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Analog Devices Inc./Maxim Integrated MAX4038EBL+T
- Part No.:
- MAX4038EBL+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 9-WFBGA, WLBGA
- Datasheet:
-
MAX4038EBL+T.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 9WLP
- Quantity:
- Payment:
- Shipping:
Inventory:4,438
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Product details
Overview
The MAX4038EBL+T from Maxim Integrated is a dual, rail-to-rail input/output operational amplifier with no integrated voltage reference, operating from +1.4V to +3.6V supply, consuming only 2.9–3.2µA total (1.45–1.6µA per amplifier), featuring 800nA per amplifier supply current, 200µV typical input offset voltage, and rail-to-rail output swing within 25mV of rails into 5kΩ loads. It is designed for ultra-low-power, single-cell Li⁺ or two-cell alkaline/NiMH battery-powered sensor signal conditioning.
For engineers reviewing the MAX4038EBL+T datasheet, MAX4038EBL+T pinout, MAX4038EBL+T application, or MAX4038EBL+T equivalent, this page delivers verified electrical parameters, UCSP-9 package mapping, dual-channel op amp functional context, and real-world use cases in potentiostats, remote sensors, and micropower thermostats - all confirmed from Maxim's official datasheet Rev 5 (11/09).
Technical Context
The MAX4038EBL+T implements a BiCMOS-based dual op amp architecture optimized for sub-2V operation, with input common-mode range extending to VSS and up to VDD − 0.4V at 1.4V supply. Its rail-to-rail output stage drives 5kΩ loads while maintaining <25mV headroom to both rails at room temperature.
It features unity-gain stability, no phase reversal on overdriven inputs, and supports capacitive loads up to 5000pF without external compensation. The device lacks an internal reference - distinguishing it from the MAX4039 family - and requires no reference bypass capacitor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.4V to +3.6V - enables direct operation from single Li⁺ cell (2.7–4.2V nominal) or two alkaline/NiMH cells (2.0–3.2V fresh). |
| Supply Current (total) | 2.9µA (typ) at VDD = 1.4V - ensures >10-year battery life in always-on 10µA budget systems. |
| Input Offset Voltage | ±2.0mV (max) - supports 12-bit accuracy in 3V full-scale sensor interfaces without trimming. |
| Input Bias Current | ±10pA (typ) - preserves high-impedance pH electrode and electrometer signals without loading error. |
| Output Swing (RL = 5kΩ) | Within 25mV of VSS and VDD - delivers full dynamic range across entire supply rail in low-voltage ADC front-ends. |
| Gain-Bandwidth Product | 4kHz - suitable for DC-coupled sensor amplification, thermistor conditioning, and slow-settling potentiostat loops. |
| Operating Temperature | −40°C to +85°C - qualified for industrial and portable medical environments. |
Pinout & Package
The MAX4038EBL+T is packaged in a 9-bump UCSP (Ultra Compact Silicon Package), 3mm × 3mm × 0.8mm, with exposed substrate connected to VSS. Bump-side-down mounting required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (C1) | OUTA | Amplifier A output - rail-to-rail capable, drives 5kΩ load to within 25mV of rails. |
| 2 (B1) | INA− | Inverting input of Channel A - high-impedance node (IB ≤ ±10pA) for precision feedback networks. |
| 3 (A1) | INA+ | Noninverting input of Channel A - accepts common-mode voltages from VSS to VDD − 0.4V at 1.4V supply. |
| 4 (B2) | VSS | Negative supply - internally connects to UCSP exposed substrate; must be tied to system ground. |
| 5 (A3) | INB+ | Noninverting input of Channel B - independent of Channel A; supports dual-sensor or differential pair topologies. |
| 6 (B3) | INB− | Inverting input of Channel B - matched bias current and offset specs to INA± for consistent dual-channel performance. |
| 7 (C3) | OUTB | Amplifier B output - identical AC/DC specs to OUTA; enables independent gain stages or buffer + filter configurations. |
| 8 (C2) | VDD | Positive supply - accepts 1.4–3.6V; requires 0.1µF ceramic bypass to VSS near pin. |
| 9 (A2) | REF | No connection - MAX4038 has no internal reference; pin is NC and must be left floating or grounded per layout best practice. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 800nA per amplifier supply current | Enables multi-year operation from coin-cell batteries in wireless sensor nodes and active badges. |
| Rail-to-rail output driving 5kΩ + 5000pF | Eliminates need for level-shifting or external buffers when interfacing with SAR ADCs or low-power microcontrollers. |
| No phase reversal on overdriven inputs | Prevents latch-up or erroneous output states during transient sensor overload or ESD events. |
| Low 200µV input offset voltage | Reduces calibration burden in medical-grade thermistor and strain gauge signal chains. |
| Unity-gain stable with no external compensation | Simplifies PCB layout and reduces BOM count in space-constrained portable instrumentation. |
Applications
| Electrometer Amplifier | Potentiostat Circuit |
|---|---|
Use Scenario: Amplifying picoamp-level currents from ion-selective electrodes or photodiodes in lab-grade pH meters. IC Role / Device Role / Timing Role: Dual-channel transimpedance amplifier - Channel A converts current to voltage, Channel B provides reference buffer or guard drive. Use Value: ±10pA input bias current minimizes measurement error; rail-to-rail output maximizes dynamic range into 3V ADCs. | Use Scenario: Controlling working electrode potential vs. reference electrode in electrochemical corrosion monitoring. IC Role / Device Role / Timing Role: Dual op amp implementing three-electrode potentiostat topology - one channel as controlled-potential source, second as current sense amplifier. Use Value: 200µV offset and 800nA supply current enable accurate µA-level current resolution with minimal self-heating in sealed enclosures. |
| Remote Sensor Node | Micropower Thermostat |
Use Scenario: Signal conditioning for battery-powered temperature/humidity sensors deployed in HVAC ducts or agricultural fields. IC Role / Device Role / Timing Role: Low-noise, dual-stage amplifier - first stage gains thermistor bridge output, second stage filters and buffers for ADC input. Use Value: 4kHz GBW and 500nV/√Hz input noise support 0.1°C resolution; 2.9µA total IDD extends 200mAh CR2032 life beyond 8 years. | Use Scenario: Precision ambient temperature sensing and hysteresis control in smart home thermostats powered by AA batteries. IC Role / Device Role / Timing Role: Dual comparator/amplifier - one channel compares sensor output to threshold, second implements hysteresis via resistor network. Use Value: No external reference needed for threshold generation; rail-to-rail I/O allows full utilization of 1.8V microcontroller GPIO thresholds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-power op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4039EBL+T | Includes integrated 1.232V ±0.5% buffered reference; higher supply current (5.2–5.3µA total); same UCSP-9 package and pinout except REF pin is functional. | Required where a precision reference is needed for ADC reference, comparator threshold, or sensor excitation - not suitable if reference adds unnecessary quiescent power. | Select MAX4039EBL+T only when reference functionality is explicitly required; otherwise MAX4038EBL+T saves ~2.3µA. |
| LTC1540CMS8#TRPBF | Single micropower op amp + reference (1.182V); 1.1µA supply current; SO-8 package; no rail-to-rail output (swing limited to VDD − 150mV). | Applicable only for single-channel, non-rail-to-rail, ultra-low-current (<1.2µA) designs - cannot replace dual-channel or rail-to-rail requirements of MAX4038EBL+T. | Consider only for single-ended, non-critical swing applications where board space permits SO-8 and reference integration is beneficial. |
Compared with MAX4039EBL+T, the MAX4038EBL+T eliminates reference-related current and noise, improving battery life and simplifying layout where no reference is needed; versus LTC1540, it provides true dual-channel rail-to-rail operation at slightly higher current but significantly better output swing and channel independence.
Availability
MAX4038EBL+T is available at Aetrix Electronics and suitable for battery-powered medical instrumentation, remote environmental sensors, and micropower thermostat controllers requiring stable component supply across extended product lifecycles.
Supply support for MAX4038EBL+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, medical, and communications applications.
The MAX4036–MAX4039 family targets ultra-low-power, low-voltage signal conditioning - specifically engineered for single-cell and energy-harvesting systems where supply current below 1µA per amplifier and operation down to +1.4V are mandatory.
FAQ
What is the supply voltage range for the MAX4038EBL+T?
The MAX4038EBL+T operates from a single +1.4V to +3.6V supply, validated across its full −40°C to +85°C temperature range. At 1.4V, it guarantees functionality including rail-to-rail output swing and specified input common-mode range (VSS to VDD − 0.4V). This makes the MAX4038EBL+T uniquely suited for direct connection to aging alkaline or single Li⁺ cells without regulation.
Does the MAX4038EBL+T include an integrated voltage reference?
No, the MAX4038EBL+T does not include an integrated voltage reference. Unlike the MAX4039 variants, the REF pin on the MAX4038EBL+T is a no-connect (NC) terminal and must be left floating or grounded per layout guidelines. Reference functionality is exclusive to the MAX4039 family; the MAX4038EBL+T is strictly a dual op amp with zero reference current consumption.
What is the input bias current specification for the MAX4038EBL+T?
The MAX4038EBL+T specifies a maximum input bias current of ±10pA at +25°C and ±100pA over the full −40°C to +85°C range. This ultra-low IB enables high-fidelity amplification of signals from high-impedance sources such as pH electrodes, piezoelectric sensors, and photodiodes without significant DC error or signal attenuation.
Can the MAX4038EBL+T drive heavy capacitive loads?
Yes, the MAX4038EBL+T is unity-gain stable and can drive up to 5000pF capacitive loads directly without external compensation or isolation resistors. This capability simplifies interface design with long traces, LCD drivers, or sampling ADCs. For loads exceeding 5000pF, a series isolation resistor (RISO) is recommended to maintain stability, though it will reduce effective gain and output swing.
What package type is used for the MAX4038EBL+T?
The MAX4038EBL+T uses a 9-bump UCSP (Ultra Compact Silicon Package), measuring 3mm × 3mm × 0.8mm, with bump-side-down mounting. The exposed substrate is internally connected to VSS, and the package is RoHS-compliant. Pin 4 (B2) is VSS and serves as the thermal and electrical ground connection point for the die.
MAX4038EBL+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:
- 1.9µA
- Current - Output / Channel:
- 13 mA
- Voltage - Supply Span (Min):
- 1.4 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
MAX4038EBL+T FAQ
1.How can I place an order for MAX4038EBL+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4038EBL+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 MAX4038EBL+T reliable?
The price and inventory of MAX4038EBL+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4038EBL+T is usually 5 days.
3.What payment methods are accepted for MAX4038EBL+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4038EBL+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4038EBL+T?
MAX4038EBL+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4038EBL+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 MAX4038EBL+T?
For technical support, including MAX4038EBL+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4038EBL+T requirements.
6.How does Aetrix verify that MAX4038EBL+T is sourced from the original manufacturer or authorized distributors?
All MAX4038EBL+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 MAX4038EBL+T meets industry standards.
7.What is the process for return or replacement of MAX4038EBL+T?
All MAX4038EBL+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4038EBL+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 MAX4038EBL+T part is unused and in its original packaging.
Return procedure for MAX4038EBL+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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