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Analog Devices Inc./Maxim Integrated MAX44264EWT+T
- Part No.:
- MAX44264EWT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-WFBGA, WLBGA
- Datasheet:
-
MAX44264EWT+T.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 6WLP
- Quantity:
- Payment:
- Shipping:
Inventory:2,019
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Product details
Overview
The MAX44264EWT+T from Maxim Integrated is a nanoPower operational amplifier in a 6-bump WLP package, delivering 750nA supply current, rail-to-rail output swing within 4mV of rails (100kΩ load), and ground-sensing inputs. It operates from +1.8V to +5.5V and supports battery-powered portable electronics requiring ultra-low quiescent power and wide input common-mode range.
For engineers reviewing the MAX44264EWT+T datasheet, MAX44264EWT+T pinout, MAX44264EWT+T application, or MAX44264EWT+T equivalent, key selection criteria include its 9kHz gain-bandwidth, ±5mV max input offset voltage at +25°C, 120dB open-loop gain, 250pF capacitive load drive capability, and guaranteed no phase reversal under overdrive - all critical for precision low-power sensor signal conditioning and battery monitoring circuits.
Technical Context
The MAX44264EWT+T uses BiCMOS process technology to achieve ultra-low supply current while maintaining rail-to-rail output stage performance and ground-sensing input architecture. Its input common-mode range extends from VSS to (VDD – 1.1V), enabling direct interfacing with grounded sensors and single-supply ADCs.
Internally compensated for unity-gain stability, the device delivers 9kHz gain-bandwidth with 90° phase margin and stable operation into ≥250pF capacitive loads. Output sourcing/sinking capability reaches 11mA (sourcing) and 36mA (sinking) at +5V, supporting moderate drive requirements without external buffers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 0.75µA typical at +5V - enables multi-year battery life in coin-cell or Li+ systems |
| Supply Voltage Range | +1.8V to +5.5V - compatible with single Li+, two-cell alkaline/NiCd, and regulated 3.3V/5V rails |
| Input Offset Voltage | ±5mV max at +25°C - ensures <1% error in mV-level sensor amplification without trimming |
| Gain-Bandwidth Product | 9kHz - suitable for DC–low-frequency signal conditioning (e.g., thermistor, strain gauge, battery voltage sense) |
| Rail-to-Rail Output Swing | Within 4mV of rails (100kΩ load) - maximizes dynamic range for low-voltage ADC interfacing |
| Capacitive Load Drive | 250pF minimum - supports direct connection to long traces or ADC input capacitance without instability |
| Open-Loop Voltage Gain | 120dB typical - provides high closed-loop accuracy and low gain error in precision buffer/gain stages |
Pinout & Package
The MAX44264EWT+T is housed in a 0.9mm × 1.3mm, 6-bump Wafer-Level Package (WLP) with bottom-side bump layout. The package is RoHS-compliant and marked "+CB" on top.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | IN+ | Noninverting input - accepts signals down to ground; no phase reversal when overdriven |
| A2 | VSS | Negative supply terminal - connects to system ground; defines lower common-mode limit |
| B1 | IN- | Inverting input - used for feedback configuration; shares same ground-sensing capability as IN+ |
| B2 | VDD | Positive supply terminal - accepts +1.8V to +5.5V; requires local 0.1µF ceramic bypass |
| C1 | OUT | Amplifier output - drives rail-to-rail into 100kΩ, sources 11mA/sinks 36mA at +5V |
| C2 | N.C. | No internal connection - must be left floating; not tied to VSS or any other node |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply current | 750nA per amplifier enables >10-year operation on CR2032 coin cell in always-on sensor nodes |
| Ground-sensing inputs | Common-mode range includes VSS, allowing direct interface with grounded transducers and shunt resistors |
| No phase reversal | Guaranteed immunity to input overdrive-induced polarity inversion - eliminates signal corruption in transient conditions |
| Rail-to-rail output | Swings within 4mV of VDD/VSS at 100kΩ load, preserving full ADC input range in 1.8V–3.3V systems |
| Unity-gain stable | Internally compensated for stable operation at AV = 1, simplifying design of buffers and active filters |
Applications
| Battery Voltage Monitoring | Portable Medical Sensors |
|---|---|
Use Scenario: Real-time measurement of Li+ cell voltage during charging/discharging cycles in wearables and handheld devices. IC Role / Device Role / Timing Role: Precision buffer and level-shifting amplifier between battery node and low-voltage SAR ADC. Use Value: 750nA quiescent current minimizes self-discharge; rail-to-rail output ensures full-scale ADC utilization across 2.5V–4.2V battery range. | Use Scenario: Amplifying microvolt-level bio-potential signals (e.g., ECG, pulse oximetry) in battery-powered clinical-grade monitors. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier input buffer with ground-referenced sensing and low noise. Use Value: Ground-sensing inputs enable direct connection to patient electrodes; 120dB open-loop gain maintains signal fidelity without trimming. |
| Smart Home Sensor Nodes | Industrial Battery Management |
Use Scenario: Signal conditioning for temperature, humidity, and occupancy sensors in Zigbee/Z-Wave edge nodes powered by AA batteries. IC Role / Device Role / Timing Role: Low-power transducer interface amplifier driving ADC or comparator inputs. Use Value: 9kHz bandwidth suffices for slow-varying environmental data; 250pF load drive accommodates PCB trace capacitance without compensation. | Use Scenario: Cell balancing monitor and voltage reference buffer in multi-cell Li-ion packs for UPS and energy storage systems. IC Role / Device Role / Timing Role: High-impedance voltage follower isolating cell taps from measurement circuitry. Use Value: Input bias current ≤1.5nA prevents loading errors on high-resistance divider networks; ±5mV offset ensures <0.1% voltage measurement error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nanoPower op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV8801DRYR | 700nA supply current, 6kHz GBW, 1.2V min supply, 100pF load drive | Limited to lower supply voltages; reduced bandwidth and capacitive drive vs. MAX44264EWT+T | Preferred where supply is ≤2.0V and bandwidth <6kHz suffices; smaller WSON-6 footprint but less robust output drive |
| LTC2050HMS8#TRPBF | 1.5µA supply current, 3MHz GBW, ±15V operation, chopper-stabilized zero-drift | Higher power, wider supply range, and precision zero-drift - not nanoPower-class | Selected when µV-level offset stability over temperature is required, accepting higher current draw and cost |
Compared with TLV8801DRYR and LTC2050HMS8#TRPBF, the MAX44264EWT+T uniquely balances ultra-low 750nA current, 9kHz bandwidth, rail-to-rail I/O, and 250pF capacitive load tolerance - making it optimal for space-constrained, single-supply, battery-critical designs where both precision and longevity are mandatory.
Availability
MAX44264EWT+T is available at Aetrix Electronics and suitable for battery voltage monitoring, portable medical sensors, smart home sensor nodes, and industrial battery management requiring stable component supply across extended product lifecycles.
Supply support for MAX44264EWT+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 precision analog, mixed-signal, and power management ICs for industrial, automotive, communications, and consumer applications.
The MAX44264EWT+T belongs to Maxim's nanoPower op amp product line, engineered specifically for ultra-low-power signal conditioning in battery-operated portable and IoT edge devices where micropower operation and small size are essential.
FAQ
What is the maximum operating temperature range for the MAX44264EWT+T?
The MAX44264EWT+T is specified for operation from -40°C to +85°C ambient temperature. This range is fully characterized and guaranteed across all key parameters including supply current, input offset voltage, and output swing. Junction temperature must not exceed +150°C under continuous operation, and the device is rated for storage from -65°C to +150°C. Thermal derating begins above +70°C ambient in the 6-bump WLP package.
Does the MAX44264EWT+T require external compensation for unity-gain stability?
No, the MAX44264EWT+T is internally compensated and unity-gain stable without external components. It maintains ≥90° phase margin and stable step response into ≥250pF capacitive loads at unity gain. External compensation (e.g., 2–10pF feedback capacitor) is only recommended if PCB layout introduces significant stray capacitance at the inverting input node - a rare requirement given its robust inherent stability.
Can the MAX44264EWT+T drive a 10kΩ load rail-to-rail?
Yes, the MAX44264EWT+T can drive a 10kΩ load rail-to-rail, though with reduced swing margin: VOL is typically 10mV above VSS and VOH is typically 40mV below VDD at +25°C. This remains usable for many low-speed, low-precision interfaces. For tighter rail margins, use ≥100kΩ loads where swing improves to ≤5mV from rails - confirmed in Electrical Characteristics tables for RL = 100kΩ and RL = 1MΩ.
Is the N.C. pin (C2) on the MAX44264EWT+T required to be grounded or left floating?
The C2 bump on the MAX44264EWT+T is explicitly designated as N.C. (No Connection) and is not internally connected. It must be left electrically floating - neither grounded nor tied to VDD or any other net. Connecting it risks parasitic coupling or unintended current paths. The WLP land pattern should omit solder paste or routing for this bump to prevent accidental shorting during assembly.
What is the typical input bias current of the MAX44264EWT+T at +25°C?
The typical input bias current of the MAX44264EWT+T at +25°C is 4.25nA, with a maximum of 1.5nA specified over the full -40°C to +85°C temperature range. This low bias current minimizes voltage errors when used with high-impedance sources such as thermistors, photodiodes, or resistor dividers - critical for accurate battery voltage or sensor measurements without additional guarding or buffering.
MAX44264EWT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WFBGA, WLBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.002V/µs
- Gain Bandwidth Product:
- 9 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 200 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 750nA
- Current - Output / Channel:
- 36 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WLP (1.24x0.84)
MAX44264EWT+T FAQ
1.How can I place an order for MAX44264EWT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX44264EWT+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 MAX44264EWT+T reliable?
The price and inventory of MAX44264EWT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX44264EWT+T is usually 5 days.
3.What payment methods are accepted for MAX44264EWT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX44264EWT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX44264EWT+T?
MAX44264EWT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX44264EWT+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 MAX44264EWT+T?
For technical support, including MAX44264EWT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX44264EWT+T requirements.
6.How does Aetrix verify that MAX44264EWT+T is sourced from the original manufacturer or authorized distributors?
All MAX44264EWT+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 MAX44264EWT+T meets industry standards.
7.What is the process for return or replacement of MAX44264EWT+T?
All MAX44264EWT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX44264EWT+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 MAX44264EWT+T part is unused and in its original packaging.
Return procedure for MAX44264EWT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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