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Analog Devices Inc./Maxim Integrated MAX11128ATI+TG3U
- Part No.:
- MAX11128ATI+TG3U
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX11128ATI+TG3U.pdf
- Description:
- IC ADC 12BIT SAR 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,213
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Product details
Overview
MAX11128ATI+TG3U 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 - deployed in high-speed industrial control and battery-powered data acquisition systems.
For engineers reviewing the MAX11128ATI+TG3U datasheet, MAX11128ATI+TG3U pinout, MAX11128ATI+TG3U application, or MAX11128ATI+TG3U equivalent, this page delivers verified electrical specs, TQFN-28 package mapping, SampleSet™ channel sequencing capability, internal FIFO operation, and AEC-Q100–qualified alternative context.
Technical Context
The MAX11128ATI+TG3U implements a successive-approximation register (SAR) architecture with dual clock modes: internal clock (enabling integrated 16-entry FIFO and programmable averaging) and external clock (supporting SampleSet™ user-defined channel sequencing up to 256 entries). It uses true differential track-and-hold with flexible input configuration across all 16 analog inputs.
It supports unipolar and bipolar input ranges (±VREF+/2 or ±VREF+) via software-selectable RANGE bit, features 3-wire SPI/QSPI/MICROWIRE-compatible serial interface operating up to 16MHz, and integrates AutoShutdown™ with 2μA full-shutdown current for ultra-low-power operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes for precision measurement in sensor interfaces and closed-loop control. |
| Sampling Rate | 1Msps - enables real-time capture of fast transients in motor control feedback or vibration monitoring. |
| Full-Linear Bandwidth | 1.5MHz - maintains >70dB SINAD up to 1.5MHz input frequency, critical for wideband signal digitization. |
| INL / DNL | ±1 LSB - ensures monotonicity and end-point accuracy without missing codes over -40°C to +125°C. |
| Power Dissipation | 5.4mW at 3V/1Msps - supports extended runtime in portable instrumentation and low-thermal-footprint embedded designs. |
| Reference Input | External differential (1V to VDD) - allows system-level reference sharing and improved noise rejection vs. internal reference. |
| Serial Interface | 16MHz 3-wire SPI-compatible - connects directly to 1.8V/2.5V/3.3V microcontrollers without level shifters. |
Pinout & Package
The MAX11128ATI+TG3U is housed in a 28-pin, 5mm × 5mm TQFN-EP package with exposed pad (EP) connected to GND for thermal and noise performance. Pin compatibility follows MAX11126–MAX11128 16-channel variant layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN0–AIN13 | Analog Input Channels | 14 single-ended or 7 fully differential input pairs; configurable as pseudo-differential relative to common AIN15. |
| 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 path; also serves as 16th analog input in single-ended mode. |
| REF+ | Positive Reference Input | Accepts 1V to VDD external reference; requires 0.47µF bypass capacitor to GND for stability. |
| 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 indicate data readiness. |
Key Features
| Feature | Design Value |
|---|---|
| SampleSet™ Channel Sequencer | User-programmable 256-step analog input sequence reduces MCU overhead and enables mixed-rate multichannel sampling without host intervention. |
| 16-Entry FIFO Buffer | Allows burst sampling at 1Msps while reading out data asynchronously at lower clock rates - decouples acquisition from processing timing. |
| Internal Averaging Mode | Improves SNR for noisy signals by averaging multiple conversions per sample point - no firmware averaging required. |
| Bipolar Input Ranges | Software-selectable ±VREF+/2 or ±VREF+ ranges simplify AC-coupled sensor interfacing without external level-shifting circuitry. |
| AutoShutdown™ Power Management | Enters 2μA shutdown state automatically after conversion idle period - extends battery life in intermittent-sampling applications. |
Applications
| Industrial Motor Control | Portable Medical Sensors |
|---|---|
Use Scenario: Real-time current and voltage sampling in servo drive feedback loops with simultaneous multi-axis monitoring. IC Role / Device Role / Timing Role: 12-bit SAR ADC providing synchronized 1Msps sampling across 16 channels with <1000ns conversion time in external clock mode. Use Value: Enables precise field-oriented control (FOC) algorithms with minimal latency and deterministic timing via SampleSet™ sequencing. | Use Scenario: Battery-powered ECG or impedance plethysmography device requiring low-noise, low-power analog front-end digitization. IC Role / Device Role / Timing Role: High-accuracy ADC with internal averaging and 5.4mW active power enabling >24-hour operation on coin-cell batteries. Use Value: Eliminates need for external op-amp filtering and DSP-based averaging, reducing BOM count and PCB area. |
| Automotive Battery Monitoring | High-Speed Closed-Loop Test Equipment |
Use Scenario: Cell voltage and temperature monitoring in 12S–16S Li-ion battery packs under dynamic load conditions. IC Role / Device Role / Timing Role: 16-channel ADC with ±1 LSB INL and -40°C to +125°C operation supporting AEC-Q100–compliant systems (via MAX11128ATI/V+ variant). Use Value: Delivers traceable cell-level accuracy without calibration drift, meeting ISO 26262 ASIL-B functional safety requirements. | Use Scenario: Automated test equipment capturing transient waveforms during semiconductor device characterization. IC Role / Device Role / Timing Role: 1.5MHz full-linear bandwidth and 70dB SINAD at 250kHz enable accurate spectral analysis of fast-switching power devices. Use Value: Replaces higher-cost pipeline ADCs in mid-speed test fixtures while maintaining DC accuracy and harmonic distortion performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX11128ATI/V+ | AEC-Q100 qualified variant with identical pinout, specs, and SampleSet™ functionality; enhanced reliability screening for automotive use. | Required for automotive-grade designs needing qualification evidence; same thermal and timing behavior as MAX11128ATI+TG3U. | Select MAX11128ATI/V+ when automotive qualification documentation and extended reliability testing are mandatory. |
| ADS8688IPWR | 8-channel, 16-bit, 1Msps SAR ADC with internal reference and SPI interface; no SampleSet™ or FIFO; higher power (15mW). | Better DC accuracy but lacks multichannel sequencing flexibility and low-power shutdown modes. | Choose ADS8688IPWR where absolute precision outweighs channel count and power efficiency. |
Compared with MAX11128ATI/V+, the MAX11128ATI+TG3U offers identical performance and footprint but excludes AEC-Q100 certification; versus ADS8688IPWR, it trades 4-bit resolution for 2× channel count, 3× lower power, and advanced sequencing - making it optimal for resource-constrained multichannel systems.
Availability
MAX11128ATI+TG3U is available at Aetrix Electronics and suitable for industrial motor control, portable medical sensors, automotive battery monitoring, and high-speed closed-loop test equipment requiring stable component supply and long-term production continuity.
Supply support for MAX11128ATI+TG3U 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 to deliver high-speed, low-power, multichannel SAR conversion with intelligent sequencing - targeting space- and power-constrained data acquisition in harsh environments.
FAQ
What is the maximum sampling rate supported by the MAX11128ATI+TG3U?
The MAX11128ATI+TG3U supports a maximum sampling rate of 1Msps in both internal and external clock modes. In external clock mode with fSCLK = 16MHz, conversion time is 1000ns per sample; in internal clock mode, typical conversion time is 5.9µs. Full-linear bandwidth remains 1.5MHz regardless of clock source, ensuring signal fidelity up to that frequency.
Does the MAX11128ATI+TG3U require an external reference voltage?
Yes, the MAX11128ATI+TG3U requires an external differential reference: REF+ (1V to VDD) and REF- (up to +1V). It does not include an internal reference. The device guarantees ±1 LSB INL and 70dB SINAD only when driven by a stable, low-noise external reference, typically bypassed with a 0.47µF capacitor to GND at REF+.
How many analog input channels does the MAX11128ATI+TG3U support?
The MAX11128ATI+TG3U supports 16 analog input channels: AIN0–AIN13, plus CNVST/AIN14 and REF-/AIN15, which double as analog inputs when not used for control/reference functions. All channels can be configured as single-ended, fully differential, or pseudo-differential relative to a common input.
What package type is used for the MAX11128ATI+TG3U?
The MAX11128ATI+TG3U uses a 28-pin, 5mm × 5mm TQFN-EP (thin quad flat no-lead with exposed pad) package. The exposed pad must be soldered to a GND plane for optimal thermal dissipation and noise immunity. Land pattern number 90-0023 applies, and RoHS compliance is indicated by the '+' suffix in the package code.
Can the MAX11128ATI+TG3U operate in automotive temperature ranges?
Yes, the MAX11128ATI+TG3U is specified for operation from -40°C to +125°C and is offered in an AEC-Q100 qualified variant (MAX11128ATI/V+). While the MAX11128ATI+TG3U itself is not certified, its electrical and thermal specifications match the qualified version, making it suitable for automotive-adjacent applications where full qualification is not mandated.
MAX11128ATI+TG3U Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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+TG3U FAQ
1.How can I place an order for MAX11128ATI+TG3U through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11128ATI+TG3U 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+TG3U reliable?
The price and inventory of MAX11128ATI+TG3U are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11128ATI+TG3U is usually 5 days.
3.What payment methods are accepted for MAX11128ATI+TG3U?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11128ATI+TG3U transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11128ATI+TG3U?
MAX11128ATI+TG3U orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11128ATI+TG3U 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+TG3U?
For technical support, including MAX11128ATI+TG3U datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11128ATI+TG3U requirements.
6.How does Aetrix verify that MAX11128ATI+TG3U is sourced from the original manufacturer or authorized distributors?
All MAX11128ATI+TG3U 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+TG3U meets industry standards.
7.What is the process for return or replacement of MAX11128ATI+TG3U?
All MAX11128ATI+TG3U units undergo pre-shipment inspection (PSI). If there is an issue with MAX11128ATI+TG3U, 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+TG3U part is unused and in its original packaging.
Return procedure for MAX11128ATI+TG3U:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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