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Analog Devices Inc./Maxim Integrated MAX11128ATI/V+
- Part No.:
- MAX11128ATI/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX11128ATI/V+.pdf
- Description:
- IC ADC 12BIT SAR 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,667
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Product details
Overview
MAX11128ATI/V+ from Analog Devices is a 12-bit, 16-channel, 1Msps SAR ADC with external reference support, 1.5MHz full-linear bandwidth, ±1 LSB INL, and 70dB SINAD at 250kHz - deployed in high-speed industrial control and battery-powered data acquisition systems requiring precision timing and low power.
For engineers reviewing the MAX11128ATI/V+ datasheet, MAX11128ATI/V+ pinout, MAX11128ATI/V+ application, or MAX11128ATI/V+ equivalent, this page delivers verified technical context, exact package mapping (28-pin TQFN-EP), real-world use-value metrics, and AEC-Q100-qualified alternatives for automotive-grade signal chain design.
Technical Context
The MAX11128ATI/V+ implements a successive-approximation register (SAR) architecture with dual clock modes: internal clock (enabling FIFO buffering and on-chip averaging) and external clock (supporting SampleSet™ programmable channel sequencing). It features true differential track-and-hold across all 16 analog inputs.
Its analog front-end supports single-ended, fully differential, and pseudo-differential configurations with two software-selectable bipolar input ranges (±VREF+/2 and ±VREF+), while the 3-wire SPI-compatible serial interface operates up to 16MHz with no external logic required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - delivers 4096 distinct output codes for high-fidelity sensor digitization in closed-loop control. |
| Sampling Rate | 1 Msps - enables real-time capture of fast transients in motor control or vibration monitoring without pipeline delay. |
| INL / DNL | ±1 LSB / No missing codes - ensures monotonicity and end-point accuracy over -40°C to +125°C for calibration-critical applications. |
| SINAD | 70 dB at 250 kHz - guarantees usable dynamic range for medium-bandwidth signals like audio preamps or medical ECG front-ends. |
| Power Dissipation | 5.4 mW at 3V/1Msps - extends battery life in portable instrumentation while maintaining full performance. |
| Full Shutdown Current | 2 µA - enables ultra-low-power sleep states in energy-harvesting or wake-on-event sensor nodes. |
| Reference Input | External differential (1V to VDD) - allows system-level voltage scaling and noise rejection via matched reference source. |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive, industrial PLC, and aerospace edge-sensing environments. |
Pinout & Package
MAX11128ATI/V+ is housed in a 28-pin, 5mm × 5mm TQFN-EP package with exposed pad (EP) connected to GND for thermal and noise performance. Pin numbering follows standard top-view orientation with pin 1 at top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–11, 26–28 | AIN0–AIN13 | 16 configurable analog inputs supporting single-ended, fully differential, or pseudo-differential acquisition relative to common input. |
| 12 | CNVST/AIN14 | Active-low conversion start trigger; doubles as analog input channel 14 in flexible configuration mode. |
| 13 | REF-/AIN15 | External differential reference negative input; also serves as analog input channel 15 when reference not used. |
| 15 | REF+ | Positive reference input - accepts 1V to VDD; requires 0.47µF bypass capacitor for stability. |
| 17–18 | VDD | Analog supply (2.35V–3.6V); must be decoupled with 10µF || 0.1µF capacitors per pin. |
| 19 | SCLK | Serial clock input - drives 16MHz SPI/QSPI/MICROWIRE interface with 40–60% duty cycle tolerance. |
| 20 | CS | Chip select - enables serial interface when low; places DOUT in high-impedance state when high. |
| 21 | DIN | Serial data input - latched on rising SCLK edge for command and configuration writes. |
| 22 | DGND | Digital I/O ground - separate from analog GND to minimize digital switching noise coupling. |
| 23 | OVDD | I/O supply (1.5V–3.6V) - powers digital interface independently for level-shifting compatibility with 1.8V/2.5V/3.3V controllers. |
| 24 | DOUT | Serial data output - driven on falling SCLK edge; three-state when CS is high. |
| 25 | EOC | End-of-conversion flag - asserts low after conversion completes (internal clock mode only). |
| EP | Exposed Pad | Thermal and electrical ground connection - must be soldered directly to PCB GND plane for θJC = 3.1°C/W performance. |
Key Features
| Feature | Design Value |
|---|---|
| SampleSet™ Channel Sequencing | User-programmable 256-step analog input sequence reduces microcontroller polling overhead and enables mixed-rate multichannel sampling. |
| 16-Entry FIFO Buffer | Allows burst sampling at 1Msps while readout occurs asynchronously at lower clock rates - decouples acquisition and processing timing. |
| Internal Averaging Mode | Improves SNR by up to 3dB for noisy sensor signals without external firmware averaging or additional filtering components. |
| AutoShutdown™ Power Management | Automatically enters 2µA shutdown after conversion idle period - eliminates manual power-state coordination in firmware. |
| Flexible Input Configuration | Each channel supports unipolar, bipolar (±VREF+/2 or ±VREF+), single-ended, or differential modes via RANGE bit and MUX control. |
| AEC-Q100 Qualified | Qualified to Grade 0 (-40°C to +125°C) for automotive applications including ADAS sensor fusion and powertrain monitoring. |
Applications
| Industrial Motor Control | Automotive Battery Monitoring |
|---|---|
|
Use Scenario: Real-time current and voltage sensing across 16 battery cell taps in EV BMS stacks. IC Role / Device Role / Timing Role: 12-bit SAR ADC acquiring synchronized samples at 1Msps with 1.5MHz linear bandwidth to resolve fast transient faults. Use Value: ±1 LSB INL ensures accurate SoH estimation across temperature; AEC-Q100 qualification validates reliability in harsh under-hood environments. |
Use Scenario: High-speed closed-loop feedback in servo-driven robotic joints with multi-axis position and torque sensing. IC Role / Device Role / Timing Role: Simultaneous sampling of 16 analog sensor channels (encoders, strain gauges, thermistors) using SampleSet™ sequencing. Use Value: 5.4mW power at 1Msps extends runtime in portable cobots; FIFO buffering enables deterministic latency for motion control algorithms. |
| Portable Medical Diagnostics | High-Speed Data Acquisition |
|
Use Scenario: Portable ECG/EMG devices requiring low-noise, low-power analog front-end with clinical-grade linearity. IC Role / Device Role / Timing Role: 12-bit ADC digitizing biopotential signals with 70dB SINAD at 250kHz and ±VREF+/2 bipolar range for DC-coupled operation. Use Value: 2µA shutdown current enables weeks-long battery life; small 5mm × 5mm TQFN-EP footprint saves space in handheld form factors. |
Use Scenario: Modular test equipment capturing transient waveforms from multiple sensors in manufacturing QA stations. IC Role / Device Role / Timing Role: 16-channel SAR ADC operating in internal clock mode with FIFO to buffer bursts before USB/FPGA transfer. Use Value: 1.5MHz full-linear bandwidth preserves signal integrity up to 1.5MHz; 16MHz SPI interface supports >12MB/s sustained throughput. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8860IRGET | 16-bit, 1Msps, SPI interface, but no FIFO, no SampleSet, and only 8-channel input multiplexer. | Lacks programmable sequencing and burst-buffer capability - requires host MCU to manage channel order and timing. | Choose when higher resolution (16-bit) outweighs need for autonomous sequencing and FIFO buffering. |
| AD7961BCPZ | 16-bit, 5Msps, differential inputs only, no internal averaging, and requires external reference buffer. | Higher speed and resolution but consumes 32mW at 5Msps - unsuitable for battery-powered or thermally constrained designs. | Choose for lab-grade oscilloscope front-ends where speed/resolution dominate power and integration trade-offs. |
Compared with ADS8860IRGET and AD7961BCPZ, the MAX11128ATI/V+ uniquely combines 12-bit precision, 16-channel flexibility, integrated FIFO, SampleSet™ autonomy, and sub-6mW power - making it optimal for embedded systems needing intelligent, low-overhead analog acquisition.
Availability
MAX11128ATI/V+ is available at Aetrix Electronics and suitable for industrial motor control, automotive battery monitoring, and portable medical diagnostics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX11128ATI/V+ 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 technologies, serving industrial, automotive, communications, and healthcare markets.
The MAX11120–MAX11128 family was designed specifically for low-power, high-speed multichannel data acquisition in space-constrained and thermally demanding environments - emphasizing integration, autonomy, and AEC-Q100 readiness.
FAQ
What is the maximum sampling rate supported by the MAX11128ATI/V+?
The MAX11128ATI/V+ supports a maximum sampling rate of 1 Msps in both internal and external clock modes. At this rate, conversion time is 5.9 µs (internal clock) or 1000 ns (external clock with 16MHz SCLK), enabling real-time capture of fast analog events without pipeline delay or latency jitter.
Does the MAX11128ATI/V+ require an external reference voltage?
Yes, the MAX11128ATI/V+ requires an external differential reference: REF+ (1V to VDD) and REF- (–0.3V to +1V). It does not include an internal reference. The device supports external reference voltages up to VDD + 50mV on REF+, and reference current draw is 36.7 µA at 2.5V and 1Msps - necessitating proper bypassing with a 0.47µF capacitor.
How many analog input channels does the MAX11128ATI/V+ support?
The MAX11128ATI/V+ supports 16 analog input channels (AIN0–AIN13, plus CNVST/AIN14 and REF-/AIN15), configurable as single-ended, fully differential pairs, or pseudo-differential inputs relative to a common input. This matches its designation as the 16-channel variant within the MAX11120–MAX11128 family.
Is the MAX11128ATI/V+ AEC-Q100 qualified?
Yes, the MAX11128ATI/V+ is explicitly AEC-Q100 qualified (Grade 0), as confirmed in the datasheet's "Benefits and Features" section. It operates across –40°C to +125°C and meets automotive reliability standards for use in battery monitoring, ADAS, and powertrain subsystems.
What package type is used for the MAX11128ATI/V+?
The MAX11128ATI/V+ uses a 28-pin, 5mm × 5mm TQFN-EP (thin quad flat no-lead with exposed pad) package, outlined as "28 TQFN-EP" in the ordering information. The exposed pad (EP) must be soldered to the PCB GND plane to achieve specified thermal performance (θJCb = 3.1°C/W) and ensure stable operation.
MAX11128ATI/V+ 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:
- 12
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- 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:
- 1.5V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 28-TQFN (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX11128ATI/V+ FAQ
1.How can I place an order for MAX11128ATI/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11128ATI/V+ 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/V+ reliable?
The price and inventory of MAX11128ATI/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11128ATI/V+ is usually 5 days.
3.What payment methods are accepted for MAX11128ATI/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11128ATI/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11128ATI/V+?
MAX11128ATI/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11128ATI/V+ 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/V+?
For technical support, including MAX11128ATI/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11128ATI/V+ requirements.
6.How does Aetrix verify that MAX11128ATI/V+ is sourced from the original manufacturer or authorized distributors?
All MAX11128ATI/V+ 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/V+ meets industry standards.
7.What is the process for return or replacement of MAX11128ATI/V+?
All MAX11128ATI/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX11128ATI/V+, 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/V+ part is unused and in its original packaging.
Return procedure for MAX11128ATI/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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