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Analog Devices Inc./Maxim Integrated MAX11203EEE+T
- Part No.:
- MAX11203EEE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX11203EEE+T.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX11203EEE+T from Maxim Integrated is a 16-bit, single-channel, ultra-low-power delta-sigma ADC with integrated GPIOs, internal oscillator, and optional input buffers - optimized for high-dynamic-range sensor measurement in 4–20mA industrial loops. It delivers 16-bit noise-free resolution at 10sps, consumes <300µA active current, and provides >100dB 50Hz/60Hz line-noise rejection using its SINC4 digital filter.
For engineers reviewing the MAX11203EEE+T datasheet, MAX11203EEE+T pinout, MAX11203EEE+T application, or MAX11203EEE+T equivalent, this page details confirmed specifications including programmable data rates (1–120sps), ±2kV ESD protection, dual supply operation (AVDD: 2.7–3.6V, DVDD: 1.7–3.6V), and SPI-configurable GPIO control for external multiplexer sequencing.
Technical Context
The MAX11203EEE+T implements a third-order delta-sigma modulator with SINC4 digital filtering, supporting both continuous and zero-latency single-cycle conversion modes. Its internal oscillator operates at 2.048MHz (LINEF=1) or 2.4576MHz (LINEF=0), enabling precise notch placement at 50Hz or 60Hz without external components.
It features fully differential analog inputs (AINP/AINN) and reference inputs (REFP/REFN), each configurable with independent signal and reference buffers to support high-impedance transducers while preserving linearity and dynamic range. Calibration is supported via on-demand offset/gain self-calibration and user-programmable system calibration registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit noise-free resolution at 10sps - guarantees no missing codes and full 16-bit effective precision under low-noise conditions. |
| Power Consumption | <300µA total active current (AVDD + DVDD) - enables multi-year battery life in portable instrumentation and remote sensors. |
| Line-Noise Rejection | >100dB min rejection at 50Hz/60Hz - eliminates need for external notch filters in industrial AC-line environments. |
| Input Configuration | Fully differential AINP/AINN and REFP/REFN with optional buffers - supports high-Z sources (e.g., RTDs, strain gauges) without gain/linearity degradation. |
| Data Interface | SPI-compatible serial interface with RDY/DOUT dual-function pin - simplifies microcontroller integration and reduces I/O count. |
| Operating Range | -40°C to +85°C ambient, AVDD 2.7–3.6V, DVDD 1.7–3.6V - suitable for harsh industrial and embedded environments. |
| ESD Protection | ±2kV HBM on all pins - enhances robustness in field-deployed systems with unshielded sensor cabling. |
Pinout & Package
MAX11203EEE+T is housed in a 16-pin QSOP package (5.3mm × 10.2mm, 0.635mm pitch), compatible with standard surface-mount assembly processes and offering thermal performance suitable for extended industrial temperature operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 16 | GPIO1–GPIO4 | Register-controlled digital I/Os - used for break-before-make control of external analog multiplexers (e.g., MAX313) without MCU GPIO overhead. |
| 4 | GND | Common analog/digital ground reference - requires low-impedance star connection to minimize noise coupling between domains. |
| 5, 6 | REFP / REFN | Differential reference inputs - accept external voltage references (0–VAVDD common-mode); buffer enablement reduces input current to 30nA. |
| 7, 8 | AINN / AINP | Fully differential analog inputs - support unipolar (0–VREF) or bipolar (±VREF) ranges; buffered mode isolates switched-capacitor sampling network. |
| 9 | AVDD | Analog supply (2.7–3.6V) - powers modulator, reference circuitry, and input buffers; separate from digital domain to suppress supply noise. |
| 10 | DVDD | Digital supply (1.7–3.6V) - powers SPI interface, GPIO logic, and digital filter; allows low-voltage MCU interfacing. |
| 11 | CS | Active-low chip select - enables SPI transaction framing and supports multi-device bus sharing. |
| 12 | DIN | Serial data input - accepts command and configuration bits on rising SCLK edge; supports register writes and calibration commands. |
| 13 | RDY/DOUT | Open-drain ready flag + serial data output - RDY = low indicates conversion completion; DOUT shifts MSB-first on falling SCLK edge. |
| 14 | SCLK | Serial clock input - up to 5MHz; defines SPI timing for register access and data readout. |
| 15 | CLK | External clock input - optional 2.048MHz/2.4576MHz/2.25275MHz source for enhanced 50Hz/60Hz/both rejection; bypasses internal oscillator. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power operation | 235–300µA total active current and <2µA sleep current - extends battery life in portable and wireless sensor nodes. |
| Integrated SINC4 digital filter | Guarantees >100dB 50Hz/60Hz rejection at 1–15sps - removes need for external analog filtering in industrial monitoring. |
| Configurable input buffering | Independent SIGBUF/REFBUF control - enables use with high-impedance sensors (e.g., thermocouples, piezoresistive bridges) without accuracy loss. |
| On-demand calibration | Self-calibration (200ms) and system calibration (100ms) via SPI - achieves ≤1µV offset and ≤2ppm full-scale error without factory trim. |
| Four programmable GPIOs | Controllable via CTRL2 register - drives external analog switches for multi-channel scanning with deterministic timing and no MCU intervention. |
Applications
| Industrial 4–20mA Loop Sensors | Portable Precision Weigh Scales |
|---|---|
|
Use Scenario: High-accuracy temperature or pressure sensing in factory automation systems where analog signals are transmitted over long cables susceptible to 50/60Hz pickup. IC Role / Device Role / Timing Role: Primary ADC digitizing conditioned sensor outputs; internal oscillator and SINC4 filter provide synchronous, jitter-immune sampling aligned to line frequency. Use Value: Eliminates external anti-aliasing filters and reduces BOM cost while maintaining 16-bit integrity in electrically noisy plant-floor environments. |
Use Scenario: Battery-powered handheld scales requiring stable weight readings despite variable ambient temperature and limited power budget. IC Role / Device Role / Timing Role: Low-noise, low-drift ADC capturing load-cell mV-level outputs; programmable gain and self-calibration compensate for thermal drift and sensor nonlinearity. Use Value: Enables 10,000+ count resolution with sub-gram accuracy and multi-year battery life due to <300µA active current and <2µA sleep mode. |
| Remote Environmental Monitoring Nodes | Low-Power Industrial Data Loggers |
|
Use Scenario: Solar-powered air quality sensors deployed outdoors, measuring gas concentrations via electrochemical cells with high output impedance. IC Role / Device Role / Timing Role: Signal-conditioning ADC with buffered inputs preserving signal integrity; GPIOs sequence multiple sensor channels in scheduled intervals. Use Value: Maintains 16-bit NFR across -40°C to +85°C while drawing minimal energy - critical for intermittent solar harvesting and duty-cycled operation. |
Use Scenario: DIN-rail mounted loggers acquiring vibration, current, and temperature data from rotating machinery over weeks without maintenance. IC Role / Device Role / Timing Role: Multi-sensor hub ADC with SPI interface and GPIO-driven mux control; internal oscillator ensures consistent sampling timing across supply variations. Use Value: Reduces firmware complexity and external component count by integrating calibration, filtering, and channel control in one IC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power, high-resolution ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS124S08IPW | 24-bit resolution, 4-channel MUX, integrated PGA (1–128), but higher active current (350µA) | Better suited for multi-sensor systems needing higher resolution; less optimal for strict <300µA constraints | Select when 24-bit ENOB and on-chip PGA outweigh power penalty; verify layout compatibility with TSSOP-20 vs. QSOP-16 |
| AD7172-2BRUZ | 24-bit, dual-channel, 31.25kSPS max, 385µA active current, no GPIOs, larger LFCSP-24 package | Targeted at high-speed precision lab equipment, not ultra-low-power field sensors | Choose only if higher throughput or dual-channel capability is mandatory; avoid for battery or loop-powered designs |
Compared with ADS124S08IPW and AD7172-2BRUZ, the MAX11203EEE+T uniquely balances 16-bit noise-free resolution, sub-300µA consumption, integrated GPIOs for mux control, and QSOP-16 footprint - making it optimal for space- and power-constrained industrial sensor nodes where 16-bit fidelity suffices.
Availability
MAX11203EEE+T is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable instrumentation, and battery-powered weigh scales requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX11203EEE+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 communications applications - emphasizing high integration, low power, and robust performance.
The MAX11203EEE+T belongs to Maxim's ultra-low-power precision ADC family, engineered specifically for high-dynamic-range sensor digitization in resource-constrained industrial and portable systems - prioritizing power efficiency without sacrificing DC/AC accuracy.
FAQ
What is the maximum data rate achievable with the MAX11203EEE+T in single-cycle mode?
The MAX11203EEE+T supports up to 120sps in single-cycle conversion mode when configured with LINEF = 0 (2.4576MHz internal oscillator). At this rate, it delivers true zero-latency output with 16-bit noise-free resolution and maintains >100dB 60Hz rejection. The device also supports continuous conversion mode at up to 480sps, though with three-cycle settling latency.
Does the MAX11203EEE+T include an internal reference voltage?
No, the MAX11203EEE+T does not include an internal reference voltage. It requires an external differential reference applied across REFP and REFN pins, with common-mode range from 0V to VAVDD. However, it does feature an internal high-accuracy oscillator (2.048MHz or 2.4576MHz) that eliminates the need for external timing components.
How do the GPIOs on the MAX11203EEE+T function in a multiplexer control application?
The four GPIOs (GPIO1–GPIO4) on the MAX11203EEE+T are SPI-configurable digital outputs used to drive external analog switches like the MAX313. By writing to the CTRL2 register, users can set direction and logic states to implement break-before-make sequencing - enabling reliable multi-channel scanning without MCU GPIO overhead or timing-critical firmware.
What calibration options are available for the MAX11203EEE+T, and how long do they take?
The MAX11203EEE+T supports three calibration levels: self-calibration (200ms, corrects internal offset/gain), system zero-scale calibration (100ms, uses external zero input), and system full-scale calibration (100ms, uses external full-scale input). All are initiated via SPI command byte with CAL1/CAL0 bits and store results in dedicated on-chip registers accessible for readback or reuse.
Can the MAX11203EEE+T operate with different analog and digital supply voltages?
Yes, the MAX11203EEE+T supports independent analog and digital supplies: AVDD ranges from 2.7V to 3.6V for the modulator and reference circuitry, while DVDD operates from 1.7V to 3.6V for the SPI interface and GPIO logic. This allows interfacing with low-voltage MCUs (e.g., 1.8V) while maintaining high analog performance - with strict decoupling recommended per datasheet guidelines.
MAX11203EEE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 480
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI
- 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:
- PGA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-QSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX11203EEE+T FAQ
1.How can I place an order for MAX11203EEE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11203EEE+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 MAX11203EEE+T reliable?
The price and inventory of MAX11203EEE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11203EEE+T is usually 5 days.
3.What payment methods are accepted for MAX11203EEE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11203EEE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11203EEE+T?
MAX11203EEE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11203EEE+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 MAX11203EEE+T?
For technical support, including MAX11203EEE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11203EEE+T requirements.
6.How does Aetrix verify that MAX11203EEE+T is sourced from the original manufacturer or authorized distributors?
All MAX11203EEE+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 MAX11203EEE+T meets industry standards.
7.What is the process for return or replacement of MAX11203EEE+T?
All MAX11203EEE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX11203EEE+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 MAX11203EEE+T part is unused and in its original packaging.
Return procedure for MAX11203EEE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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