 expansion board first version. It is printed on the board PCB.

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UM3086 – Rev 1

Schematic diagram

Figure 8. STEVAL-AKI002V1 circuit schematic

J01 AVCC
COLOR GREEN
J03 AVCC
J02 GND
COLOR BLACK

AVCC

C01 22µF C Ca se

R01 680R
D01

GND GND

J11 GND

J12 INPUT

GND

R10
301R
R11
301R
R12
301R
R13
301R
R14
301R
R15
301R
R16
301R

C10 10nF

C11 10nF

C12 10nF

C13 10nF

C14 10nF

C15 10nF

C16 10nF

GND

IN6
REF J07 IN6 SET UP

C02 100nF

GND

SPI1_SCK SPI1_MOSI SPI1_CS

16 SCLK 14 DIN
1 /CS

IN0

4 IN0

IN1

5 IN1

IN2

6 IN2

IN3

7 IN3

IN4

8 IN4

IN5

9 IN5

SIP

10 IN6

11 IN7

VA 2 VB 13

R03
49.9R
NC

C04 100nF
GND

DOUT 15

U01 ADC1283

AOP 3 AGND
12 DGND

GND

AVCC

REFERENCE VOLTAGE

R21
499R
C21 100nF
U21 TS3431

R22 1.8K 0.1%

C22 10µF SMT 0805
3.9K R23 0.1%

U22

TSX711

V+

-4

V-

C23

22nF

GND

R24
330R
C24 10nF

GND
10K R31

AVCC

U31

TSV772

V+

-2

V-

C31

22nF

R33
330R
C32 10nF

GND

R32

10K

GND

DVCC

R02 680R
D02

C03 22µF C Ca se

GND GND

J04 DVCC
COLOR RED
J06 DVCC
J05 GND
COLOR BLACK

J08 SIP 2X10 MALE

SPI1_MISO SPI1_SCK SPI1_CS

SPI1_MOSI GND

GND

IN7

COM M ENT
– All passives components without package indication are SMT-0603 package – All test jack components without package indication are HORIZONTAL TEST JACK 2MM package – All connector without package indication are MALE HEADER SIP with 2.54 mm STEP package

UM3086
Schematic diagram

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UM3086
Bill of materials

Bill of materials

Item 1 2 3 4 5 6 7 8
9
10
11
12
13
14 15 16 17

Q.ty 2 3 9 1 2 1 1 1
2
2
1
1
1
2 1 4 4

Table 6. STEVAL-AKI002V1 bill of materials

Ref.

Part/value

Description

C01, C03

22µF C case 25V ±20%

Tantalum capacitors

C02, C04, C21

100nF SMT

Ceramic

0603 50V ±10% capacitors

C10, C11, C12, C13, C14, C15, C16, C24, C32

10nF SMT 0603 Ceramic

50V ±10%

capacitors

C22

10µF SMT 0603 Ceramic

25V ±10%

capacitors

C23, C31

22nF SMT 0603 Ceramic

50V ±10%

capacitors

COLOR

D01

GREEN SMT LED

0603 2V 20mA

COLOR RED

D02

SMT 0603 2V LED

20mA

COLOR GREY

J01

HORIZONTAL TEST JACK

Test jack

2MM 2100 V 5A

J02, J05

COLOR BLACK HORIZONTAL TEST JACK 2MM 2100 V 5A

Test jack

J03, J06

SIP 1X2 MALE SIP 2 STEP 2.54MM 250VAC 3A

Pin header

COLOR RED

J04

HORIZONTAL TEST JACK

Test jack

2MM 2100 V 5A

SIP 1X3 MALE

J07

SIP 1X3 STEP Connector

2.54MM

header

250VAC 3A

SIP 2X10 MALE

J08

SIP 2X5 STEP 2.54MM

Pin header

250VAC 3A

J11, J12

SIP 1X8 MALE SIP 1X8 STEP 2.54MM 250VAC 3A

Pin header

JU07

COLOR BLACK STEP 2.54 MM Jumper 250VAC 3A

M-01, M-02, M-03, M-04

10MM HOLE M2

Threaded spacer

M-05, M-06, M-07, M-08

6MM HOLE M3 Screw

Manufacturer

Order code

KEMET

T491C226M025AT

WURTH ELEKTRONIK

885012206095

WURTH ELEKTRONIK

885012206089

MURATA

GRM21BR61E106KA73L

WURTH ELEKTRONIK

885012206091

WURTH ELEKTRONIK

150060VS55040

WURTH ELEKTRONIC

150060RS55040

JOHNSON CINCH CONNECTIVIT Y
JOHNSON CINCH CONNECTIVIT Y

105-0754-001 105-0753-001

WURTH ELEKTRONIK

61300211121

JOHNSON CINCH CONNECTIVIT Y

105-0752-001

WURTH ELEKTRONIC

61300311121

WURTH ELEKTRONIK

61301021121

WURTH ELEKTRONIK

61300811121

WURTH ELEKTRONIK

609002115121

WURTH ELEKTRONIK
MULTICOMP PRO

970100244 MP006574

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UM3086
Bill of materials

Item 18 19 20 21 22 23 24 25 26
27
28
29

Q.ty 1 1 7 1 1 1 2 2 1
1
1
1

Ref.

Part/value

Description Manufacturer

Order code

R01, R102

680R SMT 0603 0.25W±1%

Resistor

PANASONIC ERJPA3F6800V

R03

NC SMT 0603 Resistor (not

±1%

mounted)

PANASONIC

ERJPA3F49R9V

R10, R11, R12, R13, R14, R15, R16

301R SMT 0603 0.25W±1%

Resistor

PANASONIC ERJPA3F3010V

R21

449R SMT 0603 ±1%

Resistor

PANASONIC ERJPA3F4990V

R22

1.8K SMT 0603 0.1%

Resistor

YAGEO

RT0603BRD071K8L

R23

3.9K SMT 0603 0.1%

Resistor

YAGEO

RT0603BRD073K9L

R24, R33

330R SMT 0603 ±1%

Resistor

PANASONIC ERJPA3F3300V

R31, R32

10K SMT 0603 ±1%

Resistor

PANASONIC ERJPA3F1002V

8-channel, 50

U01

ADC1283IPT, TSSOP-16L

ksps to 200 ksps, 12-bit A-D

converter

ADC1283IPT

1.24 V

U21

TS3431CILT, SOT23

adjustable shunt voltage

reference

TS3431CILT

Precision (200

U22

TSX711ILT, SOT23-5L

µV), rail-to-rail 16 V CMOS op- ST amp, single,

GBP 2.7 MHz

TSX711ILT

High bandwidth

U31

TSV7722IST, MiniSO-8

(22 MHz) low offset (200 µV) ST low-rail 5 V op-

amp

TSV7722IST

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UM3086
Regulatory compliance information

Regulatory compliance information

Notice for US Federal Communication Commission (FCC)
For evaluation only; not FCC approved for resale FCC NOTICE – This kit is designed to allow: (1) Product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and (2) Software developers to write software applications for use with the end product. This kit is not a finished product and when assembled may not be resold or otherwise marketed unless all required FCC equipment authorizations are first obtained. Operation is subject to the condition that this product not cause harmful interference to licensed radio stations and that this product accept harmful interference. Unless the assembled kit is designed to operate under part 15, part 18 or part 95 of this chapter, the operator of the kit must operate under the authority of an FCC license holder or must secure an experimental authorization under part 5 of this chapter 3.1.2.
Notice for Innovation, Science and Economic Development Canada (ISED)
For evaluation purposes only. This kit generates, uses, and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to Industry Canada (IC) rules. À des fins d’évaluation uniquement. Ce kit génère, utilise et peut émettre de l’énergie radiofréquence et n’a pas été testé pour sa conformité aux limites des appareils informatiques conformément aux règles d’Industrie Canada (IC).
Notice for the European Union
This device is in conformity with the essential requirements of the Directive 2014/30/EU (EMC) and of the Directive 2015/863/EU (RoHS).
Notice for the United Kingdom
This device is in compliance with the UK Electromagnetic Compatibility Regulations 2016 (UK S.I. 2016 No. 1091) and with the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012 (UK S.I. 2012 No. 3032).

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Revision history
Date 08-Mar-2023

UM3086

Table 7. Document revision history

Revision 1

Initial release.

Changes

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UM3086
Contents
Contents
1 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2 Main components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2.1 ADC1283 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2.2 TS3431 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2.3 TSX711 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2.4 TSV7722. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 How to use the board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 3 Communication with the ADC1283 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 VREF measurement and inverter amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 STEVAL-AKI002V1 versions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6 Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 7 Bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 8 Regulatory compliance information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 List of tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 List of figures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

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UM3086
List of tables

List of tables

Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7.

Pinout connection between the STEVAL-AKI002V1 and the NUCLEO-L476RG . . . . . . . . . . . . . . . . . . . . . . . . . 4 Control register bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Control register bit description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Input channel description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 STEVAL-AKI002V1 versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 STEVAL-AKI002V1 bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

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UM3086
List of figures

List of figures

Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8.

STEVAL-AKI002V1 evaluation board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 AVCC and DVCC connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 SPI connection pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Board section for input connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 STSW-AKI: GUI for ADC120 and ADC1283 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.8 V reference voltage can be used on IN6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 -1 inverter on IN7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 STEVAL-AKI002V1 circuit schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

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UM3086
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UM3086 – Rev 1

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