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Analog Devices Inc./Maxim Integrated MAX414CSD
- Part No.:
- MAX414CSD
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX414CSD.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,385
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Product details
Overview
MAX414CSD 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 consuming only 2.5mA per amplifier from ±2.4V to ±5V supplies. It is used in ultra-low-noise instrumentation amplifiers and bridge signal conditioning circuits requiring stable DC accuracy and wideband fidelity.
For engineers reviewing the MAX414CSD datasheet, MAX414CSD pinout, MAX414CSD application, or MAX414CSD equivalent, key selection criteria include its guaranteed low noise performance across temperature, rail-to-rail output swing into 2kΩ, and SO-14 package compatibility with space-constrained analog front-ends in test equipment and sensor interfaces.
Technical Context
The MAX414CSD employs a bipolar input stage optimized for minimum voltage noise without compromising input bias current or power consumption. Its design achieves unity-gain stability while maintaining 115dB minimum open-loop gain and 135dB channel separation at 1kHz - critical for multi-channel precision measurement systems where crosstalk must be minimized.
It operates over ±2.4V to ±5V dual supplies, enabling direct integration into legacy ±5V systems or low-power ±2.4V designs. Input common-mode range extends to within 0.3V of rails, and output swing reaches ±3.6V into 2kΩ, supporting full-scale signal handling in single-supply-derived configurations with appropriate level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage noise density | 2.4nV/√Hz max at 1kHz - enables sub-µV RMS noise in bandwidth-limited instrumentation paths |
| Unity-gain bandwidth | 28MHz - supports accurate amplification of signals up to ~4MHz (0.1% gain error) |
| Slew rate | 4.5V/µs - ensures distortion-free reproduction of 700kHz full-scale sine waves into 2kΩ |
| Supply current per amp | 2.5mA - allows four independent channels in <10mA total analog supply budget |
| Input offset voltage | ±320µV max - supports DC-coupled gain stages with <0.03% initial error at G=100 |
| CMRR | 115dB min - rejects >3M:1 common-mode interference in bridge amplifier topologies |
| PSRR | 96dB min - maintains accuracy despite ±100mV supply ripple at 1kHz |
Pinout & Package
The MAX414CSD is housed in a 14-pin SO (Small Outline) package with standard quad op-amp pinout conforming to industry layout conventions. The exposed pad variant is not used in this grade; thermal dissipation is managed via standard PCB copper area under the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 13 | Output | Amplifier outputs OUT1–OUT4; capable of ±3.6V swing into 2kΩ load |
| 2, 6, 10, 14 | Inverting input | IN1− through IN4−; differential input resistance 20kΩ, CM input range ±3.5V |
| 3, 7, 11, 12 | Non-inverting input | IN1+ through IN4+; common-mode rejection ratio ≥115dB at ±3.5V |
| 4 | Negative supply | V− connection for dual supply; must be tied to system negative rail (not ground) |
| 14 | Positive supply | V+ connection; accepts ±2.4V to ±5V; PSRR ≥96dB ensures immunity to supply noise |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise architecture | Bipolar input stage with 2.4nV/√Hz noise floor - avoids trade-off between noise and input bias current typical of JFET op-amps |
| Wide supply flexibility | Operates from ±2.4V to ±5V - supports both low-power portable systems and legacy ±5V industrial backplanes |
| High channel isolation | 135dB channel separation at 1kHz - prevents signal leakage between adjacent amplifiers in multi-sensor DAQ systems |
| Stable capacitive-load driving | Remains stable driving up to 3900pF in unity-gain configuration - eliminates need for external compensation in sensor cable interfaces |
| Guaranteed AC performance | 28MHz GBW and 4.5V/µs slew rate specified over full 0°C to +70°C range - enables consistent dynamic response across operating conditions |
Applications
| Low-Noise Frequency Synthesizers | Infrared Detectors |
|---|---|
Use Scenario: Amplifying low-level IF signals in phase-locked loop (PLL) feedback paths where phase noise directly impacts spectral purity. IC Role / Device Role / Timing Role: Low-noise transimpedance and buffer amplifier in VCO tuning and reference divider monitoring circuits. Use Value: 2.4nV/√Hz noise density minimizes added jitter; 28MHz bandwidth preserves loop dynamics without filtering-induced delay. |
Use Scenario: Conditioning weak photocurrent outputs from cooled HgCdTe or InSb infrared detector arrays in spectroscopy systems. IC Role / Device Role / Timing Role: Precision transimpedance amplifier with programmable gain and offset trimming capability. Use Value: Sub-µV input-referred noise enables detection of <10nA photocurrents; 115dB CMRR rejects thermally induced common-mode drift. |
| High-Quality Audio Amplifiers | Bridge Signal Conditioning |
Use Scenario: Implementing microphone preamplifiers and line drivers in professional audio interfaces requiring THD+N < -90dB. IC Role / Device Role / Timing Role: First-stage gain block with DC-coupled topology and matched quad architecture for stereo channel tracking. Use Value: 4.5V/µs slew rate supports 20kHz full-scale signals without slewing distortion; 135dB channel separation prevents L/R crosstalk. |
Use Scenario: Amplifying differential outputs from Wheatstone bridge strain gauges in structural health monitoring and load cells. IC Role / Device Role / Timing Role: Instrumentation-grade difference amplifier with laser-trimmed resistor network for precise gain matching. Use Value: ±320µV max offset voltage ensures <0.1% zero-error at G=100; 115dB CMRR rejects bridge excitation noise and EMI. |
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 |
|---|---|---|---|
| OP482ARZ | Higher 3.5nV/√Hz noise, lower 10MHz GBW, but superior 150µV max offset and rail-to-rail output | Better suited for low-voltage single-supply systems where output headroom is constrained | Select when rail-to-rail output swing is required and noise budget allows >3nV/√Hz |
| LT1499IS#PBF | Lower 1.9nV/√Hz noise, higher 10mA supply current per amp, and 10MHz GBW | Preferred in ultra-low-noise DC-coupled applications where power is secondary to noise floor | Select when absolute lowest voltage noise is critical and supply current >10mA per channel is acceptable |
Compared with OP482ARZ and LT1499IS#PBF, the MAX414CSD offers the best balance of low noise (2.4nV/√Hz), wide bandwidth (28MHz), and moderate quiescent current (2.5mA/amp), making it optimal for battery-powered or thermally constrained wideband instrumentation where both speed and noise matter.
Availability
MAX414CSD is available at Aetrix Electronics and suitable for low-noise instrumentation amplifiers, infrared detector front-ends, and bridge signal conditioning circuits requiring stable component supply across production lifecycles.
Supply support for MAX414CSD 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, wideband analog signal chains where low voltage noise, high gain accuracy, and supply flexibility are mandatory - targeting test & measurement, medical sensing, and optical detection systems.
FAQ
What is the maximum capacitive load the MAX414CSD can drive stably in unity-gain configuration?
The MAX414CSD remains stable driving up to 3900pF in unity-gain follower configuration, as verified in the Typical Operating Characteristics section of the 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 and prevent oscillation. This behavior is consistent across all four amplifiers in the MAX414CSD package.
Does the MAX414CSD support single-supply operation?
Yes, the MAX414CSD supports single-supply operation with total supply voltages as low as 4.8V. Its input common-mode range extends to within 0.3V of the rails, and output swing reaches within 1.4V of each rail into 2kΩ. For proper DC biasing, the non-inverting inputs must be referenced to a mid-supply voltage - the MAX414CSD itself does not include internal level-shifting circuitry.
What is the guaranteed input offset voltage specification for MAX414CSD over its operating temperature range?
The MAX414CSD guarantees a maximum input offset voltage of ±320µV at +25°C and ±450µV over the full 0°C to +70°C operating temperature range. Its offset voltage tempco is ±1µV/°C, meaning worst-case drift across the range contributes ≤70µV - well within the ±450µV limit. This is confirmed in the Electrical Characteristics tables for the "C" grade (0°C to +70°C).
Is the MAX414CSD pin-compatible with other quad op-amps in SO-14 packages?
The MAX414CSD uses the industry-standard quad op-amp pinout for SO-14 packages (pin 1 = OUT1, pin 2 = IN1−, pin 3 = IN1+, etc.), matching devices like the LM324, TL084, and AD8604. However, electrical characteristics - especially noise, bandwidth, and supply current - differ significantly. Direct replacement requires validation of signal chain performance, particularly in noise-sensitive or high-speed applications.
How does the MAX414CSD achieve low noise without using input current-limiting resistors?
The MAX414CSD omits input current-limiting resistors to preserve low voltage-noise performance - a deliberate design choice that differentiates it from many general-purpose op-amps. Instead, it relies on back-to-back clamp diodes for ±0.1V differential input protection. External series resistors must be added if differential inputs exceed ±1.0V, limiting current to <20mA per the Absolute Maximum Ratings table - a requirement explicitly stated in Note 1 of the datasheet for the MAX414CSD.
MAX414CSD 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MAX414CSD FAQ
1.How can I place an order for MAX414CSD through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX414CSD 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 MAX414CSD reliable?
The price and inventory of MAX414CSD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX414CSD is usually 5 days.
3.What payment methods are accepted for MAX414CSD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX414CSD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX414CSD?
MAX414CSD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX414CSD 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 MAX414CSD?
For technical support, including MAX414CSD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX414CSD requirements.
6.How does Aetrix verify that MAX414CSD is sourced from the original manufacturer or authorized distributors?
All MAX414CSD 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 MAX414CSD meets industry standards.
7.What is the process for return or replacement of MAX414CSD?
All MAX414CSD units undergo pre-shipment inspection (PSI). If there is an issue with MAX414CSD, 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 MAX414CSD part is unused and in its original packaging.
Return procedure for MAX414CSD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX414CSD Tags
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