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Analog Devices Inc./Maxim Integrated MAX11125ATI+T
- Part No.:
- MAX11125ATI+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX11125ATI+T.pdf
- Description:
- IC ADC 12BIT SAR 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,825
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Product details
Overview
MAX11125ATI+T from Analog Devices is a 10-bit, 1 Msps, low-power SAR ADC with external reference support, 1.5 MHz full-linear bandwidth, and 70 dB SINAD at 250 kHz - designed for high-speed multichannel data acquisition in battery-powered industrial and medical instrumentation.
For engineers reviewing the MAX11125ATI+T datasheet, MAX11125ATI+T pinout, MAX11125ATI+T application, or MAX11125ATI+T equivalent, this device delivers verified 8-channel single-ended / 4-channel fully differential input flexibility, SampleSet™ programmable sequencing, internal FIFO buffering, and SPI/QSPI/MICROWIRE-compatible 16 MHz serial interface with no pipeline delay.
Technical Context
The MAX11125ATI+T operates in two clock modes: internal (with integrated 16-entry FIFO and SNR-enhancing averaging) and external (enabling SampleSet™ user-defined channel sequencing up to 256 steps). It supports flexible analog input configurations - single-ended, pseudo-differential, or fully differential - across all 8 channels with true differential track/hold architecture.
Its analog front-end accepts bipolar input ranges (±VREF+/2 or ±VREF+) via software-selectable RANGE bit, features ±0.4 LSB INL and ±0.4 LSB DNL over temperature, and maintains 70 dB SINAD up to 250 kHz while consuming only 5.4 mW at 3 V and 1 Msps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - delivers 1024 distinct output codes with no missing codes guaranteed. |
| Sampling Rate | 1 Msps - enables real-time capture of signals up to 500 kHz Nyquist frequency. |
| SINAD | 70 dB at 250 kHz - ensures high-fidelity digitization for precision sensor and control loop applications. |
| Power Dissipation | 5.4 mW at 3 V / 1 Msps - extends battery life in portable instruments without sacrificing speed. |
| Full-Linear Bandwidth | 1.5 MHz - preserves signal integrity for wideband transducer outputs and fast transient monitoring. |
| Input Configuration | 8-channel single-ended or 4-channel fully differential - simplifies PCB layout and noise rejection in mixed-signal systems. |
| Reference Support | External differential reference (1 V to VDD) - enables precise scaling and ratiometric measurement with external sensors. |
Pinout & Package
MAX11125ATI+T is housed in a 28-pin, 5 mm × 5 mm TQFN-EP package with exposed pad (Package Code T2855+3), optimized for thermal performance (θJA = 29°C/W) and space-constrained designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN0–AIN7 | Analog Input Channels | 8 configurable inputs supporting single-ended, pseudo-differential, or fully differential acquisition relative to REF−/AIN15 or common GND. |
| CNVST/AIN14 | Active-Low Conversion Start / Analog Input 14 | Edge-triggered conversion initiation; when not used as CNVST, functions as additional analog input (AIN14). |
| REF−/AIN15 | External Reference Negative / Analog Input 15 | Differential reference return node; doubles as 15th analog input in single-ended mode. |
| REF+ | External Positive Reference Input | Accepts 1 V to VDD reference voltage; requires 0.47 µF bypass capacitor to GND for stability. |
| VDD, OVDD, DGND, GND | Power and Ground Terminals | VDD (2.35–3.6 V analog supply), OVDD (1.5–3.6 V I/O supply), DGND (digital ground), and four GND pins for low-noise layout separation. |
| SCLK, CS, DIN, DOUT, EOC | 3-Wire SPI-Compatible Interface | 16 MHz serial interface with chip select, data in/out, and end-of-conversion flag - directly connects to MCU SPI peripherals without level shifters. |
Key Features
| Feature | Design Value |
|---|---|
| SampleSet™ Channel Sequencing | User-programmable sequence up to 256 steps reduces microcontroller overhead in multichannel polling and enables mixed-rate sampling. |
| 16-Entry Internal FIFO | Buffers conversions during high-speed acquisition, allowing asynchronous readout at lower clock rates or during CPU sleep cycles. |
| Internal Averaging Mode | Improves SNR for noisy sensor signals by averaging multiple samples per conversion result - configurable in internal clock mode. |
| AutoShutdown™ Power Management | Reduces supply current to 2 µA in full shutdown, enabling rapid wake-up (<2 µs) for event-driven sensing in energy-critical systems. |
| Bipolar Input Ranges | Software-selectable ±VREF+/2 or ±VREF+ ranges simplify AC-coupled signal conditioning and eliminate external op-amp level-shifting. |
Applications
| Industrial Process Monitoring | Portable Medical Sensors |
|---|---|
|
Use Scenario: Real-time acquisition of 4–8 pressure, temperature, and flow sensor outputs in PLC edge nodes. IC Role / Device Role / Timing Role: 10-bit SAR ADC with 1 Msps throughput and 1.5 MHz linear bandwidth captures fast transients in closed-loop control feedback paths. Use Value: SampleSet™ eliminates continuous MCU polling, reducing system power by >30% while maintaining deterministic timing for PID execution. |
Use Scenario: Battery-powered ECG and pulse oximetry modules requiring low-noise, multi-lead analog front-end digitization. IC Role / Device Role / Timing Role: 8-channel single-ended ADC with internal averaging and ±VREF+/2 bipolar range digitizes differential biopotential signals directly. Use Value: 70 dB SINAD at 250 kHz and 5.4 mW power enable >24-hour operation on coin-cell batteries without compromising diagnostic accuracy. |
| Automotive Battery Management | Test & Measurement Equipment |
|
Use Scenario: Cell voltage and temperature monitoring in 12S BMS units operating across -40°C to +125°C ambient. IC Role / Device Role / Timing Role: High-accuracy 10-bit ADC with ±0.4 LSB INL/DNL and AEC-Q100 qualified variants (e.g., MAX11128ATI/V+) ensures reliable cell balancing decisions. Use Value: External differential reference support enables ratiometric measurements immune to supply drift, critical for long-term SoC estimation. |
Use Scenario: Modular data loggers capturing vibration, acoustic, and thermal signatures in field-deployed condition monitoring gear. IC Role / Device Role / Timing Role: Low-latency SAR converter with no pipeline delay and 16 MHz SPI interface synchronizes precisely with FPGA-based trigger logic. Use Value: 16-entry FIFO decouples sampling from host communication, enabling gap-free 1 Msps streaming to SD card or USB buffer. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8684IPWR | 16-bit resolution, 500 kSPS, internal reference only, no SampleSet™ sequencing | Better DC accuracy but lower speed and fixed channel order; lacks FIFO and external ref flexibility | Select for high-precision, lower-speed industrial DAQ where resolution > speed; avoid if multichannel sequencing or external ref is required. |
| AD7476ARTZ-REEL7 | 12-bit, 1 MSPS, no FIFO, no internal averaging, 6-pin SOT-23 package | Smaller footprint and lower cost but limited to single-channel operation and no advanced power management | Select for space-constrained single-sensor nodes; avoid for multichannel, low-noise, or battery-life-critical designs. |
Compared with ADS8684IPWR and AD7476ARTZ-REEL7, the MAX11125ATI+T uniquely combines 10-bit/1-Msps performance with programmable sequencing, FIFO buffering, and dual-range bipolar inputs - making it optimal for compact, multichannel, battery-operated systems demanding both speed and configurability.
Availability
MAX11125ATI+T is available at Aetrix Electronics and suitable for industrial process monitoring, portable medical sensors, and automotive battery management systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX11125ATI+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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX11125ATI+T belongs to the MAX11120–MAX11128 family of low-power, high-speed SAR ADCs engineered for multichannel, battery-efficient data acquisition in harsh environments and portable instrumentation.
FAQ
What is the maximum sampling rate supported by the MAX11125ATI+T?
The MAX11125ATI+T supports a maximum sampling rate of 1 Msps (1 million samples per second) in both internal and external clock modes. At this rate, it achieves 70 dB SINAD at 250 kHz input frequency and consumes only 5.4 mW with a 3 V supply - confirmed in the Analog Devices datasheet (Rev 5, p. 2).
Does the MAX11125ATI+T support differential input configurations?
Yes, the MAX11125ATI+T supports fully differential input pairs (4-channel mode), pseudo-differential inputs relative to a common input, and single-ended inputs (8-channel mode). Its true differential track/hold architecture ensures matched acquisition timing and common-mode rejection - validated in the "Analog Multiplexer" section of the datasheet (p. 1).
How does the SampleSet™ feature work on the MAX11125ATI+T?
SampleSet™ is a user-programmable channel sequencer that allows loading custom acquisition sequences up to 256 steps into the MAX11125ATI+T's internal memory. In external clock mode, it autonomously cycles through defined channels without MCU intervention - reducing interface overhead and system noise, as detailed in the General Description (p. 1).
What power-saving modes are available on the MAX11125ATI+T?
The MAX11125ATI+T offers AutoShutdown™ (2 µA shutdown current), AutoStandby (1.6–2.6 mW), and full shutdown modes. Wake-up time from shutdown is under 2 µs, and internal averaging in FIFO mode further reduces effective power during low-SNR signal acquisition - specified in Electrical Characteristics (p. 4).
Is the MAX11125ATI+T compatible with standard SPI interfaces?
Yes, the MAX11125ATI+T features a 16 MHz, 3-wire SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface with CS, SCLK, DIN, and DOUT pins. It requires no external logic for connection to common microcontrollers - confirmed in the "Benefits and Features" list and Timing Characteristics table (p. 1, p. 4).
MAX11125ATI+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- 4, 8
- Input Type:
- Differential, Pseudo-Differential, Single Ended
- Data Interface:
- SPI
- 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:
- -
MAX11125ATI+T FAQ
1.How can I place an order for MAX11125ATI+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11125ATI+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 MAX11125ATI+T reliable?
The price and inventory of MAX11125ATI+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11125ATI+T is usually 5 days.
3.What payment methods are accepted for MAX11125ATI+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11125ATI+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11125ATI+T?
MAX11125ATI+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11125ATI+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 MAX11125ATI+T?
For technical support, including MAX11125ATI+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11125ATI+T requirements.
6.How does Aetrix verify that MAX11125ATI+T is sourced from the original manufacturer or authorized distributors?
All MAX11125ATI+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 MAX11125ATI+T meets industry standards.
7.What is the process for return or replacement of MAX11125ATI+T?
All MAX11125ATI+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX11125ATI+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 MAX11125ATI+T part is unused and in its original packaging.
Return procedure for MAX11125ATI+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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