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Analog Devices Inc./Maxim Integrated MAX9002EUA
- Part No.:
- MAX9002EUA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Amplifiers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX9002EUA.pdf
- Description:
- IC AMP COMP 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,889
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Product details
Overview
MAX9002EUA from Maxim Integrated is a low-power, single-supply analog IC integrating a unity-gain stable operational amplifier (1.25MHz GBW), an 185ns comparator, and no internal voltage reference - enabling external reference selection. It operates from +2.5V to +5.5V, draws 340µA quiescent current, and delivers rail-to-rail outputs for both amplifier and comparator sections. It is used in photodiode preamps, zero-crossing detectors, and smart card readers where compact integration and low supply current are critical.
For engineers reviewing the MAX9002EUA datasheet, MAX9002EUA pinout, MAX9002EUA application, or MAX9002EUA equivalent, this page provides verified functional context, validated pin roles, confirmed operating parameters across temperature and supply voltage, and real-world design implications for sensor signal conditioning and threshold detection circuits.
Technical Context
The MAX9002EUA implements a MOS-input op amp with unity-gain stability (1.25MHz gain-bandwidth, 0.85V/µs slew rate) and ground-sensing inputs extending from VSS − 0.15V to VDD − 1.2V. Its comparator uses bipolar inputs with ±2mV built-in hysteresis, 185ns propagation delay, and rail-to-rail CMOS output capable of ±4mA drive.
No internal reference is present - the CIN− pin is exposed externally, allowing flexible reference sourcing. The device lacks shutdown functionality and is specified for −40°C to +85°C operation in the 8-pin µMAX package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +5.5V - supports Li-ion, USB, and industrial 3.3V/5V rails without level-shifting. |
| Quiescent Current | 340µA typical at VDD = 5V - enables multi-year battery life in portable sensing nodes. |
| Op Amp GBW | 1.25MHz - sufficient for DC–100kHz signal conditioning in photodiode and IR receiver front-ends. |
| Comparator Propagation Delay | 185ns at 50mV overdrive - ensures fast response for zero-crossing and pulse-width detection. |
| Input Common-Mode Range | VSS − 0.15V to VDD − 1.2V (op amp); VSS − 0.15V to VDD − 1.1V (comparator) - supports ground-referenced sensor signals. |
| Output Swing | Rail-to-rail (±2.5mA op amp / ±4.0mA comparator drive) - maximizes dynamic range into 10kΩ loads. |
| Input Offset Voltage | ±1.5mV max - enables accurate thresholding in precision level-detection applications. |
Pinout & Package
MAX9002EUA is housed in an 8-pin µMAX package (3mm × 3mm, 0.5mm pitch), thermally enhanced with exposed pad. Pin 1 is marked by dot; pin numbering follows standard counter-clockwise convention from top-left corner when viewed top-down.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (AOUT) | Op-Amp Output | Unity-gain stable rail-to-rail output; drives capacitive loads up to 250pF without oscillation. |
| 2 (AIN−) | Inverting Op-Amp Input | High-impedance MOS input (IBIAS = ±2nA max); accepts signals down to VSS − 0.15V. |
| 3 (AIN+) | Noninverting Op-Amp Input | Same high-Z, rail-sensing input as AIN−; enables differential or single-ended configurations. |
| 4 (VSS) | Negative Supply / Ground | Reference node for all internal circuitry; must be low-impedance for noise immunity. |
| 5 (CIN−) | Inverting Comparator Input | Externally accessible - connects to user-selected reference or feedback network. |
| 6 (CIN+) | Noninverting Comparator Input | High-Z bipolar input; compatible with photodiode, thermistor, or DAC outputs. |
| 7 (COUT) | Comparator Output | Rail-to-rail CMOS output with ±4mA drive; includes ±2mV hysteresis for noise immunity. |
| 8 (VDD) | Positive Supply | Single +2.5V to +5.5V supply; requires local 0.1µF ceramic bypass to VSS. |
Key Features
| Feature | Design Value |
|---|---|
| Op Amp + Comparator Integration | Reduces board space and interconnect parasitics vs. discrete solutions - critical for µMAX footprint-constrained designs. |
| Ground-Sensing Inputs | Enables direct interfacing with 0V-referenced sensors (e.g., photodiodes, RTDs) without level-shifting circuitry. |
| 185ns Comparator Propagation Delay | Supports >5MHz digital edge detection in timing-critical applications like IR remote decoding and motor commutation. |
| Rail-to-Rail Outputs | Delivers full supply swing into 10kΩ loads - preserves SNR in ADC driver and logic-level translation stages. |
| No Phase Reversal on Overdrive | Prevents erroneous output states during transient overload - improves reliability in fault-tolerant sensor interfaces. |
Applications
| Photodiode Preamp | Zero-Crossing Detector |
|---|---|
Use Scenario: Amplifying weak current from reverse-biased photodiodes in IR receivers or smoke detectors. IC Role / Device Role / Timing Role: Op amp configured as transimpedance amplifier; comparator detects crossing of amplified signal against external reference. Use Value: 340µA total supply current enables always-on optical sensing; rail-to-rail output ensures full ADC utilization at 3.3V. |
Use Scenario: Converting AC line or oscillator waveforms into clean square waves for microcontroller timing or phase measurement. IC Role / Device Role / Timing Role: Comparator compares sine/triangle input to ground or mid-rail reference; hysteresis prevents chatter near zero. Use Value: 185ns delay enables accurate timing down to ~5.4MHz; ground-sensing inputs accept true 0V-referenced signals. |
| Smart Card Reader Interface | Sensor Signal Threshold Detection |
Use Scenario: Conditioning and level-shifting ISO 7816 card interface signals (e.g., I/O, CLK) in portable readers. IC Role / Device Role / Timing Role: Op amp buffers and amplifies card analog signals; comparator validates protocol timing windows. Use Value: Single +3.3V or +5V supply simplifies power architecture; µMAX package fits tight card-slot PCB layouts. |
Use Scenario: Detecting threshold breaches in temperature, pressure, or proximity sensors for alarm or control activation. IC Role / Device Role / Timing Role: Comparator monitors conditioned sensor output against programmable reference; op amp provides gain/offset adjustment. Use Value: External CIN− allows precise, temperature-stable reference selection; ±2mV hysteresis rejects EMI-induced false triggers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op amp + comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9000EUA | Includes internal 1.230V ±1% reference; same op amp/comparator specs; no shutdown. | Eliminates external reference component but fixes reference voltage; less flexible for custom thresholds. | Select when fixed 1.23V reference suffices and board area is constrained. |
| TLV3402IDR | Low-power dual comparator only (no op amp or reference); 550ns delay; 85µA per channel. | Requires external op amp and reference; better for ultra-low-power comparator-only use cases. | Select when only comparator functionality is needed and <100µA/channel supply current is mandatory. |
Compared with MAX9000EUA, MAX9002EUA trades integrated reference flexibility for external reference control and identical speed/power; compared with TLV3402IDR, it adds op amp functionality at higher quiescent current but reduces component count in mixed-signal front-ends.
Availability
MAX9002EUA is available at Aetrix Electronics and suitable for photodiode preamplification, zero-crossing detection, and smart card reader signal conditioning requiring stable component supply across industrial and consumer production cycles.
Supply support for MAX9002EUA 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 industrial, medical, and communications systems.
The MAX9000–MAX9005 family targets space-constrained, battery-sensitive applications needing integrated op amp + comparator functionality without sacrificing speed or DC accuracy.
FAQ
What is the function of the CIN− pin on the MAX9002EUA?
The CIN− pin on the MAX9002EUA is the inverting input of the comparator and is externally accessible - unlike MAX9000/MAX9003, which internally connect it to the reference. This allows designers to apply any external reference voltage or feedback signal, enabling flexible threshold-setting in sensor interfaces and level-detection circuits using the MAX9002EUA.
Does the MAX9002EUA include an internal voltage reference?
No, the MAX9002EUA does not include an internal voltage reference. Per the datasheet selector guide and detailed description, MAX9002 and MAX9005 variants omit the reference block. The MAX9002EUA relies on external reference sourcing via the CIN− pin, distinguishing it from MAX9000EUA and MAX9001EUA which integrate a 1.230V ±1% reference.
What is the maximum capacitive load the MAX9002EUA op amp can drive stably?
The MAX9002EUA op amp is stable with capacitive loads up to 250pF, as confirmed in the Electrical Characteristics table and Typical Operating Characteristics (TOC25). This specification applies under unity-gain configuration (AV = 1V/V) and ensures reliable operation when driving ADC input capacitors, long traces, or filtering networks without added isolation resistors.
Can the MAX9002EUA operate from a 2.5V supply?
Yes, the MAX9002EUA is fully specified for operation from +2.5V to +5.5V. Key parameters including input common-mode range (VSS − 0.15V to VDD − 1.2V), rail-to-rail output swing, and 340µA typical supply current are guaranteed across this range - making it suitable for direct connection to 2.5V logic or low-voltage battery systems without regulation.
Is the MAX9002EUA pin-compatible with other devices in the MAX9000 family?
The MAX9002EUA shares the same 8-pin µMAX package and pinout as MAX9000EUA and MAX9003EUA, but differs functionally at Pin 5 (CIN−): MAX9000/MAX9003 tie it internally to REF, while MAX9002 exposes it. Thus, MAX9002EUA is physically pin-compatible but not functionally drop-in - external circuitry must route CIN− appropriately when substituting into existing MAX9000EUA designs.
MAX9002EUA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Amplifier, Comparator
- Applications:
- Smart Card
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-uMAX/uSOP
MAX9002EUA FAQ
1.How can I place an order for MAX9002EUA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9002EUA 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 MAX9002EUA reliable?
The price and inventory of MAX9002EUA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9002EUA is usually 5 days.
3.What payment methods are accepted for MAX9002EUA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9002EUA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9002EUA?
MAX9002EUA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9002EUA 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 MAX9002EUA?
For technical support, including MAX9002EUA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9002EUA requirements.
6.How does Aetrix verify that MAX9002EUA is sourced from the original manufacturer or authorized distributors?
All MAX9002EUA 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 MAX9002EUA meets industry standards.
7.What is the process for return or replacement of MAX9002EUA?
All MAX9002EUA units undergo pre-shipment inspection (PSI). If there is an issue with MAX9002EUA, 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 MAX9002EUA part is unused and in its original packaging.
Return procedure for MAX9002EUA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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