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Analog Devices Inc./Maxim Integrated MAX4376HASA+
- Part No.:
- MAX4376HASA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4376HASA+.pdf
- Description:
- IC CURRENT SENSE 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,258
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Product details
Overview
MAX4376HASA+ from Maxim Integrated is a single-channel, high-side current-sense amplifier with fixed +100V/V gain, 0V to +28V input common-mode range independent of supply voltage, ±0.5% typical full-scale accuracy at +25°C, and 1.2MHz bandwidth. It operates from +3V to +28V supply, draws 1mA typical supply current, and targets precision battery-current monitoring in automotive-grade systems.
For engineers reviewing the MAX4376HASA+ datasheet, MAX4376HASA+ pinout, MAX4376HASA+ application, or MAX4376HASA+ equivalent, key selection criteria include its AEC-Q100-qualified 8-pin SOIC package, buffered 2mA-output voltage interface, internal gain eliminating external resistors, and validated performance down to 0V common-mode for deep-discharge battery sensing.
Technical Context
The MAX4376HASA+ implements a BiCMOS-based high-side sensing architecture with an internal current-mirror gain stage and buffered output driver. Its input common-mode range (0V to +28V) remains fully functional regardless of VCC level, enabling direct connection to battery terminals even during deep discharge.
It delivers a fixed +100V/V gain without external components, supports full-scale sense voltages up to 150mV, and maintains ±0.5% total output error at +25°C across supply voltages from +3V to +28V and common-mode voltages from 0V to +28V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | +100V/V - fixed internal gain eliminates need for external gain-setting resistors |
| Common-Mode Input Range | 0V to +28V - enables sensing on battery positive rail regardless of system supply voltage |
| Total Output Error (TYP) | ±0.5% at +25°C - ensures high-accuracy current measurement without calibration |
| Bandwidth | 1.2MHz - sufficient for use inside battery-charger control loops and fast transient response |
| Supply Voltage Range | +3V to +28V - compatible with 12V/24V automotive and wide-input industrial power rails |
| Supply Current (TYP) | 1mA per amplifier - low quiescent consumption critical for always-on battery monitoring |
| Operating Temperature | -40°C to +125°C - AEC-Q100 qualified for under-hood and industrial embedded applications |
Pinout & Package
MAX4376HASA+ is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package with standard 1.27mm pitch, RoHS-compliant lead finish, and thermal resistance θJA = 255.9°C/W on multi-layer board.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Buffered voltage output proportional to sensed current; drives up to 2mA into ground-referenced load |
| 2 | GND | Analog ground reference for internal circuitry and output stage |
| 3 | VCC | Positive supply input (+3V to +28V); powers internal amplifier and buffer |
| 4 | RS+ | High-side connection to external sense resistor; accepts common-mode voltage up to +28V |
| 5 | RS− | Load-side connection to external sense resistor; differential input with ±8V max rating |
| 6–8 | N.C. | No internal connection; must be left unconnected or tied to GND per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Fixed +100V/V gain | Eliminates external gain resistors, reduces BOM count, and improves layout stability vs. discrete resistor networks |
| 0V to +28V common-mode range | Enables accurate current sensing on battery positive terminal even at 0V pack voltage - no ground-path interference |
| Buffered 2mA output driver | Directly interfaces with ADC inputs or comparator thresholds without external op-amp buffering |
| ±0.5% full-scale accuracy (TYP) | Meets tight fuel-gauge and overcurrent-protection requirements without system-level calibration |
| AEC-Q100 qualified | Validated for automotive applications including battery management, PA bias control, and ECU current monitoring |
Applications
| Automotive Battery Monitoring | Fuel Gauge in Notebook PCs |
|---|---|
Use Scenario: Real-time monitoring of 12V/24V starter battery charge/discharge current in engine control units. IC Role / Device Role / Timing Role: High-side current-sense amplifier converting shunt voltage to buffered analog output for microcontroller ADC sampling. Use Value: Enables precise state-of-charge estimation and overcurrent protection with ±0.5% accuracy across -40°C to +125°C. |
Use Scenario: Measuring battery discharge current in ultrabook platforms to compute remaining runtime. IC Role / Device Role / Timing Role: Single-channel current sensor feeding analog voltage to system management controller (SMC) for fuel-gauge algorithm. Use Value: Delivers 1.2MHz bandwidth and 0V–28V common-mode operation to track dynamic load changes during CPU/GPU bursts. |
| Battery Charger Control Loop | PA Bias Current Regulation |
Use Scenario: Closed-loop current regulation in switch-mode battery chargers for Li-ion packs. IC Role / Device Role / Timing Role: High-bandwidth current feedback element in charger IC's error amplifier path. Use Value: 1.2MHz bandwidth and 400ns setting time support stable control loop response without phase lag. |
Use Scenario: Monitoring and regulating bias current in RF power amplifiers for cellular base stations. IC Role / Device Role / Timing Role: Precision high-side monitor providing real-time PA current data to digital predistortion (DPD) controller. Use Value: ±0.5% accuracy and 0V–28V common-mode range ensure reliable bias tracking across varying supply and temperature conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4376TAUK+T | +20V/V gain, 5-pin SOT23 package, same -40°C to +125°C range | Lower gain suits higher-current, lower-resistance shunt designs; smaller footprint but reduced output voltage swing per mA | Select when full-scale current >1A and PCB space is constrained; requires recalculating RSENSE for same VOUT |
| INA240A1QDRQ1 | +20V/V gain, AEC-Q100 Grade 1, 8-pin SOIC, 4V/V to 500V/V programmable gain via external resistors | Requires external gain resistors; wider common-mode (-4V to +80V); higher offset drift over temperature | Choose when bidirectional sensing or extended common-mode beyond +28V is required; adds design complexity and calibration burden |
Compared with MAX4376HASA+, MAX4376TAUK+T offers lower gain and smaller size but sacrifices output signal-to-noise ratio for high-precision low-current sensing, while INA240A1QDRQ1 provides broader voltage range and flexibility at the cost of external components and reduced baseline accuracy.
Availability
MAX4376HASA+ is available at Aetrix Electronics and suitable for automotive battery monitoring, notebook PC fuel gauges, and battery charger control loops requiring stable component supply, AEC-Q100 qualification, and long-term production continuity.
Supply support for MAX4376HASA+ 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
Maxim Integrated, now part of Analog Devices, designs precision analog and mixed-signal ICs for automotive, industrial, and computing markets, with emphasis on reliability, integration, and power efficiency.
The MAX4376 family delivers high-side current sensing with internal gain for battery-powered and automotive systems where ground-path integrity and measurement accuracy across wide voltage/temperature ranges are critical.
FAQ
What is the maximum common-mode voltage supported by MAX4376HASA+?
The MAX4376HASA+ supports a common-mode input voltage range of 0V to +28V, independent of supply voltage. This allows direct connection to battery positive terminals even during deep discharge, and is guaranteed functional across the full -40°C to +125°C operating temperature range. Absolute maximum rating extends to +30V for RS+ and RS− pins.
Does MAX4376HASA+ require external gain-setting resistors?
No, MAX4376HASA+ does not require external gain-setting resistors. It features a fixed +100V/V internal gain determined by laser-trimmed on-die resistors. This eliminates gain error from external component tolerance and temperature drift, contributing to the ±0.5% typical full-scale accuracy at +25°C.
Is MAX4376HASA+ qualified for automotive applications?
Yes, MAX4376HASA+ is AEC-Q100 qualified and rated for the full automotive temperature range of -40°C to +125°C. It is explicitly listed in Maxim's Ordering Information table with /V suffix variants, and its electrical specifications-including total output error, gain accuracy, and supply current-are guaranteed across this range.
What is the output drive capability of MAX4376HASA+?
MAX4376HASA+ provides a buffered voltage output capable of sourcing up to 2mA into a ground-referenced load. The output low voltage is typically 25mV at 200µA sink current, and output high saturation voltage is typically 1.2V below VCC at 2mA source current-enabling direct interfacing with most 12-bit ADCs and comparators without additional buffering.
Can MAX4376HASA+ operate with a 3V supply?
Yes, MAX4376HASA+ operates over a supply voltage range of +3V to +28V. At VCC = +3V, it maintains full functionality including 0V to +28V common-mode input range and ±0.5% full-scale accuracy at +25°C. Supply current remains within 1mA typical, making it suitable for low-voltage portable and backup-power systems.
MAX4376HASA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 10V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 1.2 MHz
- Current - Input Bias:
- 800 µA
- Voltage - Input Offset:
- -
- Current - Supply:
- 1mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 28 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX4376HASA+ FAQ
1.How can I place an order for MAX4376HASA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4376HASA+ 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 MAX4376HASA+ reliable?
The price and inventory of MAX4376HASA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4376HASA+ is usually 5 days.
3.What payment methods are accepted for MAX4376HASA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4376HASA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4376HASA+?
MAX4376HASA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4376HASA+ 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 MAX4376HASA+?
For technical support, including MAX4376HASA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4376HASA+ requirements.
6.How does Aetrix verify that MAX4376HASA+ is sourced from the original manufacturer or authorized distributors?
All MAX4376HASA+ 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 MAX4376HASA+ meets industry standards.
7.What is the process for return or replacement of MAX4376HASA+?
All MAX4376HASA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4376HASA+, 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 MAX4376HASA+ part is unused and in its original packaging.
Return procedure for MAX4376HASA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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