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Analog Devices Inc./Maxim Integrated MAX11338ATJ+T
- Part No.:
- MAX11338ATJ+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
MAX11338ATJ+T.pdf
- Description:
- IC ADC 10BIT SAR 32TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,696
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Product details
Overview
MAX11338ATJ+T from Analog Devices is a 10-bit, 4-channel SAR analog-to-digital converter with external differential reference support, 500ksps conversion rate, ±0.4 LSB INL, 61.5dB SINAD at 100kHz, and operates from 2.35V to 3.6V supply consuming only 4.2mW at full speed. It enables high-precision multichannel data acquisition in battery-powered industrial sensors.
For engineers reviewing the MAX11338ATJ+T datasheet, MAX11338ATJ+T pinout, MAX11338ATJ+T application, or MAX11338ATJ+T equivalent, key selection considerations include its SampleSet™ programmable channel sequencing, post-mux signal access for external conditioning, internal FIFO, and SPI/QSPI/MICROWIRE-compatible 3-wire interface with channel ID output.
Technical Context
The MAX11338ATJ+T implements a successive approximation register (SAR) architecture with dual clock modes: internally clocked (with integrated 16-entry FIFO and averaging) and externally clocked (enabling SampleSet™ user-defined 256-step channel sequences). Its analog front-end supports single-ended, fully differential, and pseudo-differential input configurations per channel via software-selectable RANGE bit.
It provides direct external access to both multiplexer outputs (AOP/AON) and ADC inputs (AIP/AIN), enabling insertion of external gain stages, filters, or PGAs between mux and ADC. Reference inputs accept 1V to VDD differential voltage, and digital I/O operates independently at 1.5V–3.6V (OVDD), decoupled from analog supply (VDD).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - delivers 1024 discrete output codes for medium-precision measurement systems |
| Conversion Rate | 500ksps - supports real-time sampling of signals up to 250kHz Nyquist bandwidth |
| INL / DNL | ±0.4 LSB / no missing codes - ensures monotonicity and <0.1% end-point linearity error |
| SINAD | 61.5dB at 100kHz - corresponds to ~10.2 effective bits for clean AC signal digitization |
| Supply Current | 2mA at 500ksps (VDD = 3V) - enables low-power operation in portable instrumentation |
| Reference Input | Differential REF+/REF−, 1V to VDD - allows ratiometric or precision external reference integration |
| Operating Temp | −40°C to +125°C - qualified for under-hood automotive and industrial control environments |
Pinout & Package
MAX11338ATJ+T is housed in a 32-pin, 5mm × 5mm TQFN package with exposed pad (EP), optimized for thermal performance and PCB space efficiency in compact sensor modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN0–AIN3 | Analog Input Channels | Four dedicated single-ended or configurable differential input pins; support unipolar/bipolar ranges |
| AOP / AON | Multiplexer Output Terminals | Provide buffered analog output of selected channel pre-ADC; enable external signal conditioning |
| AIP / AIN | ADC Input Terminals | Direct connection points to SAR core; require external buffering if driving high-impedance sources |
| REF+ / REF− | Differential Reference Inputs | Accept external reference voltage pair; REF+ must be ≥1V and ≤VDD + 50mV |
| VDD / OVDD | Analog / Digital Power Supplies | VDD (2.35–3.6V) powers analog circuitry; OVDD (1.5–3.6V) powers digital I/O-supports mixed-voltage interfacing |
| CS / SCLK / DIN / DOUT | 3-Wire SPI-Compatible Interface | Full-duplex serial interface with CS-active-low framing; DOUT outputs 16-bit word (4-bit channel ID + 12-bit result) |
| EOC | End-of-Conversion Indicator | Active-low pulse signaling valid data ready (internal clock mode only); simplifies timing-critical readout |
| CNVST | Conversion Start Trigger | Edge-sensitive input initiating sample-and-hold; supports hardware-synchronized acquisition across multiple devices |
Key Features
| Feature | Design Value |
|---|---|
| SampleSet™ Technology | User-programmable 256-step channel sequence eliminates MCU polling overhead in multichannel monitoring |
| Post-Mux Signal Access | AOP/AON and AIP/AIN pins allow insertion of external filter/PGA between mux and ADC for differential signal integrity |
| Internal FIFO (16-entry) | Enables burst sampling at 500ksps while reading out at slower system clock rates-decouples acquisition from processing |
| Bipolar Input Ranges | Software-selectable ±VREF+/2 or ±VREF+ ranges simplify interfacing with bipolar transducer outputs |
| AutoShutdown™ Mode | Reduces supply current to 2.1µW (VDD = 2.35V) during idle periods-extends battery life in intermittent-sampling applications |
Applications
| Industrial Sensor Node | Automotive Battery Monitor |
|---|---|
Use Scenario: Simultaneous voltage, temperature, and current sensing in distributed PLC I/O modules. IC Role / Device Role / Timing Role: 4-channel SAR ADC digitizing conditioned analog signals with synchronized CNVST triggering and channel ID tagging. Use Value: SampleSet™ sequencing reduces host MCU interrupt load by >70% versus polled acquisition; FIFO enables deterministic readout timing. |
Use Scenario: Cell voltage and pack temperature monitoring in 12V/48V hybrid vehicle battery management systems. IC Role / Device Role / Timing Role: High-accuracy, low-drift ADC acquiring bipolar sensor outputs across wide temperature range (−40°C to +125°C). Use Value: ±0.4 LSB INL and ±2 ppm/°C offset drift ensure <0.2% total measurement error over full automotive temp range. |
| Portable Medical Pulse Oximeter | Condition Monitoring Edge Node |
Use Scenario: Dual-wavelength photodiode signal digitization with ambient light rejection in handheld oximeters. IC Role / Device Role / Timing Role: Low-noise 10-bit ADC operating from 3V coin cell, using internal averaging and external reference for stable ratiometric measurement. Use Value: 61.5dB SINAD at 100kHz and 4.2mW power enable >24-hour runtime on single CR2032 battery. |
Use Scenario: Vibration and temperature acquisition in predictive maintenance gateways deployed on rotating machinery. IC Role / Device Role / Timing Role: Multichannel ADC with post-mux access enabling anti-alias filtering before digitization of high-frequency mechanical signals. Use Value: Full-linear bandwidth of 0.5MHz (SINAD ≥61dB) supports undersampling of 200kHz vibration harmonics without aliasing. |
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, 500ksps, internal reference, SPI interface; no post-mux access or SampleSet™ | Better DC accuracy for precision instrumentation; lacks flexible external signal conditioning path | Select when absolute accuracy >12-bit is required and external analog conditioning is handled upstream |
| AD7928BRUZ | 12-bit, 8-channel, 1MSPS, no FIFO, no SampleSet™, requires external reference; 28-TSSOP package | Higher speed but no channel sequencing flexibility; larger footprint and no AOP/AON pins | Select when higher throughput is critical and board space permits larger package with simpler routing |
Compared with ADS8684IPWR and AD7928BRUZ, the MAX11338ATJ+T uniquely combines 10-bit precision with programmable sequencing, post-mux signal access, and ultra-low power-making it optimal for resource-constrained, multichannel edge sensing where signal path flexibility matters more than raw resolution.
Availability
MAX11338ATJ+T is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive battery monitors, and portable medical instruments requiring stable component supply, extended temperature operation, and long-term production continuity.
Supply support for MAX11338ATJ+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 is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The MAX11335–MAX11340 family was designed specifically for low-power, multichannel data acquisition in space-constrained, battery-operated systems requiring flexible input configuration and minimal host processor overhead.
FAQ
What is the maximum sampling rate supported by the MAX11338ATJ+T?
The MAX11338ATJ+T supports a maximum conversion rate of 500ksps in both internal and external clock modes. At this rate, the device achieves 61.5dB SINAD at 100kHz input frequency and consumes 4.2mW from a 3V supply. Conversion time is 2000ns in external clock mode with 8MHz SCLK, or 5.9µs in internal clock mode.
Does the MAX11338ATJ+T support differential input configurations?
Yes, the MAX11338ATJ+T supports fully differential, pseudo-differential, and single-ended analog inputs. It provides dedicated AOP/AON (mux outputs) and AIP/AIN (ADC inputs) pins to enable external differential signal conditioning. Input pairs can be configured in bipolar ranges of ±VREF+/2 or ±VREF+ via the RANGE bit.
How does the SampleSet™ feature work in the MAX11338ATJ+T?
SampleSet™ is a user-programmable channel sequencer allowing up to 256 unique steps of analog input selection, gain, and range settings. The sequence is loaded into internal memory and executed autonomously-reducing microcontroller communication overhead and enabling mixed-rate sampling (e.g., fast temperature + slow voltage reads) without CPU intervention.
What package type and pin count does the MAX11338ATJ+T use?
The MAX11338ATJ+T uses a 32-pin, 5mm × 5mm TQFN package with exposed pad (EP). Pinout includes four analog inputs (AIN0–AIN3), mux/ADC interface pins (AOP/AON/AIP/AIN), differential reference inputs (REF+/REF−), dual supplies (VDD/OVDD), and standard 3-wire SPI signals (CS/SCLK/DIN/DOUT/EOC/CNVST).
Can the MAX11338ATJ+T operate with a 1.8V digital I/O supply?
Yes, the MAX11338ATJ+T supports OVDD from 1.5V to 3.6V, making it compatible with 1.8V digital interfaces. Logic thresholds scale with OVDD (VIH = 0.75 × OVDD, VIL = 0.25 × OVDD), and DOUT/EOC outputs are fully specified down to 1.5V OVDD-enabling seamless integration with modern low-voltage MCUs.
MAX11338ATJ+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 500k
- Number of Inputs:
- 2, 4
- Input Type:
- Differential, 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:
- PGA
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 32-TQFN (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX11338ATJ+T FAQ
1.How can I place an order for MAX11338ATJ+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11338ATJ+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 MAX11338ATJ+T reliable?
The price and inventory of MAX11338ATJ+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11338ATJ+T is usually 5 days.
3.What payment methods are accepted for MAX11338ATJ+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11338ATJ+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11338ATJ+T?
MAX11338ATJ+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11338ATJ+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 MAX11338ATJ+T?
For technical support, including MAX11338ATJ+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11338ATJ+T requirements.
6.How does Aetrix verify that MAX11338ATJ+T is sourced from the original manufacturer or authorized distributors?
All MAX11338ATJ+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 MAX11338ATJ+T meets industry standards.
7.What is the process for return or replacement of MAX11338ATJ+T?
All MAX11338ATJ+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX11338ATJ+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 MAX11338ATJ+T part is unused and in its original packaging.
Return procedure for MAX11338ATJ+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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