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Analog Devices Inc./Maxim Integrated MAX414EPD+
- Part No.:
- MAX414EPD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX414EPD+.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,529
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Product details
Overview
The MAX414EPD+ 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 -40°C to +85°C and housed in a 14-pin plastic DIP package - ideal for ultra-low-noise instrumentation amplifiers and bridge signal conditioning.
For engineers reviewing the MAX414EPD+ datasheet, MAX414EPD+ pinout, MAX414EPD+ application, or MAX414EPD+ 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 MAX414EPD+ 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 ±200µV max input offset voltage over temperature. Its 28MHz gain-bandwidth product and 4.5V/µs slew rate support wideband closed-loop gains up to 1000 with stable transient response.
It features rail-to-rail output swing (±3.5V into 2kΩ from ±5V), 115dB min open-loop gain, and 105–120dB CMRR across its full -40°C to +85°C operating range. Input protection consists solely of back-to-back clamp diodes (no series resistors), preserving low-noise integrity but requiring external current limiting for differential inputs >±0.1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage Noise Density | 2.4nV/√Hz (max) at 1kHz - enables sub-µV RMS noise in precision sensor front-ends with source impedances <200Ω |
| Unity-Gain Bandwidth | 28MHz - supports stable closed-loop operation up to ~20MHz with gain ≥2, suitable for fast data acquisition and active filtering |
| Slew Rate | 4.5V/µs - ensures ≤1.3µs settling to 0.1% for 7VP-P output steps, critical for pulse-amplifier and DAC buffer applications |
| Supply Voltage Range | ±2.4V to ±5.25V - allows dual-supply operation down to ±2.4V or single-supply use with ≥4.8V total, easing integration in portable/battery-powered systems |
| Input Offset Voltage | ±200µV (max) over -40°C to +85°C - guarantees ≤0.2mV error in 10V full-scale instrumentation amplifiers without trimming |
| CMRR / PSRR | 105dB / 90dB (min) over temp - rejects common-mode interference and supply ripple in noisy industrial environments |
| Output Swing | ±3.5V into 2kΩ from ±5V - delivers 7VP-P dynamic range with headroom for feedback network losses |
Pinout & Package
MAX414EPD+ is supplied in a 14-pin plastic DIP (dual in-line package) with standard quad op-amp pinout. The package has 0.300" wide body, 0.100" lead pitch, and through-hole mounting compatible with legacy PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Inverting amplifier output channel 1; drives loads ≥2kΩ with ±3.5V swing from ±5V supplies |
| 2 | IN1− | Inverting input of channel 1; connected internally to base of PNP input transistor pair |
| 3 | IN1+ | Noninverting input of channel 1; high-impedance node (40MΩ CM input resistance) |
| 4 | V− | Negative supply rail; must be connected to system ground reference or negative rail - exposed paddle on TDFN variants connects here |
| 5 | IN2+ | Noninverting input of channel 2; electrically isolated from other channels with 135dB channel separation at 1kHz |
| 6 | IN2− | Inverting input of channel 2; matched to IN1− for common-mode rejection in differential configurations |
| 7 | OUT2 | Output of channel 2; identical AC/DC performance to OUT1, independent of channel 1 loading |
| 8 | V+ | Positive supply rail; accepts up to ±5.25V; PSRR of 90dB minimizes supply-induced output error |
| 9 | OUT3 | Output of channel 3; fully buffered and decoupled - no crosstalk impact on OUT1/OUT2 below 100kHz |
| 10 | IN3− | Inverting input of channel 3; shares same bias current spec (±130nA max) as IN1−/IN2− |
| 11 | IN3+ | Noninverting input of channel 3; used in 3-channel differential signal chains or multi-stage filtering |
| 12 | V− | Shared negative supply pin (same net as Pin 4); not internally tied - must be externally shorted for proper biasing |
| 13 | IN4+ | Noninverting input of channel 4; enables simultaneous processing of four independent low-noise signals |
| 14 | IN4− | Inverting input of channel 4; supports unity-gain inverter, transimpedance, or summing configurations |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low voltage noise | 2.4nV/√Hz max at 1kHz - sets benchmark for bipolar op amps in 1/f corner-limited applications like IR detectors |
| No internal input current-limiting resistors | Preserves noise floor by eliminating Johnson noise contribution from series resistors - requires external clamping for >±0.1V differential inputs |
| Stable driving of large capacitive loads | Remains stable with up to 3900pF in unity-gain follower configuration - eliminates need for external isolation resistors in most sensor buffering |
| Wide supply flexibility | Operates from ±2.4V to ±5.25V - supports low-power designs and compatibility with ±3.3V or ±5V legacy systems |
| High channel separation | 135dB at 1kHz - prevents inter-channel crosstalk in multi-signal acquisition systems such as 4-wire bridge readouts |
Applications
| Low-Noise Frequency Synthesizers | Infrared Detectors |
|---|---|
Use Scenario: Amplifying low-level IF signals in PLL-based synthesizer loop filters where phase noise directly impacts spectral purity. IC Role / Device Role / Timing Role: Low-noise op-amp configured as active integrator in charge-pump PLL loop filter. Use Value: 2.4nV/√Hz noise density minimizes integrated phase jitter; 28MHz bandwidth accommodates fast lock times without instability. |
Use Scenario: Pre-amplifying weak photocurrent from cooled HgCdTe or InSb infrared detector arrays. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) front-end with feedback resistor ≥100kΩ and low parasitic capacitance. Use Value: Bipolar input stage delivers optimal noise match to detector impedance; 115dB open-loop gain ensures high closed-loop accuracy. |
| High-Quality Audio Amplifiers | Bridge Signal Conditioning |
Use Scenario: Line-level preamplifier stage in professional audio interfaces requiring THD+N < -90dB at 1kHz. IC Role / Device Role / Timing Role: Dual-stage noninverting amplifier with gain = 10, driven by low-Z microphone preamp output. Use Value: 4.5V/µs slew rate prevents slew-induced distortion on 10VP-P transients; 135dB channel separation avoids stereo crosstalk. |
Use Scenario: Reading differential voltage from Wheatstone bridge strain gauges in structural health monitoring systems. IC Role / Device Role / Timing Role: Instrumentation amplifier core using three MAX414EPD+ channels (two for input buffers, one for difference amplifier). Use Value: Matched offset drift (±1µV/°C) and 105dB CMRR maintain bridge balance over temperature; quad layout simplifies PCB routing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA1612AIDR | FET-input (vs. bipolar), 1.1nV/√Hz noise, 40MHz GBW, ±2.25V to ±18V supply range | Better noise at high source impedances (>10kΩ); higher supply voltage tolerance; lower bias current (1.3pA vs. 130nA) | Select OPA1612AIDR when interfacing high-Z sensors or requiring wider supply range; avoid if matching low-Z detector noise is critical. |
| LT1028ACN8#PBF | Bipolar-input, 0.85nV/√Hz noise, 50MHz GBW, ±4V to ±18V supply, 8-pin DIP package | Lower noise and higher speed, but only dual-channel; no quad option; higher supply current (10mA vs. 3.3mA per amp) | Choose LT1028ACN8#PBF for ultimate noise performance in dual-channel systems where power and board space allow. |
Compared with MAX414EPD+, OPA1612AIDR offers superior noise at high source impedances and wider supply flexibility but lacks matched quad topology; LT1028ACN8#PBF delivers lower noise and higher bandwidth in dual-channel form but consumes more than 3× the supply current and occupies separate IC footprints.
Availability
MAX414EPD+ is available at Aetrix Electronics and suitable for low-noise instrumentation amplifiers, infrared detector front-ends, precision bridge signal conditioning, and frequency synthesizer loop filters requiring stable component supply across industrial temperature ranges.
Supply support for MAX414EPD+ 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 ultra-low-noise, high-speed precision amplification in ±5V and low-voltage systems - targeting applications where voltage noise, bandwidth, and DC accuracy must coexist without trade-offs.
FAQ
What is the maximum capacitive load the MAX414EPD+ can drive stably in unity-gain configuration?
The MAX414EPD+ remains stable driving up to 3900pF in unity-gain voltage-follower configuration, as verified in the Typical Operating Characteristics (Figure 6a/b). For loads exceeding 3900pF, an output isolation resistor (e.g., 10Ω) must be added between the amplifier output and the capacitive load to restore phase margin - a solution validated in Figure 7a/b. This capability eliminates external compensation in most sensor-buffering applications.
Does the MAX414EPD+ require external input protection diodes?
Yes - the MAX414EPD+ includes only back-to-back clamp diodes at its inputs (no series current-limiting resistors), making it vulnerable to differential input voltages exceeding ±0.1V. To protect against higher voltages (e.g., ESD or transients), external 100Ω–200Ω current-limiting resistors must be added in series with each input, limiting current to <20mA per Absolute Maximum Ratings. This preserves the device's ultra-low-noise performance while enabling robust field operation.
What is the guaranteed input offset voltage specification for MAX414EPD+ over its full operating temperature range?
The MAX414EPD+ guarantees a maximum input offset voltage of ±200µV over its full -40°C to +85°C operating temperature range, as specified in the Electrical Characteristics table under TA = -40°C to +85°C conditions. This value applies to both standard and "B" grade variants (MAX414BEPD+), and is supported by ±1µV/°C typical offset drift - ensuring predictable error behavior in thermally varying environments like industrial control cabinets.
Can the MAX414EPD+ operate from a single 5V supply?
Yes - the MAX414EPD+ supports single-supply operation with total supply voltages as low as 4.8V (e.g., V+ = 5V, V− = GND). Its input common-mode range extends to within 1.5V of each rail, and output swing reaches within 1.3V–1.4V of each rail into 2kΩ. However, for optimal noise and bandwidth performance, dual ±2.4V to ±5V supplies are recommended; single-supply use may reduce effective dynamic range and increase distortion near rail limits.
How does the MAX414EPD+ compare to the MAX412 in terms of noise and channel count?
The MAX414EPD+ shares identical noise performance (2.4nV/√Hz max at 1kHz), bandwidth (28MHz), and slew rate (4.5V/µs) with the dual-channel MAX412, but integrates four independent amplifiers in one 14-pin DIP package. This quad topology reduces component count and PCB area in multi-channel systems - such as 4-wire bridge readouts or multi-sensor data loggers - while maintaining per-channel electrical specifications and 135dB channel separation at 1kHz.
MAX414EPD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- Supplier Device Package:
- 14-PDIP
MAX414EPD+ FAQ
1.How can I place an order for MAX414EPD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX414EPD+ 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 MAX414EPD+ reliable?
The price and inventory of MAX414EPD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX414EPD+ is usually 5 days.
3.What payment methods are accepted for MAX414EPD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX414EPD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX414EPD+?
MAX414EPD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX414EPD+ 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 MAX414EPD+?
For technical support, including MAX414EPD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX414EPD+ requirements.
6.How does Aetrix verify that MAX414EPD+ is sourced from the original manufacturer or authorized distributors?
All MAX414EPD+ 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 MAX414EPD+ meets industry standards.
7.What is the process for return or replacement of MAX414EPD+?
All MAX414EPD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX414EPD+, 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 MAX414EPD+ part is unused and in its original packaging.
Return procedure for MAX414EPD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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