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Analog Devices Inc./Maxim Integrated MAX414ESD
- Part No.:
- MAX414ESD
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX414ESD.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,510
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Product details
Overview
MAX414ESD from Maxim Integrated is a quad, precision, low-noise operational amplifier optimized for high-speed, low-voltage systems. It delivers 2.4nV/√Hz input voltage-noise density at 1kHz, 28MHz unity-gain bandwidth, and 4.5V/µs slew rate while operating from ±2.4V to ±5V supplies. It is specified for industrial temperature range (–40°C to +85°C) and housed in a 14-pin SO package - ideal for ultra-low-noise instrumentation amplifiers and infrared detector front-ends.
For engineers reviewing the MAX414ESD datasheet, MAX414ESD pinout, MAX414ESD application, or MAX414ESD equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation insights, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The MAX414ESD employs a bipolar input stage engineered to minimize voltage noise without compromising DC accuracy or AC stability - achieving <2.4nV/√Hz at 1kHz while maintaining ±250µV max offset voltage and 115dB min open-loop gain. Its architecture supports stable unity-gain operation and drives capacitive loads up to 3900pF in voltage-follower configuration.
It operates across ±2.4V to ±5V supply rails with 2.5mA per amplifier supply current, enabling low-power, wide-dynamic-range signal conditioning. Input common-mode range extends to ±3.5V, and output swing reaches ±3.6V into 2kΩ - ensuring full-rail utilization in precision analog measurement paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage Noise Density | 2.4nV/√Hz (max) at 1kHz - enables sub-µV-level signal resolution in low-amplitude sensor interfaces. |
| Unity-Gain Bandwidth | 28MHz - supports wideband signal acquisition up to ~10MHz with minimal phase distortion. |
| Slew Rate | 4.5V/µs - ensures faithful reproduction of fast transients in audio and pulse-conditioning applications. |
| Supply Current | 2.5mA per amplifier - allows four-channel operation within 10mA total, suitable for space-constrained embedded systems. |
| Input Offset Voltage | ±320µV (max) over –40°C to +85°C - maintains DC accuracy in bridge-based strain gauge and thermopile amplifiers. |
| Common-Mode Rejection | 115dB (min) - rejects interference in high-gain differential measurement circuits with unbalanced source impedances. |
| Operating Supply Range | ±2.4V to ±5V - supports dual-supply flexibility and compatibility with legacy ±5V data-acquisition systems. |
Pinout & Package
MAX414ESD is supplied in a 14-pin SO (Small Outline) package with standard quad op-amp pinout. The exposed pad variant is not used in this grade; thermal performance is managed via standard PCB copper pour connected to V−.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Output of first amplifier channel - directly drives downstream ADC drivers or active filters. |
| 2 | IN1− | Inverting input of first amplifier - connects to feedback network or differential sensing node. |
| 3 | IN1+ | Noninverting input of first amplifier - accepts low-impedance reference or sensor signal. |
| 4 | V− | Negative supply rail - must be decoupled locally with 0.1µF ceramic capacitor. |
| 5 | V+ | Positive supply rail - shared by all four amplifiers; requires independent 0.1µF bypass. |
| 6 | IN2+ | Noninverting input of second amplifier - used for matched-pair configurations in instrumentation topologies. |
| 7 | IN2− | Inverting input of second amplifier - paired with Pin 6 for differential gain stages. |
| 8 | OUT2 | Output of second amplifier - supports dual-channel signal processing without cross-talk (135dB channel separation). |
| 9 | OUT3 | Output of third amplifier - enables three-stage cascaded filtering or multi-path signal conditioning. |
| 10 | IN3− | Inverting input of third amplifier - referenced to same V+ and V− as other channels for rail-to-rail consistency. |
| 11 | IN3+ | Noninverting input of third amplifier - configurable as buffer, integrator, or summing junction. |
| 12 | IN4+ | Noninverting input of fourth amplifier - supports independent biasing or reference buffering. |
| 13 | IN4− | Inverting input of fourth amplifier - used for active offset cancellation or precision current sensing. |
| 14 | OUT4 | Output of fourth amplifier - completes quad-channel capability for simultaneous multi-sensor readout. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low voltage noise | 2.4nV/√Hz max at 1kHz - critical for preserving SNR in IR detector and piezoelectric sensor front-ends. |
| Quad-channel integration | Four fully independent amplifiers in one 14-pin SO - reduces board area and inter-channel mismatch vs. discrete solutions. |
| Capacitive-load stability | Stable driving up to 3900pF in unity-gain mode - eliminates need for external isolation resistors in many sensor interface designs. |
| Low-voltage bipolar operation | Functional down to ±2.4V supplies - enables compatibility with modern low-power µP I/O domains while retaining bipolar precision. |
| High CMRR & PSRR | 115dB min CMRR, 96dB min PSRR - suppresses power rail noise and ground bounce in mixed-signal PCB layouts. |
Applications
| Low-Noise Frequency Synthesizers | Infrared Detectors |
|---|---|
Use Scenario: Amplifying low-level IF signals in PLL-based synthesizer loop filters where phase noise floor must remain below –160dBc/Hz. IC Role / Device Role / Timing Role: Low-noise op-amp in active loop filter topology, setting closed-loop bandwidth and suppressing reference spurs. Use Value: 2.4nV/√Hz noise density prevents degradation of oscillator phase noise; 28MHz GBW ensures clean filter response up to 10MHz. |
Use Scenario: Conditioning weak photocurrent outputs from cooled HgCdTe or InSb infrared detectors operating at cryogenic temperatures. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) front-end with matched feedback resistors for differential photodiode pairs. Use Value: Bipolar input stage delivers optimal noise performance at low source impedances (<1kΩ); 135dB channel separation avoids crosstalk between dual-wavelength channels. |
| High-Quality Audio Amplifiers | Ultra Low-Noise Instrumentation Amplifiers |
Use Scenario: Building line-level preamplifier stages in studio-grade audio interfaces requiring THD+N < –90dB at 1kHz. IC Role / Device Role / Timing Role: Gain stage in balanced input buffer or active crossover network with precise resistor matching. Use Value: 4.5V/µs slew rate prevents slew-induced distortion on 20kHz sine waves; ±320µV max offset avoids audible DC pop during mute/unmute transitions. |
Use Scenario: Constructing 3-op-amp instrumentation amplifier for medical ECG or industrial strain gauge bridges with <1µV offset drift. IC Role / Device Role / Timing Role: Dual-amplifier core (A1/A2) plus output stage (A3) - all sourced from same MAX414ESD die for tracking. Use Value: Matched offset tempco (±1µV/°C) and gain drift across channels minimizes common-mode error; 115dB CMRR rejects 60Hz pickup in unshielded environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad, low-noise op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP484ESZ | Higher supply current (4.5mA/amplifier), wider supply range (±4V to ±18V), lower noise (1.9nV/√Hz), but slower slew rate (2.5V/µs). | Better suited for high-voltage, ultra-low-noise applications (e.g., photomultiplier readout); less optimal for low-power, high-slew-rate needs. | Select OP484ESZ when absolute lowest noise dominates and supply headroom exceeds ±5V; avoid if 4.5V/µs slew or <2.5mA/channel is required. |
| LT1499IS#PBF | Lower noise (1.7nV/√Hz), higher GBW (37MHz), but higher offset (±500µV max) and no guaranteed 2.5mA supply current spec. | Preferred for wideband, low-noise applications where DC precision is secondary (e.g., RF IF amps); less suitable for precision DC-coupled bridges. | Choose LT1499IS#PBF for bandwidth-critical, AC-coupled signal chains; retain MAX414ESD where offset voltage and supply efficiency are design constraints. |
Compared with OP484ESZ and LT1499IS#PBF, MAX414ESD uniquely balances 2.4nV/√Hz noise, 4.5V/µs slew, and 2.5mA/channel supply current in a single 14-pin SO package - making it the only option meeting all three criteria simultaneously for industrial-grade low-noise instrumentation.
Availability
MAX414ESD is available at Aetrix Electronics and suitable for low-noise instrumentation amplifiers, infrared detector signal chains, high-fidelity audio preamplifiers, and frequency synthesizer loop filters requiring stable component supply across extended temperature ranges.
Supply support for MAX414ESD 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 MAX410/MAX412/MAX414 family was designed specifically for precision, low-noise, wideband signal conditioning in resource-constrained environments - targeting applications where noise, speed, and supply efficiency must coexist without compromise.
FAQ
What is the maximum capacitive load the MAX414ESD can drive stably in unity-gain configuration?
The MAX414ESD remains stable when driving up to 3900pF in voltage-follower (unity-gain) configuration, as verified in the Typical Operating Characteristics section of its datasheet. For loads exceeding this value, an output isolation resistor (e.g., 10Ω) must be added between the amplifier output and the capacitive load to restore phase margin - a technique validated in Figures 6a, 6b, and 7a of the MAX414ESD datasheet.
Does the MAX414ESD support single-supply operation?
Yes, the MAX414ESD supports single-supply operation with total supply voltages as low as 4.8V. Its input common-mode range extends from V− + 1.5V to V+ − 1.5V, and output swing reaches V− + 1.3V to V+ − 1.4V (with 2kΩ load), enabling use in 5V or 3.3V-referenced systems when biased appropriately - though full bipolar performance is guaranteed only with ±2.4V to ±5V dual supplies.
What is the guaranteed input offset voltage specification for MAX414ESD over temperature?
The MAX414ESD guarantees a maximum input offset voltage of ±450µV over the full industrial temperature range of –40°C to +85°C, as stated in the Electrical Characteristics table under "TA = –40°C to +85°C" conditions. This includes both initial offset and drift, with a typical tempco of ±1µV/°C contributing to predictable, bounded error accumulation.
Is the MAX414ESD pin-compatible with other members of the MAX41x family?
No - the MAX414ESD (quad, 14-pin SO) is not pin-compatible with the MAX410 (single, 8-pin) or MAX412 (dual, 8-pin). However, it shares identical pin functions per channel with other 14-pin quad variants like MAX414EPD and MAX414BESD, differing only in temperature grade and internal trimming (e.g., B-grade offers tighter offset specs).
How does the MAX414ESD achieve low noise without input current-limiting resistors?
The MAX414ESD omits input current-limiting resistors - which degrade noise performance - and instead uses back-to-back clamp diodes for ±0.1V differential input protection. To handle larger differential voltages, external series resistors must be added to limit input current to <20mA, preserving the device's 2.4nV/√Hz noise advantage while enabling safe operation in high-transient environments.
MAX414ESD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 4.5V/µs
- Gain Bandwidth Product:
- 28 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 80 nA
- Voltage - Input Offset:
- 150 µV
- Current - Supply:
- 2.5mA (x4 Channels)
- Current - Output / Channel:
- 35 mA
- Voltage - Supply Span (Min):
- 4.8 V
- Voltage - Supply Span (Max):
- 10.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MAX414ESD FAQ
1.How can I place an order for MAX414ESD through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX414ESD 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 MAX414ESD reliable?
The price and inventory of MAX414ESD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX414ESD is usually 5 days.
3.What payment methods are accepted for MAX414ESD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX414ESD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX414ESD?
MAX414ESD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX414ESD 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 MAX414ESD?
For technical support, including MAX414ESD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX414ESD requirements.
6.How does Aetrix verify that MAX414ESD is sourced from the original manufacturer or authorized distributors?
All MAX414ESD 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 MAX414ESD meets industry standards.
7.What is the process for return or replacement of MAX414ESD?
All MAX414ESD units undergo pre-shipment inspection (PSI). If there is an issue with MAX414ESD, 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 MAX414ESD part is unused and in its original packaging.
Return procedure for MAX414ESD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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