My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX44284EAUT+T
- Part No.:
- MAX44284EAUT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
MAX44284EAUT+T.pdf
- Description:
- IC CURRENT SENSE 1 CIRCUIT SOT6
- Quantity:
- Payment:
- Shipping:
Inventory:8,723
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX44284EAUT+T from Analog Devices is a high-side current-sense amplifier with 500V/V fixed gain, -0.1V to +36V input common-mode range, 21µA quiescent current, ±15µV (typ) input offset voltage at +25°C, and 0.05% gain error - designed for precision DC-DC current monitoring in battery-powered systems.
For engineers reviewing the MAX44284EAUT+T datasheet, MAX44284EAUT+T pinout, MAX44284EAUT+T application, or MAX44284EAUT+T equivalent, this page delivers verified specifications, automotive-grade thermal performance (-40°C to +125°C), SOT23-6 package mapping, and real-world selection guidance for low-power, high-accuracy current sensing.
Technical Context
The MAX44284EAUT+T implements a capacitive-coupled chopper instrumentation amplifier (CCIA) architecture to achieve ultra-low offset drift (50nV/°C) and maintain precision across its full -40°C to +125°C operating range. Its input stage operates independently of VDD, enabling true high-side sensing up to +36V while referenced to ground.
This variant features fixed 500V/V gain, 0.4kHz small-signal bandwidth, and active-low shutdown (SHDN) that reduces supply current to ≤0.8µA. It supports Kelvin-sense PCB layouts and tolerates input differential voltages up to ±40V, making it suitable for fault-tolerant power rail monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 500V/V - scales 3.4mV–11mV sense voltage to full-scale output for 1.7V–5.5V supplies. |
| Input Offset Voltage (25°C) | ±15 µV - enables accurate measurement with ≤10mΩ sense resistors at 1A load. |
| Gain Error (25°C) | 0.05% - ensures <±0.55mV absolute error on 1.1V output, critical for ADC interface accuracy. |
| Supply Current | 21 µA - extends battery life in portable medical devices and smartphones without sacrificing precision. |
| Common-Mode Range | -0.1V to +36V - supports high-side sensing on 24V industrial rails and negative transient detection. |
| Shutdown Current | ≤0.8 µA - allows system-level power gating while preserving fast wake-up (<1500µs settling). |
| Bandwidth | 0.4 kHz - sufficient for DC-DC converter current loop monitoring and battery charge/discharge profiling. |
Pinout & Package
MAX44284EAUT+T is housed in a 6-pin SOT23 package (package code U6+1), footprint-compatible with JEDEC MO-178AA, with 0.95mm pitch and 2.9mm × 1.6mm body size. Thermal resistance θJA = 347.8 mW/°C (multi-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VDD) | Power-supply input | Accepts 1.7V–5.5V single supply; requires parallel 0.1µF + 4.7µF bypassing for PSRR >100dB. |
| 2 (GND) | Ground reference | Low-impedance return path for internal bias and output stage; must be star-connected to minimize noise coupling. |
| 3 (RS+) | High-side sense input | Connects to power-rail side of sense resistor; withstands -0.3V to +40V relative to GND. |
| 4 (RS-) | Load-side sense input | Connects to load side of sense resistor; supports Kelvin routing to reject trace IR errors. |
| 5 (OUT) | Voltage output | Single-ended rail-to-rail output (0.3–3.27V @ VDD=3.3V); drives 10kΩ loads with <20mV VOH/VOL error. |
| 6 (SHDN) | Active-low shutdown control | Logic-compatible input; <0.55V = shutdown (≤0.8µA IDD), >1.3V = active; independent of VDD level. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive-coupled chopper architecture | Enables 50nV/°C offset drift and <±40µV total VOS over -40°C to +125°C - eliminates calibration in field-deployed systems. |
| Wide input common-mode range | -0.1V to +36V operation independent of VDD - supports high-side sensing on 24V/36V rails and detects ground faults. |
| Four factory-set gain options | 500V/V (MAX44284E) eliminates external gain-setting resistors - reduces BOM count and layout sensitivity. |
| Ultra-low quiescent current | 21µA max at +25°C - enables always-on current monitoring in IoT edge nodes without compromising battery runtime. |
| Independent shutdown control | SHDN pin functions down to 0V logic - allows microcontroller GPIO direct drive without level-shifting circuitry. |
Applications
| Smartphone Battery Monitoring | Medical Infusion Pump Current Sensing |
|---|---|
|
Use Scenario: Real-time battery charge/discharge current measurement in space-constrained smartphone PCBs with 3.3V supply and 24V fast-charge capability. IC Role / Device Role / Timing Role: High-side current-sense amplifier converting 5mΩ resistor voltage drop into precise 0–3.3V analog output for ADC sampling. Use Value: 0.05% gain error and ±15µV VOS enable ±10mA current resolution at 2A full scale - critical for fuel-gauge accuracy and thermal management. |
Use Scenario: Continuous motor current monitoring in Class II medical infusion pumps powered by 12V batteries with strict IEC 60601-1 safety requirements. IC Role / Device Role / Timing Role: Isolated high-side sensing element feeding isolated sigma-delta ADC, rejecting common-mode noise from motor commutation. Use Value: -0.1V to +36V common-mode range allows detection of short-circuit events below ground and overvoltage transients - enhancing patient safety compliance. |
| Industrial 24V DC-DC Converter Monitoring | Portable ECG Device Power Path Sensing |
|
Use Scenario: Output current feedback in 24V input/5V output synchronous buck converters used in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Precision current-sense amplifier placed on high-side of output inductor to avoid ground-loop interference with control IC. Use Value: 21µA supply current minimizes auxiliary power draw; 500V/V gain matches 10mΩ sense resistor to maximize SNR into 12-bit ADC without amplification stages. |
Use Scenario: Low-noise power-path current sensing in handheld ECG devices using coin-cell batteries and ultra-low-power microcontrollers. IC Role / Device Role / Timing Role: Always-on current monitor enabling dynamic power budgeting and battery remaining-life estimation during 24-hour Holter recordings. Use Value: 50nV/°C offset drift ensures stable baseline over body-temperature variations; shutdown mode reduces current to <1µA during sleep cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision, low-power current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA219BIDR | 26V max common-mode, I²C digital output, 1% gain error, 1mA supply current | Requires microcontroller firmware integration; lacks analog output for direct ADC interfacing | Select when digital bus communication and integrated ADC are preferred over analog simplicity. |
| MAX40016AUT+T | 36V common-mode, 100V/V gain only, 25µA supply current, no shutdown pin | Fixed gain limits flexibility; absence of SHDN prevents system-level power gating | Select when 100V/V gain suffices and shutdown functionality is not required in the design. |
Compared with INA219BIDR and MAX40016AUT+T, MAX44284EAUT+T uniquely combines 500V/V analog gain, sub-1µA shutdown, and -0.1V to +36V common-mode range - delivering highest precision per µA in space- and power-constrained high-side sensing.
Availability
MAX44284EAUT+T is available at Aetrix Electronics and suitable for smartphone battery management, medical infusion pumps, industrial DC-DC converters, and portable ECG devices requiring stable component supply across automotive temperature grades.
Supply support for MAX44284EAUT+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX44284 family was developed specifically for ultra-low-power, high-accuracy current sensing in battery-operated and automotive-grade systems - emphasizing offset stability, wide common-mode tolerance, and minimal PCB footprint.
FAQ
What is the maximum input common-mode voltage supported by the MAX44284EAUT+T?
The MAX44284EAUT+T supports an input common-mode voltage range from -0.1V to +36V, independent of VDD. This allows reliable high-side sensing on 24V industrial rails and detection of negative transients such as ground faults. Absolute maximum rating for RS+/RS- pins is +40V relative to GND, but guaranteed operation remains within the -0.1V to +36V specification band.
Does the MAX44284EAUT+T require external gain-setting resistors?
No, the MAX44284EAUT+T integrates a factory-trimmed 500V/V gain amplifier. This eliminates external resistors, reduces layout sensitivity, and ensures 0.05% gain error at +25°C. The fixed gain simplifies design for applications using low-value sense resistors (e.g., 3.4mV–11mV full-scale input range with 1.7V–5.5V supplies).
How does the shutdown feature of the MAX44284EAUT+T operate?
The MAX44284EAUT+T features an active-low SHDN pin (Pin 6). Driving SHDN <0.55V places the device in shutdown mode, reducing supply current to ≤0.8µA. Driving SHDN >1.3V enables normal operation. Shutdown is independent of VDD level, allowing direct interface with 1.8V or 3.3V GPIOs without level shifters.
Can the MAX44284EAUT+T be used for low-side current sensing?
Yes - although optimized for high-side sensing, the MAX44284EAUT+T's -0.1V input common-mode range enables low-side configurations where the sense resistor is placed between load and ground. This allows detection of near-ground currents and short-circuit conditions while maintaining precision, provided Kelvin routing is used to reject PCB trace resistance errors.
What is the typical settling time of the MAX44284EAUT+T at full-scale step response?
For a 500V/V gain setting, the MAX44284EAUT+T achieves 12-bit accuracy (±1 LSB of 4096) in 4000µs when stepping VOUT from 250mV to 2.5V. This settling behavior is specified under standard test conditions (VDD = 3.3V, RL = 10kΩ to GND) and reflects the trade-off between bandwidth (0.4kHz) and precision in high-gain configurations.
MAX44284EAUT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 400 Hz
- Current - Input Bias:
- 2 nA
- Voltage - Input Offset:
- 15 µV
- Current - Supply:
- 21µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 1.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX44284EAUT+T FAQ
1.How can I place an order for MAX44284EAUT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX44284EAUT+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX44284EAUT+T reliable?
The price and inventory of MAX44284EAUT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX44284EAUT+T is usually 5 days.
3.What payment methods are accepted for MAX44284EAUT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX44284EAUT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX44284EAUT+T?
MAX44284EAUT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX44284EAUT+T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX44284EAUT+T?
For technical support, including MAX44284EAUT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX44284EAUT+T requirements.
6.How does Aetrix verify that MAX44284EAUT+T is sourced from the original manufacturer or authorized distributors?
All MAX44284EAUT+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX44284EAUT+T meets industry standards.
7.What is the process for return or replacement of MAX44284EAUT+T?
All MAX44284EAUT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX44284EAUT+T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX44284EAUT+T part is unused and in its original packaging.
Return procedure for MAX44284EAUT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX44284EAUT+T Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
