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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:5,000
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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 (in related variants), capacitive-load stability up to 500pF, and µMAX-8 package compatibility with space-constrained industrial sensor interfaces.
Technical Context
The MAX4326EUA-T implements a bipolar-input stage with complementary NPN/PNP differential pairs to achieve rail-to-rail input common-mode range (VEE to VCC) and output swing within 350mV of rails under 500Ω load. Its unity-gain-stable architecture supports capacitive loads up to 500pF without external compensation.
Unlike the MAX4323/MAX4327, the MAX4326EUA-T lacks a dedicated shutdown pin; it operates continuously when powered. Its dual-amplifier topology (340 transistors) enables matched channel performance for differential sensing and active filtering in portable instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 5MHz - supports stable closed-loop operation up to 100kHz with gain ≥50, suitable for anti-aliasing and sensor amplification stages. |
| Supply Voltage Range | 2.4V to 6.5V single supply - enables direct interfacing with Li-ion (3.0–4.2V), 3.3V logic, and 5V microcontrollers without level-shifting. |
| Input Offset Voltage | ±700µV (typ) at +25°C - ensures ≤3.5mV error in 5V full-scale 12-bit ADC front-end with unity-gain buffer configuration. |
| Quiescent Current | 650µA per amplifier - allows dual-channel operation at <1.3mA total, critical for multi-day battery life in portable data loggers. |
| Output Swing | VOL ≤ 250mV above VEE, VOH ≥ VCC – 350mV into 250Ω - preserves >90% dynamic range for 3.3V ADCs with ground-referenced inputs. |
| Capacitive Load Stability | Stable with ≤500pF - eliminates need for isolation resistors when driving ADC input capacitance or long PCB traces. |
| Common-Mode Rejection | 60dB (min) over -40°C to +85°C - rejects power-supply ripple and EMI coupling in noisy industrial environments. |
Pinout & Package
The 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. This thermally enhanced, lead-free package supports reflow soldering and provides improved thermal resistance versus SOT23 variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplifier 1 output - directly drives ADC input, filter network, or reference buffer with rail-to-rail swing. |
| 2 | IN1- | Inverting input of Amp 1 - connects to feedback network or differential sensor leg; accepts common-mode voltages from VEE to VCC. |
| 3 | IN1+ | Noninverting input of Amp 1 - interfaces with high-impedance sensors (e.g., thermocouples, bridge outputs) without attenuation. |
| 4 | VEE | Negative supply / ground reference - must be bypassed with 0.1µF ceramic + 1µF bulk capacitor for noise immunity. |
| 5 | VCC | Positive supply - supplies both amplifiers; shared rail requires low-ESR decoupling adjacent to pin. |
| 6 | IN2+ | Noninverting input of Amp 2 - enables simultaneous dual-sensor conditioning (e.g., temperature + humidity) with matched DC specs. |
| 7 | IN2- | Inverting input of Amp 2 - used for programmable gain stages or differential-to-single-ended conversion. |
| 8 | OUT2 | Amplifier 2 output - independent channel allows active filtering (e.g., 2nd-order low-pass) without crosstalk (135dB isolation). |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full utilization of 3.3V/5V ADC input range without level-shifting circuitry or supply headroom loss. |
| 5MHz GBWP | Supports accurate amplification of fast transients (e.g., pulse oximetry, ultrasonic echo signals) with minimal phase lag. |
| 650µA per amplifier | Permits dual-channel analog signal chain operation on coin-cell batteries (CR2032) for >1 year in sleep-wake cycles. |
| No phase reversal | Prevents latch-up or erroneous output during input overdrive (e.g., ESD events or sensor disconnect), enhancing system robustness. |
| Unity-gain stable | Eliminates need for external compensation components in buffer, follower, or gain-of-one configurations - reduces BOM count. |
Applications
| Battery-Powered Data Acquisition | Portable Medical Instrumentation |
|---|---|
Use Scenario: Handheld multimeter acquiring DC voltage, current, and resistance with 12-bit resolution. IC Role / Device Role / Timing Role: Dual op-amp configured as precision I/V converter and reference buffer, driving SAR ADC input. Use Value: Rail-to-rail output swing maximizes ADC code utilization; 650µA quiescent current extends battery life beyond 500 hours. | Use Scenario: Wearable ECG monitor digitizing biopotential signals with low-noise front-end. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier gain block and second-stage high-pass filter driver. Use Value: 22nV/√Hz input noise density and 60dB CMRR ensure clean signal extraction from 50Hz mains interference. |
| Low-Voltage Sensor Interface | Industrial Process Monitoring |
Use Scenario: IoT node measuring RTD or thermistor temperature using 3.3V MCU and sigma-delta ADC. IC Role / Device Role / Timing Role: Precision voltage follower buffering sensor bridge output, rejecting common-mode noise on long cables. Use Value: ±700µV offset voltage contributes <0.1°C error in 0–100°C range; rail-to-rail input accommodates sensor excitation headroom. | Use Scenario: Programmable logic controller (PLC) analog input module conditioning 4–20mA loop signals. IC Role / Device Role / Timing Role: Dual-channel signal conditioner: one amp for loop-powered receiver, second for isolated voltage scaling. Use Value: Dual-channel matching minimizes inter-channel gain drift; 2.4V minimum supply supports brown-out tolerant operation. |
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 |
|---|---|---|---|
| AD8602ARMZ | Higher 10MHz GBWP but 1.2mA quiescent current; no guaranteed rail-to-rail output into 250Ω. | Better for higher-speed control loops; less suitable for ultra-low-power battery operation. | Select AD8602ARMZ only if bandwidth >5MHz is required and supply current budget allows ≥2× increase. |
| TSV912IDT | Lower 8MHz GBWP, 1.1mA IQ, rail-to-rail I/O, but only 40V/mV slew rate vs. MAX4326's 2V/µs. | Optimized for cost-sensitive consumer electronics; not specified for industrial temp range (-40°C to +85°C). | Choose TSV912IDT for commercial-grade portable devices where extended temperature operation is unnecessary. |
Compared with AD8602ARMZ and TSV912IDT, the MAX4326EUA-T uniquely balances 5MHz bandwidth, sub-1mA supply current, guaranteed rail-to-rail drive into 250Ω, and industrial temperature rating - making it optimal for precision, battery-constrained industrial and medical sensors.
Availability
MAX4326EUA-T is available at Aetrix Electronics and suitable for battery-powered data acquisition, portable medical instrumentation, and low-voltage sensor interface applications requiring stable component supply across extended temperature ranges and long 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 precision analog, mixed-signal, and power-management ICs for industrial, medical, and communications systems.
The MAX432x family was engineered specifically for low-voltage, rail-to-rail signal conditioning in portable and energy-constrained applications - emphasizing DC accuracy, speed, and supply efficiency without sacrificing robustness.
FAQ
What is the operating temperature range for the MAX4326EUA-T?
The MAX4326EUA-T is rated for operation from -40°C to +85°C, meeting industrial temperature requirements. This range is validated across all electrical specifications including input offset voltage (±6.0mV max), CMRR (54dB min), and supply current (1200µA max), ensuring reliable performance in harsh environments such as factory automation and outdoor sensor nodes.
Does the MAX4326EUA-T include a shutdown feature?
No, the MAX4326EUA-T does not incorporate a shutdown pin. Unlike the MAX4323 or MAX4327 variants, this device operates continuously when powered. For applications requiring power gating, external MOSFET switching of the VCC rail or use of a shutdown-capable alternative like MAX4327ESD is necessary - the MAX4326EUA-T itself has no SHDN terminal.
What package type is used for the MAX4326EUA-T?
The MAX4326EUA-T uses the 8-pin µMAX package (3.0mm × 3.0mm body, 0.8mm height), which is pin-compatible with standard SO-8 footprints. This thermally efficient, lead-free package supports reflow soldering and provides superior power dissipation versus SOT23 variants - critical for sustained dual-amplifier operation at elevated ambient temperatures.
Can the MAX4326EUA-T drive capacitive loads?
Yes, the MAX4326EUA-T is unity-gain stable and characterized for capacitive-load stability up to 500pF without external compensation. This allows direct connection to ADC input capacitors, long PCB traces, or piezoelectric sensors without oscillation risk - verified in Figure 4 and Figure 5 of the datasheet under 5V supply and 25°C conditions.
What is the typical input bias current of the MAX4326EUA-T?
The typical input bias current of the MAX4326EUA-T is ±50nA at +25°C, with a maximum of ±150nA across the full -40°C to +85°C range. This low bias current minimizes voltage errors in high-impedance sensor interfaces (e.g., pH electrodes or photodiode transimpedance stages), especially when combined with matched input impedances as recommended in Figures 1a and 1b of the datasheet.
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:
- Bulk
- 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-µMAX
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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