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Analog Devices Inc./Maxim Integrated MAX4487AUD+
- Part No.:
- MAX4487AUD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX4487AUD+.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,339
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Product details
Overview
MAX4487AUD+ from Maxim Integrated is a quad, rail-to-rail output operational amplifier optimized for single-supply operation from +2.7V to +5.5V, featuring 7MHz gain-bandwidth product, ±0.3mV typical input offset voltage (max ±9.0mV), rail-to-rail output swing into 2kΩ, and stability with up to 100pF capacitive loads - used in sensor signal conditioning and infrared receiver front-ends.
For engineers reviewing the MAX4487AUD+ datasheet, MAX4487AUD+ pinout, MAX4487AUD+ application, or MAX4487AUD+ equivalent, this page delivers verified electrical parameters, TSSOP-14 package mapping, channel-specific terminal roles, temperature-range validated performance (–40°C to +125°C), and real-world design context for portable instrumentation and automotive-adjacent signal detection circuits.
Technical Context
The MAX4487AUD+ implements a CMOS-input, rail-to-rail output architecture enabling ground-sensing inputs and full-swing output capability across its four independent amplifiers. It achieves unity-gain stability without external compensation while driving 2kΩ loads and tolerating 100pF capacitive loads - critical for interfacing with ADC drivers and active filters.
Each amplifier features 85dB large-signal voltage gain (RL = 2kΩ), 20V/µs slew rate, and <0.01% THD at 10kHz into 2kΩ. Input bias current is ±0.1pA typical, supporting high-impedance sensor interfaces without significant error contribution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 7MHz - supports stable closed-loop operation up to ~1MHz at AV = +10, suitable for anti-aliasing and signal reconstruction filters. |
| Input Offset Voltage (max) | ±9.0mV - defines worst-case DC error in precision DC-coupled gain stages; calibrated systems may trim residual offset. |
| Supply Voltage Range | +2.7V to +5.5V - enables direct interface with Li-ion battery (3.0–4.2V) and 3.3V logic rails without level-shifting. |
| Rail-to-Rail Output Swing | Within 30mV of VDD and 50mV of VSS into 2kΩ - preserves dynamic range in low-voltage data acquisition channels. |
| Capacitive Load Stability | Up to 100pF - allows direct connection to long PCB traces, EMI filters, or ADC input capacitance without oscillation. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive modules, industrial sensors, and portable medical devices. |
| Input Bias Current | ±0.1pA typical - minimizes voltage drop across high-Z sources like thermistors, photodiodes, or pH electrodes. |
Pinout & Package
The MAX4487AUD+ is housed in a 14-pin TSSOP package (JEDEC MO-153, 5.0mm × 4.4mm × 1.2mm height), RoHS-compliant, with exposed pad for thermal enhancement (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INA− | Inverting input for Channel A - accepts differential or single-ended feedback signals; high-impedance CMOS node. |
| 2 | INA+ | Noninverting input for Channel A - referenced to system ground or bias network; supports ground-sensing operation. |
| 3 | OUTA | Output for Channel A - rail-to-rail capable; drives 2kΩ load with ≤30mV headroom to VDD and ≤50mV to VSS. |
| 4 | VDD | Positive supply pin - connects to +2.7V to +5.5V source; requires local 0.1µF ceramic bypass capacitor. |
| 5 | INB− | Inverting input for Channel B - electrically isolated from other channels; shares same VDD/VSS rails. |
| 6 | INB+ | Noninverting input for Channel B - identical input structure to INA+; no phase reversal on overdrive. |
| 7 | OUTB | Output for Channel B - independently buffered; maintains 7MHz GBW and 20V/µs slew rate per channel. |
| 8 | OUTC | Output for Channel C - pin-compatible with standard quad op amp layouts; supports parallel or cascaded configurations. |
| 9 | INC− | Inverting input for Channel C - matches electrical specs of INA−; validated for –40°C to +125°C operation. |
| 10 | INC+ | Noninverting input for Channel C - enables true single-supply zero-crossing detection when biased at mid-rail. |
| 11 | VSS | Negative supply pin - connects to system ground; serves as reference for all inputs and outputs. |
| 12 | IND+ | Noninverting input for Channel D - supports independent sensor channel routing without crosstalk degradation (–90dB @ 1MHz). |
| 13 | IND− | Inverting input for Channel D - fully specified for common-mode range from VSS to VDD – 1.4V. |
| 14 | OUTD | Output for Channel D - completes quad functionality; output impedance remains <100Ω below 100kHz. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal on overdriven inputs | Prevents latch-up or false triggering in comparator-like zero-crossing applications without external clamping diodes. |
| Ground-sensing input stage | Accepts common-mode voltages down to VSS (0V), enabling direct interface with unipolar sensors and transducers. |
| 76–85dB large-signal voltage gain (RL = 2kΩ) | Ensures accurate amplification of small signals (e.g., thermocouple µV outputs) without gain collapse near rail limits. |
| 0.01% THD into 2kΩ at 10kHz | Meets audio-grade and precision measurement requirements where harmonic distortion must remain below audible thresholds. |
| 1000GΩ input resistance | Minimizes loading error on high-impedance sources such as piezoelectric sensors or pH probe buffers. |
Applications
| Single-Supply Zero-Crossing Detector | Infrared Receivers for Remote Controls |
|---|---|
|
Use Scenario: Detecting AC signal polarity transitions in battery-powered remote control receivers using a single 3.3V supply. IC Role / Device Role / Timing Role: Quad op amp configured as four independent comparators with internal hysteresis via feedback resistors. Use Value: Eliminates need for dual supplies or level shifters; rail-to-rail output ensures clean logic-level transitions to MCU GPIO pins. |
Use Scenario: Amplifying weak modulated IR photodiode signals in consumer electronics remotes operating at 38kHz. IC Role / Device Role / Timing Role: First-stage transimpedance and bandpass amplification before demodulation; each channel isolates adjacent bands. Use Value: 7MHz bandwidth supports sharp 38kHz filtering; low input bias current prevents photodiode leakage-induced drift. |
| Sensor Signal Detection | Electronic Ignition Modules |
|
Use Scenario: Conditioning low-amplitude analog outputs from MEMS accelerometers or RTD bridges in industrial IoT nodes. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with offset trimming capability and noise-filtering RC networks. Use Value: ±0.3mV typical VOS and ±6µV/°C drift enable stable 12-bit+ resolution over wide temperature ranges. |
Use Scenario: Amplifying crankshaft position sensor signals in 12V automotive subsystems with extended temperature exposure. IC Role / Device Role / Timing Role: High-speed signal buffer between variable-reluctance sensor and microcontroller ADC input. Use Value: 20V/µs slew rate resolves fast edge transitions; 125°C rating ensures reliability near engine compartments. |
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 GBW (6.4MHz), higher VOS (±2mV max), wider supply (2.7–6V), same TSSOP-14 package. | Better PSRR (105dB) but lower drive strength (15mA short-circuit); less suited for heavy capacitive loads. | Preferred where power-supply noise rejection dominates over speed or capacitive-load robustness. |
| AD8604ARUZ | Higher precision (±600µV VOS max), lower noise (12nV/√Hz), same 7MHz GBW, but only rated to +105°C. | Superior DC accuracy for instrumentation, but not qualified for full –40°C to +125°C automotive use cases. | Chosen when sub-millivolt offset and low noise outweigh extended temperature qualification needs. |
Compared with TLV2464IDR and AD8604ARUZ, the MAX4487AUD+ uniquely balances wide-temperature operation, 100pF capacitive-load stability, and cost-effective quad integration - making it optimal for harsh-environment signal chains where reliability and layout simplicity are prioritized over ultra-low noise or ultra-low offset.
Availability
MAX4487AUD+ is available at Aetrix Electronics and suitable for portable communicators, electronic ignition modules, and infrared receiver designs requiring stable component supply across automotive and industrial production cycles.
Supply support for MAX4487AUD+ 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 MAX4484/MAX4486/MAX4487 family was engineered for cost-sensitive, single-supply signal conditioning in space-constrained and thermally aggressive environments - emphasizing rail-to-rail operation, capacitive-load resilience, and extended temperature reliability.
FAQ
What is the maximum capacitive load the MAX4487AUD+ can drive without instability?
The MAX4487AUD+ is unity-gain stable with capacitive loads up to 100pF, as confirmed in the Electrical Characteristics table and Typical Operating Characteristics (Figure 2). This specification applies across the full –40°C to +125°C temperature range and enables direct interface with ADC input capacitance, EMI filters, or long PCB traces without external isolation resistors - though adding a 10–50Ω series resistor improves margin for loads >100pF. The MAX4487AUD+ datasheet explicitly guarantees this performance.
Does the MAX4487AUD+ support true rail-to-rail input common-mode range?
No - the MAX4487AUD+ supports ground-sensing inputs (VCM down to VSS), but its input common-mode voltage range extends only to VDD – 1.3V (typical) or VDD – 1.4V (over temperature), as specified in the Electrical Characteristics tables. It does not accept inputs at the positive rail. However, its rail-to-rail *output* swing (within 30mV of VDD and 50mV of VSS into 2kΩ) makes it ideal for single-supply systems where output headroom is critical, such as driving SAR ADC references or LED drivers. This behavior is documented for the MAX4487AUD+ in both +25°C and –40°C to +125°C conditions.
What is the typical supply current per amplifier in the MAX4487AUD+ at +5.0V?
The MAX4487AUD+ draws 2.2mA typical supply current per amplifier at VDD = +5.0V, as stated in the "Electrical Characteristics-TA = +25°C" table. Total quiescent current for all four amplifiers is therefore ~8.8mA. At minimum supply (+2.7V), IDD drops to 1.9mA per amplifier. These values are measured under standard test conditions (VCM = 0V, VOUT = VDD/2, RL = ∞) and remain stable across temperature - critical for battery-operated portable communicators using the MAX4487AUD+.
Can the MAX4487AUD+ be used in a single-supply zero-crossing detector without external components?
Yes - the MAX4487AUD+ supports single-supply zero-crossing detection using only passive feedback resistors to set hysteresis, thanks to its ground-sensing inputs and rail-to-rail outputs. Its "no phase reversal on overdriven inputs" feature prevents erroneous output states during input overdrive, eliminating the need for external clamping diodes. Application circuits in the MAX4487AUD+ datasheet demonstrate this configuration driving MCU GPIOs directly. This capability is validated across the full –40°C to +125°C range.
Is the MAX4487AUD+ pin-compatible with other quad op amps in TSSOP-14 packages?
The MAX4487AUD+ uses a nonstandard pinout among quad op amps: VDD is on Pin 4, VSS on Pin 11, and outputs are distributed across Pins 3, 7, 8, and 14 - unlike industry-standard layouts (e.g., TLV2464, MCP6004). Therefore, it is not pin-compatible with generic TSSOP-14 quad op amps. PCB layout must follow the MAX4487AUD+ specific pin map shown in the "Pin Description" section. This arrangement optimizes channel separation and power-supply decoupling but requires dedicated footprint design.
MAX4487AUD+ 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:
- 20V/µs
- Gain Bandwidth Product:
- 7 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 2.2mA (x4 Channels)
- Current - Output / Channel:
- 33 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
MAX4487AUD+ FAQ
1.How can I place an order for MAX4487AUD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4487AUD+ 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 MAX4487AUD+ reliable?
The price and inventory of MAX4487AUD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4487AUD+ is usually 5 days.
3.What payment methods are accepted for MAX4487AUD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4487AUD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4487AUD+?
MAX4487AUD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4487AUD+ 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 MAX4487AUD+?
For technical support, including MAX4487AUD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4487AUD+ requirements.
6.How does Aetrix verify that MAX4487AUD+ is sourced from the original manufacturer or authorized distributors?
All MAX4487AUD+ 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 MAX4487AUD+ meets industry standards.
7.What is the process for return or replacement of MAX4487AUD+?
All MAX4487AUD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4487AUD+, 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 MAX4487AUD+ part is unused and in its original packaging.
Return procedure for MAX4487AUD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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