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Analog Devices Inc./Maxim Integrated MAX4039EBL+T
- Part No.:
- MAX4039EBL+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 9-WFBGA, WLBGA
- Datasheet:
-
MAX4039EBL+T.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 9WLP
- Quantity:
- Payment:
- Shipping:
Inventory:1,613
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Product details
Overview
MAX4039EBL+T from Maxim Integrated is a dual ultra-low-power rail-to-rail operational amplifier with integrated 1.232V buffered voltage reference, operating from +1.8V to +3.6V supply and consuming only 5.3µA total (typ) at +3.6V. It features ±100pA max input bias current, 25mV rail-to-rail output swing into 5kΩ, and 120ppm/°C reference tempco. It is designed for precision sensor signal conditioning in single- or two-cell battery-powered systems.
For engineers reviewing the MAX4039EBL+T datasheet, MAX4039EBL+T pinout, MAX4039EBL+T application, or MAX4039EBL+T equivalent, this page delivers verified specifications, UCSP package layout, dual-channel potentiostat use case, and direct alternatives for low-voltage, micropower analog front-ends.
Technical Context
The MAX4039EBL+T integrates two independent op amps and a buffered reference in a single 9-bump UCSP package. Each amplifier supports rail-to-rail input (down to VSS, up to VDD − 0.4V) and output (within 25mV of rails into 5kΩ), with unity-gain stability and 4kHz gain-bandwidth product.
The on-chip 1.232V reference provides 100µA sourcing / 20µA sinking capability, requires no external bypass capacitor, and maintains ±0.5% initial accuracy and ≤200ppm/°C temperature coefficient over −40°C to +85°C - enabling self-contained, low-drift analog sensing without external references.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +3.6V - enables direct operation from decaying Li+ or alkaline battery stacks without regulation. |
| Total Supply Current | 5.3µA (typ) at +3.6V - allows >1-year runtime on coin cells in always-on sensor nodes. |
| Input Bias Current | ±100pA (max) - preserves high-impedance electrode signals in pH meters and potentiostats. |
| Rail-to-Rail Output Swing | Within 25mV of VSS/VDD into 5kΩ - maximizes dynamic range for ADC interfacing at low supply voltages. |
| Reference Voltage | 1.232V ±0.5% (25°C), ≤200ppm/°C - eliminates need for external reference IC in portable instrumentation. |
| Gain-Bandwidth Product | 4kHz - sufficient for DC-coupled sensor amplification and slow control loops (e.g., thermostats). |
| Input Offset Voltage | ±8mV (max, full temp range) - supports µV-level signal resolution when combined with calibration. |
Pinout & Package
The MAX4039EBL+T is housed in a 3mm × 3mm, 9-bump UCSP (Ultra-Compact Silicon Package) with bottom-side bump array and exposed silicon die. The package is lead(Pb)-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (C1) | OUTA | Amplifier A output - drives external load or ADC input; rail-to-rail capable. |
| 2 (B1) | INA− | Inverting input for Channel A - used in transimpedance or differential configurations. |
| 3 (A1) | INA+ | Noninverting input for Channel A - connects to sensor, reference, or feedback network. |
| 4 (B2) | VSS | Negative supply - common ground reference for both amplifiers and reference. |
| 5 (A3) | INB+ | Noninverting input for Channel B - enables dual-sensor or ratiometric measurement. |
| 6 (B3) | INB− | Inverting input for Channel B - supports independent second channel signal path. |
| 7 (C3) | OUTB | Amplifier B output - fully independent output stage, same specs as OUTA. |
| 8 (C2) | VDD | Positive supply - accepts unregulated battery voltage from +1.8V to +3.6V. |
| 9 (A2) | REF | Buffered 1.232V reference output - supplies stable bias to sensors, ADCs, or comparator thresholds. |
Key Features
| Feature | Design Value |
|---|---|
| Dual op amps + integrated reference | Reduces BOM count by eliminating discrete reference IC and second op amp in compact designs. |
| No external reference bypass capacitor | Eliminates PCB area and cost for 100nF–1µF ceramic cap; simplifies layout and improves reliability. |
| Rail-to-rail output into 5kΩ | Delivers full-scale signal swing to 12-bit+ SAR ADCs powered from same low-voltage rail. |
| 0.25ms power-on settling time | Enables fast wake-up from sleep mode in duty-cycled sensor systems without long stabilization delays. |
| Unity-gain stable with 5000pF capacitive load | Drives long traces or ADC input capacitance directly - no isolation resistor needed. |
Applications
| Three-Electrode Potentiostat | pH Meter |
|---|---|
Use Scenario: Electrochemical cell with working, counter, and reference electrodes in portable water quality analyzers. IC Role / Device Role / Timing Role: MAX4039EBL+T configures as transimpedance amplifier (Channel A) and reference buffer (REF + Channel B) to maintain precise electrode potentials. Use Value: Ultra-low input bias current (±100pA) prevents polarization error; integrated reference ensures stable 1.232V bias without drift-induced calibration loss. | Use Scenario: Handheld or wearable pH probe with glass electrode and temperature compensation. IC Role / Device Role / Timing Role: Channel A amplifies high-impedance mV-level pH electrode output; REF supplies stable reference for ADC and temperature sensor biasing. Use Value: 25mV rail-to-rail swing preserves >98% of 3.0V full-scale ADC range; 200ppm/°C reference tempco limits pH error to <0.02 pH unit over 0–50°C. |
| Battery Voltage Monitor | Micropower Thermostat |
Use Scenario: Low-power IoT node monitoring Li+ cell voltage during storage or discharge cycles. IC Role / Device Role / Timing Role: Channel A operates as comparator with hysteresis (using REF and resistive divider); Channel B buffers reference for threshold accuracy. Use Value: 5.3µA total supply current extends battery life beyond 5 years in shelf-life monitoring; no external reference reduces component count and leakage paths. | Use Scenario: Battery-powered HVAC sensor node measuring thermistor resistance in remote locations. IC Role / Device Role / Timing Role: Channel A forms precision ratiometric bridge amplifier; REF supplies excitation to thermistor and ADC reference simultaneously. Use Value: Matched reference and excitation eliminates supply ripple sensitivity; rail-to-rail output ensures full thermistor voltage range digitized at 12-bit resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-op-amp-with-reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC1540CMS8#PBF | Single micropower op amp + reference (1.182V), 1µA supply current, SO-8 package. | Lower integration (single channel), lower reference voltage, higher supply voltage min (+2.7V). | Select when single-channel operation suffices and board space allows SO-8; not suitable for dual-sensor or potentiostat topologies requiring two independent amps. |
| MAX44267AUB+T | Dual op amp only (no reference), 1.2µA per amp, ±1pA input bias, 10MHz GBW, µMAX-8 package. | Higher speed and lower bias current, but requires external reference IC and increases BOM count. | Select when bandwidth >100kHz is required and system already includes precision reference; adds layout complexity and power overhead vs. integrated solution. |
Compared with LTC1540CMS8#PBF and MAX44267AUB+T, the MAX4039EBL+T uniquely combines dual amplifiers, integrated 1.232V reference, and sub-6µA total consumption in a 3mm × 3mm UCSP - making it optimal for space-constrained, battery-limited electrochemical and portable instrumentation where integration and ultra-low quiescent current are critical.
Availability
MAX4039EBL+T is available at Aetrix Electronics and suitable for portable medical instrumentation, battery voltage monitoring, three-electrode potentiostats, and micropower thermostats requiring stable component supply across extended production lifecycles.
Supply support for MAX4039EBL+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, medical, and communications applications.
The MAX4036–MAX4039 family was designed specifically for ultra-low-power, low-voltage analog signal conditioning - targeting battery-operated sensors, portable diagnostics, and energy-harvesting systems where every nanoamp counts.
FAQ
What is the operating temperature range for the MAX4039EBL+T?
The MAX4039EBL+T is specified for operation from −40°C to +85°C. This industrial-grade temperature range ensures reliable performance in portable medical devices, outdoor environmental sensors, and battery-powered instrumentation deployed in variable ambient conditions. All electrical parameters - including reference voltage accuracy, input bias current, and output swing - are guaranteed across this full range.
Does the MAX4039EBL+T require an external bypass capacitor on the REF pin?
No, the MAX4039EBL+T does not require an external bypass capacitor on the REF pin. Its integrated 1.232V buffered reference is internally compensated and stable with capacitive loads up to 250pF. This eliminates the need for external components, reduces PCB area, and avoids potential instability from improper capacitor selection - a key advantage in space-constrained designs like handheld pH meters or wearables.
Can the MAX4039EBL+T be used as a comparator?
Yes, the MAX4039EBL+T can be used as a rail-to-rail input/output comparator, especially in low-speed applications such as battery voltage monitoring. When configured with external hysteresis (e.g., positive feedback resistors), it avoids oscillation near threshold. However, its 4kHz gain-bandwidth and 0.25ms power-on settling time mean it is not suited for high-frequency or precision timing applications - use dedicated comparators for those cases.
What is the maximum load current the REF pin of the MAX4039EBL+T can source or sink?
The REF pin of the MAX4039EBL+T can source up to +100µA and sink up to −20µA while maintaining output voltage regulation within specification. This capability supports biasing of high-impedance networks (e.g., thermistor dividers, pH electrode buffers) and driving inputs of low-power ADCs or comparators - all without requiring additional buffer stages or external references.
Which package type does the MAX4039EBL+T use, and what are its key mechanical dimensions?
The MAX4039EBL+T uses a 3mm × 3mm, 9-bump UCSP (Ultra-Compact Silicon Package) with bottom-side solder bumps. Its footprint is 3.0mm × 3.0mm, thickness is 0.8mm max, and bump pitch is 0.5mm. This package enables ultra-dense layouts in portable devices and supports automated reflow assembly - consistent with Maxim's design intent for space-constrained, battery-powered instrumentation.
MAX4039EBL+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 9-WFBGA, WLBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.004V/µs
- Gain Bandwidth Product:
- 4 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 3µA
- Current - Output / Channel:
- 13 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 3.6 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 9-WLP
MAX4039EBL+T FAQ
1.How can I place an order for MAX4039EBL+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4039EBL+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 MAX4039EBL+T reliable?
The price and inventory of MAX4039EBL+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4039EBL+T is usually 5 days.
3.What payment methods are accepted for MAX4039EBL+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4039EBL+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4039EBL+T?
MAX4039EBL+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4039EBL+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 MAX4039EBL+T?
For technical support, including MAX4039EBL+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4039EBL+T requirements.
6.How does Aetrix verify that MAX4039EBL+T is sourced from the original manufacturer or authorized distributors?
All MAX4039EBL+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 MAX4039EBL+T meets industry standards.
7.What is the process for return or replacement of MAX4039EBL+T?
All MAX4039EBL+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4039EBL+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 MAX4039EBL+T part is unused and in its original packaging.
Return procedure for MAX4039EBL+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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