My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX11126ATI+
- Part No.:
- MAX11126ATI+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX11126ATI+.pdf
- Description:
- IC ADC 8BIT SAR 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:106
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX11126ATI+ from Analog Devices is a 12-bit, 16-channel, 1Msps SAR analog-to-digital converter with external reference support, 1.5MHz full-linear bandwidth, and integrated SampleSet™ channel sequencing. It operates from 2.35V to 3.6V, consumes 5.4mW at 1Msps, and targets high-speed data acquisition in space-constrained, battery-powered systems.
For engineers reviewing the MAX11126ATI+ datasheet, MAX11126ATI+ pinout, MAX11126ATI+ application, or MAX11126ATI+ equivalent, key selection criteria include its 16-channel differential multiplexer configuration, internal FIFO for burst sampling, ±1 LSB INL/DNL accuracy over temperature, and SPI/QSPI/MICROWIRE-compatible 16MHz 3-wire interface.
Technical Context
The MAX11126ATI+ implements a successive-approximation register (SAR) architecture with true differential track-and-hold, supporting single-ended, fully differential, and pseudo-differential input configurations across all 16 channels. Its SampleSet™ technology enables user-defined channel sequences up to 256 entries without microcontroller intervention.
In internal clock mode, it integrates a 16-entry FIFO and supports on-chip averaging to improve SNR; in external clock mode, conversion timing is synchronized to a 0.16–16MHz SCLK with 1000ns conversion time at 16MHz. Aperture jitter is 30ps RMS, enabling 70dB SINAD at 250kHz input frequency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 distinct output codes with no missing codes over -40°C to +125°C. |
| Sampling Rate | 1Msps - supports real-time capture of signals up to 1.5MHz full-linear bandwidth (SINAD > 70dB). |
| INL / DNL | ±1 LSB / ±1 LSB - ensures monotonicity and end-point linearity critical for closed-loop control feedback. |
| Power Dissipation | 5.4mW at 3V/1Msps - enables portable instrumentation with extended battery life; drops to 4.5µW in full shutdown. |
| Analog Input Channels | 16 single-ended or 8 fully differential - configurable per channel via software, with common-mode input flexibility. |
| Serial Interface | 16MHz 3-wire SPI/QSPI/MICROWIRE - connects directly to 1.8V/2.5V/3.3V logic without level shifters. |
| Reference Support | External differential (1V to VDD) - allows precision scaling and noise rejection in noisy industrial environments. |
Pinout & Package
MAX11126ATI+ is housed in a 28-pin, 5mm × 5mm TQFN-EP package with exposed pad (Package Code T2855+3), optimized for thermal performance (θJA = 29°C/W) and PCB area efficiency.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN0–AIN13 | Analog Input Channels | 14 dedicated single-ended inputs; configurable as fully differential pairs or pseudo-differential relative to AIN15/REF−. |
| CNVST/AIN14 | Conversion Start / Analog Input 14 | Active-low hardware trigger for conversion; doubles as 15th analog input when not used as CNVST. |
| REF−/AIN15 | Reference Negative / Analog Input 15 | Differential reference return or 16th analog input; enables flexible reference coupling or expanded channel count. |
| REF+ | Positive Reference Input | Accepts 1V to VDD reference voltage; requires 0.47µF bypass capacitor for stable ADC accuracy. |
| VDD, OVDD, DGND, GND | Power & Ground Rails | VDD (2.35–3.6V analog supply), OVDD (1.5–3.6V I/O supply), separate DGND and analog GND pins minimize digital noise coupling. |
| SCLK, CS, DIN, DOUT, EOC | Serial Interface Signals | Standard 3-wire SPI interface; EOC asserts low only in internal clock mode to signal valid data readiness. |
Key Features
| Feature | Design Value |
|---|---|
| SampleSet™ Channel Sequencing | User-programmable 256-entry sequence eliminates MCU polling overhead and enables mixed-rate multichannel sampling. |
| 16-Entry FIFO Buffer | Allows high-speed acquisition bursts (e.g., 1Msps) followed by slower host readout-decouples sampling from communication timing. |
| Internal Averaging Mode | Improves SNR for noisy sensor signals without external firmware averaging; supported in internal clock mode only. |
| Flexible Input Configuration | Each channel independently set for single-ended, fully differential, or pseudo-differential operation relative to common input. |
| AutoShutdown™ & Fast Wake-up | Reduces current to 2µA in full shutdown; resumes conversion in <2 cycles-ideal for duty-cycled sensor systems. |
Applications
| High-Speed Data Acquisition Systems | Industrial Control Systems |
|---|---|
Use Scenario: Simultaneous monitoring of 16 sensor outputs (e.g., thermocouples, strain gauges) in PLC backplanes with sub-microsecond timing alignment. IC Role / Device Role / Timing Role: Primary 12-bit digitizer with hardware-triggered sampling and deterministic latency via CNVST and EOC signaling. Use Value: 1Msps throughput and ±1 LSB linearity ensure accurate representation of fast transients in motor current or pressure waveforms. |
Use Scenario: Closed-loop servo position feedback using multi-axis encoder and current-sense signals in factory automation drives. IC Role / Device Role / Timing Role: High-accuracy analog front-end for real-time control loop inputs, leveraging differential inputs to reject common-mode noise on long cables. Use Value: 70dB SINAD at 250kHz and 1.5MHz full-linear bandwidth preserve signal integrity for PID computation stability. |
| Battery-Powered Instruments | Medical Instrumentation |
Use Scenario: Portable ECG or multichannel biosignal recorder requiring >10-hour runtime on coin-cell or Li-ion battery. IC Role / Device Role / Timing Role: Low-power ADC subsystem with AutoShutdown between measurements and 5.4mW active power at 1Msps. Use Value: 2µA shutdown current and 16-entry FIFO enable energy-efficient burst acquisition without constant MCU wake-ups. |
Use Scenario: Patient-worn vital sign monitor acquiring ECG, SpO₂, and respiration signals with clinical-grade accuracy. IC Role / Device Role / Timing Role: Precision analog digitizer supporting bipolar input ranges (±VREF+/2 or ±VREF+) for bidirectional physiological signals. Use Value: ±1 LSB INL/DNL over -40°C to +125°C ensures calibration stability across environmental shifts during field use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8688IPWR | 8-channel, 16-bit, 1Msps, internal reference, SPI interface; higher resolution but no SampleSet or FIFO. | Lacks programmable channel sequencing and burst-buffer capability-requires more host CPU involvement for multichannel management. | Select when absolute resolution >12-bit and internal reference simplify design; avoid when dynamic channel scheduling or low-CPU-load operation is required. |
| AD7960BCPZ | 18-bit, 5Msps, pseudo-differential only, LVDS interface, no FIFO; requires external reference and complex layout. | Higher speed/resolution but incompatible pinout, interface, and power domain-no drop-in replacement possible. | Choose for ultra-high-fidelity applications like spectral analysis where 12-bit resolution is insufficient; not suitable for space/power-constrained portable designs. |
Compared with ADS8688IPWR and AD7960BCPZ, the MAX11126ATI+ uniquely balances 12-bit precision, 16-channel flexibility, on-chip FIFO buffering, and ultra-low active/shutdown power-making it optimal for embedded systems needing intelligent, autonomous multichannel sampling with minimal host resource usage.
Availability
MAX11126ATI+ is available at Aetrix Electronics and suitable for high-speed data acquisition systems, industrial control systems, and battery-powered instruments requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX11126ATI+ 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 designed specifically for low-power, high-channel-count data acquisition in portable and harsh-environment applications-emphasizing integration, configurability, and robustness over temperature.
FAQ
What is the maximum number of analog input channels supported by the MAX11126ATI+?
The MAX11126ATI+ supports up to 16 analog input channels: AIN0–AIN13 (14 pins), plus CNVST/AIN14 and REF−/AIN15, which double as AIN14 and AIN15 when not used for control/reference functions. All 16 channels are configurable as single-ended, fully differential, or pseudo-differential inputs.
Does the MAX11126ATI+ require an external reference voltage?
Yes, the MAX11126ATI+ requires an external differential reference: REF+ (1V to VDD) and REF− (−0.3V to +1V). It does not include an internal reference. A 0.47µF capacitor must be placed between REF+ and GND for stable operation and optimal DC accuracy.
How does the SampleSet™ feature work in the MAX11126ATI+?
SampleSet™ is a user-programmable channel sequencer that accepts up to 256 entries defining the order and repetition rate of analog input sampling. Once loaded, the MAX11126ATI+ autonomously executes the sequence without host intervention-reducing MCU overhead and system-level noise in multichannel applications.
What is the purpose of the EOC pin on the MAX11126ATI+?
The EOC (End of Conversion) pin on the MAX11126ATI+ asserts low only in internal clock mode to indicate that conversion data is ready on DOUT. In external clock mode, data validity is determined by SCLK timing-EOC remains inactive and should not be monitored.
Can the MAX11126ATI+ operate with a 1.8V digital I/O supply?
Yes, the MAX11126ATI+ supports OVDD from 1.5V to 3.6V, making it compatible with 1.8V digital systems. The 3-wire serial interface (CS, SCLK, DIN, DOUT) operates natively at 1.8V logic levels-no level-shifting circuitry is required when interfacing with 1.8V microcontrollers or FPGAs.
MAX11126ATI+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- 8, 15, 16
- 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:
- -
MAX11126ATI+ FAQ
1.How can I place an order for MAX11126ATI+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11126ATI+ 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 MAX11126ATI+ reliable?
The price and inventory of MAX11126ATI+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11126ATI+ is usually 5 days.
3.What payment methods are accepted for MAX11126ATI+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11126ATI+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11126ATI+?
MAX11126ATI+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11126ATI+ 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 MAX11126ATI+?
For technical support, including MAX11126ATI+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11126ATI+ requirements.
6.How does Aetrix verify that MAX11126ATI+ is sourced from the original manufacturer or authorized distributors?
All MAX11126ATI+ 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 MAX11126ATI+ meets industry standards.
7.What is the process for return or replacement of MAX11126ATI+?
All MAX11126ATI+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX11126ATI+, 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 MAX11126ATI+ part is unused and in its original packaging.
Return procedure for MAX11126ATI+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX11126ATI+ Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
