Click here for production status of specific part numbers. MAX9918/MAX9919/MAX9920 -20V to +75V Input Range, Precision Uni-/Bidirectional, Current-Sense Amplifiers General Description Benefits and Features The MAX9918/MAX9919/MAX9920 are single-supply, Reduce Protective Clamping for High Inductive high-accuracy current-sense amplifiers with a high Kickback Voltage input common-mode range that extends from -20V -20V to +75V Input Common-Mode Voltage Range to +75V. These amplifiers are well suited for current Supports Wide Range of Precision AC and DC monitoring of inductive loads such as motors and Current Sensing Applications solenoids, where common-mode voltages can become Uni- or Bidirectional Current Sensing negative due to inductive kickback, reverse-battery 0.6% (max) Gain Accuracy Error conditions, or transient events. 400V (max) Input Offset Voltage 120kHz, -3dB Bandwidth (MAX9919N) The MAX9918/MAX9920 feature adjustable gain set Reference Input for Bidirectional OUT by an external resistive-divider network. The MAX9919 Rail-to-Rail Output features fixed gains of 45V/V (MAX9919F) and 90V/V (MAX9919N). The MAX9918/MAX9919/MAX9920 Saves Board Space operate as unidirectional amplifiers when V = GND 8-Pin SOIC Package REFIN Single-Supply Operation (4.5V to 5.5V) and as bidirectional amplifiers when V = V /2. REFIN CC The MAX9920 attenuates the input signal by a factor of AEC-Q100 Qualified (MAX9918ASA/V+, MAX9919FASA/V+, MAX9919NASA/V+, 4 at the input level-shifting stage allowing the device to sense voltages up to 200mV (unidirectional operation) or MAX9920ASA/V+ Only) 100mV (bidirectional operation). Ordering Information/Selector Guide The MAX9918/MAX9919/MAX9920 operate with a VSENSE GAIN PIN- single 5V supply voltage, are fully specified over the PART (mV) (V/V) PACKAGE -40C to +125C automotive temperature range, and are MAX9918ASA+ 50 Adjustable 8 SO-EP* available in an 8-pin SOIC package. MAX9918ASA/V+ 50 Adjustable 8 SO-EP* Applications MAX9919FASA+ 50 45 8 SO-EP* MAX9919FASA/V+ 50 45 8 SO-EP* H-Bridge Motor Current Sensing Solenoid Current Sensing MAX9919NASA+ 50 90 8 SO-EP* Current Monitoring of Inductive Loads MAX9919NASA/V+ 50 90 8 SO-EP* High- and Low-Side Precision Current Sensing MAX9920ASA+ 200 Adjustable 8 SO-EP* Super-Capacitor Charge/Discharge Monitoring MAX9920ASA/V+ 200 Adjustable 8 SO-EP* Precision High-Voltage Current Monitoring Note: All devices operate over the -40C to +125C temperature range. Automotive +Denotes a lead(Pb)-free/RoHS-compliant package. /V denotes an automotive qualified part. *EP = Exposed pad. Typical Operating Circuit V V CC CC V BATT MAX9918 OUT 1A 2B A ADC MAX9920 R SENSE R2 M FB RS+ INPUT STAGE R1 LEVEL SHIFTER RS- REFIN REF ADJUSTABLE GAIN C 1B 2B SHDN GND GND 19-5015 Rev 10 7/19MAX9918/MAX9919/MAX9920 -20V to +75V Input Range, Precision Uni-/Bidirectional, Current-Sense Amplifiers Absolute Maximum Ratings V to GND ............................................................-0.3V to +6V Output Short Circuit to V or GND .........................Continuous CC CC RS+, RS- to GND (V = 5V) ................................-30V to +80V Continuous Current into Any Pin CC RS+, RS- to GND (V = 0V) ...........-15V to +80V (15 minutes) (Not to exceed package power dissipation) .................20mA CC Differential Input Voltage (V - V ) Continuous Power Dissipation (T = +70C) RS+ RS- A (MAX9918/MAX9919) ................................15V (Continuous) 8-Pin SO-EP (derate 24.4mW/C above +70C) .. 1951.2mW** Differential Input Voltage Junction Temperature ......................................................+150C (V - V ) (MAX9920) ...........................5V (Continuous) Storage Temperature Range ............................ -65C to +150C RS+ RS- REFIN, FB, OUT to GND ......................... -0.3V to (V + 0.3V) Lead Temperature (soldering, 10s) .................................+300C CC SHDN to GND .......................................................-0.3V to +20V Soldering Temperature (reflow) .......................................+260C **As per JEDEC51 Standard (multilayer board). Package Thermal Characteristics (Note 1) SO-EP Junction-to-Ambient Thermal Resistance ( ) ..........41C/W JA Junction-to-Case Thermal Resistance ( ) .................7C/W JC Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Package Information 8 SO-EP PACKAGE CODE S8E+14 Outline Number 21-0111 Land Pattern Number 90-0151 Thermal Resistance, Single-Layer Board: Junction to Ambient ( ) 52C/W JA Junction to Case ( ) 6C/W JC Thermal Resistance, Four-Layer Board: Junction to Ambient ( ) 41C/W JA Junction to Case ( ) 7C/W JC For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a +, , or - in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Maxim Integrated 2 www.maximintegrated.com