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Home > Products > Integrated Circuits (ICs) > Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps > MAX9920ASA+
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MAX9920ASA+

In Stock 7047 pcs Reference Price(In US Dollars)
1+
$5.2983
Manufacturer Part Number:
MAX9920ASA+
Manufacturer / Brand
Analog Devices Inc./Maxim Integrated
Part of Description:
IC CURRENT SENSE 1 CIRCUIT 8SOIC
Datasheets:
MAX9920ASA+(1).pdfMAX9920ASA+(2).pdfMAX9920ASA+(3).pdfMAX9920ASA+(4).pdfMAX9920ASA+(5).pdfMAX9920ASA+(6).pdfMAX9920ASA+(7).pdf
Lead Free Status / RoHS Status:
ROHS3 Compliant
Stock Condition:
New original, 7047 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number MAX9920ASA+
Manufacturer / Brand Analog Devices Inc./Maxim Integrated
Stock Quantity 7047 pcs Stock
Category Integrated Circuits (ICs) > Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Description IC CURRENT SENSE 1 CIRCUIT 8SOIC
Lead Free Status / RoHS Status: ROHS3 Compliant
Voltage - Supply Span (Min) 4.5 V
Voltage - Supply Span (Max) 5.5 V
Voltage - Input Offset 480 µV
Supplier Device Package 8-SOIC-EP
Slew Rate 1.5V/µs
Series -
Package / Case 8-SOIC (0.154", 3.90mm Width) Exposed Pad
Package Tube
Output Type Rail-to-Rail
Operating Temperature -40°C ~ 125°C
Number of Circuits 1
Mounting Type Surface Mount
Current - Supply 1mA
Current - Output / Channel 44 mA
Current - Input Bias 175 µA
Base Product Number MAX9920
Amplifier Type Current Sense
-3db Bandwidth 230 kHz

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

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MAX9920ASA+ Product Details:

The MAX9920ASA+ is a precision current sense amplifier integrated circuit manufactured by Analog Devices/Maxim Integrated, designed specifically for accurate current monitoring applications in electronic systems. This single-circuit current sensing IC addresses the critical design challenge of measuring current flow with high precision while maintaining excellent common-mode rejection and minimal power consumption, making it ideal for battery-powered and power-sensitive applications.

This amplifier operates within a narrow supply voltage range of 4.5V to 5.5V, consuming only 1mA of supply current, which makes it exceptionally power-efficient for continuous monitoring applications. The device features rail-to-rail output capability with a maximum output current of 44mA per channel, ensuring compatibility with various downstream circuits and ADCs. The amplifier maintains a -3dB bandwidth of 230kHz with a slew rate of 1.5V/µs, providing adequate speed for most current sensing applications while filtering out high-frequency noise.

Key performance specifications include an input offset voltage of 480µV and input bias current of 175µA, delivering the precision required for accurate low-level current measurements. The device operates reliably across an extended temperature range from -40°C to 125°C, making it suitable for automotive, industrial, and harsh environment applications. The 8-SOIC-EP (Exposed Pad) package with 0.154" width provides excellent thermal performance and compact footprint for space-constrained designs, while the surface mount configuration facilitates automated assembly processes.

Primary advantages include exceptional accuracy in current measurement, low power consumption ideal for battery-operated systems, wide operating temperature range for harsh environments, and integrated protection features that enhance system reliability. The rail-to-rail output maximizes dynamic range utilization, while the single-supply operation simplifies power management design requirements.

The MAX9920ASA+ finds extensive application in battery management systems for monitoring charge and discharge currents, power supply current limiting and monitoring, motor control current feedback, LED driver current regulation, and portable device power management. It's particularly valuable in automotive electronics, industrial automation, telecommunications equipment, and consumer electronics where precise current monitoring is essential for system protection and optimization.

Regarding equivalent and alternative models, several comparable current sense amplifiers are available in the market. The Texas Instruments INA180 series offers similar functionality with various gain options and comparable performance specifications. The Linear Technology LTC6101 provides high-side current sensing with different package options. Analog Devices' own AD8210 and AD8211 serve as alternatives with slightly different specifications and package configurations. The Maxim MAX4080 series offers similar current sensing capabilities with different gain configurations. Other notable alternatives include the Texas Instruments INA219, which integrates ADC functionality, the ON Semiconductor NCS21911 for high-precision applications, and the Allegro ACS712 series for higher current applications. When selecting alternatives, designers should carefully compare parameters such as input offset voltage, bandwidth, supply voltage range, and package options to ensure optimal performance for their specific application requirements.

MAX9920ASA+ Image
MAX9920ASA+ (1)

MAX9920ASA+ Key Technical Attributes

Manufacturer: Analog Devices / Maxim Integrated

Part Number: MAX9920ASA+

Amplifier Type: Current Sense

MAX9920ASA+ Packing Size

The MAX9920ASA+ is provided in an 8-SOIC-EP (Small Outline Integrated Circuit with Exposed Pad) package, offering a compact footprint of 0.154" (3.90mm width) for efficient board utilization. The package ensures enhanced thermal dissipation via the exposed pad, and its standard 8-pin configuration allows seamless integration into most instrumentation designs. Delivered in tube format, this IC supports surface mount installation for automated PCB assembly.

MAX9920ASA+ Application

This device is optimized for precision current measurement in power control systems, battery monitoring, motor control, automotive modules, and industrial instrumentation. It operates reliably in harsh environments, supporting operating temperatures from -40°C to 125°C, which is ideal for both industrial and automotive use cases.

MAX9920ASA+ Features

The MAX9920ASA+ current sense amplifier integrates a single circuit with a rail-to-rail output, enabling accurate signal amplification over the entire supply voltage range. It features a supply voltage span from 4.5 V to 5.5 V and boasts a low supply current of just 1mA for power efficiency in continuous operation. Its -3dB bandwidth reaches 230 kHz, allowing for high-speed current signal detection. The amplifier provides a fast slew rate of 1.5V/s and high output drive capability with up to 44mA output per channel, suitable for driving downstream analog or digital inputs. Low input bias current (175nA) and a minimal input offset voltage of 480µV further contribute to precise current sensing, minimizing error in measurement systems.

MAX9920ASA+ Quality and Safety Features

This integrated circuit is manufactured in adherence to ROHS3 compliance standards, ensuring that it meets strict environmental and safety regulations. The exposed pad package enhances thermal management, contributing to improved device reliability and safe operation under elevated currents or temperatures.

MAX9920ASA+ Compatibility

The MAX9920ASA+ is compatible with a wide range of current sense applications that require surface mount instrumentation amplifiers with high accuracy. Its industry-standard 8-SOIC footprint enables interchangeability with similar parts, simplifying design upgrades and replacements in existing systems utilizing Maxim Integrated instrumentation amplifiers.

MAX9920ASA+ Datasheet PDF

IC-Components features the most comprehensive and up-to-date datasheet for the MAX9920ASA+ product model directly on our page. We highly recommend all customers download the official datasheet from our site to access the full technical specifications, recommended application notes, and reliable design guidelines for optimal integration.

Quality Distributor

IC-Components is a premium distributor of Analog Devices / Maxim Integrated products, offering unmatched service and product authenticity. We invite you to obtain a quote for the MAX9920ASA+ directly on our website to take advantage of our competitive pricing, quick turnaround times, and reliable stock availability.

Frequently Asked Questions

What are the key considerations when integrating the MAX9920ASA+ current sense IC into a high-current, high-temperature industrial application?
When integrating the MAX9920ASA+ into industrial applications operating up to 125°C, ensure that the device's operating temperature range (-40°C to 125°C) is respected and that proper PCB layout techniques are used to manage heat dissipation. Verify that the supply voltage (4.5 V to 5.5 V) is stable and free from noise, and confirm that the output current capability (44 mA) aligns with your load requirements. Additionally, consider the impact of the rail-to-rail output on your downstream circuitry, especially if precise linear measurements are critical.
How does the exposed pad (EP) in the 8-SOIC-EP package influence the PCB design and thermal management for the MAX9920ASA+?
The exposed pad (EP) in the 8-SOIC-EP package provides enhanced thermal conduction to the PCB, enabling better heat dissipation. When designing your PCB, ensure the pad is properly soldered to a ground plane to maximize thermal transfer and mechanical stability. Adequate copper area beneath the IC and appropriate via stitching around the pad will improve heat sinking, which is critical when operating at higher ambient temperatures or high-current conditions.
Can the MAX9920ASA+ be used effectively in battery-powered applications with limited supply voltage headroom?
Yes, the MAX9920ASA+ is suitable for battery-powered applications with supply voltages between 4.5 V and 5.5 V. Its rail-to-rail output and low supply current (approximately 1 mA) make it appropriate for power-sensitive designs. Ensure, however, that the input common-mode voltage and load conditions remain within specified limits for proper operation.
What design considerations are necessary to ensure accuracy when using the MAX9920ASA+ for precise current sensing in sensitive measurement systems?
For high-accuracy measurements, minimize input bias and offset voltages by implementing good PCB layout practices such as short, shielded signal paths and proper grounding. The MAX9920ASA+ has a low input bias current (175 nA) and input offset voltage (480 μV), but temperature variations can affect accuracy. Incorporate calibration routines and consider temperature compensation if necessary for your application.
How does the bandwidth of 230 kHz in the MAX9920ASA+ impact its suitability for dynamic current measurement in switching power supplies?
The 230 kHz bandwidth allows the MAX9920ASA+ to effectively track changing current levels in switching power supplies, enabling accurate measurement of fast transients. Ensure that the system's switching frequency and transient characteristics fall within this bandwidth for reliable sensing; otherwise, signal filtering or bandwidth adjustment may be required.
What are the practical trade-offs when selecting the MAX9920ASA+ versus other current sense amplifiers with higher bandwidth or different output types?
The MAX9920ASA+ offers a balanced combination of bandwidth, low power consumption, and rail-to-rail output, making it suitable for many applications. However, for extremely high-frequency switching or very high-precision needs, higher-bandwidth amplifiers may be necessary at the expense of increased power and cost. Conversely, if your design requires push-pull outputs or higher voltage swing, consider alternative models with appropriate output stages.
How critical is the supply voltage stability for the proper functioning of the MAX9920ASA+ in precision sensing applications?
The MAX9920ASA+ operates within a narrow supply voltage range (4.5 V to 5.5 V), and supply stability directly affects measurement accuracy and output linearity. Use low-noise, well-filtered power supplies and ensure proper decoupling to maintain optimal performance, especially in sensitive measurement systems.
When replacing the MAX9920ASA+ with a similar current sense amplifier, what design implications should be considered regarding package, thermal dissipation, and pin compatibility?
When substituting the MAX9920ASA+, verify that the replacement device has a compatible package (preferably 8-SOIC or similar), similar pinout, and comparable electrical characteristics. Consider their thermal ratings—if the replacement lacks an exposed pad, additional heatsinking may be necessary. Check whether the output voltage swing and bandwidth match your application's dynamic response requirements.
What long-term reliability factors should be considered for the MAX9920ASA+ in continuous industrial operation?
Ensure that the operating environment remains within the specified temperature range (-40°C to 125°C) and that the device is protected from voltage transients and surges. Use appropriate PCB layout and thermal management techniques to prevent overheating. Regular calibration may be required to compensate for drift over time, and adherence to RoHS3 standards ensures compliance with environmental regulations.
How does the input bias current of 175 nA in the MAX9920ASA+ affect high-impedance current sensing applications?
In high-impedance sensing scenarios, the input bias current can introduce measurement errors by creating a small voltage drop across the sensing resistor. To mitigate this, choose low-value sense resistors compatible with your measurement range and consider offset calibration. For applications demanding extreme precision, evaluate whether a device with even lower input bias current is necessary.

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MAX9920ASA+

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