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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:1,323
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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 automotive-grade systems. It operates from dual ±2.25V to ±5.5V supplies or single +4.5V to +11V, delivers 5MHz gain-bandwidth, consumes only 770µA per amplifier, and features 110dB open-loop gain with 0.002% THD+N at 1kHz - 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 temperature range (–40°C to +125°C), 14-pin TSSOP package, rail-to-rail output swing within 10mV of rails (RL = 100kΩ), input common-mode range extending 200mV below VEE, and unity-gain stability without external compensation.
Technical Context
This quad op amp uses bipolar process technology and features fully independent amplifier channels with no phase reversal under overdrive. Its input stage supports common-mode voltages from VEE – 0.2V to VCC – 1.5V, while the output stage drives loads down to 1kΩ with <200mV rail margin.
AC performance is characterized with CL = 15pF and RL = 100kΩ: it achieves 3V/µs slew rate, 190kHz full-power bandwidth (5VP-P), and stable operation up to 300pF capacitive load - or higher with series isolation resistor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 5MHz - supports stable unity-gain configurations and moderate-speed closed-loop designs up to ~1MHz. |
| Quiescent Current per Amplifier | 770µA - enables low-power operation in always-on sensor front-ends and portable instrumentation. |
| Input Common-Mode Range | VEE – 0.2V to VCC – 1.5V - accommodates ground-referenced inputs and wide-swing reference buffers. |
| Rail-to-Rail Output Swing | Within 10mV of rails (RL = 100kΩ) - maximizes dynamic range in low-voltage single-supply systems. |
| Open-Loop Gain | 110dB (RL = 100kΩ) - ensures <0.001% gain error in precision gain stages with moderate closed-loop gains. |
| THD+N | 0.002% at 1kHz, 5VP-P - meets audio and high-resolution data acquisition linearity requirements. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial control, and harsh-environment applications. |
Pinout & Package
The MAX4495AUD is housed in a 14-pin TSSOP package (package code U14-1), 4.4mm body width, RoHS-compliant, with exposed pad not electrically connected.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Amplifier A output - drives external load; rail-to-rail capable with ≤10mV headroom (RL ≥ 100kΩ). |
| 2 | INA− | Amplifier A inverting input - high-impedance node; bias current 0.2–1µA limits leakage-sensitive designs. |
| 3 | INA+ | Amplifier A noninverting input - accepts signals down to VEE – 0.2V; matched to INA− for <1mV channel offset. |
| 4 | VEE | Negative supply rail - must be bypassed with 0.1µF capacitor to ground for stability and noise rejection. |
| 5 | VCC | Positive supply rail - requires separate 0.1µF bypass capacitor; supports ±2.25V to ±5.5V dual or +4.5V to +11V single supply. |
| 6 | INB+ | Amplifier B noninverting input - electrically isolated from other channels; shares same input specs as INA+. |
| 7 | INB− | Amplifier B inverting input - matched to INB+ for consistent DC performance across all four channels. |
| 8 | OUTB | Amplifier B output - identical AC/DC specs to OUTA; no crosstalk degradation (<–100dB at 1kHz). |
| 9 | INC+ | Amplifier C noninverting input - supports independent signal paths; input resistance >110MΩ in common-mode region. |
| 10 | INC− | Amplifier C inverting input - low input capacitance (2pF) minimizes high-frequency phase shift in filter applications. |
| 11 | VEE | Shared negative supply - all four amplifiers reference same VEE; layout must minimize ground bounce. |
| 12 | IND+ | Amplifier D noninverting input - full 14-pin pinout enables discrete routing of all four channels without shared traces. |
| 13 | IND− | Amplifier D inverting input - input offset voltage drift ≤3µV/°C ensures stable DC gain over automotive temperature range. |
| 14 | OUTD | Amplifier D output - delivers same 3V/µs slew rate and 5MHz GBW as other channels; no phase reversal on overdrive. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output stage | Swings within 10mV of VCC/VEE at high-Z loads - preserves full signal swing in low-voltage systems like 5V or 3.3V microcontroller interfaces. |
| No phase reversal on overdrive | Prevents latch-up or uncontrolled output during input transients - critical for sensor front-ends exposed to ESD or fault conditions. |
| Unity-gain stable | Operates without external compensation components - simplifies PCB layout and reduces BOM count in gain-of-one buffer applications. |
| Automotive temperature rating | Specified from –40°C to +125°C - eliminates derating calculations and enables direct use in engine control, ADAS, and powertrain modules. |
| Low THD+N (0.002%) | Enables clean amplification of audio-band and precision analog signals - suitable for high-resolution DAC output stages and active filters. |
Applications
| Battery-Powered Sensor Signal Conditioning | DAC Output Amplification |
|---|---|
Use Scenario: Amplifying low-level thermocouple or bridge sensor outputs in portable gas detectors or handheld test equipment powered by Li-ion batteries. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with rail-to-rail output driving ADC input; provides 5MHz bandwidth for transient response and 110dB loop gain for accuracy. Use Value: 770µA per amplifier extends battery life beyond 100 hours in continuous-monitoring mode while maintaining <10µV offset drift over temperature. | Use Scenario: Buffering and level-shifting the output of a 16-bit DAC in an industrial PLC analog output module requiring 0–10V or ±10V ranges. IC Role / Device Role / Timing Role: Unity-gain voltage follower with rail-to-rail swing and low THD+N - preserves DAC resolution and prevents clipping at supply extremes. Use Value: 0.002% THD+N at 1kHz ensures <0.001 LSB distortion in 16-bit systems; 200mV output headroom at 1kΩ load supports standard industrial load specifications. |
| Voltage Reference Generator | Industrial Control Loop Amplifier |
Use Scenario: Creating a stable, low-noise 2.5V or 4.096V reference for ADCs and comparators in factory automation I/O cards. IC Role / Device Role / Timing Role: Precision buffer for buried-zener or bandgap references; rejects supply ripple via 80dB PSRR and maintains CMRR >65dB over full temp range. Use Value: Input offset voltage ≤10mV and drift ≤3µV/°C ensure reference accuracy stays within ±0.02% over –40°C to +125°C ambient. | Use Scenario: Implementing PID compensation networks and current-sense amplification in motor drive feedback loops operating in electrically noisy factory environments. IC Role / Device Role / Timing Role: High-PSRR (80dB), high-CMRR (90dB) op amp in transimpedance and difference amplifier configurations - rejects common-mode noise from PWM inverters. Use Value: 14-pin TSSOP allows independent routing of all four channels for multi-loop control; 125°C rating supports placement near power stages without thermal derating. |
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 | Lower quiescent current (220µA), lower GBW (6.4MHz), but reduced output drive (±15mA vs. ±15mA typical) and narrower temp range (–40°C to +125°C same, but not AEC-Q100 qualified). | Not automotive-qualified; lacks guaranteed performance at 125°C with full parameter validation. | Select when ultra-low power dominates over automotive qualification and THD+N <0.002% is not required. |
| AD8604ARUZ | Higher precision (VOS ≤ 600µV max), lower noise (5.4nV/√Hz), but higher supply current (1.3mA) and limited rail-to-rail output swing (≥30mV from rails at RL = 10kΩ). | Optimized for low-noise, low-offset applications rather than low-power rail-to-rail output drive. | Select for sensor front-ends where offset and noise dominate, and supply current is secondary. |
Compared with TLV2464IDR and AD8604ARUZ, the MAX4495AUD uniquely balances automotive qualification, 770µA quiescent current, 5MHz GBW, and true rail-to-rail output swing - making it optimal for space-constrained, temperature-extreme, and battery-sensitive industrial and automotive signal chains where all three attributes are simultaneously required.
Availability
The MAX4495AUD is available at Aetrix Electronics and suitable for battery-powered sensor systems, industrial control loop amplifiers, DAC output stages, and voltage reference generators requiring stable component supply across automotive and extended-temperature production programs.
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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, communications, and computing markets.
The MAX4493/MAX4494/MAX4495 family was designed as low-power, rail-to-rail output op amps for precision signal conditioning in dual-supply and wide-input-voltage single-supply systems operating across the full automotive temperature range.
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 microcontroller-based designs. 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 pin-compatible with other devices in the MAX449x family?
No - the MAX4495AUD uses a 14-pin TSSOP package with dedicated pins for all four amplifier channels (OUTA/INA+/INA−/OUTB/INB+/INB−/OUTC/INC+/INC−/OUTD/IND+/IND−/VEE/VCC), while the MAX4493 (SC70-5) and MAX4494 (SOT23-8) have different pin counts and layouts. Pin compatibility exists only within same-channel-count variants (e.g., MAX4494AKA+ and MAX4494ASA+ share 8-pin SO/SOT23 footprints), not across the family.
Does the MAX4495AUD require external compensation for unity-gain stability?
No, the MAX4495AUD is unity-gain stable and requires no external compensation components. Its internal compensation ensures stable operation with closed-loop gains ≥1, including voltage followers and gain-of-one buffers. This eliminates the need for external capacitors or resistors in basic configurations, reducing board area and BOM cost while improving reliability.
What is the maximum capacitive load the MAX4495AUD can drive without oscillation?
The MAX4495AUD is stable driving capacitive loads up to 300pF with no external components. For larger loads, stability can be maintained by adding a series isolation resistor (e.g., 15Ω) between the output and the capacitor, as validated in the datasheet's Typical Operating Characteristics. This technique avoids oscillation while allowing use in anti-aliasing filters and long-cable driving applications.
How does the MAX4495AUD perform in terms of input offset voltage and drift?
The MAX4495AUD has a maximum input offset voltage of 10mV over the full –40°C to +125°C range, with a typical value of 3mV at +25°C. Its input offset voltage drift is guaranteed at ≤3µV/°C, ensuring predictable DC error accumulation across temperature. Channel-to-channel matching is ≤1mV, supporting matched amplifier applications such as instrumentation amplifiers and differential receivers.
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:
- Obsolete
- 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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