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Analog Devices Inc./Maxim Integrated MAX11202AEUB+T
- Part No.:
- MAX11202AEUB+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX11202AEUB+T.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,926
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Product details
Overview
MAX11202AEUB+T from Maxim Integrated is a 24-bit, single-channel, ultra-low-power delta-sigma analog-to-digital converter optimized for high-dynamic-range sensor measurement in 4–20mA industrial loops. It delivers 19-bit noise-free resolution at 120sps, consumes ≤300µA active current, and integrates a 2.4576MHz internal oscillator - enabling precision ADC functionality without external timing components.
For engineers reviewing the MAX11202AEUB+T datasheet, MAX11202AEUB+T pinout, MAX11202AEUB+T application, or MAX11202AEUB+T equivalent, this page provides verified technical context, real-world use-value mapping, validated alternatives, and supply-chain support tailored to battery-powered instrumentation, weigh-scale front-ends, and low-power industrial sensor nodes.
Technical Context
The MAX11202AEUB+T implements a third-order delta-sigma modulator with SINC4 digital filtering, delivering 80dB+ 50/60Hz line-noise rejection at its rated 120sps output rate. Its fully differential analog and reference inputs support ±VREF input ranges with 3ppm INL and no missing codes over –40°C to +85°C.
It operates from dual supplies (2.7–3.6V AVDD, 1.7–3.6V DVDD), supports on-demand offset/gain self-calibration via 26-clock command, and uses a 2-wire serial interface (SCLK + RDY/DOUT) - eliminating I²C/SPI overhead while maintaining deterministic timing for latency-sensitive embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit full-scale; guarantees 19-bit noise-free resolution at 120sps for stable, high-fidelity sensor digitization. |
| Power Consumption | <300µA total active current; enables multi-year operation on coin-cell batteries in portable instrumentation. |
| Line Noise Rejection | >80dB at 50Hz/60Hz; eliminates need for external notch filters in industrial AC-mains environments. |
| INL Error | ±3ppm FSR; ensures sub-1ppm/°C system-level accuracy drift when paired with stable references. |
| Internal Clock | 2.4576MHz fixed-frequency oscillator; removes crystal, load caps, and layout sensitivity from BOM and PCB. |
| Supply Range | AVDD: 2.7–3.6V; DVDD: 1.7–3.6V; allows direct interfacing with Li-ion, 3.3V, or 1.8V logic domains without level shifters. |
| ESD Protection | ±2kV HBM on all pins; sustains handling and field deployment in unshielded industrial sensor enclosures. |
Pinout & Package
MAX11202AEUB+T is housed in a lead(Pb)-free, RoHS-compliant 10-pin µMAX (FMAX) package - 3mm × 3mm, 0.5mm pitch, exposed pad for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Common ground reference | Analog/digital return path; requires low-impedance connection to minimize PSRR degradation. |
| 2 REFP | Differential reference positive input | Accepts voltage up to AVDD; sets full-scale range with REFN - defines ADC quantization step size. |
| 3 REFN | Differential reference negative input | Must be ≤ REFP; common-mode range 0V to AVDD; enables ratiometric measurements with bridge sensors. |
| 4 AINN | Negative fully differential analog input | Completes bipolar input pair with AINP; supports –VREF to +VREF range without external amplification. |
| 5 AINP | Positive fully differential analog input | High-Z input (10pF); directly interfaces RTDs, strain gauges, and thermocouples with minimal signal conditioning. |
| 6 AVDD | Analog supply voltage | 2.7–3.6V rail; powers modulator and reference circuitry; requires local 0.1µF bypass to GND. |
| 7 DVDD | Digital supply voltage | 1.7–3.6V rail; powers digital filter and serial interface; independent of AVDD for mixed-voltage system design. |
| 8 RDY/DOUT | Data-ready flag / serial data output | Open-drain output signals conversion completion and shifts out 24-bit two's complement data on SCLK rising edges. |
| 9 SCLK | Serial clock input | Accepts up to 5MHz external clock; controls data read timing, sleep activation, and calibration initiation. |
| 10 CLK | External clock input | Disables internal oscillator when driven; accepts 2.4576MHz clock for synchronization or jitter reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power operation | 230–300µA total active current enables >5-year battery life in handheld multimeters and wireless sensor nodes. |
| On-demand self-calibration | 26-clock command triggers full offset/gain calibration - critical for maintaining accuracy after temperature cycling or long idle periods. |
| 2-wire serial interface | Eliminates dedicated chip-select and data-in lines; reduces MCU GPIO count and simplifies isolation in 4–20mA loop designs. |
| Dual-supply flexibility | Independent AVDD/DVDD rails allow 3.3V analog sensing with 1.8V microcontroller I/O - minimizing level-shifter cost and board area. |
| Integrated 2.4576MHz oscillator | Removes external crystal and associated capacitors; cuts BOM cost by ≥$0.15 and improves production yield in high-volume sensor modules. |
Applications
| Temperature Sensing | Pressure Transduction |
|---|---|
|
Use Scenario: RTD-based temperature monitoring in HVAC control panels with 4–20mA loop output. IC Role / Device Role / Timing Role: Primary ADC digitizing Pt100/Pt1000 bridge outputs; performs ratiometric conversion using internal reference. Use Value: 19-bit noise-free resolution at 120sps captures <0.01°C changes; 80dB 50/60Hz rejection prevents mains-induced drift in factory-floor installations. |
Use Scenario: High-accuracy pressure sensing in portable medical infusion pumps. IC Role / Device Role / Timing Role: Low-power front-end ADC acquiring strain-gauge bridge signals; operates in burst mode synchronized to pump actuation. Use Value: ≤300µA active current extends single-charge battery life to >12 months; ±3ppm INL ensures calibrated pressure accuracy across 0–100% FS range. |
| Weigh Scale Front-End | Battery-Powered Data Logger |
|
Use Scenario: Precision weighing in retail POS scales with auto-zero and tare functions. IC Role / Device Role / Timing Role: High-resolution sigma-delta converter capturing load-cell mV outputs; executes on-demand calibration before each weighing cycle. Use Value: No missing codes and 24-bit resolution resolve sub-gram increments on 30kg platforms; internal oscillator eliminates timing drift vs. crystal aging. |
Use Scenario: Environmental monitoring node logging temperature/humidity every 10 seconds using coin-cell power. IC Role / Device Role / Timing Role: Ultra-low-power ADC operating in sleep mode between conversions; wakes on timer interrupt to acquire and transmit one sample. Use Value: <0.1µA sleep current enables >10-year operation on CR2032; 2-wire interface minimizes MCU pin usage and PCB routing complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-resolution, low-power delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS124S08IPW | 24-bit, 4-kSPS, SPI interface, integrated PGA and burnout current sources; higher power (350µA active). | Requires external PGA for low-level sensor signals; better suited for multi-channel, programmable-gain systems. | Select when needing on-chip gain control or >120sps throughput; not drop-in due to SPI protocol and pinout mismatch. |
| AD7172-2BRUZ | 32-bit, 2.5-kSPS, SPI interface, 50/60Hz rejection via programmable filter; 380µA active current. | Higher resolution but significantly higher power; includes diagnostic features (CRC, register check) for safety-critical use. | Choose for SIL-2 functional safety compliance or when >24-bit dynamic range is mandatory; incompatible 2-wire interface. |
Compared with ADS124S08IPW and AD7172-2BRUZ, the MAX11202AEUB+T uniquely balances ultra-low power (<300µA), 2-wire simplicity, and proven 120sps performance - making it optimal for cost-sensitive, single-channel, battery-constrained industrial sensor nodes where minimal GPIO count and long service life are primary design constraints.
Availability
MAX11202AEUB+T is available at Aetrix Electronics and suitable for industrial sensor nodes, portable instrumentation, and battery-powered weigh-scale systems requiring stable component supply, long-lifecycle assurance, and RoHS-compliant sourcing.
Supply support for MAX11202AEUB+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, and automotive applications - emphasizing integration, reliability, and low-power innovation.
The MAX11202AEUB+T belongs to Maxim's ultra-low-power delta-sigma ADC family, engineered specifically for high-accuracy, low-data-rate sensor digitization in energy-constrained 4–20mA loops and portable instrumentation.
FAQ
What is the maximum sampling rate supported by the MAX11202AEUB+T?
The MAX11202AEUB+T is factory-configured for a fixed output data rate of 120 samples per second (sps). This rate is determined by its internal 2.4576MHz oscillator and SINC4 filter architecture - no software or register configuration can alter this value. The device achieves 19-bit noise-free resolution at this rate, with guaranteed 80dB+ rejection of 50Hz/60Hz line interference when used with the specified timing.
Does the MAX11202AEUB+T require an external crystal or clock source?
No, the MAX11202AEUB+T includes a trimmed 2.4576MHz internal oscillator that requires no external components - eliminating crystals, load capacitors, and associated layout constraints. An external clock may be applied to the CLK pin to disable the internal oscillator and synchronize timing, but it is optional and not required for basic operation of the MAX11202AEUB+T.
How does the 2-wire serial interface of the MAX11202AEUB+T work?
The MAX11202AEUB+T uses SCLK (input) and RDY/DOUT (bidirectional open-drain) for communication. RDY/DOUT goes low when conversion data is ready; applying SCLK pulses shifts out 24-bit two's complement data MSB-first. A 25th pulse returns RDY/DOUT to high-idle; a 26th pulse initiates self-calibration. No separate data-in line or chip-select is needed - simplifying isolation and reducing MCU pin count.
What is the noise performance of the MAX11202AEUB+T at 120sps?
At its rated 120sps output rate, the MAX11202AEUB+T delivers 19-bit noise-free resolution and 2.1µVRMS input-referred noise (typical) with a 2.5V reference. This corresponds to ~720nVRMS effective noise floor - enabling detection of sub-microvolt signal changes in precision sensor applications such as RTD and strain-gauge measurement.
Can the MAX11202AEUB+T operate from a single 3.3V supply?
Yes, the MAX11202AEUB+T supports independent analog and digital supplies: AVDD may be set to 3.3V (within 2.7–3.6V), and DVDD may also be 3.3V (within 1.7–3.6V). This allows direct connection to standard 3.3V system rails without regulators or level shifters - provided both supplies are well-bypassed with 0.1µF capacitors near the package pins.
MAX11202AEUB+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 24
- Sampling Rate (Per Second):
- 120
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- Serial
- Configuration:
- ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 1.7V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 10-uMAX/uSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX11202AEUB+T FAQ
1.How can I place an order for MAX11202AEUB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11202AEUB+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 MAX11202AEUB+T reliable?
The price and inventory of MAX11202AEUB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11202AEUB+T is usually 5 days.
3.What payment methods are accepted for MAX11202AEUB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11202AEUB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11202AEUB+T?
MAX11202AEUB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11202AEUB+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 MAX11202AEUB+T?
For technical support, including MAX11202AEUB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11202AEUB+T requirements.
6.How does Aetrix verify that MAX11202AEUB+T is sourced from the original manufacturer or authorized distributors?
All MAX11202AEUB+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 MAX11202AEUB+T meets industry standards.
7.What is the process for return or replacement of MAX11202AEUB+T?
All MAX11202AEUB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX11202AEUB+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 MAX11202AEUB+T part is unused and in its original packaging.
Return procedure for MAX11202AEUB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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