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Analog Devices Inc./Maxim Integrated MAX414BCSD
- Part No.:
- MAX414BCSD
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX414BCSD.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,828
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Product details
Overview
The MAX414BCSD 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 0°C to +70°C operation and housed in a 14-pin SO package - ideal for ultra-low-noise instrumentation amplifiers and bridge signal conditioning circuits.
For engineers reviewing the MAX414BCSD datasheet, MAX414BCSD pinout, MAX414BCSD application, or MAX414BCSD equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The MAX414BCSD uses 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 input offset voltage and 115dB min open-loop gain. Its 28MHz bandwidth and 4.5V/µs slew rate support wideband measurement and frequency synthesis applications requiring fast settling and low distortion.
It operates across ±2.4V to ±5V supplies with 2.5mA per amplifier supply current, enabling low-power, high-fidelity signal conditioning in dual- or single-supply configurations. Input protection relies on back-to-back clamp diodes (no series resistors), preserving low-noise performance but requiring external current limiting for differential inputs >±1.0V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage Noise Density | 2.4nV/√Hz (max) at 1kHz - enables sub-µV-level resolution in precision sensor front-ends |
| Unity-Gain Bandwidth | 28MHz - supports stable closed-loop operation up to ~20MHz with gain ≥2 |
| Slew Rate | 4.5V/µs - ensures ≤1.3µs settling to 0.1% for 7V step inputs, critical for pulse fidelity |
| Input Offset Voltage | ±320µV (max) - allows DC-coupled bridge measurements with <0.03% error at 1V full-scale |
| Supply Current | 2.5mA per amplifier - enables quad-channel low-noise amplification within 10mA total budget |
| CMRR | 115dB (min) - rejects >3M:1 common-mode interference in unshielded industrial environments |
| Operating Supply | ±2.4V to ±5V - compatible with legacy ±5V rails and modern low-voltage analog subsystems |
Pinout & Package
The MAX414BCSD 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 dissipation is managed via PCB copper area under pins 4 (V−) and 11 (V+).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Output of amplifier channel 1 - drives 2kΩ load to ±3.6V swing with ±5V supplies |
| 2 | IN1− | Inverting input of channel 1 - accepts common-mode voltage from (V− − 0.3V) to (V+ + 0.3V) |
| 3 | IN1+ | Noninverting input of channel 1 - matched impedance to IN1− for optimal CMRR |
| 4 | V− | Negative supply rail - must be connected directly to low-impedance ground plane for noise control |
| 5 | IN2+ | Noninverting input of channel 2 - electrically isolated from other channels (135dB channel separation @1kHz) |
| 6 | IN2− | Inverting input of channel 2 - shares same noise and offset characteristics as IN1− |
| 7 | OUT2 | Output of amplifier channel 2 - independent output stage, no crosstalk to OUT1/OUT3/OUT4 |
| 8 | OUT3 | Output of amplifier channel 3 - identical AC/DC specs to OUT1 and OUT2 |
| 9 | IN3− | Inverting input of channel 3 - pin-compatible with industry-standard quad op amp layouts |
| 10 | IN3+ | Noninverting input of channel 3 - supports differential input configurations with matched trace routing |
| 11 | V+ | Positive supply rail - decoupling capacitor (0.1µF) required within 5mm of pin for stability |
| 12 | IN4+ | Noninverting input of channel 4 - enables four independent low-noise gain stages on one IC |
| 13 | IN4− | Inverting input of channel 4 - supports active filtering or transimpedance configurations |
| 14 | OUT4 | Output of amplifier channel 4 - capable of sourcing/sinking 35mA short-circuit current |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low voltage noise | 2.4nV/√Hz max at 1kHz - preserves SNR in high-gain sensor interfaces where source impedance <200Ω |
| Wide supply range | ±2.4V to ±5V - eliminates need for dedicated ±5V regulators in mixed-signal systems |
| Quad-channel isolation | 135dB channel separation @1kHz - prevents inter-channel coupling in multi-sensor data acquisition |
| Capacitive load drive | Stable with 3900pF in unity-gain follower - reduces need for external isolation resistors in ADC driver designs |
| Low offset drift | ±1µV/°C tempco - maintains calibration integrity over 0°C to +70°C industrial temperature range |
Applications
| Low-Noise Frequency Synthesizers | Infrared Detectors |
|---|---|
Use Scenario: Amplifying low-amplitude IF signals in PLL-based synthesizer loops where phase noise must be minimized. IC Role / Device Role / Timing Role: Low-noise voltage amplifier in loop filter and VCO control path - directly impacts integrated phase jitter. Use Value: 2.4nV/√Hz noise floor prevents degradation of synthesizer close-in phase noise; 28MHz GBW supports fast lock times. |
Use Scenario: Conditioning weak photocurrent outputs from cooled HgCdTe or InSb infrared detectors. IC Role / Device Role / Timing Role: Transimpedance amplifier front-end - converts pA-level detector current to clean voltage signal. Use Value: Bipolar input stage enables low input bias current (<150nA) while maintaining sub-3nV/√Hz noise - essential for high-impedance IR sensors. |
| High-Quality Audio Amplifiers | Bridge Signal Conditioning |
Use Scenario: Implementing RIAA equalization and phono preamplification in high-end audio equipment. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage - handles 20Hz–20kHz audio band with minimal THD+N. Use Value: 115dB PSRR and CMRR suppress power supply and ground noise; 4.5V/µs slew rate avoids slew-induced distortion at 10Vpp. |
Use Scenario: Amplifying differential output from Wheatstone bridge strain gauges in load cells and pressure sensors. IC Role / Device Role / Timing Role: Instrumentation-grade difference amplifier - rejects common-mode bridge excitation noise. Use Value: 115dB CMRR ensures <0.003% error from 5V bridge excitation; quad configuration allows simultaneous processing of multiple bridges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad, low-noise, precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP482ARZ | Higher noise (3.5nV/√Hz), lower bandwidth (10MHz), but superior offset drift (0.2µV/°C) | Better for DC-precision applications below 5MHz; less suitable for wideband frequency synthesis | Select when long-term DC stability outweighs wideband noise performance |
| LT1499IS#PBF | Lower noise (1.9nV/√Hz), higher supply current (3.5mA/amplifier), no guaranteed 28MHz GBW | Superior noise in ultra-low-source-impedance circuits; requires tighter thermal management | Select when absolute lowest voltage noise is critical and bandwidth can be relaxed to 20MHz |
Compared with OP482ARZ and LT1499IS#PBF, the MAX414BCSD offers the best balance of bandwidth, noise, and supply efficiency for 0°C to +70°C instrumentation - delivering 28MHz GBW at 2.5mA per amplifier and 2.4nV/√Hz noise, whereas alternatives trade bandwidth for drift or noise at higher current cost.
Availability
MAX414BCSD is available at Aetrix Electronics and suitable for low-noise instrumentation amplifiers, infrared detector front-ends, high-fidelity audio preamplifiers, and bridge-based sensor signal conditioning requiring stable component supply across industrial and test equipment programs.
Supply support for MAX414BCSD 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 signal conditioning in high-speed, low-voltage systems - targeting applications where voltage noise, bandwidth, and supply flexibility are co-critical.
FAQ
What is the maximum capacitive load the MAX414BCSD can drive stably in unity-gain configuration?
The MAX414BCSD remains stable driving up to 3900pF in unity-gain follower configuration, as verified in the Typical Operating Characteristics. For loads exceeding this value - such as 0.015µF - an output isolation resistor (e.g., 10Ω) must be added between the amplifier output and the load capacitance to restore phase margin and prevent oscillation. This behavior is consistent across all four channels of the MAX414BCSD.
Does the MAX414BCSD require external offset nulling components?
No, the MAX414BCSD does not include internal offset null pins and is not designed for external trimming. Its input offset voltage is factory trimmed to ±320µV (max) over 0°C to +70°C, and its ±1µV/°C tempco ensures minimal drift across the rated temperature range. Unlike the MAX410, the MAX414BCSD omits null terminals to maintain compact 14-pin SO packaging and quad channel density.
Can the MAX414BCSD operate from a single +5V supply?
Yes, the MAX414BCSD supports single-supply operation down to +4.8V total supply (e.g., V+ = +4.8V, V− = 0V). However, input common-mode range is limited to V− + 1.5V to V+ − 1.5V, and output swing is reduced to approximately +3.4V to −0.1V into 2kΩ. For rail-to-rail input/output performance, a different amplifier family should be selected - the MAX414BCSD is optimized for split-supply precision, not single-supply convenience.
How does the MAX414BCSD's noise performance compare between 10Hz and 1kHz?
At 10Hz, the MAX414BCSD exhibits higher 1/f noise - approximately 7nV/√Hz - due to its bipolar input architecture. At 1kHz, voltage noise drops to the specified 2.4nV/√Hz (max), representing its broadband noise floor. The 1/f corner frequency is 90Hz, meaning noise above ~1kHz is dominated by white noise. This makes the MAX414BCSD especially effective in applications where signal bandwidth starts above 100Hz, such as audio and IF amplification.
Is the MAX414BCSD pin-compatible with other quad op amps in 14-pin SO packages?
Yes, the MAX414BCSD uses the industry-standard 14-pin SO quad op amp pinout (pin 1 = OUT1, pin 2 = IN1−, ..., pin 14 = OUT4), matching pin-for-pin layouts of LM324, TL084, and AD824 families. However, electrical behavior differs significantly - including supply range (±2.4V to ±5V vs. wider ranges), noise, and bandwidth - so direct substitution requires validation of signal chain requirements, especially regarding noise, speed, and DC accuracy.
MAX414BCSD 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
MAX414BCSD FAQ
1.How can I place an order for MAX414BCSD through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX414BCSD 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 MAX414BCSD reliable?
The price and inventory of MAX414BCSD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX414BCSD is usually 5 days.
3.What payment methods are accepted for MAX414BCSD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX414BCSD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX414BCSD?
MAX414BCSD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX414BCSD 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 MAX414BCSD?
For technical support, including MAX414BCSD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX414BCSD requirements.
6.How does Aetrix verify that MAX414BCSD is sourced from the original manufacturer or authorized distributors?
All MAX414BCSD 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 MAX414BCSD meets industry standards.
7.What is the process for return or replacement of MAX414BCSD?
All MAX414BCSD units undergo pre-shipment inspection (PSI). If there is an issue with MAX414BCSD, 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 MAX414BCSD part is unused and in its original packaging.
Return procedure for MAX414BCSD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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