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Analog Devices Inc./Maxim Integrated MAX4326EUA+T
- Part No.:
- MAX4326EUA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4326EUA+T.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,564
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Product details
Overview
MAX4326EUA+T from Maxim Integrated is a dual, rail-to-rail input/output operational amplifier optimized for low-voltage, single-supply precision signal conditioning. It delivers 5MHz gain-bandwidth, 650µA per amplifier quiescent current, ±700µV offset voltage (typ), and drives 250Ω loads - enabling high-fidelity analog front-ends in battery-powered data-acquisition systems.
For engineers reviewing the MAX4326EUA+T datasheet, MAX4326EUA+T pinout, MAX4326EUA+T application, or MAX4326EUA+T equivalent, key selection criteria include its dual-channel rail-to-rail I/O performance at 2.4V–6.5V supply, shutdown capability (not present in this variant), unity-gain stability with ≤500pF capacitive loads, and µMAX-8 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX4326EUA+T implements a bipolar-input stage with complementary NPN/PNP differential pairs to achieve rail-to-rail common-mode input range (VEE to VCC) and output swing within millivolts of both rails. Its architecture supports stable operation with capacitive loads up to 500pF without external compensation.
Unlike the MAX4323/MAX4327 variants, the MAX4326EUA+T lacks a dedicated shutdown pin and is specified as a dual op amp in 8-pin µMAX package. It shares the same 5MHz GBWP, 2V/µs slew rate, and 700µV typical offset voltage across temperature as the family, but does not support independent channel disable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Dual amplifier - enables compact two-stage signal conditioning or differential pair implementation in one IC. |
| Gain-Bandwidth Product | 5MHz - supports stable unity-gain operation up to 5MHz; sufficient for anti-aliasing filters and sensor amplification up to ~1MHz closed-loop bandwidth. |
| Supply Voltage Range | 2.4V to 6.5V single supply - compatible with Li-ion, 3.3V, and 5V systems without level-shifting. |
| Quiescent Current | 650µA per amplifier - enables always-on sensing in portable equipment with sub-1.3mA total ICC. |
| Input Offset Voltage | ±700µV (typ) - ensures <1mV error in 1V full-scale measurements; critical for 12-bit+ ADC front-ends. |
| Rail-to-Rail I/O | Input CMVR = VEE to VCC; output swing = within 12mV of rails (RL = 250Ω) - maximizes dynamic range in low-voltage single-supply designs. |
| Slew Rate | 2V/µs - supports clean 1VP-P signals up to ~300kHz without distortion. |
Pinout & Package
MAX4326EUA+T is housed in an 8-pin µMAX package (3.0mm × 3.0mm, 0.8mm height), pin-compatible with industry-standard SO-8 and µMAX footprints. The package uses gull-wing leads and is RoHS-compliant.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Output of amplifier 1 - directly drives downstream circuitry; rail-to-rail swing supports full supply utilization. |
| 2 | IN1− | Inverting input of amplifier 1 - matched impedance routing required to minimize bias-current-induced offset. |
| 3 | IN1+ | Noninverting input of amplifier 1 - accepts signals from VEE to VCC; no phase reversal on overdrive. |
| 4 | VEE | Negative supply / ground reference - must be bypassed with 0.1µF ceramic + ≥1µF bulk capacitor for stability. |
| 5 | VCC | Positive supply - shared power rail for both amplifiers; decoupling critical for PSRR >66dB. |
| 6 | IN2+ | Noninverting input of amplifier 2 - electrically isolated from IN1+; enables independent dual-channel operation. |
| 7 | IN2− | Inverting input of amplifier 2 - polarity-matched layout with IN2+ minimizes common-mode errors. |
| 8 | OUT2 | Output of amplifier 2 - identical AC/DC specs to OUT1; supports differential output or parallel drive configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Operates with inputs from VEE to VCC - eliminates need for level-shifting in single-supply sensor interfaces. |
| Unity-gain stable with capacitive loads | Stable with up to 500pF load capacitance - simplifies driving ADC inputs or long traces without isolation resistors. |
| No phase reversal on overdriven inputs | Prevents latch-up or erroneous output transitions when input exceeds supply rails - enhances robustness in transient-prone environments. |
| Low input bias current | ±50nA (typ) - reduces voltage error across high-impedance source networks (e.g., thermistor bridges, photodiode transimpedance). |
| High PSRR and CMRR | 66dB PSRR, 60dB CMRR (min) - maintains accuracy in noisy industrial or battery-shared supply environments. |
Applications
| Battery-Powered Data Acquisition | Portable Instrumentation |
|---|---|
Use Scenario: Precision measurement of thermocouples or strain gauges in handheld multimeters or IoT sensor nodes. IC Role / Device Role / Timing Role: Signal-conditioning amplifier providing gain, filtering, and rail-to-rail buffering before 12–16-bit SAR ADC sampling. Use Value: 650µA per amplifier enables >1-year battery life in coin-cell-powered devices while maintaining ±700µV offset accuracy. | Use Scenario: Front-end amplification for ECG or pulse oximetry analog channels in wearable medical devices. IC Role / Device Role / Timing Role: Dual-channel low-noise amplifier supporting differential biopotential sensing and reference buffering. Use Value: Rail-to-rail I/O preserves full dynamic range from 1.8V–3.3V supplies, maximizing SNR without external charge pumps. |
| Low-Voltage Industrial Sensors | PA Bias Control Circuits |
Use Scenario: Amplifying outputs from MEMS pressure or humidity sensors in smart building controllers. IC Role / Device Role / Timing Role: Single-supply interface amplifier converting mV-level sensor outputs to 0–VCC range for microcontroller ADCs. Use Value: 2.4V minimum supply allows direct operation from energy-harvesting sources (e.g., solar cells, RF harvesters). | Use Scenario: Closed-loop bias control for RF power amplifiers in cellular baseband modules. IC Role / Device Role / Timing Role: Precision current-sense amplifier feeding feedback to DAC-controlled PA bias voltage. Use Value: 5MHz GBWP supports fast loop response (<2µs settling), critical for envelope tracking stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual, low-power, rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2462IDR | Lower GBWP (6.4MHz), higher ICC (550µA per amp), no shutdown; SO-8 only. | Optimized for lower noise (19nV/√Hz vs. 22nV/√Hz); better for audio preamps. | Select when higher bandwidth and lower noise outweigh rail-to-rail output swing limitations near VCC. |
| AD8602ARZ | FEMTOamp bias current (1pA), lower offset (600µV max), but higher ICC (1mA per amp) and 8MHz GBWP. | Preferred for ultra-high-impedance pH or ion-selective electrode interfaces. | Choose when femtoamp input bias is mandatory and power budget allows +50% ICC increase. |
Compared with TLV2462IDR and AD8602ARZ, the MAX4326EUA+T offers superior rail-to-rail output swing under 250Ω load and lowest quiescent current in the group - making it optimal for battery-critical, low-voltage precision acquisition where output headroom and power efficiency are primary constraints.
Availability
MAX4326EUA+T is available at Aetrix Electronics and suitable for battery-powered data acquisition, portable instrumentation, and low-voltage industrial sensors requiring stable component supply across extended production lifecycles.
Supply support for MAX4326EUA+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 industrial, automotive, communications, and computing markets.
The MAX432x family was engineered specifically for low-voltage, rail-to-rail signal conditioning in portable and energy-constrained systems - emphasizing precision, speed, and ultra-low power in miniature packages.
FAQ
What is the operating temperature range for MAX4326EUA+T?
The MAX4326EUA+T is rated for operation from –40°C to +85°C. This industrial temperature range is validated across all electrical specifications including input offset voltage (±6.0mV max), CMRR (54dB min), and output voltage swing (≤300mV from rails at RL = 250Ω). Thermal derating of power dissipation follows the 4.10mW/°C coefficient specified for the µMAX-8 package.
Does MAX4326EUA+T include a shutdown feature?
No, the MAX4326EUA+T does not include a shutdown pin. Shutdown functionality is exclusive to the MAX4323 and MAX4327 variants (e.g., MAX4323EUT-T, MAX4327ESD). The MAX4326EUA+T is a dual op amp without enable/disable control; its supply current remains at 650µA per amplifier under all operating conditions.
What is the maximum capacitive load the MAX4326EUA+T can drive stably?
The MAX4326EUA+T is unity-gain stable with capacitive loads up to 500pF, as confirmed in the datasheet's Typical Operating Characteristics (Figure 4) and AC Electrical Characteristics table. Driving loads beyond 500pF requires an isolation resistor (e.g., 39Ω) in series with the output to restore phase margin, as demonstrated in Figure 6.
Is MAX4326EUA+T pin-compatible with other packages in the MAX432x family?
Yes, the MAX4326EUA+T in 8-pin µMAX is pin-compatible with the MAX4326ESA (8-pin SO) and shares identical pin functions and ordering logic. However, it is not pin-compatible with UCSP or SOT23 variants (e.g., MAX4323EBT-T), which use different pin counts and layouts. Board design must adhere to µMAX-8 footprint dimensions (3.0mm × 3.0mm).
What is the typical input noise performance of MAX4326EUA+T?
The MAX4326EUA+T exhibits 22nV/√Hz input voltage noise density at 1kHz and 0.4pA/√Hz input current noise density at 1kHz. These values are measured under standard conditions (VCC = 5V, TA = +25°C) and remain stable across the full operating temperature range, supporting low-noise signal chains in precision sensor interfaces.
MAX4326EUA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- 5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 50 nA
- Voltage - Input Offset:
- 1.2 mV
- Current - Supply:
- 725µA (x2 Channels)
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.4 V
- Voltage - Supply Span (Max):
- 6.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX4326EUA+T FAQ
1.How can I place an order for MAX4326EUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4326EUA+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 MAX4326EUA+T reliable?
The price and inventory of MAX4326EUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4326EUA+T is usually 5 days.
3.What payment methods are accepted for MAX4326EUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4326EUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4326EUA+T?
MAX4326EUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4326EUA+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 MAX4326EUA+T?
For technical support, including MAX4326EUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4326EUA+T requirements.
6.How does Aetrix verify that MAX4326EUA+T is sourced from the original manufacturer or authorized distributors?
All MAX4326EUA+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 MAX4326EUA+T meets industry standards.
7.What is the process for return or replacement of MAX4326EUA+T?
All MAX4326EUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4326EUA+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 MAX4326EUA+T part is unused and in its original packaging.
Return procedure for MAX4326EUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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