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Analog Devices Inc./Maxim Integrated MAX4495AUD+
- Part No.:
- MAX4495AUD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX4495AUD+.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:202
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Product details
Overview
The MAX4495AUD+ from Maxim Integrated is a quad rail-to-rail output operational amplifier designed for precision signal conditioning in dual-supply (±2.25V to ±5.5V) or single-supply (+4.5V to +11V) systems. It delivers 5MHz gain-bandwidth, 770µA quiescent current per amplifier, and output swing within 10mV of either rail (RL = 100kΩ), enabling high-fidelity amplification in battery-powered industrial sensors and DAC output stages.
For engineers reviewing the MAX4495AUD+ datasheet, MAX4495AUD+ pinout, MAX4495AUD+ application, or MAX4495AUD+ equivalent, key selection criteria include its automotive-grade temperature range (−40°C to +125°C), 110dB open-loop gain, 0.002% THD+N at 1kHz, input common-mode range extending 200mV below VEE, and TSSOP-14 packaging for space-constrained PCB layouts.
Technical Context
This quad op amp uses bipolar process technology and features unity-gain stability with no phase reversal under overdriven inputs. Its rail-to-rail output stage supports low-voltage operation down to ±2.25V while maintaining 190kHz full-power bandwidth at 5VP-P output.
The device achieves 65–90dB CMRR and PSRR across its operating range, with input bias current ≤1µA and input offset voltage drift of only 3µV/°C - critical for stable DC-coupled sensor interfaces and reference buffers in automotive control units.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 5MHz - enables stable closed-loop operation up to 500kHz at gain = 10, suitable for anti-aliasing and active filtering. |
| Quiescent Current per Amplifier | 770µA - allows four independent channels to operate under 3.1mA total, ideal for always-on battery-powered nodes. |
| Input Common-Mode Range | VEE − 0.2V to VCC − 1.5V - supports sensing signals near negative rail, e.g., current-sense shunt monitoring. |
| Output Voltage Swing | Within 10mV of rails (RL = 100kΩ) - maximizes dynamic range in low-voltage data acquisition systems. |
| Open-Loop Gain | 110dB (RL = 100kΩ) - ensures <100µV error in unity-gain buffer configurations for precision voltage references. |
| THD+N | 0.002% at 1kHz - preserves audio and instrumentation signal integrity without harmonic contamination. |
| Slew Rate | 3V/µs - supports clean 5VP-P output transitions at up to 190kHz full-power bandwidth. |
Pinout & Package
The MAX4495AUD+ is housed in a 14-pin TSSOP package (package code U14-1, JEDEC MO-153), 4.4mm wide, with 0.65mm pitch and exposed pad for thermal enhancement. Pin 1 is marked with a dot; pin numbering follows standard TSSOP convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTD | Channel D output - drives external load or feedback network; rail-to-rail capable. |
| 2 | IND− | Channel D inverting input - connects to feedback resistor or inverting node in transimpedance configuration. |
| 3 | IND+ | Channel D noninverting input - accepts reference or sensor signal; supports common-mode down to VEE − 0.2V. |
| 4 | VEE | Negative supply rail - must be bypassed with 0.1µF capacitor to ground for noise immunity. |
| 5 | VCC | Positive supply rail - requires dedicated 0.1µF bypass capacitor; supports dual or single supply operation. |
| 6 | INA+ | Channel A noninverting input - primary signal entry point for first amplifier; matched to INA− for low offset. |
| 7 | INA− | Channel A inverting input - used for feedback or differential sensing; channel-matched to INA+ (≤1mV offset). |
| 8 | OUTA | Channel A output - provides buffered or amplified signal; stable driving 300pF capacitive loads. |
| 9 | INC+ | Channel C noninverting input - third amplifier input; shares same input specs as INA+ and INB+. |
| 10 | INC− | Channel C inverting input - symmetrically matched to INC+; supports precision differential gain stages. |
| 11 | OUTC | Channel C output - independent rail-to-rail output; usable for multi-channel signal routing or redundancy. |
| 12 | IND+ | Channel D noninverting input - fourth amplifier input; fully specified across −40°C to +125°C. |
| 13 | IND− | Channel D inverting input - matches other channels' input bias and offset characteristics. |
| 14 | OUTB | Channel B output - second amplifier output; pin-compatible with MAX4494's OUTB in dual-channel designs. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Within 10mV of VCC/VEE (RL = 100kΩ) - preserves >99% of available voltage headroom in low-voltage systems. |
| No phase reversal on overdrive | Prevents latch-up or uncontrolled output during input overload - essential for fault-tolerant sensor front-ends. |
| Unity-gain stable | Operates without external compensation at gain = 1 - simplifies design of buffers and followers in compact layouts. |
| Automotive temperature rating | −40°C to +125°C operation - qualified for engine control, ADAS camera modules, and under-hood power management. |
| Low THD+N | 0.002% at 1kHz - meets Class-D audio preamp and high-resolution data converter interface requirements. |
Applications
| Battery-Powered Sensor Node | DAC Output Amplifier |
|---|---|
|
Use Scenario: Low-power analog front-end for wireless environmental sensor collecting temperature, humidity, and pressure data. IC Role / Device Role / Timing Role: Quad amplifier configures one channel as precision reference buffer, two as sensor signal conditioners, and one as multiplexed output driver. Use Value: 770µA per amplifier enables 4-channel operation under 3.1mA, extending coin-cell life beyond 5 years in sleep-active cycling. |
Use Scenario: Post-processing stage for 16-bit DAC in programmable power supply controller. IC Role / Device Role / Timing Role: Unity-gain buffer isolating DAC output from variable load impedance while preserving linearity and settling time. Use Value: 110dB open-loop gain ensures <1 LSB error at 16-bit resolution; rail-to-rail swing delivers full-scale output across 0–5V range. |
| Industrial Voltage Reference Generator | Automotive Signal Conditioning |
|
Use Scenario: Precision reference source for ADCs in PLC analog input modules requiring ±10V or 0–20mA loop outputs. IC Role / Device Role / Timing Role: Noninverting amplifier with trimmed resistive feedback generating stable, low-drift reference voltages. Use Value: 3µV/°C offset drift and 65–90dB PSRR suppress supply ripple and thermal gradients, maintaining <0.01% accuracy over temperature. |
Use Scenario: Front-end amplification for oxygen sensor (lambda probe) and knock sensor signals in engine control units. IC Role / Device Role / Timing Role: High-CMRR differential amplifier rejecting ignition noise while amplifying millivolt-level sensor outputs. Use Value: 65–90dB CMRR at 1kHz rejects EMI from spark plugs; −40°C to +125°C rating ensures reliability in under-hood environments. |
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 |
|---|---|---|---|
| TLV2464IDR | Higher quiescent current (600µA per amp vs. 770µA), lower GBW (6.4MHz), no automotive temp grade. | Rated only to +105°C; lacks AEC-Q200 qualification; less suitable for under-hood use. | Select when cost sensitivity outweighs automotive qualification and ultra-low power is secondary. |
| AD8604ARUZ | FEMTOampere input bias (0.3pA vs. 0.2–1µA), higher GBW (8MHz), but higher IS (1.2mA per amp). | Better for high-impedance pH or photodiode sensors; unsuitable for long-life battery operation due to 4.8mA total IQ. | Choose for ultra-low input bias applications where power budget allows >4× higher current draw. |
Compared with TLV2464IDR and AD8604ARUZ, the MAX4495AUD+ uniquely balances automotive qualification, sub-1mA per-amplifier consumption, and 5MHz bandwidth - making it optimal for space- and power-constrained embedded control systems requiring guaranteed performance across extreme temperatures.
Availability
The MAX4495AUD+ is available at Aetrix Electronics and suitable for battery-powered systems, industrial control systems, and automotive signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4495AUD+ 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) designs high-performance analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX4493/MAX4494/MAX4495 family targets low-power, precision signal conditioning in resource-constrained systems - emphasizing rail-to-rail operation, wide supply flexibility, and automotive-grade reliability.
FAQ
What supply voltage ranges does the MAX4495AUD+ support?
The MAX4495AUD+ operates from dual supplies of ±2.25V to ±5.5V or a single supply of +4.5V to +11V. This flexibility allows use in both traditional split-rail industrial systems and modern single-rail battery-powered devices. The device maintains full rail-to-rail output swing and specified AC performance across this entire range, with PSRR tested and guaranteed from ±2.25V to ±5.5V.
Is the MAX4495AUD+ qualified for automotive applications?
Yes, the MAX4495AUD+ is explicitly rated for the automotive temperature range of −40°C to +125°C and carries the "/V" automotive qualification suffix in Maxim's ordering nomenclature. It meets AEC-Q200 stress test requirements for passive components and is widely deployed in engine control units, ADAS camera modules, and body electronics where extended temperature operation is mandatory.
Does the MAX4495AUD+ require external compensation for unity-gain stability?
No, the MAX4495AUD+ is internally compensated and unity-gain stable. It can be configured as a buffer (gain = 1) without external components while maintaining ≥75° phase margin and no sustained oscillations - even with 300pF capacitive loads. This eliminates compensation networks and reduces board area in space-constrained designs.
What is the maximum capacitive load the MAX4495AUD+ can drive without instability?
The MAX4495AUD+ remains stable driving up to 300pF directly at its output (AV = +1V/V). For larger loads, an isolation resistor (e.g., 15Ω) between the output and capacitive load restores stability - demonstrated in Figure 1 of the datasheet. This capability supports direct connection to ADC input capacitors, long cables, or LCD bias networks without added complexity.
How does the input common-mode range of the MAX4495AUD+ benefit sensor interfacing?
The MAX4495AUD+ input common-mode range extends from VEE − 0.2V to VCC − 1.5V, allowing valid operation with inputs 200mV below the negative rail. This enables accurate amplification of shunt-based current-sense signals referenced to ground or negative potentials - a critical feature for high-side and low-side current monitoring in motor drivers and power supplies.
MAX4495AUD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm 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-TSSOP
MAX4495AUD+ FAQ
1.How can I place an order for MAX4495AUD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4495AUD+ 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 MAX4495AUD+ reliable?
The price and inventory of MAX4495AUD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4495AUD+ is usually 5 days.
3.What payment methods are accepted for MAX4495AUD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4495AUD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4495AUD+?
MAX4495AUD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4495AUD+ 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 MAX4495AUD+?
For technical support, including MAX4495AUD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4495AUD+ requirements.
6.How does Aetrix verify that MAX4495AUD+ is sourced from the original manufacturer or authorized distributors?
All MAX4495AUD+ 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 MAX4495AUD+ meets industry standards.
7.What is the process for return or replacement of MAX4495AUD+?
All MAX4495AUD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4495AUD+, 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 MAX4495AUD+ part is unused and in its original packaging.
Return procedure for MAX4495AUD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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