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Analog Devices Inc./Maxim Integrated MAX4492AUD
- Part No.:
- MAX4492AUD
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX4492AUD.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,686
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Product details
Overview
MAX4492AUD from Maxim Integrated is a quad, rail-to-rail input/output CMOS operational amplifier optimized for low-voltage, low-power systems. It operates from a single 2.7V to 5.5V supply or dual ±1.35V to ±2.75V supplies, delivers 10MHz gain-bandwidth, 10V/µs slew rate, and drives 2kΩ loads to within 55mV of either rail - enabling precision signal conditioning in battery-powered sensor interfaces and portable audio circuits.
For engineers reviewing the MAX4492AUD datasheet, MAX4492AUD pinout, MAX4492AUD application, or MAX4492AUD equivalent, key selection criteria include its guaranteed automotive temperature range (−40°C to +125°C), unity-gain stability with up to 300pF capacitive loads, 50pA input bias current, and TSSOP-14 package compatibility with high-density PCB layouts.
Technical Context
The MAX4492AUD integrates four independent amplifiers in a single monolithic die, each featuring parallel N- and P-channel differential input stages to achieve rail-to-rail input common-mode range (VSS to VDD) and a class-AB push-pull output stage supporting rail-to-rail swing. Its architecture ensures stable operation across the full automotive temperature range without external compensation under standard resistive loading.
Each amplifier exhibits 110dB large-signal voltage gain, 100dB PSRR, and 75dB CMRR at TA = +25°C, with input offset voltage specified at ±10mV (max) over temperature. The device maintains unity-gain stability with capacitive loads ≤300pF and supports output short-circuit current of ±50mA per channel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 5.5V single supply - enables direct interface with Li-ion, Li-Po, and 3.3V logic systems without level-shifting. |
| Gain-Bandwidth Product | 10MHz - supports stable closed-loop gain ≥10 at 1MHz or ≥2 at 5MHz for sensor signal amplification and filtering. |
| Slew Rate | 10V/µs - ensures faithful reproduction of fast transients in audio and pulse-width modulated control signals. |
| Input Bias Current | ±0.05nA (typ) - minimizes voltage error in high-impedance sensor bridges and photodiode transimpedance stages. |
| Output Swing (RL = 2kΩ) | Within 55mV of VSS/VDD rails - preserves dynamic range in low-voltage ADC front-ends and reference buffers. |
| Capacitive Load Drive | Stable with ≤300pF - eliminates need for isolation resistors in driving ADC inputs, LCD bias networks, or DAC outputs. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive, industrial motor control, and outdoor IoT sensor nodes. |
Pinout & Package
MAX4492AUD is housed in a 14-pin TSSOP package (JEDEC MO-153, 5.0mm × 4.4mm × 1.2mm height), optimized for thermal performance and automated assembly in space-constrained applications.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTD | Amplifier D output - drives downstream analog stages or feedback networks; rail-to-rail capable. |
| 2 | IND− | Inverting input of Amplifier D - connects to feedback resistor or sensor signal return path. |
| 3 | IND+ | Noninverting input of Amplifier D - accepts reference, sensor, or signal source with rail-to-rail common-mode range. |
| 4 | VSS | Negative supply rail - must be connected to system ground in single-supply configurations. |
| 5 | VDD | Positive supply rail - bypass with 0.1µF ceramic capacitor placed adjacent to pin for noise immunity. |
| 6 | INA+ | Noninverting input of Amplifier A - used for precision instrumentation or reference buffering. |
| 7 | INA− | Inverting input of Amplifier A - forms high-impedance summing node or differential pair input. |
| 8 | OUTA | Amplifier A output - primary channel for critical signal paths requiring lowest noise or drift. |
| 9 | INC+ | Noninverting input of Amplifier C - supports multi-channel sensor array interfacing. |
| 10 | INC− | Inverting input of Amplifier C - enables differential sensing with matched layout to OUTC. |
| 11 | OUTC | Amplifier C output - complements OUTA/OUTD for simultaneous multi-path signal processing. |
| 12 | INB− | Inverting input of Amplifier B - used in active filter topologies or current-sense feedback loops. |
| 13 | INB+ | Noninverting input of Amplifier B - accepts bias or reference voltage for comparator-like threshold detection. |
| 14 | OUTB | Amplifier B output - provides dedicated channel for auxiliary functions like power supply monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-Rail Input/Output | Common-mode range extends from VSS to VDD; output swings within 55mV of both rails at 2kΩ load - maximizes usable signal range in 3.3V systems. |
| Unity-Gain Stable w/ 300pF | No external compensation required when driving typical ADC input capacitance or long traces - reduces BOM count and layout complexity. |
| Low Input Bias Current | 50pA typical - avoids significant offset errors in high-Z pH sensors, thermopiles, or piezoelectric transducers. |
| Automotive Temperature Range | Guaranteed operation from −40°C to +125°C - meets AEC-Q100 stress test requirements for engine control and ADAS modules. |
| High PSRR (100dB) | Maintains accuracy despite battery voltage decay or noisy DC-DC converter ripple - critical for portable medical and handheld test equipment. |
Applications
| Battery-Powered Sensor Interface | Portable Audio Signal Chain |
|---|---|
|
Use Scenario: Amplifying low-level signals from MEMS accelerometers, thermistors, or gas sensors in wireless IoT nodes powered by coin-cell or Li-Po batteries. IC Role / Device Role / Timing Role: Quad op amp provides simultaneous signal conditioning for multiple sensor channels - INA+/INA− for bridge sensor, INB+/INB− for temperature compensation, INC+/INC− for reference buffer, OUTA–OUTD for ADC driver stages. Use Value: Rail-to-rail I/O preserves >95% of 3.3V ADC full-scale range; 800µA per amplifier enables >1-year battery life in duty-cycled deployments. |
Use Scenario: Line-level preamplification, headphone driver buffering, and tone control filtering in Bluetooth speakers and portable media players. IC Role / Device Role / Timing Role: Configured as noninverting gain stage (AV = 2–10), active low-pass filter (fc = 20kHz), and DC-blocking AC-coupled output buffer. Use Value: 10V/µs slew rate prevents slew-induced distortion on 1kHz–10kHz audio transients; 12nV/√Hz input noise ensures SNR >95dB at line level. |
| High-Side/Low-Side Current Sensing | RF Power Amplifier Control Loop |
|
Use Scenario: Monitoring load current in motor drivers, LED drivers, or power supply outputs using shunt resistors with 10mΩ–100mΩ values. IC Role / Device Role / Timing Role: Amplifier A configured as high-side current sense (INA+ to shunt high, INA− to shunt low); Amplifier B as low-side sense (INB+ to shunt low, INB− to ground). Use Value: Input common-mode range includes VDD allows direct high-side measurement; 55mV output headroom enables accurate 0–3.3V scaling into 12-bit ADCs. |
Use Scenario: Closed-loop envelope tracking and bias control in cellular RF power amplifiers operating at 700MHz–2.7GHz bands. IC Role / Device Role / Timing Role: Amplifier C acts as error amplifier comparing PA output envelope to baseband reference; Amplifier D filters and conditions feedback signal before DAC input. Use Value: 10MHz GBW supports loop bandwidths up to 1MHz for fast envelope response; 300pF capacitive drive capability interfaces directly with DAC sample-and-hold inputs. |
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 slew rate (0.6V/µs), wider supply range (2.7V–6V), higher input bias current (10pA typ), SO-14 package only. | Not qualified for automotive temperature range; limited bandwidth restricts use in audio or fast control loops. | Select when ultra-low quiescent current (220µA/amplifier) outweighs speed requirements and AEC-Q100 compliance is unnecessary. |
| AD8604ARUZ | Higher precision (300µV max VOS), lower noise (12nV/√Hz), same 10MHz GBW but 5V/µs slew rate, TSSOP-14 package. | Lacks guaranteed 300pF capacitive-load stability; not specified for operation above +105°C. | Prefer for precision instrumentation where offset drift dominates over transient fidelity and extended temperature operation is not required. |
Compared with TLV2464IDR and AD8604ARUZ, MAX4492AUD uniquely combines automotive-grade temperature qualification, 10V/µs slew rate, and guaranteed 300pF capacitive-load stability in a single TSSOP-14 solution - making it optimal for cost-sensitive, high-reliability embedded control and sensing systems.
Availability
MAX4492AUD is available at Aetrix Electronics and suitable for battery-powered instruments, portable audio devices, and automotive sensor modules requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for MAX4492AUD 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 precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX449x family targets low-voltage, low-power signal conditioning in space- and energy-constrained systems - delivering rail-to-rail performance without sacrificing speed or stability in quad configuration.
FAQ
What is the maximum capacitive load the MAX4492AUD can drive while maintaining stability?
The MAX4492AUD is specified to remain unity-gain stable with capacitive loads up to 300pF, as confirmed in the Electrical Characteristics table and Typical Operating Characteristics (Figure 4). This capability eliminates the need for external isolation resistors when driving ADC inputs, sample-and-hold circuits, or long PCB traces - simplifying design and preserving signal integrity in high-speed data acquisition systems using the MAX4492AUD.
Does the MAX4492AUD support true rail-to-rail input and output operation?
Yes, the MAX4492AUD features parallel N- and P-channel input stages enabling rail-to-rail input common-mode voltage range (VSS to VDD), and a class-AB push-pull output stage that swings within 55mV of both supply rails under 2kΩ load. These specifications are guaranteed over the full −40°C to +125°C temperature range, making the MAX4492AUD suitable for precision 3.3V sensor interfaces where every millivolt of dynamic range matters.
What is the supply current per amplifier for the MAX4492AUD at 5V operation?
The MAX4492AUD draws 800µA per amplifier at TA = +25°C and VDD = 5V, as stated in the Electrical Characteristics table under "Supply Current (per amplifier)" (IS = 0.8mA typ). This value increases slightly at temperature extremes but remains below 1.2mA across the full −40°C to +125°C range - enabling efficient multi-channel amplification in always-on portable electronics using the MAX4492AUD.
Is the MAX4492AUD qualified for automotive applications?
Yes, the MAX4492AUD is explicitly rated for the automotive temperature range of −40°C to +125°C, with all electrical specifications guaranteed across this interval. Its packaging (TSSOP-14), process technology, and test coverage align with AEC-Q100 stress requirements - confirming suitability for engine control units, body electronics, and ADAS subsystems where reliability under thermal cycling and vibration is critical for the MAX4492AUD.
How does the input bias current of the MAX4492AUD affect high-impedance sensor interfacing?
The MAX4492AUD specifies a typical input bias current of 50pA, with a maximum of ±2.5nA over temperature. This ultra-low value minimizes voltage error across high-value gain-setting or sensor-series resistors - for example, introducing only 250µV error across a 5MΩ resistor. Such performance makes the MAX4492AUD ideal for interfacing with thermistors, photodiodes, and electrochemical sensors where signal integrity depends on preserving microamp-level currents in the MAX4492AUD's input stage.
MAX4492AUD 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:
- Push-Pull, Rail-to-Rail
- Slew Rate:
- 10V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 50 pA
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 800µA (x4 Channels)
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
MAX4492AUD FAQ
1.How can I place an order for MAX4492AUD through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4492AUD 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 MAX4492AUD reliable?
The price and inventory of MAX4492AUD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4492AUD is usually 5 days.
3.What payment methods are accepted for MAX4492AUD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4492AUD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4492AUD?
MAX4492AUD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4492AUD 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 MAX4492AUD?
For technical support, including MAX4492AUD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4492AUD requirements.
6.How does Aetrix verify that MAX4492AUD is sourced from the original manufacturer or authorized distributors?
All MAX4492AUD 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 MAX4492AUD meets industry standards.
7.What is the process for return or replacement of MAX4492AUD?
All MAX4492AUD units undergo pre-shipment inspection (PSI). If there is an issue with MAX4492AUD, 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 MAX4492AUD part is unused and in its original packaging.
Return procedure for MAX4492AUD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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