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Analog Devices Inc./Maxim Integrated MAX4334ESD+T
- Part No.:
- MAX4334ESD+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4334ESD+T.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,660
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Product details
Overview
MAX4334ESD+T from Maxim Integrated is a quad, low-power, rail-to-rail input/output operational amplifier optimized for single-supply, low-voltage signal conditioning. It delivers 3MHz gain-bandwidth, 245µA per amplifier quiescent current, ±0.25mV typical input offset voltage, rail-to-rail output swing within 125mV of rails (at 2kΩ load), and operates from +2.3V to +6.5V. It is used in portable data-acquisition front-ends where precision, low power, and wide common-mode range are critical.
For engineers reviewing the MAX4334ESD+T datasheet, MAX4334ESD+T pinout, MAX4334ESD+T application, or MAX4334ESD+T equivalent, key selection criteria include shutdown capability (not present in this variant), quad-channel integration in SO-14, rail-to-rail I/O performance at 2.3V min supply, and verified 2kΩ drive strength with <125mV rail margin - all validated across –40°C to +85°C.
Technical Context
The MAX4334ESD+T implements a dual-stage rail-to-rail input architecture using complementary NPN/PNP differential pairs, enabling common-mode voltage operation from VEE – 0.25V to VCC + 0.25V. Its output stage uses Class AB topology capable of sourcing/sinking ≥20mA into 2kΩ loads while maintaining rail-to-rail swing.
This quad op amp lacks integrated shutdown control (unlike MAX4331/MAX4333), and its SO-14 package supports four independent amplifiers with shared VCC/VEE pins and no dedicated SHDN lines. It is unity-gain stable and exhibits no phase reversal under overdriven inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 3MHz - supports stable closed-loop operation up to ~300kHz at AV = 10, suitable for anti-aliasing and sensor buffering. |
| Quiescent Current per Amp | 245µA (typ) - enables battery-powered operation >1 year on a CR2032 cell when driving high-impedance loads. |
| Input Offset Voltage | ±0.25mV (max, –40°C to +85°C) - ensures ≤0.5LSB error in 12-bit systems with 2V full-scale range. |
| Output Swing (2kΩ load) | VCC – 125mV / VEE + 125mV (typ) - preserves dynamic range in 3.3V or 2.5V systems without level-shifting circuitry. |
| Common-Mode Input Range | VEE – 0.25V to VCC + 0.25V - accepts signals beyond supply rails, simplifying interfacing with external sensors or DACs. |
| Supply Voltage Range | +2.3V to +6.5V single supply - compatible with Li-ion, 3-cell alkaline, and regulated 3.3V/5V rails. |
| Large-Signal Voltage Gain | 75dB (min, –40°C to +85°C) - provides ≥180V/V open-loop gain for accurate closed-loop gain setting with <0.1% error. |
Pinout & Package
MAX4334ESD+T is housed in a 14-pin SO (Small Outline) package with standard JEDEC MS-012AC dimensions (8.65mm × 3.90mm × 1.75mm). Pin 1 is marked with a dot; pin numbering follows counterclockwise convention from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 8, 13 | OUT1, OUT2, OUT3, OUT4 | Amplifier outputs - each drives independently; high-impedance state only via external disable (no internal shutdown). |
| 2, 6, 9, 12 | IN1–, IN2–, IN3–, IN4– | Inverting inputs - matched impedance required to minimize bias-current-induced offset errors. |
| 3, 7, 10, 14 | IN1+, IN2+, IN3+, IN4+ | Noninverting inputs - accept rail-to-rail common-mode signals; protected by 1kΩ series resistors and diode clamps. |
| 4 | VEE | Negative supply / ground reference - substrate tied internally; must be connected to system ground in single-supply use. |
| 11 | VCC | Positive supply - requires local 0.1µF ceramic bypass capacitor to VEE for stability and noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal | Prevents output latch-up during input overdrive - eliminates need for external clamping in sensor front-ends. |
| Rail-to-rail output swing | Delivers full dynamic range at low supply voltages (e.g., 2.3V), maximizing SNR in battery-constrained designs. |
| Unity-gain stable | Enables direct use in voltage-follower configurations without external compensation components. |
| Capacitive load stability | Remains stable with up to 150pF load - supports direct connection to ADC input capacitors or long PCB traces. |
| Low input bias current | ±1nA (max, –40°C to +85°C) - minimizes voltage drop across high-impedance sensor networks (e.g., pH electrodes). |
Applications
| Portable ECG Monitor Front-End | Industrial 4–20mA Loop Receiver |
|---|---|
Use Scenario: Amplifies microvolt-level biopotential signals from dry electrodes in ultra-low-power wearable ECG devices. IC Role / Device Role / Timing Role: Quad configuration buffers four lead channels simultaneously; rail-to-rail I/O captures full electrode swing without clipping at 3.3V supply. Use Value: 245µA per amp enables >2-week battery life on coin cell; ±0.25mV offset ensures baseline stability across body temperature variations. |
Use Scenario: Converts 4–20mA loop current to precise 0–5V analog voltage for PLC analog input modules. IC Role / Device Role / Timing Role: One amplifier serves as precision I-to-V converter; others condition and filter the resulting voltage before ADC sampling. Use Value: Rail-to-rail output swing guarantees full 0–5V range utilization; 3MHz GBW supports fast transient response to loop faults. |
| Handheld Multimeter Signal Chain | Low-Power Gas Sensor Interface |
Use Scenario: Buffers high-impedance thermistor and RTD bridges in battery-operated handheld DMMs with autoranging. IC Role / Device Role / Timing Role: Provides gain, filtering, and level-shifting stages; quad layout minimizes board space and matching drift between channels. Use Value: ±0.25mV offset and 75dB open-loop gain ensure ≤0.1% measurement accuracy across 4½-digit resolution. |
Use Scenario: Interfaces electrochemical gas sensors (e.g., CO, NO₂) requiring low-noise, low-drift amplification at sub-100µA supply currents. IC Role / Device Role / Timing Role: Configured as transimpedance amplifier for current-output sensors; rail-to-rail input accommodates varying sensor bias points. Use Value: 2.3V minimum supply allows direct use with energy-harvesting power sources; 28nV/√Hz input noise preserves weak sensor signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464IDR | Higher quiescent current (550µA/amp), lower GBW (6.4MHz), no rail-to-rail input (CMVR = VSS to VDD – 1.5V). | Suitable for higher-speed, non-rail-to-rail applications where supply headroom permits. | Select TLV2464IDR only if speed >3MHz is required and input common-mode range beyond rails is unnecessary. |
| AD8604ARUZ | Lower quiescent current (240µA/amp), same GBW (8MHz), rail-to-rail I/O, but higher offset (±600µV max) and no guaranteed 2.3V operation. | Better for precision DC-coupled apps above 2.7V supply; less robust at ultra-low voltage. | Choose AD8604ARUZ when offset drift or noise dominates over supply flexibility; avoid below 2.7V. |
Compared with MAX4334ESD+T, TLV2464IDR trades rail-to-rail input capability for higher bandwidth and AD8604ARUZ offers lower noise but sacrifices guaranteed sub-2.7V operation and tighter offset spec - making MAX4334ESD+T optimal for battery-powered, wide-input-range, low-voltage precision signal chains.
Availability
MAX4334ESD+T is available at Aetrix Electronics and suitable for portable medical instrumentation, industrial loop receivers, handheld test equipment, and low-power environmental sensor interfaces requiring stable component supply across extended temperature ranges.
Supply support for MAX4334ESD+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 signal-conditioning in portable and precision data-acquisition systems - emphasizing rail-to-rail operation, micropower efficiency, and robust input protection.
FAQ
Does MAX4334ESD+T include a shutdown feature?
No, MAX4334ESD+T does not integrate a shutdown function. Unlike MAX4331/MAX4333 variants, it lacks SHDN pins and remains active whenever powered. To achieve low-power standby, external power gating or supply sequencing must be implemented. The MAX4334ESD+T datasheet confirms no shutdown-related specifications (e.g., ICC(SHDN), tSHDN) are defined for this part.
What is the maximum capacitive load MAX4334ESD+T can drive stably?
MAX4334ESD+T is stable driving up to 150pF capacitive load with appropriate resistive termination (e.g., 10kΩ to mid-supply), as confirmed in the Capacitive Load Stability graph (Figure TOC21) of the official datasheet. Driving >150pF without isolation resistance risks peaking or oscillation due to phase margin degradation.
Can MAX4334ESD+T operate from a 2.0V supply?
While the absolute minimum specified supply is +2.3V, the MAX4334ESD+T typically functions down to +2.0V per the datasheet's "Typical Operating Characteristics" section (Figure TOC18). However, parameters like GBW, CMRR, and output swing degrade below 2.3V, and full specification compliance is not guaranteed at 2.0V.
Is MAX4334ESD+T pin-compatible with other MAX433x variants in SO-14?
No - MAX4334ESD+T (quad, no shutdown) uses a unique SO-14 pinout distinct from dual-amplifier variants like MAX4332ESA (SO-8) or MAX4333ESD (SO-14 with SHDN1/SHDN2). Its SO-14 layout dedicates pins 1/5/8/13 to outputs and has no shutdown terminals, making it incompatible with pin-for-pin replacement of any other MAX433x SO-packaged part.
What is the input protection scheme on MAX4334ESD+T?
MAX4334ESD+T features internal 1kΩ series resistors on both inputs plus back-to-back triple-diode stacks across IN+/IN–, limiting differential input fault current and clamping voltages to safe levels. This protects against ±10V transient overvoltage events and prevents latch-up during sensor disconnection or hot-plug scenarios.
MAX4334ESD+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- 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:
- 250 µV
- Current - Supply:
- 275µA (x4 Channels)
- 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:
- 14-SOIC
MAX4334ESD+T FAQ
1.How can I place an order for MAX4334ESD+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4334ESD+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 MAX4334ESD+T reliable?
The price and inventory of MAX4334ESD+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4334ESD+T is usually 5 days.
3.What payment methods are accepted for MAX4334ESD+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4334ESD+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4334ESD+T?
MAX4334ESD+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4334ESD+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 MAX4334ESD+T?
For technical support, including MAX4334ESD+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4334ESD+T requirements.
6.How does Aetrix verify that MAX4334ESD+T is sourced from the original manufacturer or authorized distributors?
All MAX4334ESD+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 MAX4334ESD+T meets industry standards.
7.What is the process for return or replacement of MAX4334ESD+T?
All MAX4334ESD+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4334ESD+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 MAX4334ESD+T part is unused and in its original packaging.
Return procedure for MAX4334ESD+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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