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Analog Devices Inc./Maxim Integrated MAX11128ATI+G3U
- Part No.:
- MAX11128ATI+G3U
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX11128ATI+G3U.pdf
- Description:
- IC ADC 12BIT SAR 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,956
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Product details
Overview
MAX11128ATI+G3U from Analog Devices is a 12-bit, 16-channel, 1Msps SAR ADC with external reference support, 1.5MHz full-linear bandwidth, ±1 LSB INL/DNL, and 70dB SINAD at 250kHz - designed for high-speed data acquisition in battery-powered industrial and medical instrumentation.
For engineers reviewing the MAX11128ATI+G3U datasheet, MAX11128ATI+G3U pinout, MAX11128ATI+G3U application, or MAX11128ATI+G3U equivalent, this page delivers verified electrical specs, real-world timing behavior, FIFO-aided burst sampling capability, SampleSet™ channel sequencing, and thermal performance data for -40°C to +125°C operation.
Technical Context
The MAX11128ATI+G3U implements a successive-approximation register (SAR) architecture with dual clock modes: internal clock (enabling 16-entry FIFO buffering and on-chip averaging) and external clock (supporting SampleSet™ programmable channel sequencing up to 256 entries). It uses true differential track-and-hold with configurable input types - single-ended (16 ch), fully differential (8 ch), or pseudo-differential (15 ch relative to common).
Its analog front-end supports two software-selectable bipolar input ranges (±VREF+/2 or ±VREF+) and operates from 2.35V–3.6V VDD with 1.5V–3.6V OVDD, enabling direct interfacing to 1.8V/2.5V/3.3V digital systems. The 16MHz 3-wire SPI/QSPI/MICROWIRE-compatible interface eliminates level-shifting requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - delivers 4096 distinct output codes with no missing codes over temperature. |
| Sampling Rate | 1 Msps - enables real-time capture of signals up to 1.5 MHz full-linear bandwidth (SINAD > 70 dB). |
| DC Accuracy | ±1 LSB INL, ±1 LSB DNL - ensures monotonicity and minimal code-width variation across full scale. |
| Dynamic Performance | 70 dB SINAD at 250 kHz input - supports high-fidelity signal digitization in closed-loop control and sensor monitoring. |
| Power Consumption | 5.4 mW at 1 Msps (3V supply) - extends battery life in portable instruments without sacrificing speed. |
| Reference Support | External differential reference (1V to VDD) - allows precision scaling independent of supply rails. |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive, industrial PLC, and harsh-environment medical use. |
Pinout & Package
MAX11128ATI+G3U is housed in a 28-pin, 5mm × 5mm TQFN-EP package (Package Code T2855+3) with exposed pad connected to GND for optimal thermal and noise performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN0–AIN13 | Analog Input Channels | 16-channel configurable inputs supporting single-ended, fully differential, or pseudo-differential modes. |
| CNVST/AIN14 | Conversion Start / Analog Input 14 | Active-low trigger for conversion initiation; doubles as 14th analog input when not used as CNVST. |
| REF-/AIN15 | Reference Negative / Analog Input 15 | Differential reference return path; also serves as 15th analog input in flexible configuration mode. |
| REF+ | Positive Reference Input | Accepts external reference voltage (1V to VDD); requires 0.47µF bypass capacitor to GND. |
| VDD | Analog Power Supply | 2.35V–3.6V supply for core analog circuitry; bypassed with 10µF || 0.1µF to GND. |
| OVDD | Digital I/O Supply | 1.5V–3.6V supply for serial interface; enables direct connection to 1.8V/2.5V/3.3V logic. |
| SCLK, DIN, DOUT, CS | 3-Wire SPI Interface | 16MHz-compatible serial interface with no external logic required; DOUT active on SCLK falling edge. |
| EOC | End-of-Conversion Output | Active-low pulse signaling valid data ready (internal clock mode only); latency ≤6.2 µs. |
Key Features
| Feature | Design Value |
|---|---|
| SampleSet™ Channel Sequencing | User-programmable 256-step analog input sequence reduces microcontroller overhead and enables mixed-rate multichannel sampling. |
| 16-Entry FIFO Buffer | Allows high-speed acquisition bursts followed by asynchronous readout at lower clock rates - decouples sampling from host timing constraints. |
| Internal Averaging Mode | Improves SNR for noisy input signals without external firmware averaging - effective for low-SNR sensor interfaces. |
| AutoShutdown™ & Fast Wake-up | Reduces supply current to 2 µA in full shutdown; resumes conversion within 2 clock cycles - ideal for duty-cycled sensing. |
| Flexible Input Configuration | Per-channel selection of unipolar/bipolar range and single-ended/differential/pseudo-differential topology - simplifies mixed-signal system design. |
Applications
| High-Speed Data Acquisition Systems | Industrial Control Systems |
|---|---|
Use Scenario: Simultaneous sampling of multiple voltage/current sensors in motor drive feedback loops or power quality monitors. IC Role / Device Role / Timing Role: 16-channel SAR ADC performing synchronized 1Msps conversions with 1.5MHz linear bandwidth and low aperture jitter (30ps RMS). Use Value: Enables accurate reconstruction of fast transients and harmonics up to 250kHz while maintaining <70dB SINAD - critical for compliance testing and predictive maintenance. |
Use Scenario: Analog input conditioning in programmable logic controllers (PLCs) handling thermocouple, RTD, and 4–20mA loop signals across wide temperature ranges. IC Role / Device Role / Timing Role: Precision 12-bit ADC with ±1 LSB INL, internal averaging, and -40°C to +125°C operation ensuring stable metrology in factory-floor environments. Use Value: Eliminates external calibration drift compensation and reduces BOM count via integrated reference support and flexible input configuration. |
| Medical Instrumentation | Battery-Powered Instruments |
Use Scenario: Portable ECG or patient vital sign monitors requiring low-noise, multi-lead analog acquisition with long battery runtime. IC Role / Device Role / Timing Role: Low-power 12-bit ADC delivering 70dB SINAD at 250kHz while consuming only 5.4mW at 1Msps and 2µA in shutdown. Use Value: Supports FDA-grade signal fidelity and >100-hour battery life in handheld diagnostics without compromising sampling fidelity or channel count. |
Use Scenario: Handheld multimeters, environmental sensors, or field test equipment operating from coin cells or Li-ion batteries. IC Role / Device Role / Timing Role: Ultra-low-power SAR ADC with AutoShutdown™, 1.5V–3.6V OVDD compatibility, and 2.35V minimum VDD operation. Use Value: Enables direct interface to 1.8V microcontrollers and extends operational time between charges - validated across full industrial temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit, multichannel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8688IPWR | 8-channel, 16-bit, 100ksps, internal reference, SPI interface; higher resolution but lower speed and channel count. | Better suited for precision DC measurements (e.g., strain gauge bridges) rather than high-frequency transient capture. | Select when absolute accuracy > speed; avoid if >1Msps or >12 channels required. |
| AD7960BCPZ-RL7 | 18-bit, 5Msps, 8-channel, external reference, LVDS/CMOS interface; higher speed/resolution but 40mW power and larger LFCSP package. | Targets high-end test equipment and radar; incompatible with battery-powered or space-constrained designs. | Choose only for lab-grade dynamic range; not viable for portable or thermally constrained deployments. |
Compared with ADS8688IPWR and AD7960BCPZ-RL7, the MAX11128ATI+G3U uniquely balances 12-bit precision, 16-channel count, 1Msps throughput, and sub-6mW power - making it optimal for embedded industrial and portable medical systems where integration density and energy efficiency are non-negotiable.
Availability
MAX11128ATI+G3U is available at Aetrix Electronics and suitable for high-speed data acquisition systems, industrial control systems, and battery-powered instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX11128ATI+G3U 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX11120–MAX11128 family was engineered for low-power, high-channel-count data acquisition in space- and energy-constrained applications - emphasizing integrated features like SampleSet™ sequencing and FIFO buffering to reduce system-level complexity.
FAQ
What is the maximum sample rate supported by the MAX11128ATI+G3U?
The MAX11128ATI+G3U supports a maximum conversion rate of 1 Msps (1 million samples per second) in both internal and external clock modes. At this rate, the device maintains 1.5MHz full-linear bandwidth (SINAD > 70dB) and achieves conversion times of 5.9µs (internal clock) or 1000ns (external 16MHz clock), enabling real-time capture of fast analog transients.
Does the MAX11128ATI+G3U support differential input configurations?
Yes, the MAX11128ATI+G3U supports fully differential input pairs (8 channels), pseudo-differential inputs (15 channels relative to a common input), and single-ended inputs (16 channels). Its true differential track-and-hold architecture ensures matched acquisition timing and rejection of common-mode noise - critical for high-accuracy sensor interfaces.
How does the SampleSet™ feature work in the MAX11128ATI+G3U?
The SampleSet™ feature in the MAX11128ATI+G3U allows users to define and load a custom 256-step analog input channel sequence into on-chip memory. This enables autonomous, mixed-rate sampling (e.g., high-frequency vibration + low-frequency temperature) without continuous microcontroller intervention - reducing system noise, CPU load, and overall power consumption.
What power supply requirements must be met for reliable operation of the MAX11128ATI+G3U?
The MAX11128ATI+G3U requires two independent supplies: VDD (2.35V–3.6V) for analog circuitry and OVDD (1.5V–3.6V) for digital I/O. VDD must be bypassed with 10µF || 0.1µF capacitors to GND; REF+ requires a 0.47µF capacitor to GND. These ensure stable reference integrity, low-noise conversion, and compatibility with 1.8V/2.5V/3.3V host systems.
Is the MAX11128ATI+G3U suitable for automotive applications?
The MAX11128ATI+G3U operates across -40°C to +125°C and is specified for industrial environments. While not AEC-Q100 qualified itself, its variant MAX11128ATI/V+ is AEC-Q100 Grade 2 qualified. For automotive use, designers should select the /V+ variant - the MAX11128ATI+G3U is intended for industrial, medical, and portable instrumentation where extended temperature range and low power are prioritized.
MAX11128ATI+G3U Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- 16
- Input Type:
- Pseudo-Differential, Single Ended
- Data Interface:
- SPI, DSP
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.35V ~ 3.6V
- Voltage - Supply, Digital:
- 2.35V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 28-TQFN (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX11128ATI+G3U FAQ
1.How can I place an order for MAX11128ATI+G3U through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11128ATI+G3U 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 MAX11128ATI+G3U reliable?
The price and inventory of MAX11128ATI+G3U are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11128ATI+G3U is usually 5 days.
3.What payment methods are accepted for MAX11128ATI+G3U?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11128ATI+G3U transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11128ATI+G3U?
MAX11128ATI+G3U orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11128ATI+G3U 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 MAX11128ATI+G3U?
For technical support, including MAX11128ATI+G3U datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11128ATI+G3U requirements.
6.How does Aetrix verify that MAX11128ATI+G3U is sourced from the original manufacturer or authorized distributors?
All MAX11128ATI+G3U 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 MAX11128ATI+G3U meets industry standards.
7.What is the process for return or replacement of MAX11128ATI+G3U?
All MAX11128ATI+G3U units undergo pre-shipment inspection (PSI). If there is an issue with MAX11128ATI+G3U, 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 MAX11128ATI+G3U part is unused and in its original packaging.
Return procedure for MAX11128ATI+G3U:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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