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Analog Devices Inc./Maxim Integrated MAX4495ASD+
- Part No.:
- MAX4495ASD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4495ASD+.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:240
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Product details
Overview
The MAX4495ASD+ from Maxim Integrated is a quad rail-to-rail operational amplifier designed for precision signal conditioning in automotive and industrial systems operating from ±2.25V to ±5.5V dual supplies or +4.5V to +11V single supply. It delivers 5MHz gain-bandwidth, 770µA quiescent current per amplifier, 110dB open-loop gain, and rail-to-rail output swing within 10mV of either rail (RL = 100kΩ), enabling high-accuracy DAC output buffering in battery-powered instrumentation.
For engineers reviewing the MAX4495ASD+ datasheet, MAX4495ASD+ pinout, MAX4495ASD+ application, or MAX4495ASD+ equivalent, key selection criteria include its -40°C to +125°C automotive temperature rating, 14-pin SO package, input common-mode range extending 200mV below VEE, 0.002% THD+N at 1kHz, and unity-gain stability with 300pF capacitive-load capability.
Technical Context
This quad op amp uses bipolar process technology and features an input stage that operates 200mV beyond the negative rail and up to 1.5V below the positive rail, paired with a rail-to-rail output stage capable of driving 1kΩ loads while maintaining ≤200mV headroom. Its 75° phase margin and 15dB gain margin ensure stable unity-gain operation without external compensation.
Each amplifier channel exhibits matched input offset voltage (≤1mV between channels), low input bias current (0.2–1µA), and high CMRR (65–90dB) and PSRR (65–80dB), supporting precision DC-coupled applications such as voltage reference generation and sensor signal amplification in noisy environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±2.25V to ±5.5V dual or +4.5V to +11V single - supports wide-range industrial and automotive power rails |
| Quiescent Current per Amp | 770µA typical - enables low-power operation in always-on monitoring circuits |
| Gain-Bandwidth Product | 5MHz - sufficient for anti-aliasing, active filtering, and medium-speed DAC buffering |
| Input Common-Mode Range | VEE – 0.2V to VCC – 1.5V - allows direct interfacing with sensors referenced to negative rail |
| Rail-to-Rail Output Swing | Within 10mV of rails (RL = 100kΩ) - maximizes dynamic range in low-voltage systems |
| Open-Loop Gain | 110dB (RL = 100kΩ) - ensures <100µV error in closed-loop gain configurations |
| THD+N | 0.002% at 1kHz - preserves signal fidelity in audio and precision measurement paths |
Pinout & Package
The MAX4495ASD+ is housed in a 14-pin SO (Small Outline) package, RoHS-compliant and rated for automotive temperature range (-40°C to +125°C). Pin numbering follows standard SO outline S14-1 (document 21-0041).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Channel A output - drives external load or feedback network |
| 2 | INA− | Channel A inverting input - accepts feedback or inverted signal path |
| 3 | INA+ | Channel A noninverting input - connects to reference, sensor, or signal source |
| 4 | VEE | Negative supply - must be bypassed with 0.1µF capacitor to ground |
| 5 | VCC | Positive supply - must be bypassed with 0.1µF capacitor to ground |
| 6 | INB+ | Channel B noninverting input - independent signal path for multi-channel design |
| 7 | INB− | Channel B inverting input - supports differential or inverting configuration |
| 8 | OUTB | Channel B output - fully isolated from Channel A for crosstalk-sensitive applications |
| 9 | INC+ | Channel C noninverting input - third independent amplifier input |
| 10 | INC− | Channel C inverting input - enables three-channel simultaneous signal processing |
| 11 | OUTC | Channel C output - maintains >100dB all-hostile crosstalk suppression |
| 12 | IND+ | Channel D noninverting input - fourth independent channel for system-level integration |
| 13 | IND− | Channel D inverting input - supports full quad-channel differential or single-ended topologies |
| 14 | OUTD | Channel D output - completes quad architecture with matched AC/DC performance |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal on overdriven inputs | Prevents catastrophic latch-up or signal inversion during transient input excursions |
| Unity-gain stable | Eliminates need for external compensation components in buffer or gain=1 configurations |
| Stable with 300pF capacitive load | Enables direct driving of ADC input capacitors or long PCB traces without oscillation |
| Input voltage range extends 200mV below VEE | Supports level-shifting and single-supply operation with ground-referenced sensors |
| Automotive temperature range (−40°C to +125°C) | Validated for under-hood and industrial control environments without derating |
Applications
| Battery-Powered Systems | DAC Output Amplifiers |
|---|---|
|
Use Scenario: Portable gas analyzers and handheld test equipment requiring extended runtime and precision analog front-ends. IC Role / Device Role / Timing Role: Quad op amp provides simultaneous signal conditioning for sensor inputs, reference buffers, and display drivers. Use Value: 770µA per amplifier and rail-to-rail output maximize usable voltage range from 3.3V Li-ion cells, extending battery life by >25% versus higher-IQ alternatives. |
Use Scenario: Industrial PLC modules converting digital setpoints to analog 4–20mA or 0–10V control signals. IC Role / Device Role / Timing Role: Configured as unity-gain buffer and precision I/V converter for DAC outputs. Use Value: 0.002% THD+N and 110dB open-loop gain ensure <0.01% FSR linearity error across full temperature range. |
| Industrial Control Systems | Voltage Reference Generators |
|
Use Scenario: Motor drive feedback loops measuring current shunt voltages and encoder signals in factory automation. IC Role / Device Role / Timing Role: Four independent amplifiers condition current sense, position feedback, temperature, and supply monitoring signals. Use Value: Matched input offset (≤1mV) and high CMRR (≥65dB) reject common-mode noise from PWM switching, reducing measurement uncertainty by 40%. |
Use Scenario: Precision data acquisition systems requiring ultra-stable reference buffers for 16-bit+ SAR and sigma-delta ADCs. IC Role / Device Role / Timing Role: Low-noise, low-drift amplifier isolates and buffers bandgap references while driving heavy capacitive loads. Use Value: Input offset drift of 3µV/°C and 8nV/√Hz input noise preserve reference accuracy over temperature and time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV324IDR | Lower GBWP (1MHz), higher IQ (120µA per amp), no extended input range below VEE | Not suitable for precision sensor interfaces requiring sub-rail input operation | Choose LMV324IDR only for cost-sensitive, low-bandwidth applications where rail-to-rail input is unnecessary |
| TSV914IQDT | Higher GBWP (8MHz), lower IQ (80µA), but limited to 0°C to +70°C commercial temp range | Cannot replace MAX4495ASD+ in automotive or extended-temperature industrial designs | Use TSV914IQDT only in consumer or commercial-grade systems with ambient temperature constraints |
Compared with LMV324IDR and TSV914IQDT, the MAX4495ASD+ uniquely combines automotive temperature rating, extended input range below VEE, and 5MHz bandwidth at 770µA - making it the only option qualified for precision quad-amplifier roles in harsh-environment control systems.
Availability
The MAX4495ASD+ is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial PLC analog I/O modules, and automotive sensor signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4495ASD+ 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 U.S.-based semiconductor company specializing in high-performance analog and mixed-signal ICs for industrial, automotive, and communications applications.
The MAX4493/MAX4494/MAX4495 family was designed specifically for low-power, rail-to-rail signal conditioning in space-constrained automotive and industrial systems demanding wide supply range and high DC precision.
FAQ
What is the operating temperature range of the MAX4495ASD+?
The MAX4495ASD+ is specified and tested over the full automotive temperature range of −40°C to +125°C. This rating is guaranteed by design and validated through production testing at +25°C, with limits over temperature ensured by characterization - making MAX4495ASD+ suitable for under-hood automotive modules and industrial control cabinets without thermal derating.
Does the MAX4495ASD+ support single-supply operation?
Yes, the MAX4495ASD+ operates from a single supply of +4.5V to +11V in addition to dual supplies of ±2.25V to ±5.5V. Its input common-mode range extends 200mV below the negative rail (which may be ground in single-supply use), and its rail-to-rail output delivers full swing - enabling true single-supply designs such as portable medical sensors and battery-powered data loggers using MAX4495ASD+.
What is the maximum capacitive load the MAX4495ASD+ can drive stably?
The MAX4495ASD+ is stable with capacitive loads up to 300pF when configured in unity-gain. For larger loads, an isolation resistor (e.g., 15Ω) in series with the output restores stability - as verified in the Capacitive-Load Stability graph (Figure MAX4493-26) and confirmed by transient response testing in the datasheet. This capability allows MAX4495ASD+ to directly interface with ADC input capacitors and long PCB traces.
How does the input offset voltage matching compare across channels in the MAX4495ASD+?
The MAX4495ASD+ specifies input offset voltage channel matching of ≤1mV between any two amplifiers in the quad package. This tight matching - combined with 3µV/°C offset drift - ensures consistent gain and common-mode rejection across multi-channel signal chains, such as simultaneous current sensing in 3-phase motor drives where MAX4495ASD+ conditions all three phase currents plus neutral.
Is the MAX4495ASD+ pin-compatible with other packages in the MAX4493/MAX4494/MAX4495 family?
No - the MAX4495ASD+ uses a 14-pin SO package, while the MAX4495AUD+ uses a 14-pin TSSOP, and the MAX4494AKA+ uses an 8-pin SOT23. Although functional specifications are identical across the family, pinouts differ significantly between package types; the 14-pin SO layout of MAX4495ASD+ is not interchangeable with TSSOP or smaller footprints without PCB redesign.
MAX4495ASD+ 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:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 3V/µs
- Gain Bandwidth Product:
- 5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 200 nA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 770µA (x4 Channels)
- Current - Output / Channel:
- 15 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 11 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MAX4495ASD+ FAQ
1.How can I place an order for MAX4495ASD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4495ASD+ 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 MAX4495ASD+ reliable?
The price and inventory of MAX4495ASD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4495ASD+ is usually 5 days.
3.What payment methods are accepted for MAX4495ASD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4495ASD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4495ASD+?
MAX4495ASD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4495ASD+ 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 MAX4495ASD+?
For technical support, including MAX4495ASD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4495ASD+ requirements.
6.How does Aetrix verify that MAX4495ASD+ is sourced from the original manufacturer or authorized distributors?
All MAX4495ASD+ 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 MAX4495ASD+ meets industry standards.
7.What is the process for return or replacement of MAX4495ASD+?
All MAX4495ASD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4495ASD+, 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 MAX4495ASD+ part is unused and in its original packaging.
Return procedure for MAX4495ASD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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