MAX40056FAWA+ Analog Devices Integrated Circuit (BGA) In Stock
Analog Devices MAX40056FAWA+ is a bidirectional current sense amplifier with PWM-rejection using chopper-stabilized architecture. It offers 140dB nominal CMRR and 300µV maximum input offset voltage for precision measurement. Packaged in an 8-pin WLCSP BGA, it targets motor drive and power conversion applications.
- Manufacturer
- Analog Devices
- Package
- BGA
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MAX40056FAWA+ Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MAX40056FAWA+?
- Chopper-stabilized architecture delivers 140dB nominal CMRR and 300µV max input offset for ultra-precise bidirectional current sensing
- Integrated PWM-rejection filter eliminates switching noise interference from motor drives and DC-DC converters without external components
- Ultra-low 30µA bias current minimizes self-heating and power consumption in high-density power monitoring circuits
- 8-pin WLCSP package enables smallest possible PCB footprint for space-constrained motor control and wearable power designs
What is MAX40056FAWA+ used for?
The MAX40056FAWA+ is optimized for current sensing in PWM-driven motor controllers and switch-mode power supplies where switching noise would degrade conventional amplifier accuracy. Its high CMRR and PWM-rejection capability make it ideal for servo drives, robotics, and electric vehicle inverter feedback loops. It also fits precision battery coulomb counting systems and industrial load monitoring designs that demand low offset and high noise immunity.
What are the specifications of MAX40056FAWA+?
| Manufacturer Package Code | 8-WLCSP-N/A |
| Date Of Intro | 2019-01-16 |
| YTEOL | 9 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | CHOPPER-STAB |
| Average Bias Current-Max (IIB) | 30 µA |
| Common-mode Reject Ratio-Min | 100dB |
| Common-mode Reject Ratio-Nom | 140dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 300 µV |
| JESD-30 Code | R-PBGA-B8 |
| Low-Bias | NO |
| Low-Offset | NO |
| Micropower | NO |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | BGA8,2X4,20 |
| Package Shape | RECTANGULAR |
| Package Style | GRID ARRAY, VERY THIN PROFILE, FINE PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Screening Level | AEC-Q100 |
| Slew Rate-Nom | 1.5V/us |
| Supply Current-Max | 9mA |
| Supply Voltage Limit-Max | 70V |
| Supply Voltage-Nom (Vsup) | 3.3V |
| Surface Mount | YES |
| Terminal Finish | Tin/Silver/Copper/Nickel (Sn/Ag/Cu/Ni) |
| Terminal Form | BALL |
| Terminal Pitch | 0.5mm |
| Terminal Position | BOTTOM |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Wideband | NO |
| Package | BGA |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
| Country of Origin | Japan, Mainland China, Malaysia, Philippines, Singapore, South Korea, Taiwan, Thailand, USA |
Where can I find the MAX40056FAWA+ datasheet?
MAX40056FAWA+ Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for MAX40056FAWA+?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does PWM-rejection in MAX40056FAWA+ improve current measurement in motor control designs?
The MAX40056FAWA+ integrates a PWM-rejection filter that attenuates switching noise from PWM signals at frequencies up to hundreds of kHz, allowing the amplifier to measure true DC or low-frequency current components accurately. Without this feature, a standard amplifier would require large external RC filters, adding latency and board area in motor drive feedback loops.
What are the CMRR specifications of MAX40056FAWA+ and why do they matter for high-side sensing?
The MAX40056FAWA+ achieves a minimum CMRR of 100dB and nominal CMRR of 140dB. In high-side current sensing where the sense resistor sits on a rail of 12V, 24V, or 48V, this rejection ratio ensures the large common-mode voltage does not corrupt the small differential measurement signal, maintaining accuracy within 300µV of true current.
What is the package of MAX40056FAWA+ and what does the WLCSP format require for PCB assembly?
The MAX40056FAWA+ uses an 8-pin WLCSP (Wafer-Level Chip-Scale Package) BGA format, which has a very small ball pitch typically around 0.4mm. PCB assembly requires fine-pitch stencil printing and X-ray inspection for joint verification, but delivers the smallest possible footprint, critical for wearable sensors and compact power modules where every square millimeter matters.
How does the chopper-stabilized architecture of MAX40056FAWA+ maintain accuracy over temperature?
Chopper stabilization continuously modulates and demodulates the signal path to cancel DC offset and low-frequency 1/f noise, keeping input offset voltage below 300µV even across the full -40°C to +125°C operating range. This eliminates the need for periodic re-calibration in industrial and automotive current monitoring systems that must operate accurately over wide ambient temperature swings.
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Why Buy from FindMyChip
About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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