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Analog Devices Inc./Maxim Integrated MAX11259AWX+T
- Part No.:
- MAX11259AWX+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 36-WFBGA, WLBGA
- Datasheet:
-
MAX11259AWX+T.pdf
- Description:
- IC ADC 24BIT 64KSPS 36WLP
- Quantity:
- Payment:
- Shipping:
Inventory:1,985
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Product details
Overview
MAX11259AWX+T from Analog Devices is a 24-bit, 6-channel delta-sigma ADC with integrated programmable gain amplifier (PGA), I²C interface, 16ksps max sample rate, and 6.2nV/√Hz input-referred noise-designed for precision DC measurements in battery-powered instrumentation and high-impedance sensor interfaces.
For engineers reviewing the MAX11259AWX+T datasheet, MAX11259AWX+T pinout, MAX11259AWX+T application, or MAX11259AWX+T equivalent, this device supports single or split analog supplies (±1.8V), offers user-programmable offset/gain calibration registers, delivers 133dB SNR at 50sps, and operates across –40°C to +125°C in a 3mm × 3mm WLP package.
Technical Context
The MAX11259AWX+T integrates a fourth-order delta-sigma modulator with a variable-decimation SINC digital filter, enabling precise DC and low-frequency signal acquisition. Its built-in sequencer automates channel scanning, conversion delay, and math operations for sensor monitoring without host intervention.
It features an internal 8.192MHz trimmed oscillator and supports external clock mode; the PGA provides eight selectable gains (1×–128×) with differential inputs, while REFP/REFN accept a 1.5V–VAVDD differential reference. Input common-mode range is VAVSS + 0.4V to VAVDD – 1.3V in PGA mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit delta-sigma architecture with 133dB SNR at 50sps - enables ultra-high dynamic range for weigh scales and pressure sensors |
| Sample Rate | Up to 16ksps (Fast Mode Plus); 1ksps default - balances speed and noise performance for precision DC measurement |
| PGA Noise Density | 6.2nV/√Hz (low-noise mode) - preserves signal integrity when interfacing with microvolt-level sensor outputs |
| Analog Supply | Single 2.7V–3.6V or split ±1.8V - supports bipolar input sampling below ground for industrial transducer interfaces |
| Digital Supply | 1.7V–2.0V or 2.0V–3.6V - ensures compatibility with 1.8V/2.5V/3.3V logic domains without level-shifting |
| Operating Temp | –40°C to +125°C - qualified for automotive cabin, industrial control, and wearable electronics environments |
| Package | 36-bump WLP, 3mm × 3mm - ultra-compact footprint for space-constrained portable and medical devices |
Pinout & Package
MAX11259AWX+T uses a 36-ball wafer-level package (WLP) with 6×6 bump array, RoHS-compliant, thermal resistance θJA = 38°C/W on four-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN0P–AIN5P / AIN0N–AIN5N | Differential analog inputs (6 channels) | Support fully differential, high-impedance sensor connections; PGA bypass option reduces power and noise |
| REFP / REFN | Differential voltage reference inputs | Accept 1.5V–VAVDD reference; common-mode range ≤ (VAVDD + VAVSS)/2 + 0.1V ensures stable ADC transfer function |
| CAPP / CAPN | PGA output filter nodes | Require 1nF C0G capacitor; define PGA bandwidth and noise shaping for optimal SNR |
| SDA / SCL | I²C serial interface | Support up to 1MHz Fast Mode Plus; tSU;DAT = 50ns ensures reliable timing with standard microcontrollers |
| RSTB / RDYB | Active-low reset and data-ready outputs | RSTB initiates power-on reset; RDYB signals valid conversion result - enables deterministic polling or interrupt-driven reads |
| GPO0–GPO2 / GPOGND | Current-sink general-purpose outputs | Each sinks up to 30mA; used for driving analog switches or LED indicators without external drivers |
| GPIO0/CLK / GPIO1/SYNC / GPIO2 | Configurable I/O pins | GPIO0/CLK accepts external 8.192MHz clock; GPIO1/SYNC synchronizes multiple MAX11259AWX+T devices for coherent sampling |
Key Features
| Feature | Design Value |
|---|---|
| Programmable PGA gain (1×–128×) | Enables direct interface with mV-range sensors (e.g., load cells, RTDs) while preserving full 24-bit dynamic range |
| User-accessible offset/gain registers | Allows on-device system-level calibration without host MCU involvement - reduces firmware overhead and BOM cost |
| Low-power operating modes | 2.2mA active current and 1µA sleep current extend battery life in portable instrumentation and wearables |
| Integrated sequencer with AutoScan | Automates multi-channel acquisition, inter-channel delay, and post-processing - eliminates real-time CPU scheduling |
| Robust fault detection | Overrange reporting in status register and sensor fault detect currents (1.1µA threshold) improve system reliability in harsh environments |
Applications
| Wearable Electronics | Weigh Scales |
|---|---|
Use Scenario: Continuous biopotential monitoring (ECG, EMG) in compact fitness bands with limited PCB area and battery capacity. IC Role / Device Role / Timing Role: Precision front-end ADC digitizing µV-level differential signals from dry electrodes, synchronized via GPIO1/SYNC across multiple sensor nodes. Use Value: 6.2nV/√Hz PGA noise floor and 133dB SNR at 50sps enable clean extraction of low-amplitude physiological waveforms without external amplification. |
Use Scenario: High-resolution weight measurement in commercial kitchen scales using 4-wire resistive bridge sensors. IC Role / Device Role / Timing Role: 6-channel delta-sigma converter acquiring bridge outputs with programmable gain and on-chip offset calibration to compensate for temperature drift. Use Value: 124dB SNR at 1000sps and ±1µV zero error after calibration ensure sub-gram resolution over full temperature range (–40°C to +125°C). |
| Pressure Sensors | Battery-Powered Instrumentation |
Use Scenario: Industrial HVAC pressure transducers requiring ratiometric measurement against bridge excitation and long-term stability. IC Role / Device Role / Timing Role: Differential ADC with internal PGA and reference rejection (110–130dB CMR) rejecting supply ripple and EMI in noisy plant environments. Use Value: 110dB 50/60Hz rejection and ±50nV/°C zero drift minimize recalibration frequency and maintain accuracy across seasonal temperature swings. |
Use Scenario: Portable multimeter or handheld test equipment powered by two AA batteries with >100-hour runtime requirement. IC Role / Device Role / Timing Role: Low-power 24-bit ADC performing auto-ranging, auto-zero, and linearization in firmware using internal calibration registers. Use Value: 1µA sleep current and 2.2mA active current allow continuous background sensing while preserving battery life; WLP package enables <100mm² total solution size. |
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 |
|---|---|---|---|
| ADS1263IPBSR | 32-bit resolution, SPI interface, 40ksps max, integrated VREF and burnout current source - higher precision but larger QFN package (5mm × 5mm) | Preferred for metrology-grade bench instruments requiring >140dB SNR and built-in diagnostics | Select ADS1263IPBSR when absolute accuracy and on-chip diagnostics outweigh size and I²C compatibility requirements. |
| AD7177-2BRUZ | 32-bit, SPI-only, 10ksps, 5.5nV/√Hz noise, ±10V input range - wider voltage range but no integrated PGA or I²C support | Suited for industrial PLC analog input modules needing wide input range and robust EMC immunity | Choose AD7177-2BRUZ for ±10V sensor interfaces where external signal conditioning and SPI master capability exist. |
Compared with ADS1263IPBSR and AD7177-2BRUZ, the MAX11259AWX+T uniquely combines I²C compatibility, ultra-small WLP packaging, integrated PGA with 128× gain, and sub-2.5mA active current - making it optimal for space- and power-constrained portable and wearable systems requiring 24-bit precision without external amplifiers.
Availability
MAX11259AWX+T is available at Aetrix Electronics and suitable for wearable electronics, weigh scales, pressure sensors, and battery-powered instrumentation requiring stable component supply, extended temperature operation, and long-term production continuity.
Supply support for MAX11259AWX+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX11259AWX+T belongs to Analog Devices' precision delta-sigma ADC product line, engineered specifically for ultra-low-power, high-resolution sensor signal acquisition in portable and harsh-environment applications.
FAQ
What is the maximum supported I²C clock frequency for MAX11259AWX+T?
The MAX11259AWX+T supports I²C Fast Mode Plus with a maximum SCL frequency of 1MHz. Timing parameters including tSU;DAT = 50ns and tLOW = 0.5µs are guaranteed across the full operating temperature range (–40°C to +125°C) and supply voltages (VDVDD = 1.7V–3.6V). This allows direct interfacing with modern microcontrollers without external level shifters or timing margin concerns.
Does MAX11259AWX+T support true bipolar input ranges?
Yes, the MAX11259AWX+T supports true bipolar input ranges of –VREF to +VREF when configured via the U/B bit in CTRL1 register. With a 3.6V AVDD and 3.6V reference, this yields ±3.6V differential input range. The device also operates from split ±1.8V analog supplies, enabling sampling below ground - critical for transducer interfaces with negative output swing.
How does the PGA affect input voltage range in MAX11259AWX+T?
In PGA mode, the MAX11259AWX+T specifies an input common-mode range of VAVSS + 0.4V to VAVDD – 1.3V and differential input range limited to ±VREF/gain. For example, at gain = 128 and VREF = 3.6V, the allowable differential input is ±28.1mV. Exceeding this range degrades linearity and may trigger overrange flags in the status register.
Can MAX11259AWX+T perform automatic channel sequencing without host intervention?
Yes, the MAX11259AWX+T includes an integrated sequencer that supports AutoScan mode. When enabled, it automatically cycles through up to six differential input channels with programmable inter-conversion delay, performs on-the-fly math operations (e.g., averaging), and stores results in dedicated data registers - all without CPU polling or firmware overhead.
What is the purpose of the GPO0–GPO2 pins on MAX11259AWX+T?
The GPO0–GPO2 pins on MAX11259AWX+T are current-sink general-purpose outputs, each capable of sinking up to 30mA into GPOGND. They are register-controlled and default to high-impedance state. These pins can drive analog switches (e.g., multiplexing sensor arrays), LEDs, or small relays - eliminating need for external driver circuitry in compact designs.
MAX11259AWX+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 36-WFBGA, WLBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- -
- Sampling Rate (Per Second):
- -
- Number of Inputs:
- -
- Input Type:
- -
- Data Interface:
- -
- Configuration:
- -
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- -
- Architecture:
- -
- Reference Type:
- -
- Voltage - Supply, Analog:
- -
- Voltage - Supply, Digital:
- -
- Features:
- -
- Operating Temperature:
- -
- Supplier Device Package:
- 36-WLP (2.96x2.96)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX11259AWX+T FAQ
1.How can I place an order for MAX11259AWX+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11259AWX+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 MAX11259AWX+T reliable?
The price and inventory of MAX11259AWX+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11259AWX+T is usually 5 days.
3.What payment methods are accepted for MAX11259AWX+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11259AWX+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11259AWX+T?
MAX11259AWX+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11259AWX+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 MAX11259AWX+T?
For technical support, including MAX11259AWX+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11259AWX+T requirements.
6.How does Aetrix verify that MAX11259AWX+T is sourced from the original manufacturer or authorized distributors?
All MAX11259AWX+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 MAX11259AWX+T meets industry standards.
7.What is the process for return or replacement of MAX11259AWX+T?
All MAX11259AWX+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX11259AWX+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 MAX11259AWX+T part is unused and in its original packaging.
Return procedure for MAX11259AWX+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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