ADA4570BRZ-R7 [ADI]
Integrated AMR Angle Sensor and Signal Conditioner with Differential Outputs;
| 型号： | ADA4570BRZ-R7 |
| 厂家： | 
ADI |
| 描述： | Integrated AMR Angle Sensor and Signal Conditioner with Differential Outputs |
| 文件： | 总14页 (文件大小：1094K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Data Sheet
ADA4570
Integrated AMR Angle Sensor and Signal Conditioner with Differential Outputs
FEATURES
FUNCTIONAL BLOCK DIAGRAM
► Contactless angular measurement
► High precision 180° angle sensor
► Typical angular error of ±0.1°
► Low output noise of 850 μV rms
► Sine and cosine differential outputs
► Ratiometric analog voltage outputs
► Negligible hysteresis
► SAR or Σ-Δ ADC compatible
► Temperature compensated AMR bridge
► Industrial temperature range: −40°C to +125°C
► Automotive temperature range: −40°C to +150°C
► EMI resistant
► Fault diagnostics
► VDD from 2.7 V to 5.5 V
► Minimal phase error of 0.85° at 30,000 rpm
► AEC-Q100 qualified for automotive applications
► Single chip solution
Figure 1.
GENERAL DESCRIPTION
► Available in an 8-lead SOIC package
The ADA4570 is an anisotropic magnetoresistive (AMR) sensor
with integrated signal conditioning amplifiers and analog-to-digi-
tal converter (ADC) drivers. The ADA4570 produces two differen-
tial analog outputs that indicate the angular position of the sur-
rounding magnetic field.
APPLICATIONS
► Absolute position measurement (linear and angle)
► Brushless dc motor control and positioning
► Actuator control and positioning
The ADA4570 consists of two die within one package, an AMR sen-
sor, and a fixed gain instrumentation amplifier. The ADA4570 de-
livers amplified differential cosine and sine output signals, with
respect to the angle, when the magnetic field is rotating in the
x-axis and the y-axis (x-y) plane. The output voltage range is
ratiometric to the supply voltage.
► Contactless angular measurement and detection
► Magnetic angular position sensing
The sensor contains two Wheatstone bridges, at a relative angle
of 45° to one another. A complete rotation of a dipole magnet
produces two periods on the sinusoidal outputs. Therefore, the
magnetic angle (α) calculated from the SIN and COS differential
outputs represents the physical orientation of the magnet with
respect to the ADA4570 in the 0° to 180° measurement range.
Within a homogeneous field in the x-y plane, the output signals of
the ADA4570 are independent of the physical placement in the z
direction (air gap).
The ADA4570 is available in an 8-lead SOIC package.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable "as is". However, no responsibility is assumed by Analog
Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to
change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
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Data Sheet
ADA4570
TABLE OF CONTENTS
Features................................................................ 1
Applications........................................................... 1
Functional Block Diagram......................................1
General Description...............................................1
Specifications........................................................ 3
Absolute Maximum Ratings...................................5
Electrostatic Discharge (ESD) Ratings...............5
Thermal Resistance........................................... 5
ESD Caution.......................................................5
Pin Configuration and Function Descriptions........ 6
Typical Performance Characteristics.....................7
Terminology........................................................... 9
Theory of Operation.............................................10
Applications Information...................................... 11
Supply and ADC Reference............................. 11
Connecting the ADA4570.................................11
Angle Calculation..............................................11
Signal Dependence on Air Gap Distance ........11
Signal Offset and Calibration............................11
VTEMP Output Pin ..........................................12
Power Consumption ........................................12
Diagnostic.........................................................12
Outline Dimensions............................................. 13
Ordering Guide.................................................13
Automotive Products........................................ 14
REVISION HISTORY
7/2021—Revision 0: Initial Version
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Rev. 0 | 2 of 14
Data Sheet
ADA4570
SPECIFICATIONS
VDD = 2.7 V to 5.5 V, differential load capacitance (CL) = 22 nF, load resistance (RL ) = 200 kΩ to GND. The operating temperature range
(OTR) for the ADA4570B is −40°C ≤ TA ≤ +125°C and for the ADA4570WH is −40°C ≤ TA ≤ +150°C. The angle inaccuracies referred to the
homogenous magnetic field with a minimum flux density of 30 mT. All listed environmental conditions are valid, unless otherwise stated.
Table 1.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
MAGNETIC CHARACTERISTICS
Magnetic Flux Density, BEXT
30
mT
The stimulating magnetic flux density
in the x-y sensor plane necessary to
ensure operation within specified limits
Magnetic Field Rotational Frequency
Reference Position Error
50,000
±50
rpm
μm
Reference Angle Error
±2
Degrees
ANGULAR PERFORMANCE
Angle Measurement Range
Uncorrected Angular Error1 (αUNCORR
ADA4570B/ADA4570WH
0
180
Degrees
)
±3
±3
±4
±5
Degrees
Degrees
Degrees
Degrees
TA = −40°C
TA = 25°C
TA = 125°C
TA = 150°C
ADA4570WH
Single Point Calibration Angular Error2 (αCAL
ADA4570B/ADA4570WH
ADA4570WH
)
±0.5
±0.7
Degrees
Degrees
TA = −40°C to +125°C
TA = −40°C to +150°C
Dynamic Angular Error3, 4 (αDYNAMIC
ADA4570B/ADA4570WH
ADA4570WH
)
±0.1
±0.1
±0.4
±0.5
Degrees
Degrees
TA = −40°C to +125°C
TA = −40°C to +150°C
OUTPUT PARAMETERS
Differential Peak Amplitude (VAMP
ADA4570B/ADA4570WH
)
56
52
38
35
7
77
72
57
55
93
% VDD
% VDD
% VDD
% VDD
% VDD
TA = −40°C
TA = 25°C
TA = 125°C
TA = 150°C
ADA4570WH
Single-Ended Output Voltage Range5 (VO_SWING
)
Single-Ended Output Voltage Low5, 6 (VOL
ADA4570B/ADA4570WH
ADA4570WH
)
3.75
5
% VDD
% VDD
TA = −40°C to +125°C
TA = −40°C to +150°C
Differential Output Referred Offset Voltage
(VOFFSET
)
ADA4570B/ADA4570WH
3.75
3.9
% VDD
% VDD
% peak
µs
TA = −40°C to +125°C
TA = −40°C to +150°C
Differential measurement
ADA4570WH
Amplitude Synchronism7 (k)
Amplifier Propagation Delay8 (tDEL
99
101
)
2.35
0.85
Phase Error8, 9 (ΦERR
)
Degrees
Degrees
µV rms
Orthogonality Error
±0.05
Output Noise (VNOISE
)
850
Bandwidth = 80 kHz, referred to output
(RTO)
Output Series Resistance (RO)
60
Ω
Output −3 dB Cutoff Frequency (f−3dB
Power Supply Rejection (PSRR)
)
175
80
kHz
dB
Amplifier bandwidth, CL = 10 pF
Measured as output variation
from VDD/2, VDD = 5.0 V, TA= 25°C
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Data Sheet
ADA4570
SPECIFICATIONS
Table 1.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
Output Short-Circuit Current10 (ISC
)
15
mA
Short to GND per output pin,
VDD = 5.0 V, TA = 25°C
16
mA
Short to VDD per output pin,
VDD = 5.0 V, TA = 25°C
POWER SUPPLY
Supply Voltage Range (VDD
Supply Current Range (IDD
Power-Up Time (tPWRUP
)
2.7
2.9
5.5
6.3
150
V
)
4.5
mA
μs
No load
)
The time measured between VDD
reaching 90% of the supply voltage
and angular measurement result being
within 2° of the final angle
TEMPERATURE SENSOR
Error Over Temperature (TERR
Temperature Voltage Range (TRANGE
Temperature Coefficient (TCO
)
5
°C
)
0
82
40
% VDD
mV/V/°C
% VDD
Ω
TA = −40°C to +150°C
)
3.173
VTEMP Output Voltage Range
VTEMP Output Impedance
VTEMP Load Capacitance
18
TA = 25°C
600
22
3
Buffered output
nF
Optional load capacitance
VTEMP Short-Circuit Current (ISC_VTEMP
)
mA
Short-circuit to GND, VDD = 5.0 V,
TA = 25°C
LOAD CAPACITOR
External Differential Load Capacitance11 (CL)
22
nF
1
2
αUNCORR is the total mechanical angular error after the arctan computation. This error includes all sources of error over temperature before calibration. Error components
such as offset, amplitude synchronism, amplitude synchronism drift, thermal offset drift, phase error, hysteresis, orthogonality error, and noise are included.
αCAL is the total mechanical angular error after the arctan computation. This error includes all sources of error over temperature after an initial offset (nulling) is performed
at TA = 25°C. Error components such as amplitude synchronism drift, amplifier gain matching, thermal offset drift, phase error, hysteresis, orthogonality error, and noise are
included.
3
4
Magnetic field rotation frequency = 1000 rpm.
αDYNAMIC is the total mechanical angular error after the arctan computation. This error includes all sources of error over temperature after a continuous background
calibration is performed to correct offset and amplitude synchronism errors. Error components such as phase error, hysteresis, orthogonality error, noise, and lifetime drift
are included.
5
Applies to the VSIN+, VSIN−, VCOS+, and VCOS− outputs.
Broken bond wire detected.
6
7
Peak-to-peak amplitude matching. k = 100 × VSIN/VCOS.
Magnetic field rotation frequency = 30000 rpm.
8
9
Rotation frequency dependent phase error after offset correction, amplitude calibration, and arctan calculation.
10
The short-circuit condition specified is present for each output at the following mechanical angles: short to VDD with VSIN+ at α = 135°, VSIN− at α = 45°, VCOS+ at α = 0°,
and VCOS− at α = 90° and short to GND with VSIN+ at α = 45°, VSIN− at α = 135°, VCOS+ at α = 9°, and VCOS− at α = 0°.
11
Solder CL/4 between VSIN+ and VSIN− and between VCOS+ and VCOS−. Solder CL/2 between VSIN+ to GND, VSIN− to GND, VCOS+ to GND, and VCOS− to GND.
Solder close to package.
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Data Sheet
ADA4570
ABSOLUTE MAXIMUM RATINGS
Table 2.
Table 3. ADA4570, 8-Lead SOIC_N
Parameter
Rating
ESD Model
Withstand Threshold (V)
Temperature
HBM
CDM
4000
1250
Operating Range
ADA4570B
−40°C to +125°C
−40°C to +150°C
−65°C to +150°C
−0.3 V to +6 V
THERMAL RESISTANCE
ADA4570WH
Thermal performance is directly linked to printed circuit board
(PCB) design and operating environment. Careful attention to PCB
thermal design is required.
Storage Range
Supply Voltage (VDD
)
Stresses at or above those listed under Absolute Maximum Ratings
may cause permanent damage to the product. This is a stress
rating only; functional operation of the product at these or any other
conditions above those indicated in the operational section of this
specification is not implied. Operation beyond the maximum operat-
ing conditions for extended periods may affect product reliability.
θJA is the junction to ambient temperature, and θJC is the junction to
case temperature.
Table 4. Thermal Resistance
Package Type1
θJA
θJC
Unit
R-8
120
39
°C/W
ELECTROSTATIC DISCHARGE (ESD) RATINGS
1
Thermal performance per JEDEC defined (JESD-51) test specifications.
The following ESD information is provided for handling of ESD-sen-
sitive devices in an ESD protected area only.
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Charged devi-
ces 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.
Human Body Model (HBM) tested according to standard JESD22-
C101. Charge Device Model (CDM) tested according to standard
ESDA/JEDEC JS-001-2011.
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Data Sheet
ADA4570
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Figure 2. Pin Configuration
Table 5. Pin Function Descriptions
Pin No.
Mnemonic
Description
1
2
3
4
5
6
7
8
VCOS−
VTEMP
VSIN−
RSVD
VSIN+
VDD
Analog Negative Cosine Output.
Analog Temperature Output. The VTEMP pin must be left open when not in use.
Analog Negative Sine Output.
Reserved. The RSVD pin must be connected to GND.
Analog Positive Sine Output.
Power Supply.
VCOS+
GND
Analog Positive Cosine Output.
Ground.
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Data Sheet
ADA4570
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 3. Differential Output Amplitude vs. Relative Mechanical Angle
Figure 6. Single Point Calibration Angular Error vs. Temperature
Figure 4. Uncorrected Angular Error Histogram
Figure 7. Dynamic Angular Error Histogram
Figure 5. Angular Error vs. Mechanical Angle After Offset Correction
Figure 8. Supply Current vs. Supply Voltage
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Data Sheet
ADA4570
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 12. Phase Error vs. Mechanical RPM
Figure 9. VTEMP Output Voltage vs. Temperature
Figure 13. Frequency Response
Figure 10. Amplitude Synchronism Histogram
Figure 11. Differential Output Peak-to-Peak vs. Temperature
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Data Sheet
TERMINOLOGY
Output Signals
ADA4570
The output signals, VSIN+, VSIN−, VCOS+, and VCOS−, of the
ADA4570 are biased around a common-mode voltage of VDD/2 as
shown in Figure 14.
Figure 16. Sensor Alignment in Package
Uncorrected Angular Error
The uncorrected angular error is defined as the maximum deviation
from an ideal angle without any calibration applied to the VSIN and
VCOS differential signals.
Single Point Calibration Angular Error
The single point calibration angular error is defined as the deviation
from an ideal angle after the offset calibration is applied to the VSIN
and VCOS differential signals at 25°C.
Dynamic Angular Error
The dynamic angular error is defined as the maximum deviation
from an ideal angle with the continuous offset and gain calibration
applied to the VSIN and VCOS differential signals.
Figure 14. Single-Ended Output Voltage Range
The differential signal outputs, VSIN and VCOS, shown in Figure 15
are generated by sampling the corresponding positive and negative
SIN and COS single-ended outputs.
Output Amplitude Synchronism
The output amplitude synchronism (k) is defined as the ratio be-
tween the differential amplitudes of both channels when under
a continuously rotating magnetic field. To calculate the amplitude
synchronism, use the following equations:
k = 100% × VAMP(VSIN)/VAMP(VCOS)
Propagation Delay
The propagation delay is the amount of time taken for the signal
to propagate to the VSIN and VCOS differential signal outputs in
response to a magnetic stimulus change.
Phase Error
The phase error is defined as the average of the phase shift in
the sine and cosine signal through the amplifier. The phase error in-
creases with the rotation frequency due to the bandwidth limitation
of the instrumentation amplifiers. As shown in Figure 12, the typical
characteristics value can be used as a first-order compensation for
the phase error.
Figure 15. Differential Output Voltage Range
Orthogonality Error
Reference Position Error
The orthogonality error is the internal phase error caused by mis-
alignment of the sine and cosine sensor elements on-chip, with
respect to the ideal 90° sine to cosine phase.
The reference position error is the deviation of the sensing element
center from the nominal position shown in Figure 22.
Reference Angle Error
Single-Ended Output Voltage Low
The reference angle error, indicated in Figure 16, is the absolute
mounting angle error of the sensor from its nominal placement. The
angle Φ = 0° is referred to the straight line between the top of Pin 2
and Pin 7.
The single-ended output voltage low is the maximum voltage level
at the VSIN+, VSIN−, VCOS+, and VCOS− outputs when a broken
bond wire is detected and all outputs are pulled low, see Figure 14.
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Data Sheet
ADA4570
THEORY OF OPERATION
As shown in the Figure 1, the ADA4570 contains all the necessary
peripherals for AMR angle sensing of a magnetic field in the x-y
plane of the sensor.
a broken bond wire is detected, the VSIN and VCOS differential
signal outputs are forced low.
Electromagnetic interference (EMI) filters are implemented at the
AMR sensor outputs to prevent unwanted noise and interference
from appearing in the signal band of the input to the instrumentation
amplifier.
The bridge driver provides the voltage supply to the AMR sensor.
The sensitivity of AMR sensor is temperature dependent, and the
bridge driver is designed to provide a supply voltage that compen-
sates for the temperature dependence (see Figure 17).
The architecture of the instrumentation amplifier consists of pre-
cision, low noise, zero drift amplifiers that feature a proprietary
chopping technique. This chopping technique offers a low input
offset voltage as well as a low input offset voltage drift. The zero
drift design also features chopping ripple suppression circuitry that
removes glitches and other artifacts caused by chopping.
Offset voltage errors caused by common-mode voltage swings
and power supply variations are also corrected by the chopping
technique, resulting in a very high dc common-mode rejection ratio.
The amplifiers feature a low broadband noise of 33 nV/√Hz and
no 1/f noise component. These features are ideal for amplification
of the low level AMR bridge signals for high precision sensing
applications.
Figure 17. Temperature Compensated Bridge Driver
The ADA4570 consists of two dies that are connected internally by
bond wires, the AMR sensor and an application specific IC (ASIC)
that incorporates the electronics required to condition the output
signals. A broken bond wire detection system was implemented
in the ASIC that detects if any of the bond wires between the
AMR bridge and ASIC become detached or broken. Note that when
The differential amplifier outputs, VSIN and VCOS, are capable
of driving the inputs of an external ADC without requiring any
additional signal conditioning, as shown in Figure 18.
Figure 18. Typical Application Diagram
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Data Sheet
ADA4570
APPLICATIONS INFORMATION
The ADA4570 is designed for magnetoresistive sensing applica-
tions with a differential analog output. The sensor is designed to
operate with an external ADC that is controlled by a separate
processing IC or electronic control unit (ECU) as indicated in
Figure 18.
SUPPLY AND ADC REFERENCE
Figure 19. Direction of Homogeneous Magnetic Field for α = 0°
Connect a decoupling capacitance of 100 nF to the ADA4570 VDD
supply pin to minimize interferences on the power supply from
entering the system. To achieve optimum power supply related
noise performance, connect the VDD supply of the ADA4570 as
the voltage reference of the ADC, as shown in Figure 18. Using
the ADA4570 VDD supply as the reference input voltage to the
external ADC provides a ratiometric configuration where the output
dependency on the supply voltage changes is minimized. This con-
figuration also optimizes the use of the ADC input range because
the output voltages of the VSIN+, VSIN−, VCOS+, and VCOS− pins
track the supply voltage.
SIGNAL DEPENDENCE ON AIR GAP
DISTANCE
The ADA4570 measures the direction of the external magnetic field
within the sensor x-y plane.
Within a homogeneous field in the xy direction, where the magnetic
flux density is at least 30 mT, the accuracy and voltage levels of the
angular measurement is independent of the field strength and the
sensor placement in z direction (air gap).
The nominal z distance of the internal x-y plane to the top surface
of the plastic package is shown in Figure 22.
CONNECTING THE ADA4570
A typical circuit to connect the ADA4570 to a differential ADC
is shown in Figure 18. The ADA4570 signal driving capability is
sufficient to connect the analog outputs directly to a differential
successive approximation register (SAR) or a Σ-Δ ADC.
SIGNAL OFFSET AND CALIBRATION
The ADA4570 provides two differential output signals, VSIN and
VCOS, with an output voltage range of ±VAMP (see Figure 15).
Matching inaccuracies and other imperfections during the produc-
tion process may result in offsets in the outputs. To minimize
additional offsets, caused by the external filter components, match
the external capacitive and resistive loads to each other by using
the same nominal values for the external components connected to
VSIN+, VSIN−, VCOS+, and VCOS−.
Minimize the signal trace lengths to the ADC or the processing
IC. Using proper layout techniques and ground planes around
the analog signal tracks provides shielding on the PCB and im-
proves electromagnetic compatibility (EMC) robustness. For each
differential output, the load resistor (RL) and the single-ended load
capacitance (CL/2) must refer to ground, and the differential load
capacitance (CL/4) must be connected between the differential
outputs (see Figure 18.). The load resistors and capacitors must
match to achieve the best angular accuracy. In addition, take the
desired system sampling frequency into account when adding noise
reducing filters to the front of the ADC.
To calculate the offset, use the positive and negative VAMP value of
a full magnetic rotation as follows:
VOFFSET = (VAMP_POS + VAMP_NEG)/2
The VSIN and VCOS output offset can be removed by subtracting
the calculated offsets VOFFSET(VSIN)and VOFFSET(VCOS) from the
VSIN and VCOS measurement result.
ANGLE CALCULATION
The angle of the incident magnetic field is calculated from the out-
put of the ADA4570, and the trigonometric function arctangent(2)
(arctan2) is used. To calculate the ADA4570 output angle, use the
following equation:
A single point calibration is usually done at 25°C and removes
the system offset at this temperature. This simple calibration does
not take temperature related offset drifts into account that may be
caused by drifts within the internal or external components. This
calibration may be sufficient for many applications in particular
where no large changes in temperature are expected. To compen-
sate for offset drifts over the full temperature range, dynamic offset
calibrations are required.
α = arctan2(VSIN/VCOS)/2
With the sensing range of the AMR sensor, the calculated angle
repeats every 180° rotation of the magnetic field. For a dipole
magnet, the ADA4570 reports an angle with twice the frequency of
the rotation.
The direction of a homogeneous magnetic field for an angle of α =
0°is shown in Figure 19
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Data Sheet
ADA4570
APPLICATIONS INFORMATION
VTEMP OUTPUT PIN
An internal temperature sensor provides a voltage output at the
VTEMP pin that can be used to monitor the operating temperature
of the system and provide the reference for calibration. This output
voltage (VTEMP) is ratiometric to the ADA4570 supply voltage.
Using an ADC, the reference of which is supplied by the VDD of the
ADA4570, ensures that the digitized temperature measurement is
also ratiometric.
To achieve maximum accuracy from the VTEMP output voltage,
perform an initial calibration at a known and controlled temperature.
To calculate the temperature, use the following equation:
Figure 20. Short-Circuit Diagnostic Band
Short-Circuit Diagnostic Bands
V
− V
TEMP
V
CAL
− T
CAL
× T
CO
The output levels of the ADA4570 were designed to be within the
linear region shown in Figure 20 during normal operation. Validate
that the output levels are within the appropriate operating band. If
any, or all, of the VSIN+, VSIN−, VCOS+, and VCOS− outputs are
in the diagnostic bands, the outputs must be treated at the system
level because this is an indication of a potential fault.
(1)
DD
TVTEMP
=
T
CO
where:
TVTEMP is the calculated temperature (°C) from the VTEMP output
voltage.
VTEMP is the VTEMP output voltage during operation.
Radius Calculation
VCAL is the VTEMP output voltage during calibration at a controlled
temperature.
The differential signal outputs, VSIN and VCOS, from the ADA4570
can be used to calculate a radius (VRAD) of the circle at any angle
of the applied magnetic field, as is shown in Figure 21.
TCAL is the controlled temperature during calibration.
TCO is the temperature coefficient of the internal circuit. See the
Specifications section for the exact value.
VDD is the supply voltage.
In Figure 18, an optional resistor is shown in the VTEMP signal
path to the ADC. When operating in a harsh environment, this
resistor increases device immunity to EMI.
POWER CONSUMPTION
The power consumption is dependent on the supply voltage and
temperature as shown in Figure 8.
The analog outputs are protected against short circuit to the VDD
pin or ground by a current limitation.
Figure 21. Radius Values
DIAGNOSTIC
VRAD is equal to the vector sum of the differential signal outputs,
VSIN and VCOS.
Broken Bond Wire Detection
The ADA4570 includes the ability to detect broken bond wires
between the AMR sensor and the ASIC. When this circuitry detects
that the signal nodes are outside the normal operating region, the
device pulls the VSIN+, VSIN−, VCOS+, and VCOS− analog output
pins to ground. Monitor the voltage level of the analog signals
to verify that the output level does not fall within the short-circuit
diagnostic band shown in Figure 20. If the outputs fall within the
short-circuit diagnostic band shown in Figure 20, the user must take
the appropriate action.
VRAD
=
VSIN2 VCOS2
+
Due to the constant phase difference of 90° between the measure-
ments of the differential signal outputs, VSIN and VCOS, VRAD is
constant over an entire magnetic revolution for a constant tempera-
ture and supply.
It is important to perform an offset calibration before a radius
calculation is done.
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Rev. 0 | 12 of 14
Data Sheet
ADA4570
OUTLINE DIMENSIONS
Figure 22. 8-Lead Standard Small Outline Package [SOIC_N]
Narrow Body
(R-8)
Dimensions Shown in Millimeters
ORDERING GUIDE
Model1
Temperature Range
Package Description
Package Option
ADA4570BRZ
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +150°C
−40°C to +150°C
−40°C to +150°C
8-Lead Standard Small Outline Package [SOIC_N]
8-Lead Standard Small Outline Package [SOIC_N]
8-Lead Standard Small Outline Package [SOIC_N]
8-Lead Standard Small Outline Package [SOIC_N]
8-Lead Standard Small Outline Package [SOIC_N]
8-Lead Standard Small Outline Package [SOIC_N]
ADA4570 Evaluation Board
R-8
R-8
R-8
R-8
R-8
R-8
ADA4570BRZ-R7
ADA4570BRZ-RL
ADA4570WHRZ
ADA4570WHRZ-R7
ADA4570WHRZ-RL
EVAL-ADA4570SDZ
1
Z = RoHS-Compliant Part.
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Rev. 0 | 13 of 14
Data Sheet
ADA4570
OUTLINE DIMENSIONS
AUTOMOTIVE PRODUCTS
The ADA4570W models are available with controlled manufacturing to support the quality and reliability requirements of automotive
applications. Note that these automotive models may have specifications that differ from the commercial models; therefore, designers should
review the Specifications section of this data sheet carefully. Only the automotive grade products shown are available for use in automotive
applications. Contact your local Analog Devices account representative for specific product ordering information and to obtain the specific
Automotive Reliability reports for these models.
©2021 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
One Analog Way, Wilmington, MA 01887-2356, U.S.A.
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