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Analog Devices Inc./Maxim Integrated MAX40080ANC+
- Part No.:
- MAX40080ANC+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 12-XFBGA, WLBGA
- Datasheet:
-
MAX40080ANC+.pdf
- Description:
- IC CURRENT SENSE 2 CIRCUIT 12WLP
- Quantity:
- Payment:
- Shipping:
Inventory:3,264
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Product details
Overview
The MAX40080ANC+ from Analog Devices is a high-precision, bidirectional digital current-sense amplifier with integrated 12-bit ADC, I²C/SMBus interface, programmable ±10mV/±50mV input range, 5µV input offset voltage, and -0.1V to +36V input common-mode range-designed for accurate real-time current monitoring in server backplanes and telecom PA control.
For engineers reviewing the MAX40080ANC+ datasheet, MAX40080ANC+ pinout, MAX40080ANC+ application, or MAX40080ANC+ equivalent, this page delivers verified technical context, package-specific pin mapping, functional alternatives, and design-critical specifications including wake-up threshold behavior, FIFO depth, and programmable sample rates up to 1Msps.
Technical Context
The MAX40080ANC+ integrates a precision current-sense amplifier (CSA) with a 12-bit signed ADC (13-bit effective resolution), digital filter, 64-cell FIFO, and configurable I²C slave address (via A0 pin). Its dual-path architecture independently digitizes current (RS+/RS−) and common-mode voltage (VS) with separate gain/offset calibration.
It supports three operational modes: active (up to 1Msps), selectable low-power (4–0.0625 conversions/s), and auto-shutdown when I²C is inactive. Programmable response time, peak-current logging, and over/under-voltage thresholds are implemented via internal registers accessible through I²C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Common-Mode Range | -0.1V to +36V - enables ground-sensing and high-side sensing across wide supply rails |
| Input Offset Voltage (CSA) | 5µV max - permits use of sub-1mΩ sense resistors without sacrificing accuracy |
| Gain Error (CSA + ADC) | ±1.05% max over -40°C to +125°C - ensures stable measurement accuracy across industrial temperature range |
| ADC Resolution | 12-bit data + sign bit - delivers 13-bit signed current values for bidirectional flow detection |
| Sample Rate | Programmable from 0.0625 to 1000 ksps - balances latency, power, and bandwidth per system requirements |
| FIFO Depth | 64 entries - buffers measurements during host I²C latency or burst reads |
| Supply Voltage (VDD) | 1.71V to 1.98V - compatible with modern low-voltage digital logic domains |
Pinout & Package
The MAX40080ANC+ is packaged in a 12-bump Wafer-Level Package (WLP) with 0.4mm pitch, specified for operation from -40°C to +125°C. Pinout matches the WLP-12 configuration shown in the official datasheet (Outline Number 21-100492).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VS | Voltage Sense Input | Monitors common-mode voltage up to +36V; used for bus voltage tracking and over/under-voltage protection |
| RS+, RS- | Differential Current-Sense Inputs | Accept bidirectional shunt voltage drop; support ±10mV or ±50mV full-scale ranges via I²C configuration |
| A0 | I²C Address Select | Sets LSB of 7-bit slave address (0x40 or 0x41); pulled internally to GND if unconnected |
| FLT+, FLT- | Filter Capacitor Terminals | External RC network sets analog bandwidth limit for noise rejection before ADC sampling |
| GND | Analog Ground Reference | Return path for CSA, ADC, and voltage buffer; must be connected to low-impedance system ground |
| VDD | Analog Supply | 1.71–1.98V supply powering internal analog circuitry and ADC reference |
| SCL, SDA | I²C Serial Interface | Standard two-wire bus compliant with I²C and SMBus protocols; supports standard/fast/high-speed modes |
| ALERT_ | Open-Drain Interrupt Output | Asserts low on programmable events: overcurrent, overvoltage, FIFO alarm, or conversion ready |
| NC | No Connect | Pin B3 (WLP) is unused and must remain unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Input Sense Range | ±10mV or ±50mV selection optimizes SNR and dynamic range for low- or high-current applications |
| Wake-Up Current Threshold | Configurable trigger level initiates full-rate sampling only when load current exceeds defined threshold, reducing average power |
| Auto-Shutdown Mode | Enters ultra-low-power standby (<15µA) automatically after I²C inactivity, eliminating external control logic |
| Peak Current Log | Hardware-accelerated tracking of maximum measured current since last reset, enabling fast fault diagnostics |
| 64-Cell FIFO with Alarm Flag | Reduces host polling overhead and prevents data loss during I²C contention or slow read cycles |
Applications
| Server Backplane Monitoring | Base-Station Power Amplifier Control |
|---|---|
Use Scenario: Real-time current monitoring of redundant 12V/48V distribution rails in high-density server chassis. IC Role / Device Role / Timing Role: Bidirectional current and voltage digitization with <35µs overcurrent response time and hardware FIFO buffering. Use Value: Enables precise power budgeting, hot-swap sequencing, and predictive failure analysis without adding MCU overhead. | Use Scenario: Closed-loop bias current control and thermal derating of GaN RF power amplifiers in 5G macro base stations. IC Role / Device Role / Timing Role: High-speed current sensing (up to 1Msps) synchronized with PA enable/disable timing to prevent transient overloads. Use Value: Maintains amplifier linearity and reliability by detecting millisecond-scale current surges before thermal damage occurs. |
| Battery-Powered Telecom Equipment | Industrial Motor Drive Protection |
Use Scenario: Accurate battery discharge/charge current and terminal voltage tracking in portable small-cell radios. IC Role / Device Role / Timing Role: Dual-path measurement (current + VS) with programmable low-power mode (as low as 13µA avg) and wake-up on load change. Use Value: Extends battery life while preserving state-of-charge accuracy and enabling rapid fault detection during field deployment. | Use Scenario: Phase current monitoring and overcurrent protection in servo drives and HVAC inverter modules. IC Role / Device Role / Timing Role: Ground-referenced sensing (down to -0.1V CM) with <32.7ms wake-up latency and configurable alert response time. Use Value: Supports compact PCB layout with single-shunt topology and eliminates need for isolated current sensors or external comparators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA229AIDGST | Higher VDD range (2.7–5.5V); no ground-sensing capability (-0.3V min CM); 16-bit ADC; no peak-log or FIFO | Best suited for higher-supply systems where ground sensing is unnecessary and higher resolution outweighs FIFO/wake-up features | Select when absolute resolution >12-bit is required and system VDD ≥2.7V; avoid for ground-sensing or ultra-low-power wake-up use cases |
| MAX40056ATA+T | Analog output only; no integrated ADC or I²C; 2.5µV offset; wider CM range (-0.2V to +65V); no digital features | Requires external ADC and microcontroller for digitization and alert logic; better for analog feedback loops or custom digital processing | Select when analog signal chain flexibility is prioritized over integrated digital functionality and power efficiency |
Compared with INA229AIDGST and MAX40056ATA+T, the MAX40080ANC+ uniquely combines ground-sensing capability, ultra-low offset, integrated FIFO, and autonomous wake-up-making it optimal for space-constrained, battery-sensitive, or high-reliability current-monitoring nodes requiring minimal host intervention.
Availability
The MAX40080ANC+ is available at Aetrix Electronics and suitable for server backplanes, telecom equipment, and industrial motor drives requiring stable component supply, extended temperature operation (-40°C to +125°C), and RoHS-compliant packaging.
Supply support for MAX40080ANC+ 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX40080 belongs to Analog Devices' precision current-sense amplifier product line, engineered for applications demanding high accuracy, fast response, and intelligent digital integration in power management subsystems.
FAQ
What is the minimum input common-mode voltage supported by the MAX40080ANC+?
The MAX40080ANC+ supports an input common-mode voltage as low as -0.1V, enabling true ground-sensing operation. This allows accurate current measurement on low-side shunts referenced directly to system ground-critical for battery monitoring and low-voltage rail applications where traditional high-side sensing introduces complexity or error.
Does the MAX40080ANC+ require external components for basic operation?
Yes-the MAX40080ANC+ requires external capacitors between FLT+ and FLT- to set analog bandwidth, a pull-up resistor on SDA/SCL lines for I²C communication, and optionally a resistor on A0 to configure the I²C address. No external ADC, op-amps, or comparators are needed, as all signal conditioning and digitization are integrated within the MAX40080ANC+.
How does the wake-up current threshold function in the MAX40080ANC+?
The wake-up current threshold in the MAX40080ANC+ is a programmable register value that triggers automatic transition from low-power mode (e.g., 4 conversions/s) to full-rate sampling (up to 1Msps) when sensed current exceeds the threshold. This feature minimizes average current consumption while ensuring rapid response to load transients-verified in the MAX40080ANC+ datasheet with 32.7ms typical wake-up latency at 15ksps.
Can the MAX40080ANC+ measure both current and voltage simultaneously?
Yes-the MAX40080ANC+ performs independent, concurrent measurements of differential current (RS+/RS−) and common-mode voltage (VS), each with dedicated signal paths, gain stages, and ADC conversion. The device alternates between current and voltage sampling with a 1ms switching time, and both results are stored in the 64-entry FIFO for synchronized host retrieval.
What I²C speeds does the MAX40080ANC+ support, and how is high-speed mode enabled?
The MAX40080ANC+ supports Standard Mode (100kHz), Fast Mode (400kHz), and High-Speed Mode (3.4MHz) I²C. HS-mode is engaged via a specific I²C command sequence (repeated START + address + HS-mode code), not hardware pins. Timing compliance is verified per JEDEC JESD84-A, with rise/fall time limits adjusted for bus capacitance up to 100pF in HS-mode.
MAX40080ANC+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 12-XFBGA, WLBGA
- Packaging:
- Strip
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 50 kHz
- Current - Input Bias:
- 1 nA
- Voltage - Input Offset:
- 5 µV
- Current - Supply:
- 2.7mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- -
- Voltage - Supply Span (Max):
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-WLP (1.7x1.27)
MAX40080ANC+ FAQ
1.How can I place an order for MAX40080ANC+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX40080ANC+ 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 MAX40080ANC+ reliable?
The price and inventory of MAX40080ANC+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX40080ANC+ is usually 5 days.
3.What payment methods are accepted for MAX40080ANC+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX40080ANC+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX40080ANC+?
MAX40080ANC+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX40080ANC+ 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 MAX40080ANC+?
For technical support, including MAX40080ANC+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX40080ANC+ requirements.
6.How does Aetrix verify that MAX40080ANC+ is sourced from the original manufacturer or authorized distributors?
All MAX40080ANC+ 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 MAX40080ANC+ meets industry standards.
7.What is the process for return or replacement of MAX40080ANC+?
All MAX40080ANC+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX40080ANC+, 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 MAX40080ANC+ part is unused and in its original packaging.
Return procedure for MAX40080ANC+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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