Bidirectional, Zero Drift, Current Sense Amplifier AD8418A Data Sheet FEATURES GENERAL DESCRIPTION Typical 0.1 μV/°C offset drift Maximum ±400 μV voltage offset over full temperature range 2.7 V to 5.5 V power supply operating range Electromagnetic interference (EMI) filters included High common-mode input voltage range −2 V to +70 V continuous −4 V to +85 V survival Common-mode rejection ratio (CMRR): 86 dB, dc to 10 kHz Initial gain = 20 V/V Wide operating temperature range AD8418AWB: −40°C to +125°C AD8418AWH: −40°C to +150°C Bidirectional operation Available in 8-lead SOIC and 8-lead MSOP Qualified for automotive applications The AD8418A is a high voltage, high resolution current shunt amplifier. It features an initial gain of 20 V/V, with a maximum ±0.2% gain error over the entire temperature range. The buffered output voltage directly interfaces with any typical converter. The AD8418A offers excellent input common-mode rejection from −2 V to +70 V. The AD8418A performs bidirectional current measurements across a shunt resistor in a variety of automotive and industrial applications, including motor control, power management, and solenoid control. The AD8418A offers breakthrough performance throughout the −40°C to +150°C temperature range. It features a zero drift core, which leads to a typical offset drift of 0.1 μV/°C throughout the operating temperature range and the common-mode voltage range. The AD8418A is qualified for automotive applications. The device includes EMI filters and patented circuitry to enable output accuracy with pulse-width modulation (PWM) type input common-mode voltages. The typical input offset voltage is ±200 μV. The AD8418A is offered in 8-lead MSOP and SOIC packages. APPLICATIONS High-side current sensing in Motor controls Solenoid controls Power management Low-side current sensing Diagnostic protection Table 1. Related Devices Part No. AD8205 AD8206 AD8207 AD8210 AD8417 Description Current sense amplifier, gain = 50 Current sense amplifier, gain = 20 High accuracy current sense amplifier, gain = 20 High speed current sense amplifier, gain = 20 High accuracy current sense amplifier, gain = 60 FUNCTIONAL BLOCK DIAGRAM VCM = –2V TO +70V VS = 2.7V TO 5.5V 70V VS VREF 1 AD8418A VCM +IN ISHUNT EMI FILTER OUT G = 20 RSHUNT 50A VOUT + 0V –IN VS VS/2 EMI FILTER – ISHUNT –50A VREF 2 11883-001 0V GND Figure 1. Rev. A 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 ©2013–2014 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com AD8418A Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Unidirectional Operation .......................................................... 11 Applications ....................................................................................... 1 Bidirectional Operation............................................................. 11 General Description ......................................................................... 1 External Referenced Output ..................................................... 12 Functional Block Diagram .............................................................. 1 Splitting the Supply .................................................................... 12 Revision History ............................................................................... 2 Splitting an External Reference ................................................ 12 Specifications..................................................................................... 3 Applications Information .............................................................. 13 Absolute Maximum Ratings............................................................ 4 Motor Control............................................................................. 13 ESD Caution .................................................................................. 4 Solenoid Control ........................................................................ 14 Pin Configuration and Function Descriptions ............................. 5 Outline Dimensions ....................................................................... 15 Typical Performance Characteristics ............................................. 6 Ordering Guide .......................................................................... 16 Theory of Operation ...................................................................... 10 Automotive Products ................................................................. 16 Output Offset Adjustment ............................................................. 11 REVISION HISTORY 12/14—Rev. 0 to Rev. A Added AD8418AWH ......................................................... Universal Changes to Features Section and General Description Section........ 1 Changes to Specifications Section and Table 2 ............................. 3 Changes to Table 3 ............................................................................ 4 Changes to Ordering Guide .......................................................... 16 11/13—Revision 0: Initial Version Rev. A | Page 2 of 16 Data Sheet AD8418A SPECIFICATIONS TA = −40°C to +125°C (operating temperature range) for the AD8418AWB, TA = −40°C to +150°C for the AD8418AWH, VS = 5 V, unless otherwise noted. Table 2. Parameter GAIN Initial Error Over Temperature Gain vs. Temperature VOLTAGE OFFSET Offset Voltage, Referred to the Input, RTI Over Temperature, RTI Offset Drift INPUT Input Bias Current Input Voltage Range Common-Mode Rejection Ratio (CMRR) OUTPUT Output Voltage Range Output Resistance DYNAMIC RESPONSE Small Signal −3 dB Bandwidth Slew Rate NOISE 0.1 Hz to 10 Hz (RTI) Spectral Density, 1 kHz, RTI OFFSET ADJUSTMENT Ratiometric Accuracy1 Accuracy, Referred to the Output (RTO) Output Offset Adjustment Range POWER SUPPLY Operating Range Quiescent Current Over Temperature Power Supply Rejection Ratio Temperature Range For Specified Performance 1 Test Conditions/Comments Min Typ Max Unit ±0.2 +5 V/V % ppm/°C ±400 +0.4 µV µV µV/°C 20 Specified temperature range −5 25°C Specified temperature range ±200 −0.4 +0.1 130 Common mode, continuous Specified temperature range, f = dc f = dc to 10 kHz −2 90 RL = 25 kΩ 0.032 Divider to supplies Voltage applied to VREF1 and VREF2 in parallel VS = 5 V 0.4985 +70 100 86 VS − 0.032 2 V Ω 250 1 kHz V/µs 2.3 110 µV p-p nV/√Hz 0.032 0.5015 ±1 VS − 0.032 V/V mV/V V 2.7 5.5 V 4.1 4.2 mA mA dB +125 +150 °C °C VOUT = 0.1 V dc AD8418AWB AD8418AWH 80 Operating temperature range AD8418AWB AD8418AWH −40 −40 The offset adjustment is ratiometric to the power supply when VREF1 and VREF2 are used as a divider between the supplies. Rev. A | Page 3 of 16 µA V dB dB AD8418A Data Sheet ABSOLUTE MAXIMUM RATINGS Table 3. Parameter Supply Voltage Input Voltage Range Continuous Survival Differential Input Survival Reverse Supply Voltage ESD Human Body Model (HBM) Operating Temperature Range AD8418AWB AD8418AWH Storage Temperature Range Output Short-Circuit Duration Rating 6V −2 V to +70 V −4 V to +85 V ±5.5 V 0.3 V ±2000 V 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. ESD CAUTION −40°C to +125°C −40°C to +150°C −65°C to +150°C Indefinite Rev. A | Page 4 of 16 Data Sheet AD8418A PIN CONFIGURATION AND FUNCTION DESCRIPTIONS –IN 1 +IN AD8418A 7 VREF 1 VREF 2 3 TOP VIEW (Not to Scale) 6 VS 5 OUT NC 4 11883-002 8 GND 2 NC = NO CONNECT. DO NOT CONNECT TO THIS PIN. Figure 2. Pin Configuration Table 4. Pin Function Descriptions Pin No. 1 2 3 4 5 6 7 8 Mnemonic −IN GND VREF2 NC OUT VS VREF1 +IN Description Negative Input. Ground. Reference Input 2. No Connect. Do not connect to this pin. Output. Supply. Reference Input 1. Positive Input. Rev. A | Page 5 of 16 AD8418A Data Sheet 100 40 90 30 80 20 70 10 50 40 0 –10 –20 30 –30 20 –40 10 –50 0 –40 –25 –10 5 20 35 50 65 80 95 110 125 TEMPERATURE (°C) –60 1k 10k 1M 100k 10M FREQUENCY (Hz) Figure 3. Typical Offset Drift vs. Temperature 11883-006 GAIN (dB) 60 11883-003 OFFSET VOLTAGE (µV) TYPICAL PERFORMANCE CHARACTERISTICS Figure 6. Typical Small Signal Bandwidth (VOUT = 200 mV p-p) 110 20 18 100 TOTAL OUTPUT ERROR (%) 16 CMRR (dB) 90 80 70 14 12 10 8 6 4 2 60 10k 1k 1M 100k FREQUENCY (Hz) 11883-004 100 –2 0 15 20 25 30 35 40 Figure 7. Total Output Error vs. Differential Input Voltage 400 0.5 VS = 5V NORMALIZED AT 25°C 0.4 BIAS CURRENT PER INPUT PIN (mA) 300 200 100 0 –100 –200 –300 0.3 0.2 +IN 0.1 –IN 0 –0.1 –0.2 –0.3 –25 –10 5 20 35 50 65 80 95 TEMPERATURE (°C) 110 125 Figure 5. Typical Gain Error vs. Temperature –0.5 –4 0 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64 68 VCM (V) 11883-108 –0.4 11883-005 GAIN ERROR (µV/V) 10 DIFFERENTIAL INPUT VOLTAGE (mV) Figure 4. Typical CMRR vs. Frequency –400 –40 5 11883-007 0 50 10 Figure 8. Bias Current per Input Pin vs. Common-Mode Voltage (VCM) Rev. A | Page 6 of 16 Data Sheet AD8418A 4.5 25mV/DIV 3.5 INPUT 3.0 VS = 5V 2.5 500mV/DIV VS = 2.7V 2.0 OUTPUT 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 INPUT COMMON-MODE VOLTAGE (V) VS = 2.7V 11883-009 1.0 –5 TIME (1µs/DIV) Figure 9. Supply Current vs. Input Common-Mode Voltage 11883-012 1.5 Figure 12. Fall Time (VS = 2.7 V) 50mV/DIV INPUT INPUT 25mV/DIV 1V/DIV OUTPUT VS = 5V 11883-010 VS = 2.7V TIME (1µs/DIV) TIME (1µs/DIV) 11883-013 OUTPUT 500mV/DIV Figure 13. Fall Time (VS = 5 V) Figure 10. Rise Time (VS = 2.7 V) INPUT INPUT 100mV/DIV OUTPUT 50mV/DIV OUTPUT 1V/DIV VS = 5V TIME (1µs/DIV) VS = 2.7V TIME (1µs/DIV) 11883-014 1V/DIV 11883-011 SUPPLY CURRENT (mA) 4.0 Figure 14. Differential Overload Recovery, Rising (VS = 2.7 V) Figure 11. Rise Time (VS = 5 V) Rev. A | Page 7 of 16 AD8418A Data Sheet INPUT 200mV/DIV 100mV/DIV OUTPUT OUTPUT 40V/DIV 2V/DIV Figure 15. Differential Overload Recovery, Rising (VS = 5 V) 11883-018 TIME (4µs/DIV) Figure 18. Input Common-Mode Step Response (VS = 5 V, Inputs Shorted) MAXIMUM OUTPUT SINK CURRENT (mA) 45 100mV/DIV INPUT 1V/DIV OUTPUT TIME (1µs/DIV) 35 30 25 20 15 10 5 0 –40 11883-016 VS = 2.7V 2.7V 5V 40 –25 –10 5 20 35 50 65 80 95 110 125 TEMPERATURE (°C) Figure 16. Differential Overload Recovery, Falling (VS = 2.7 V) 11883-019 VS = 5V TIME (1µs/DIV) 11883-015 INPUT COMMON MODE Figure 19. Maximum Output Sink Current vs. Temperature 200mV/DIV INPUT 2V/DIV OUTPUT TIME (1µs/DIV) 30 5V 25 2.7V 20 15 10 5 0 –40 11883-017 VS = 5V 35 –25 –10 5 20 35 50 65 80 95 110 125 TEMPERATURE (°C) Figure 17. Differential Overload Recovery, Falling (VS = 5 V) Figure 20. Maximum Output Source Current vs. Temperature Rev. A | Page 8 of 16 11883-020 MAXIMUM OUTPUT SOURCE CURRENT (mA) 40 Data Sheet AD8418A 0 0.5 –50 0.4 –100 0.3 –150 0.2 CMRR (µV/V) –200 –250 –300 0.1 0 –350 –0.2 –400 –0.3 –450 –0.4 0 2 1 3 4 5 6 7 8 9 10 OUTPUT SOURCE CURRENT (mA) –0.5 –40 –25 1500 200 1200 HITS 250 600 50 300 2 1 3 4 5 6 7 8 9 10 OUTPUT SINK CURRENT (mA) Figure 22. Output Voltage Range from Ground vs. Output Sink Current 1600 –40°C +25°C +125°C VS = 5.0V 1400 1000 800 600 400 200 0 –400 –300 –200 –100 0 100 200 VOS (µV) 300 400 11883-325 HITS 1200 Figure 23. Offset Voltage Distribution Rev. A | Page 9 of 16 35 50 80 65 95 110 125 900 100 11883-022 OUTPUT VOLTAGE RANGE FROM GROUND (mV) 1800 0 20 Figure 24. CMRR vs. Temperature 300 0 5 TEMPERATURE (°C) Figure 21. Output Voltage Range from Positive Rail vs. Output Source Current 150 –10 0 –3 –2 –1 0 GAIN ERROR DRIFT (ppm/°C) Figure 25. Gain Error Drift Distribution 1 11883-023 –500 11883-024 –0.1 11883-021 OUTPUT VOLTAGE RANGE FROM POSITIVE RAIL (mV) NORMALIZED AT 25°C AD8418A Data Sheet THEORY OF OPERATION The reference inputs, VREF1 and VREF2, are tied through 100 kΩ resistors to the positive input of the main amplifier, which allows the output offset to be adjusted anywhere in the output operating range. The gain is 1 V/V from the reference pins to the output when the reference pins are used in parallel. When the pins are used to divide the supply, the gain is 0.5 V/V. The AD8418A is a single-supply, zero drift, difference amplifier that uses a unique architecture to accurately amplify small differential current shunt voltages in the presence of rapidly changing common-mode voltages. In typical applications, the AD8418A measures current by amplifying the voltage across a shunt resistor connected to its inputs by a gain of 20 V/V (see Figure 26). The AD8418A offers breakthrough performance without compromising any of the robust application needs typical of solenoid or motor control. The ability to reject PWM input common-mode voltages and the zero drift architecture providing low offset and offset drift allows the AD8418A to deliver total accuracy for these demanding applications. The AD8418A design provides excellent common-mode rejection, even with PWM common-mode inputs that can change at very fast rates, for example, 1 V/ns. The AD8418A contains proprietary technology to eliminate the negative effects of such fast changing external common-mode variations. The AD8418A features an input offset drift of less than 400 nV/°C. This performance is achieved through a novel zero drift architecture that does not compromise bandwidth, which is typically rated at 250 kHz. VCM = –2V TO +70V VS = 2.7V TO 5.5V 70V VS VREF 1 AD8418A VCM +IN ISHUNT EMI FILTER OUT G = 20 RSHUNT 50A VOUT + 0V –IN VS VS/2 EMI FILTER – ISHUNT VREF 2 –50A Figure 26. Typical Application Rev. A | Page 10 of 16 11883-225 0V GND Data Sheet AD8418A The output of the AD8418A can be adjusted for unidirectional or bidirectional operation. UNIDIRECTIONAL OPERATION Unidirectional operation allows the AD8418A to measure currents through a resistive shunt in one direction. The basic modes for unidirectional operation are ground referenced output mode and VS referenced output mode. VS Referenced Output Mode VS referenced output mode is set when both reference pins are tied to the positive supply. It is typically used when the diagnostic scheme requires detection of the amplifier and the wiring before power is applied to the load (see Figure 28). VS For unidirectional operation, the output can be set at the negative rail (near ground) or at the positive rail (near VS) when the differential input is 0 V. The output moves to the opposite rail when a correct polarity differential input voltage is applied. The required polarity of the differential input depends on the output voltage setting. If the output is set at the positive rail, the input polarity needs to be negative to decrease the output. If the output is set at ground, the polarity must be positive to increase the output. AD8418A R4 –IN VS R2 VREF 1 R3 VREF 2 Figure 28. VS Referenced Output BIDIRECTIONAL OPERATION Bidirectional operation allows the AD8418A to measure currents through a resistive shunt in two directions. In this case, the output is set anywhere within the output range. Typically, it is set at half-scale for equal range in both directions. In some cases, however, it is set at a voltage other than half-scale when the bidirectional current is nonsymmetrical. AD8418A R4 – OUT Adjusting the output is accomplished by applying voltage(s) to the referenced inputs. VREF1 and VREF2 are tied to internal resistors that connect to an internal offset node. There is no operational difference between the pins. + +IN OUT + GND When using the AD8418A in ground referenced output mode, both referenced inputs are tied to ground, which causes the output to sit at the negative rail when there are zero differential volts at the input (see Figure 27). R1 – +IN Ground Referenced Output Mode –IN R1 11883-026 OUTPUT OFFSET ADJUSTMENT R2 VREF 1 R3 VREF 2 11883-025 GND Figure 27. Ground Referenced Output Rev. A | Page 11 of 16 AD8418A Data Sheet VS EXTERNAL REFERENCED OUTPUT Tying VREF1 and VREF2 together and to a reference produces an output equal to the reference voltage when there is no differential input (see Figure 29). The output decreases the reference voltage when the input is negative, relative to the −IN pin, and increases the voltage when the input is positive, relative to the −IN pin. AD8418A R4 –IN R1 – + +IN VS OUT R2 VREF 1 R3 VREF 2 R4 –IN R1 GND – OUT Figure 30. Split Supply + +IN 11883-028 AD8418A R2 SPLITTING AN EXTERNAL REFERENCE VREF 1 R3 VREF 2 GND 11883-027 2.5V Figure 29. External Referenced Output Use the internal reference resistors to divide an external reference by 2 with an accuracy of approximately 0.5%. Split an external reference by connecting one VREFx pin to ground and the other VREFx pin to the reference (see Figure 31). VS SPLITTING THE SUPPLY AD8418A R4 –IN R1 – OUT + +IN Rev. A | Page 12 of 16 R2 VREF 1 R3 VREF 2 GND Figure 31. Split External Reference 5V 11883-029 By tying one reference pin to VS and the other to the ground pin, the output is set at half of the supply when there is no differential input (see Figure 30). The benefit of this configuration is that an external reference is not required to offset the output for bidirectional current measurement. Tying one reference pin to VS and the other to the ground pin creates a midscale offset that is ratiometric to the supply, which means that if the supply increases or decreases, the output remains at half the supply. For example, if the supply is 5.0 V, the output is at half scale or 2.5 V. If the supply increases by 10% (to 5.5 V), the output increases to 2.75 V. Data Sheet AD8418A APPLICATIONS INFORMATION MOTOR CONTROL 3-Phase Motor Control The AD8418A is ideally suited for monitoring current in 3-phase motor applications. The 250 kHz typical bandwidth of the AD8418A provides instantaneous current monitoring. Additionally, the typical low offset drift of 0.1 μV/°C means that the measurement error between the two motor phases is at a minimum over temperature. The AD8418A rejects PWM input common-mode voltages in the −2 V to +70 V (with a 5 V supply) range. Monitoring the current on the motor phase allows sampling of the current at any point and provides diagnostic information, such as a short to GND and battery. Refer to Figure 33 for the typical phase current measurement setup with the AD8418A. amp because ground is not typically a stable reference voltage in this type of application. The instability of the ground reference causes inaccuracies in the measurements that can be made with a simple ground referenced op amp. The AD8418A measures current in both directions as the H-bridge switches and the motor changes direction. The output of the AD8418A is configured in an external referenced bidirectional mode (see the Bidirectional Operation section). CONTROLLER 5V MOTOR VS +IN VREF 1 –IN GND VREF2 OUT AD8418A SHUNT NC 5V 2.5V 11883-030 H-Bridge Motor Control Another typical application for the AD8418A is to form part of the control loop in H-bridge motor control. In this case, place the shunt resistor in the middle of the H-bridge to accurately measure current in both directions by using the shunt available at the motor (see Figure 32). Using an amplifier and shunt in this location is a better solution than a ground referenced op Figure 32. H-Bridge Motor Control V+ M IU IV IW V– 5V OPTIONAL DEVICE FOR OVERCURRENT PROTECTION AND FAST (DIRECT) SHUTDOWN OF POWER STAGE INTERFACE CIRCUIT AD8418A 5V AD8418A CONTROLLER BIDIRECTIONAL CURRENT MEASUREMENT REJECTION OF HIGH PWM COMMON-MODE VOLTAGE (–2V TO +70V) AMPLIFICATION HIGH OUTPUT DRIVE Figure 33. 3-Phase Motor Control Rev. A | Page 13 of 16 11883-031 AD8214 AD8418A Data Sheet SOLENOID CONTROL OUT +IN VREF 2 GND 3 4 NC 2 1 In the high rail, current sensing configuration, the shunt resistor is referenced to the battery. High voltage is present at the inputs of the current sense amplifier. When the shunt is battery referenced, the AD8418A produces a linear ground referenced analog output. Additionally, the AD8214 provides an overcurrent detection signal in as little as 100 ns (see Figure 36). This feature is useful in high current systems where fast shutdown in overcurrent conditions is essential. OUTPUT 5 4 –IN NC 3 8 7 6 OVERCURRENT DETECTION (<100ns) OUTPUT 5 11883-032 VREF 2 2 1 INDUCTIVE LOAD High Rail Current Sensing AD8418A –IN SWITCH 5 Figure 35. High-Side Switch – SHUNT CLAMP DIODE OUT 6 6 AD8418A SHUNT NC GND 7 8 VS VREF 1 +IN INDUCTIVE LOAD GND BATTERY CLAMP DIODE 7 8 – NC = NO CONNECT. 5V + BATTERY OUTPUT 11883-033 In this circuit configuration, when the switch is closed, the common-mode voltage decreases to near the negative rail. When the switch is open, the voltage reversal across the inductive load causes the common-mode voltage to be held one diode drop above the battery by the clamp diode. + –IN In the case of a high-side current sense with a low-side switch, the PWM control switch is ground referenced. Tie an inductive load (solenoid) to a power supply and place a resistive shunt between the switch and the load (see Figure 34). An advantage of placing the shunt on the high side is that the entire current, including the recirculation current, is measurable because the shunt remains in the loop when the switch is off. In addition, diagnostics are enhanced because shorts to ground are detected with the shunt on the high side. VREF 1 SWITCH VS High-Side Current Sense with a Low-Side Switch OUT 5V NC = NO CONNECT. AD8214 Figure 34. Low-Side Switch High-Side Current Sense with a High-Side Switch 3 4 NC 2 VREG VS 1 +IN CLAMP DIODE SHUNT –IN GND VREF 2 Rev. A | Page 14 of 16 2 AD8418A 3 TOP VIEW (Not to Scale) NC 4 7 6 5 NC = NO CONNECT. + +IN INDUCTIVE LOAD VREF 1 VS OUT – 5V SWITCH 11883-034 When using a high-side switch, the battery voltage is connected to the load when the switch is closed, causing the common-mode voltage to increase to the battery voltage. In this case, when the switch is open, the voltage reversal across the inductive load causes the common-mode voltage to be held one diode drop below ground by the clamp diode. 8 1 BATTERY The high-side current sense with a high-side switch configuration minimizes the possibility of unexpected solenoid activation and excessive corrosion (see Figure 35). In this case, both the switch and the shunt are on the high side. When the switch is off, the battery is removed from the load, which prevents damage from potential shorts to ground while still allowing the recirculating current to be measured and to provide diagnostics. Removing the power supply from the load for the majority of the time that the switch is open minimizes the corrosive effects that can be caused by the differential voltage between the load and ground. Figure 36. High Rail Current Sensing Data Sheet AD8418A OUTLINE DIMENSIONS 5.00 (0.1968) 4.80 (0.1890) 8 4.00 (0.1574) 3.80 (0.1497) 5 1 4 1.27 (0.0500) BSC 0.25 (0.0098) 0.10 (0.0040) 6.20 (0.2441) 5.80 (0.2284) 1.75 (0.0688) 1.35 (0.0532) 0.51 (0.0201) 0.31 (0.0122) COPLANARITY 0.10 SEATING PLANE 0.50 (0.0196) 0.25 (0.0099) 45° 8° 0° 0.25 (0.0098) 0.17 (0.0067) 1.27 (0.0500) 0.40 (0.0157) 012407-A COMPLIANT TO JEDEC STANDARDS MS-012-AA CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. Figure 37. 8-Lead Standard Small Outline Package [SOIC_N] Narrow Body (R-8) Dimensions shown in millimeters and (inches) 3.20 3.00 2.80 8 3.20 3.00 2.80 1 5.15 4.90 4.65 5 4 PIN 1 IDENTIFIER 0.65 BSC 0.95 0.85 0.75 15° MAX 1.10 MAX 0.40 0.25 6° 0° 0.23 0.09 COMPLIANT TO JEDEC STANDARDS MO-187-AA Figure 38. 8-Lead Mini Small Outline Package [MSOP] (RM-8) Dimensions shown in millimeters Rev. A | Page 15 of 16 0.80 0.55 0.40 10-07-2009-B 0.15 0.05 COPLANARITY 0.10 AD8418A Data Sheet ORDERING GUIDE Model1, 2 AD8418ABRMZ AD8418ABRMZ-RL AD8418AWBRMZ AD8418AWBRMZ-RL AD8418AWBRZ AD8418AWBRZ-RL AD8418AWHRZ AD8418AWHRZ-RL AD8418AWHRMZ AD8418AWHRMZ-RL AD8418AR-EVALZ AD8418ARM-EVALZ 1 2 Temperature Range −40°C to +125°C −40°C to +125°C −40°C to +125°C −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 −40°C to +150°C Package Description 8-Lead MSOP 8-Lead MSOP, 13” Tape and Reel 8-Lead MSOP 8-Lead MSOP, 13” Tape and Reel 8-Lead SOIC_N 8-Lead SOIC_N, 13” Tape and Reel 8-Lead SOIC_N 8-Lead SOIC_N, 13” Tape and Reel 8-Lead MSOP 8-Lead MSOP, 13” Tape and Reel 8-Lead SOIC_N Evaluation Board 8-Lead MSOP Evaluation Board Package Option RM-8 RM-8 RM-8 RM-8 R-8 R-8 R-8 R-8 RM-8 RM-8 Branding Y5J Y5J Y5G Y5G Y5H Y5H Z = RoHS Compliant Part. W = Qualified for Automotive Applications. AUTOMOTIVE PRODUCTS The AD8418AW 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. ©2013–2014 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D11883-0-12/14(A) Rev. A | Page 16 of 16