AD8215WYRZ

High Voltage, Current Shunt Monitor AD8215 Data Sheet FEATURES FUNCTIONAL BLOCK DIAGRAM IN+ ±4000 V human body model (HBM) ESD High common-mode voltage range −2 V to +65 V operating −3 V to +68 V survival Buffered output voltage Wide operating temperature range 8-Lead SOIC: −40°C to +125°C Excellent ac and dc performance 6 μV/°C typical offset drift −8 ppm/°C typical gain drift 120 dB typical CMRR at dc Qualified for automotive applications IN– V+ A1 PROPRIETARY OFFSET CIRCUITRY OUT AD8215 APPLICATIONS GND 07203-001 G = +20 Figure 1. High-side current sensing Motor controls Transmission controls Engine management Suspension controls Vehicle dynamic controls DC to dc converters GENERAL DESCRIPTION The AD8215 is a high voltage, precision current shunt monitor. It features a set gain of 20 V/V, with a maximum ±0.3% gain error over the entire temperature range. The buffered output voltage directly interfaces with any typical converter. Excellent common-mode rejection from −2 V to +65 V is independent of the 5 V supply. The AD8215 performs unidirectional current measurements across a shunt resistor in a variety of industrial and automotive applications, such as motor controls, solenoid controls, or battery management. Rev. B Special circuitry is devoted to output linearity being maintained throughout the input differential voltage range of 0 mV to 250 mV, regardless of the common-mode voltage present. The AD8215 has an operating temperature range of −40°C to +125°C and is offered in a small 8-lead SOIC package. Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. 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. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2008–2016 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com AD8215 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1  Application Notes ........................................................................... 11  Applications ....................................................................................... 1  Output Linearity ......................................................................... 11  Functional Block Diagram .............................................................. 1  Applications Information .............................................................. 12  General Description ......................................................................... 1  High-Side Current Sensing with a Low-Side Switch ............. 12  Revision History ............................................................................... 2  High-Side Current Sensing ....................................................... 12  Specifications..................................................................................... 3  Low-Side Current Sensing ........................................................ 12  Absolute Maximum Ratings............................................................ 4  Outline Dimensions ....................................................................... 13  ESD Caution .................................................................................. 4  Ordering Guide .......................................................................... 13  Pin Configuration and Function Descriptions ............................. 5  Automotive Products ................................................................. 13  Typical Performance Characteristics ............................................. 6  Theory of Operation ...................................................................... 10  REVISION HISTORY 12/2016—Rev. A to Rev. B Changes to Features Section and Applications Section ............... 1 Changes to Figure 30 ...................................................................... 12 10/2011—Rev. 0 to Rev. A Change to Applications Section ...................................................... 1 Updated Outline Dimensions ....................................................... 13 Changes to Ordering Guide .......................................................... 13 Added Automotive Products Section .......................................... 13 1/2008—Revision 0: Initial Version Rev. B | Page 2 of 13 Data Sheet AD8215 SPECIFICATIONS Operating temperature range (TOPR) = −40°C to +125°C, ambient temperature (TA) = 25°C, VS = 5 V, RL = 25 kΩ (RL is the output load resistor), unless otherwise noted. Table 1. Parameter GAIN Initial Accuracy Accuracy Over Temperature Drift VOLTAGE OFFSET Offset Voltage, Referred to Input (RTI) Over Temperature (RTI) Drift INPUT Input Impedance Differential Common Mode Common-Mode Input Voltage Range Differential Input Voltage Range Common-Mode Rejection Ratio Min Typ Max Unit Test Conditions/Comments −8 ±0.15 ±0.3 −15 V/V % % ppm/°C Output voltage (VO) ≥ 0.1 V dc, TA TOPR TOPR +6 ±1 ±2.5 +18 mV mV µV/°C TA TOPR TOPR +65 kΩ MΩ kΩ V mV dB dB Common-mode voltage > 5 V Common-mode voltage < 5 V Common-mode continuous Differential input voltage TOPR, f = dc to 50 kHz, VCM > 5 V TOPR, f = dc to 40 kHz, VCM < 5 V 20 0 −15 5 5 3.5 −2 100 80 OUTPUT Output Voltage Range Low 250 120 90 0.03 TA TOPR TA TOPR 2 V V V V Ω 450 4.5 kHz V/µs TOPR TA 7 70 µV p-p nV/√Hz 0.10 Output Voltage Range High 4.95 4.90 Output Impedance DYNAMIC RESPONSE Small Signal −3 dB Bandwidth Slew Rate NOISE 0.1 Hz to 10 Hz, RTI Spectral Density, 1 kHz, RTI POWER SUPPLY Operating Range Quiescent Current Over Temperature Power Supply Rejection Ratio TEMPERATURE RANGE For Specified Performance 1 4.5 1.3 5.5 2.2 V mA dB +125 °C 75 −40 VCM > 5 V 1, TOPR TOPR When the common-mode input voltage is less than 5 V, the supply current increases, which can be calculated by IS = −0.275 (VCM) + 2.5. Rev. B | Page 3 of 13 AD8215 Data Sheet ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Supply Voltage Continuous Input Voltage (Survival) Continuous Differential Input Voltage Reverse Supply Voltage ESD Rating HBM Charged Device Model (CDM) Operating Temperature Range Storage Temperature Range Output Short-Circuit Duration ESD CAUTION Rating 12.5 V −3 V to +68 V 0.5 V −0.3 V ±4000 V ±1000 V −40°C to +125°C −65°C to +150°C Indefinite 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 operating conditions for extended periods may affect product reliability. Rev. B | Page 4 of 13 Data Sheet AD8215 1 8 –IN 1 GND 2 NC 3 6 55 TOP VIEW NC 4 (Not to Scale) 07203-002 2 AD8215 8 +IN 7 NC 6 V+ 5 OUT NC = NO CONNECT Figure 2. Metallization Diagram 07203-003 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Figure 3. Pin Configuration Table 3. Pin Function Descriptions Pin No. 1 2 3, 4, 7 5 6 8 Mnemonic −IN GND NC OUT V+ +IN X −228 −273 Not applicable +265 +273 +229 Y +519 −251 Not applicable −466 −266 +519 Rev. B | Page 5 of 13 Description Inverting Input Ground No Connect Buffered Output Supply Noninverting Input AD8215 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS 1.2 40 1.0 35 30 0.8 25 0.6 20 15 0.4 GAIN (dB) VOSI (mV) 10 0.2 0 –0.2 5 0 –5 –0.4 –10 –15 –0.6 –20 –0.8 –25 –30 –1.0 0 20 40 60 80 100 120 TEMPERATURE (°C) –40 10k 07203-017 –20 1M 10M FREQUENCY (Hz) Figure 4. Typical Offset Drift (VOSI) vs. Temperature Figure 7. Typical Small Signal Bandwidth (VOUT = 200 mV p-p) 140 10 9 130 TOTAL OUTPUT ERROR (%) COMMON-MODE VOLTAGE >5V 120 CMRR (dB) 100k 07203-018 –35 –1.2 –40 110 COMMON-MODE VOLTAGE