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Analog Devices Inc./Maxim Integrated MAX9002ESA+T
- Part No.:
- MAX9002ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Amplifiers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX9002ESA+T.pdf
- Description:
- IC AMP COMP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,178
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Product details
Overview
MAX9002ESA+T from Maxim Integrated is a low-power, single-supply analog IC integrating a unity-gain stable op amp (1.25MHz GBW), an 185ns comparator, and no internal voltage reference - enabling external reference flexibility. It operates from +2.5V to +5.5V, draws 340µA quiescent current, delivers rail-to-rail outputs (±2.5mA op amp / ±4.0mA comparator), and supports ground-sensing inputs for both functions. 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 MAX9002ESA+T datasheet, MAX9002ESA+T pinout, MAX9002ESA+T application, or MAX9002ESA+T equivalent, key selection criteria include its absence of internal reference (vs. MAX9000/MAX9001), 8-pin SO package, shutdown-free operation, rail-to-rail output swing, and guaranteed 1.25MHz gain-bandwidth at unity gain - all validated across –40°C to +85°C.
Technical Context
The MAX9002ESA+T implements a MOS-input op amp with unity-gain stability, 1.25MHz gain-bandwidth product, and 0.85V/µs slew rate - optimized for precision DC-coupled amplification and fast settling in sensor signal chains. Its comparator features bipolar inputs, ±2mV built-in hysteresis, and rail-to-rail CMOS output with 185ns propagation delay at 50mV overdrive.
Unlike MAX9000/MAX9001, the MAX9002ESA+T omits the internal 1.230V reference and exposes the comparator's inverting input (CIN–) externally - allowing user-defined thresholding with external references or resistive dividers. Input common-mode range extends from VSS – 0.15V to VDD – 1.2V (op amp) and VSS – 0.15V to VDD – 1.1V (comparator).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +5.5V - enables direct interface with Li-ion, 3.3V, and 5V logic systems without level-shifting. |
| Quiescent Current | 340µA typical - supports battery-powered operation for >1 year in low-duty-cycle sensing applications. |
| Op Amp GBW | 1.25MHz - ensures stable unity-gain operation with <1% gain error up to ~100kHz for sensor amplification. |
| Comparator Propagation Delay | 185ns - provides sub-500ns system response for zero-crossing detection in motor control or power conversion. |
| Input Common-Mode Range | VSS – 0.15V to VDD – 1.2V (op amp); VSS – 0.15V to VDD – 1.1V (comparator) - supports ground-referenced signal conditioning. |
| Rail-to-Rail Output Swing | Within 1mV of rails at light load - maximizes dynamic range in single-supply data acquisition front-ends. |
| Input Offset Voltage | ±1.5mV max - enables accurate DC-level shifting and differential measurement without trimming. |
Pinout & Package
MAX9002ESA+T is housed in an 8-pin SO (Small Outline) package, surface-mount, with standard JEDEC MS-012AC footprint (5.0mm × 4.0mm, 1.27mm pitch). Pin 1 marked by notch or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (AOUT) | Op-Amp Output | Delivers rail-to-rail voltage with ±2.5mA drive capability; requires no external compensation for unity-gain stability. |
| 2 (AIN–) | Inverting Op-Amp Input | High-impedance MOS node; accepts signals down to VSS – 0.15V - suitable for current-to-voltage conversion. |
| 3 (AIN+) | Noninverting Op-Amp Input | High-impedance MOS node; enables high-side or ground-referenced sensing configurations. |
| 4 (VSS) | Negative Supply / Ground | Reference for all internal circuits; must be connected directly to PCB ground plane for noise immunity. |
| 5 (CIN–) | Inverting Comparator Input | Exposed comparator input - allows external reference or resistor-divider threshold setting (no internal reference present). |
| 6 (CIN+) | Noninverting Comparator Input | Bipolar input with low bias current (<8nA); accepts slow-moving or noisy signals with ±2mV hysteresis. |
| 7 (COUT) | Comparator Output | Rail-to-rail CMOS output sinking/sourcing ±4.0mA; eliminates supply glitches via reduced switching current. |
| 8 (VDD) | Positive Supply | Single +2.5V to +5.5V supply input; requires local 0.1µF ceramic bypass capacitor to VSS. |
Key Features
| Feature | Design Value |
|---|---|
| No internal voltage reference | Enables flexible threshold design using external references or precision dividers - avoids fixed 1.230V limitation. |
| Unity-gain stable op amp | 1.25MHz GBW with 0.85V/µs slew rate - supports stable amplification of DC and low-frequency sensor signals without external compensation. |
| 185ns comparator propagation delay | Guaranteed performance at 50mV overdrive - enables real-time zero-crossing detection in AC line monitoring and motor commutation. |
| Rail-to-rail I/O with ground-sensing inputs | Full signal swing from VSS to VDD and input operation down to VSS – 0.15V - simplifies single-supply system design without level shifters. |
| ±2mV comparator hysteresis | Internally trimmed hysteresis prevents oscillation on slow or noisy inputs - eliminates need for external positive feedback networks. |
Applications
| Photodiode Preamp | Zero-Crossing Detector |
|---|---|
Use Scenario: Amplifying weak current from reverse-biased photodiodes in optical encoders or ambient light sensors. IC Role / Device Role / Timing Role: Op amp configured as transimpedance amplifier; comparator monitors amplified output against adjustable threshold. Use Value: 340µA supply current enables multi-channel optical sensing in portable devices; rail-to-rail output maximizes ADC utilization. | Use Scenario: Detecting AC waveform zero crossings in universal motor controllers or power factor correction circuits. IC Role / Device Role / Timing Role: Comparator compares AC-derived signal to ground or external reference; op amp buffers/conditions input. Use Value: 185ns propagation delay ensures timing accuracy within ±1µs at 50/60Hz; ±2mV hysteresis rejects EMI-induced false triggers. |
| Smart Card Reader Interface | Infrared Receiver Front-End |
Use Scenario: Conditioning and threshold-detecting ISO 7816-3 compliant card signals in point-of-sale terminals. IC Role / Device Role / Timing Role: Op amp amplifies card clock/data; comparator validates signal levels per protocol timing windows. Use Value: Single +3.3V supply operation eliminates dual-rail requirement; exposed CIN– allows precise threshold alignment to card voltage tolerances. | Use Scenario: Demodulating 38kHz IR carrier bursts from remote controls in consumer electronics. IC Role / Device Role / Timing Role: Op amp band-limits and amplifies IR receiver output; comparator converts analog envelope to clean digital pulses. Use Value: 1.25MHz GBW supports >100kHz envelope bandwidth; rail-to-rail output ensures full logic swing into microcontroller GPIO. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op amp + comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9000ESA+ | Includes internal 1.230V ±1% reference; no CIN– pin - inverting comparator input tied internally to REF. | Suitable when fixed, low-drift reference is required and external thresholding is unnecessary. | Select MAX9000ESA+ only if internal reference simplifies BOM and layout; not drop-in compatible due to missing CIN– and different pinout. |
| MAX9005ESA+ | Same no-reference architecture as MAX9002ESA+T but decompensated for AV ≥10V/V; 8MHz GBW, 6.0V/µs slew rate. | Optimized for higher-gain, higher-speed amplification (e.g., active filters, gain stages), not unity-gain buffering. | Choose MAX9005ESA+ when closed-loop gain ≥10V/V is needed; incompatible for unity-gain op amp use due to instability. |
Compared with MAX9000ESA+, MAX9002ESA+T trades integrated reference for external threshold flexibility and adds CIN– accessibility; compared with MAX9005ESA+, it sacrifices high-speed gain-bandwidth for guaranteed unity-gain stability - making it the optimal choice for general-purpose single-supply amplification + comparison without reference constraints.
Availability
MAX9002ESA+T is available at Aetrix Electronics and suitable for photodiode preamplification, zero-crossing detection, and smart card reader interfaces requiring stable component supply, long-term industrial availability, and RoHS-compliant packaging.
Supply support for MAX9002ESA+T 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, communications, and consumer applications.
The MAX9000–MAX9005 family was engineered to integrate op amp, comparator, and reference functions into minimal space while maintaining low quiescent current - targeting portable instrumentation, sensor interfaces, and battery-constrained embedded systems.
FAQ
What is the operating temperature range for MAX9002ESA+T?
The MAX9002ESA+T is specified for operation from –40°C to +85°C. This industrial-grade temperature range is validated across all electrical parameters in the datasheet, including input offset voltage, supply current, and propagation delay. The 8-pin SO package provides thermal performance consistent with JEDEC standards for this range, and no derating is required up to +85°C ambient.
Does MAX9002ESA+T include an internal voltage reference?
No, MAX9002ESA+T does not include an internal voltage reference. Unlike MAX9000ESA+ or MAX9001ESA+, the MAX9002ESA+T omits the 1.230V bandgap reference and instead exposes the comparator's inverting input (CIN–) on Pin 5. This design enables users to apply external references or resistor dividers for custom thresholding - increasing flexibility in precision level-detection applications.
What is the maximum capacitive load the op amp output can drive while remaining stable?
The op amp in MAX9002ESA+T is stable driving capacitive loads up to 250pF. This specification is explicitly guaranteed in the datasheet under "Capacitive-Load Stability" and applies to unity-gain configurations. For loads exceeding 250pF, external isolation resistance (e.g., 10Ω–50Ω series resistor) is recommended to maintain phase margin and prevent peaking or oscillation.
Can MAX9002ESA+T be used in shutdown mode?
No, MAX9002ESA+T does not support shutdown mode. Shutdown functionality is exclusive to MAX9001 and MAX9004 variants, which feature a dedicated SHDN pin. The MAX9002ESA+T lacks both the SHDN pin and internal shutdown circuitry - it operates continuously whenever powered. Its 340µA quiescent current is optimized for low-power always-on operation rather than intermittent duty cycles.
What are the key differences between MAX9002ESA+T and MAX9005ESA+?
MAX9002ESA+T uses a unity-gain stable op amp (1.25MHz GBW, 0.85V/µs), while MAX9005ESA+ uses a decompensated op amp stable only for closed-loop gains ≥10V/V (8MHz GBW, 6.0V/µs). Both omit internal references and expose CIN–, but MAX9005ESA+ cannot be used in unity-gain configurations without risk of oscillation - making MAX9002ESA+T the correct choice for buffer, gain = 1, or low-gain sensor amplification.
MAX9002ESA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Amplifier, Comparator
- Applications:
- Smart Card
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
MAX9002ESA+T FAQ
1.How can I place an order for MAX9002ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9002ESA+T 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 MAX9002ESA+T reliable?
The price and inventory of MAX9002ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9002ESA+T is usually 5 days.
3.What payment methods are accepted for MAX9002ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9002ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9002ESA+T?
MAX9002ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9002ESA+T 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 MAX9002ESA+T?
For technical support, including MAX9002ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9002ESA+T requirements.
6.How does Aetrix verify that MAX9002ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX9002ESA+T 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 MAX9002ESA+T meets industry standards.
7.What is the process for return or replacement of MAX9002ESA+T?
All MAX9002ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9002ESA+T, 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 MAX9002ESA+T part is unused and in its original packaging.
Return procedure for MAX9002ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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