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Analog Devices Inc./Maxim Integrated MAX4330EUK-T
- Part No.:
- MAX4330EUK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX4330EUK-T.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,431
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Product details
Overview
The MAX4330EUK-T from Maxim Integrated is a single-channel, low-power, rail-to-rail input/output operational amplifier optimized for precision signal conditioning in battery-powered and low-voltage single-supply systems. It delivers 3MHz gain-bandwidth, 245µA quiescent current per amplifier, ±250µV input offset voltage (typ), and full rail-to-rail output swing down to 2.3V supply - enabling accurate amplification of small signals near supply rails in portable data-acquisition front-ends.
For engineers reviewing the MAX4330EUK-T datasheet, MAX4330EUK-T pinout, MAX4330EUK-T application, or MAX4330EUK-T equivalent, key selection criteria include its SOT23-5 footprint compatibility, guaranteed operation at 2.3V–6.5V single supply, rail-to-rail common-mode range extending 250mV beyond VEE/VCC, and absence of phase reversal under overdrive - critical for sensor interface stability and low-noise analog front-end design.
Technical Context
The MAX4330EUK-T employs a dual-input-stage architecture combining NPN and PNP differential pairs to achieve rail-to-rail input common-mode range (VEE − 0.25V to VCC + 0.25V) and maintain CMRR >69dB across temperature. Its output stage drives 2kΩ loads while swinging within 125mV of both rails at VCC = 2.3V, with unity-gain stability and no phase reversal even when inputs exceed common-mode limits.
It features no shutdown function (unlike MAX4331/MAX4333), operates exclusively in active mode, and is fully specified from −40°C to +85°C. Input protection includes 1kΩ series resistors and back-to-back diode clamps, yielding differential input resistance of 2.3MΩ below 1.8V and ~2kΩ above - directly supporting robust interfacing with high-impedance sensors and transducers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 3MHz - supports stable closed-loop gain up to 3MHz at unity gain, suitable for anti-aliasing filters and fast sensor signal conditioning. |
| Quiescent Supply Current | 245µA per amplifier (typ) - enables multi-hour battery life in portable instrumentation with minimal thermal load. |
| Input Offset Voltage | ±250µV (max at TA = +25°C) - ensures <1LSB error in 12-bit ADC interfaces with 1V full-scale range. |
| Supply Voltage Range | +2.3V to +6.5V single supply - interoperable with Li-ion, Li-poly, and 3.3V/5V logic domains without level-shifting. |
| Output Voltage Swing | Rail-to-rail (within 125mV of VEE/VCC at RL = 2kΩ) - maximizes dynamic range for low-voltage ADC drivers and reference buffers. |
| Common-Mode Input Range | VEE − 0.25V to VCC + 0.25V - accepts input signals beyond supply rails, simplifying biasing for AC-coupled sensors. |
| Input Bias Current | ±1nA (max at TA = +25°C) - minimizes voltage error across high-impedance source networks (e.g., pH electrodes, photodiodes). |
Pinout & Package
MAX4330EUK-T is housed in a 5-pin SOT23-5 package (JEDEC MO-178AA), with 1.3mm × 2.9mm footprint and 0.95mm height - compatible with automated pick-and-place and space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VEE | Negative supply / ground reference | Return path for single-supply operation; must be bypassed with 0.1µF capacitor to minimize noise coupling. |
| 2 - IN− | Inverting input | Differential input node; internal 1kΩ series resistor and diode clamp provide ESD protection and overvoltage tolerance. |
| 3 - IN+ | Noninverting input | Differential input node; matched impedance to IN− reduces bias-current-induced offset in precision configurations. |
| 4 - OUT | Amplifier output | Capable of driving 2kΩ loads rail-to-rail; stable with capacitive loads ≤150pF without external compensation. |
| 5 - VCC | Positive supply | Accepts +2.3V to +6.5V; requires local 0.1µF ceramic decoupling to VEE for optimal PSRR and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends 250mV beyond both supply rails - eliminates need for input biasing resistors in single-supply sensor interfaces. |
| No phase reversal on overdrive | Prevents latch-up and output instability when inputs exceed common-mode limits - essential for fault-tolerant industrial sensing. |
| Low input offset voltage tempco | ±3µV/°C - maintains <1.5mV total offset drift over −40°C to +85°C, enabling stable DC-coupled measurement paths. |
| Unity-gain stable | Operates without external compensation in buffer, gain-of-two, or inverting configurations - reduces BOM count and layout complexity. |
| High PSRR and CMRR | 75dB min PSRR and 63dB min CMRR over full temperature range - rejects supply ripple and common-mode noise in noisy embedded environments. |
Applications
| Portable Medical Sensors | Industrial 4–20mA Transmitter Front-End |
|---|---|
|
Use Scenario: Amplifying low-level biopotential signals (ECG, EEG) from dry electrodes in wearable monitors powered by coin-cell batteries. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier stage with rail-to-rail input to capture sub-mV signals referenced to system ground. Use Value: 245µA quiescent current extends battery life to >1 week; ±250µV offset ensures <0.1% gain error in 12-bit acquisition chains. |
Use Scenario: Conditioning thermocouple or RTD outputs before 4–20mA loop transmission in factory-floor temperature transmitters. IC Role / Device Role / Timing Role: Low-drift, rail-to-rail output buffer driving DAC reference or current-sense amplifier input in isolated analog front-ends. Use Value: 2.3V minimum supply allows direct operation from loop-powered 3.3V LDOs; 125mV rail margin ensures full 0–5V DAC range utilization. |
| Handheld Test Equipment | Automotive Cabin Air Quality Sensor Interface |
|
Use Scenario: Signal conditioning for multimeter input stages measuring mV-range thermocouple voltages or µA-range photodiode currents. IC Role / Device Role / Timing Role: High-input-impedance, low-bias-current amplifier with no phase reversal - prevents erroneous readings during probe contact bounce. Use Value: ±1nA max input bias current avoids >10mV error across 10MΩ source impedances; 3MHz bandwidth supports fast auto-ranging. |
Use Scenario: Amplifying ppm-level CO₂ or VOC sensor outputs (e.g., NDIR detectors) in automotive HVAC control modules. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail I/O op amp interfacing with 3.3V microcontroller ADCs in harsh-temperature engine bay environments. Use Value: −40°C to +85°C rating and ±3µV/°C offset drift ensure calibration stability across vehicle lifetime; 2.3V operation supports start-stop battery voltage sag. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2461IDBVR | Higher quiescent current (600µA), lower GBW (6.4MHz), no rail-to-rail input (CMVR = VEE to VCC − 1.5V) | Less suitable for ultra-low-power battery operation; requires input biasing network for single-supply use | Select only if higher speed outweighs power penalty and input range limitations can be accommodated. |
| MCP6001T-E/OT | Lower quiescent current (100µA), lower GBW (1MHz), rail-to-rail input/output, but higher offset (±3.5mV max) | Better for micropower designs where bandwidth <1MHz suffices; less precise for <12-bit DC accuracy | Prefer for energy-harvesting or always-on sensor nodes where 1MHz bandwidth is adequate and offset tolerance >3mV is acceptable. |
Compared with TLV2461IDBVR and MCP6001T-E/OT, the MAX4330EUK-T uniquely balances 3MHz bandwidth, 245µA supply current, and true rail-to-rail input/output - making it optimal for portable instrumentation requiring both speed and precision at low voltage.
Availability
MAX4330EUK-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial 4–20mA transmitters, and handheld test equipment requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for MAX4330EUK-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, communications, and consumer applications.
The MAX4330–MAX4334 family was designed specifically for low-voltage, single-supply precision signal conditioning - targeting battery-powered instrumentation, sensor interfaces, and portable data-acquisition systems where rail-to-rail operation and micropower efficiency are mandatory.
FAQ
Does the MAX4330EUK-T support dual-supply operation?
Yes, the MAX4330EUK-T supports dual-supply operation from ±1.15V to ±3.25V. Its rail-to-rail input common-mode range extends 250mV beyond both rails, and output swing remains rail-to-rail under dual supplies. The SHDN pin logic threshold is referenced to VEE, so for dual supplies, pull SHDN to VEE to disable - though note that MAX4330EUK-T lacks shutdown functionality entirely, unlike MAX4331/MAX4333 variants.
What is the maximum capacitive load the MAX4330EUK-T can drive stably?
The MAX4330EUK-T is stable driving capacitive loads up to 150pF without external compensation. This is confirmed in the Capacitive Load Stability graph (Figure MAX4330/34-TOC21) and applies across the full 2.3V–6.5V supply range. For loads exceeding 150pF, a series isolation resistor (e.g., 39Ω) between output and capacitance restores stability, as demonstrated in Figure 5 of the datasheet.
Is the MAX4330EUK-T pin-compatible with other devices in the MAX433x family?
No - the MAX4330EUK-T uses a 5-pin SOT23-5 package with VEE, IN−, IN+, OUT, and VCC pins. Other family members like MAX4331 (8-pin µMAX/SO) and MAX4332 (8-pin SO) have different pin counts, functions (e.g., SHDN), and footprints. There is no pin-compatible upgrade or downgrade path within the MAX4330–MAX4334 family due to differing channel counts and feature sets.
Can the MAX4330EUK-T operate reliably at 2.0V supply despite the 2.3V minimum specification?
Yes - the datasheet explicitly states "Although the minimum operating voltage is specified at 2.3V, these devices typically operate down to 2.0V." This is validated in Typical Operating Characteristics (Figure MAX4330/34-TOC18), which shows functional operation at 2.0V across −40°C to +85°C. However, parameters like GBW, slew rate, and output swing are not guaranteed below 2.3V; design margins should account for potential degradation.
What is the input protection scheme used in the MAX4330EUK-T?
The MAX4330EUK-T incorporates internal 1kΩ series resistors on both IN+ and IN− inputs, plus back-to-back triple-diode stacks across the inputs (Figure 2). This provides ±1.8V differential input protection and limits input current during overvoltage events. Differential input resistance is 2.3MΩ below 1.8V and drops to ~2kΩ above that threshold, with bias current approximated by (VDIFF − 1.8V)/2kΩ - enabling predictable fault behavior in sensor interface circuits.
MAX4330EUK-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.5V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 25 nA
- Voltage - Input Offset:
- 650 µV
- Current - Supply:
- 275µA
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 2.3 V
- Voltage - Supply Span (Max):
- 6.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX4330EUK-T FAQ
1.How can I place an order for MAX4330EUK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4330EUK-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 MAX4330EUK-T reliable?
The price and inventory of MAX4330EUK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4330EUK-T is usually 5 days.
3.What payment methods are accepted for MAX4330EUK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4330EUK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4330EUK-T?
MAX4330EUK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4330EUK-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 MAX4330EUK-T?
For technical support, including MAX4330EUK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4330EUK-T requirements.
6.How does Aetrix verify that MAX4330EUK-T is sourced from the original manufacturer or authorized distributors?
All MAX4330EUK-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 MAX4330EUK-T meets industry standards.
7.What is the process for return or replacement of MAX4330EUK-T?
All MAX4330EUK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4330EUK-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 MAX4330EUK-T part is unused and in its original packaging.
Return procedure for MAX4330EUK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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