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Analog Devices Inc./Maxim Integrated MAX40108ANT+T
- Part No.:
- MAX40108ANT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-XFBGA, WLBGA
- Datasheet:
-
MAX40108ANT+T.pdf
- Description:
- 1V - 3.6V LOW VOLTAGE PRECISION
- Quantity:
- Payment:
- Shipping:
Inventory:265
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Product details
Overview
The MAX40108ANT+T from Maxim Integrated is a low-power, zero-drift operational amplifier designed for precision sensor signal conditioning in ultra-low-voltage systems. It operates from 0.9V to 3.6V supply, delivers 168kHz gain-bandwidth with only 25.5µA quiescent current, and achieves 1µV (typ) input offset voltage over temperature - enabling high-accuracy DC measurements in wearable ECG monitors and blood glucose meters.
For engineers reviewing the MAX40108ANT+T datasheet, MAX40108ANT+T pinout, MAX40108ANT+T application, or MAX40108ANT+T equivalent, this op amp's rail-to-rail CMOS inputs/outputs, internal EMI rejection, shutdown mode (320nA typ), and WLP package make it critical for space-constrained, battery-powered medical and industrial IoT front-ends.
Technical Context
The MAX40108ANT+T uses Maxim's patented autochop architecture to continuously correct input offset and suppress 1/f noise without external components, achieving stable 1µV (typ) VOS across -40°C to +125°C. Its charge-pump-based rail-to-rail input stage operates down to 0.9V supply while maintaining full common-mode range from GND to VDD.
It features an active-low SHDN_ pin that places inputs and output in high-impedance state while reducing supply current to 320nA (typ). Input logic thresholds (VIL = 0.37×VDD, VIH = 0.8×VDD) are supply-independent, simplifying direct interfacing with microcontroller GPIOs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 0.9V to 3.6V - enables direct connection to single alkaline or Li-ion cells without regulation. |
| Quiescent Current | 25.5µA (typ) - supports multi-year battery life in always-on wearable sensors. |
| Input Offset Voltage | 1µV (typ), 25µV (max over -40°C to +125°C) - eliminates calibration drift in precision analog front-ends. |
| Gain Bandwidth Product | 168kHz - sufficient for DC-coupled biosignal amplification (ECG, EMG) and slow industrial transducers. |
| Input Noise (0.1–10Hz) | 2.5µVP-P - ensures clean DC baseline for weight scales and pressure sensors. |
| Capacitive Load Stability | Stable up to 50pF - allows direct driving of ADC input capacitors or long PCB traces without isolation resistors. |
| Shutdown Current | 320nA (typ) - enables power-gating in time-sliced sensor acquisition systems. |
Pinout & Package
MAX40108ANT+T is packaged in a 1.22mm × 0.92mm, 6-bump wafer-level package (WLP) with 0.4mm bump pitch - optimized for ultra-compact wearable and implantable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| B2 | IN+ | Noninverting input - rail-to-rail CMOS input stage accepts signals from GND to VDD. |
| B1 | IN- | Inverting input - matched with IN+ for precision differential sensing. |
| B3 | OUT | Amplified output - rail-to-rail swing (within 15mV of rails, no load) maximizes dynamic range. |
| A1 | GND | Analog ground reference - must be connected to low-impedance system ground plane. |
| A2 | VDD | Positive supply - bypassed with 100nF capacitor to GND for noise immunity. |
| A3 | SHDN_ | Active-low shutdown control - pulled high for normal operation; drives <320nA when asserted. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-zero architecture | Eliminates 1/f noise and drift without external chopper clock or filtering - preserves signal integrity in sub-1Hz biosensors. |
| Rail-to-rail input/output | Full GND-to-VDD common-mode range and output swing - maximizes usable signal headroom at 0.9V supply. |
| Internal EMI rejection | Integrated filtering rejects RF interference from Bluetooth/Wi-Fi radios - critical for co-located wireless wearables. |
| Supply-independent logic thresholds | VIL/VIH scale with VDD - removes need for level-shifters when interfacing with 1.8V or 3.3V MCUs. |
| Low input bias current | 55pA (typ, -40°C to +85°C) - minimizes voltage error across high-impedance pH or thermistor sensors. |
Applications
| Wearable ECG Monitor | Portable Blood Glucose Meter |
|---|---|
Use Scenario: Amplifying microvolt-level cardiac signals from dry electrodes in a wrist-worn device powered by a single 1.5V alkaline cell. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with DC-coupled gain and auto-zero drift correction. Use Value: 1µV offset and 2.5µVP-P 0.1–10Hz noise enable detection of P-wave morphology without baseline wander. |
Use Scenario: Conditioning current output from glucose oxidase enzyme sensor under varying temperature and battery voltage conditions. IC Role / Device Role / Timing Role: Low-power transimpedance amplifier with rail-to-rail input to capture full sensor dynamic range at 0.9V supply. Use Value: 25.5µA quiescent current extends battery life beyond 2 years; 168kHz GBW supports fast test-strip insertion response. |
| Industrial Pressure Transducer | Smart Weight Scale |
Use Scenario: Amplifying mV-level bridge outputs from MEMS pressure sensors in battery-powered HVAC controllers. IC Role / Device Role / Timing Role: Precision buffer and gain stage with EMI-hardened inputs for noisy factory environments. Use Value: Internal EMI rejection prevents RF-induced offset shifts; shutdown mode reduces system idle power by >99%. |
Use Scenario: Measuring strain gauge outputs in consumer-grade bathroom scales operating from two AA batteries. IC Role / Device Role / Timing Role: Zero-drift signal conditioner with integrated shutdown for intermittent measurement cycles. Use Value: 1µV offset stability eliminates daily recalibration; 50pF capacitive load tolerance simplifies ADC interface layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision, low-voltage op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8607ARMZ-REEL | Higher 50µA supply current; 25µV max VOS; no shutdown pin; SOIC-8 package (larger footprint). | Lacks active shutdown and EMI rejection; suited for board-space-flexible industrial modules rather than wearables. | Choose AD8607ARMZ-REEL only if higher drive strength (60mA short-circuit) or SOIC assembly is required. |
| LTC2050CS5#TRMPBF | Lower 1.5µV max VOS but 65µA supply current; requires external VREF for rail-to-rail input; SOT-23-5 package. | No integrated shutdown; higher power negates battery-life advantage in portable devices. | Choose LTC2050CS5#TRMPBF only when sub-microvolt offset is mandatory and power budget allows >2× current draw. |
Compared with AD8607ARMZ-REEL and LTC2050CS5#TRMPBF, the MAX40108ANT+T uniquely combines ultra-low supply current (25.5µA), integrated shutdown (320nA), EMI rejection, and WLP packaging - making it the only option meeting all three requirements for next-gen compact medical sensors.
Availability
MAX40108ANT+T is available at Aetrix Electronics and suitable for wearable devices, home medical instruments, and industrial IoT sensors requiring stable component supply across extended temperature ranges (-40°C to +125°C) and long production lifecycles.
Supply support for MAX40108ANT+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
Maxim Integrated (now part of Analog Devices) designs high-performance analog and mixed-signal ICs for demanding applications in medical, industrial, and communications markets.
The MAX40108ANT+T belongs to Maxim's ultra-low-voltage precision op amp product line, engineered specifically for battery-powered sensor interfaces where offset drift, power, and size are simultaneously constrained.
FAQ
What is the minimum supply voltage for reliable operation of the MAX40108ANT+T?
The MAX40108ANT+T is fully specified to operate down to 0.9V supply voltage across its entire -40°C to +125°C temperature range. At 0.9V, it maintains rail-to-rail input common-mode range, 168kHz gain-bandwidth, and 1µV (typ) input offset voltage - enabling direct use with single-cell alkaline or zinc-air batteries without voltage regulation. This capability is confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables of the official datasheet.
Does the MAX40108ANT+T require external components for auto-zero functionality?
No, the MAX40108ANT+T implements Maxim's patented autochop circuit internally with no external components required. The auto-zero operation runs transparently at a frequency well above the amplifier's unity-gain bandwidth, eliminating 1/f noise and input offset drift without introducing ripple or aliasing artifacts. This is explicitly stated in the Detailed Description section and validated by the 2.5µVP-P 0.1–10Hz noise specification.
How does the shutdown mode affect the input and output states of the MAX40108ANT+T?
When the SHDN_ pin is driven low, the MAX40108ANT+T enters shutdown mode and places both inputs (IN+, IN-) and the output (OUT) into high-impedance states. Supply current drops to 320nA (typ), allowing multiple MAX40108ANT+T devices to share a common output bus without external multiplexing. This behavior is documented in the Shutdown Operation section and Pin Description table of the datasheet.
Can the MAX40108ANT+T drive a 100pF capacitive load stably?
The MAX40108ANT+T is guaranteed stable with capacitive loads up to 50pF. Driving 100pF directly may cause peaking or oscillation. For loads exceeding 50pF, the datasheet recommends adding a series isolation resistor (RISO) between OUT and the load to restore phase margin - though this reduces effective gain and output swing due to voltage division with the load resistance.
What is the purpose of the charge pump in the MAX40108ANT+T's input stage?
The internal charge pump in the MAX40108ANT+T enables true rail-to-rail input operation - extending the common-mode range from GND to VDD even at 0.9V supply. It eliminates crossover distortion inherent in complementary CMOS input pairs and requires no external components. This architecture is detailed in the Detailed Description section and directly enables high dynamic range in low-voltage sensor interfaces.
MAX40108ANT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-XFBGA, WLBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 80mV/µs
- Gain Bandwidth Product:
- 168 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 55 pA
- Voltage - Input Offset:
- 1 µV
- Current - Supply:
- 25.5µA
- Current - Output / Channel:
- 25 mA
- Voltage - Supply Span (Min):
- 0.9 V
- Voltage - Supply Span (Max):
- 3.6 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WLP (1.22x0.92)
MAX40108ANT+T FAQ
1.How can I place an order for MAX40108ANT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX40108ANT+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 MAX40108ANT+T reliable?
The price and inventory of MAX40108ANT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX40108ANT+T is usually 5 days.
3.What payment methods are accepted for MAX40108ANT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX40108ANT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX40108ANT+T?
MAX40108ANT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX40108ANT+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 MAX40108ANT+T?
For technical support, including MAX40108ANT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX40108ANT+T requirements.
6.How does Aetrix verify that MAX40108ANT+T is sourced from the original manufacturer or authorized distributors?
All MAX40108ANT+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 MAX40108ANT+T meets industry standards.
7.What is the process for return or replacement of MAX40108ANT+T?
All MAX40108ANT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX40108ANT+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 MAX40108ANT+T part is unused and in its original packaging.
Return procedure for MAX40108ANT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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