MAX9938FEUK+T Analog Devices Integrated Circuit (SOT23 (5-Pin)) In Stock
The MAX9938FEUK+T is a nanoPower precision current-sense amplifier with 130 dB typical CMRR and 600 µV maximum input offset voltage, available in a 5-pin SOT-23 package for ultra-compact current monitoring applications.
- Manufacturer
- Analog Devices
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- MAX9938FEUK+T Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3877(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MAX9938FEUK+T?
- 130 dB typical CMRR with 94 dB minimum for accurate common-mode rejection
- 600 µV maximum input offset voltage for precision current measurement
- nanoPower supply current consumption for battery-powered monitoring circuits
- Voltage-feedback architecture with internal frequency compensation
- 5-pin SOT-23 package enabling smallest possible PCB footprint
- Wide YTEOL of 10 years confirming long active lifecycle availability
What is MAX9938FEUK+T used for?
The MAX9938FEUK+T is used in battery management systems, portable power monitors, and energy-metering circuits where accurate low-side current sensing at nanoPower consumption is critical. Its extremely high CMRR and low offset voltage also make it effective for precision shunt-based current measurement in medical devices, wearables, and IoT sensor nodes.
What are the specifications of MAX9938FEUK+T?
| Manufacturer Package Code | 5-SOT_23-N/A |
| Date Of Intro | 2008-05-14 |
| YTEOL | 10 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Common-mode Reject Ratio-Min | 94dB |
| Common-mode Reject Ratio-Nom | 130dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 600 µV |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Low-Bias | NO |
| Low-Offset | YES |
| Micropower | YES |
| Neg Supply Voltage Limit-Max | -15 V |
| Neg Supply Voltage-Nom (Vsup) | -3.6 V |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Supply Current-Max | 0.0025mA |
| Supply Voltage Limit-Max | 30V |
| Supply Voltage-Nom (Vsup) | 3.6V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Gain-Min | 25 |
| Wideband | NO |
| Package | SOT23 (5-Pin) |
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 MAX9938FEUK+T datasheet?
MAX9938FEUK+T Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for MAX9938FEUK+T?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the CMRR of the MAX9938FEUK+T and how does it support accurate current sensing in high-common-mode environments?
The MAX9938FEUK+T achieves a 130 dB typical CMRR with a 94 dB minimum, which effectively suppresses common-mode noise from switching regulators or motor drivers sharing the same bus. This level of rejection allows precise measurement of milliamp-level currents even in noisy industrial and automotive power rails.
How precise is the MAX9938FEUK+T for shunt-based current measurement given its input offset voltage specification?
The MAX9938FEUK+T has a maximum input offset voltage of 600 µV, which translates to a small but measurable error across a low-value shunt resistor. For a 10 mΩ shunt carrying 1 A, the 600 µV offset represents a 60 mA equivalent error, so designers using sub-10 mΩ shunts should account for this in their accuracy budget.
For a coin-cell powered IoT sensor node, does the nanoPower designation of MAX9938FEUK+T make it viable over a standard current sense amplifier?
Yes. The nanoPower rating of the MAX9938FEUK+T means supply current consumption is in the low microamp range, making it far more suitable than standard 100 µA to 1 mA current-sense amplifiers for coin-cell or energy-harvesting IoT nodes where quiescent current directly limits battery life.
What is the package of MAX9938FEUK+T and does it support automated reel-based SMT assembly?
The MAX9938FEUK+T is supplied in a 5-pin SOT-23 package on tape-and-reel (T suffix), which is compatible with standard pick-and-place SMT assembly equipment. The compact SOT-23 footprint occupies minimal board space while supporting high-volume production runs with standard 8 mm reel formats.
Related Guides
TLV76033 Selection Guide: Headroom, Heat, and Sourcing
Choose a TLV76033 3.3-V supply using manufacturer ratings, load profiles, dropout calculations, thermal checks, and exact orderable parts.
Nov 14, 2026
DP83TG720SWRHATQ1 Automotive Ethernet Board Design Guide
A practical DP83TG720SWRHATQ1 board checklist for host interfaces, startup, channel validation, qualified variants, and sourcing.
Nov 14, 2026
BQ76942PFBR Battery Monitor Selection and Procurement Guide
Choose BQ76942PFBR by cell count, protection architecture, factory configuration, measurement needs, and a controlled sourcing specification.
Nov 13, 2026
SEP0640Q38CB Surge Protection Board Validation Guide
Validate a SEP0640Q38CB protection network through operating-envelope review, surge-current routing, recovery tests, and assembly checks.
Nov 13, 2026
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.
More from Analog Devices
LT3062EDCB#TRPBF
Small Outline No-lead
Integrated Circuit
LT3062EDCB#TRMPBF
Small Outline No-lead
Integrated Circuit
LT8641IUDC#TRPBF
Other
Integrated Circuit
HMC412AMS8GTR
Small Outline Packages
Integrated Circuit
LT3062HMS8E#PBF
Small Outline Packages
Integrated Circuit
LT3062IMS8E#PBF
Small Outline Packages
Integrated Circuit
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.4009 | $0.40 |
| 10+ | $0.3943 | $3.94 |
| 25+ | $0.3877 | $9.69 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit