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Analog Devices Inc./Maxim Integrated MAX11324ATJ+
- Part No.:
- MAX11324ATJ+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
MAX11324ATJ+.pdf
- Description:
- IC ADC 10BIT SAR 32TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,220
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Product details
Overview
MAX11324ATJ+ from Maxim Integrated is a 10-bit, 8-channel SAR analog-to-digital converter with post-mux external signal conditioning access, 1Msps conversion rate, ±0.4 LSB INL, 61.5dB SINAD at 100kHz, and operation from 2.35V to 3.6V supply. It enables flexible multichannel acquisition in battery-powered industrial sensors and portable medical monitors.
For engineers reviewing the MAX11324ATJ+ datasheet, MAX11324ATJ+ pinout, MAX11324ATJ+ application, or MAX11324ATJ+ equivalent, this page delivers verified technical context, real-world interface constraints, channel sequencing behavior under SampleSet™ mode, and validated alternative options for high-precision, low-power data acquisition systems.
Technical Context
The MAX11324ATJ+ implements a successive approximation register (SAR) architecture with integrated 8-channel analog multiplexer and externally accessible AOP/AON (mux outputs) and AIP/AIN (ADC inputs), enabling external signal conditioning between mux and ADC core-even for differential signals. It supports both internal clock mode (with 16-entry FIFO and programmable averaging) and external clock mode (with SampleSet™ sequencer supporting up to 256-channel sequences).
Input configuration is software-selectable per channel: single-ended, fully differential, or pseudo-differential relative to a common input. Bipolar input ranges (±VREF+/2 or ±VREF+) are set via RANGE bit; reference is externally supplied (1V to VDD) with differential REF+/REF− inputs. The device uses a 3-wire SPI/QSPI/MICROWIRE-compatible serial interface operating up to 16MHz with CPOL=CPHA=1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - delivers 1024 discrete output codes for medium-precision sensor digitization |
| Conversion Rate | 1Msps - supports real-time sampling of fast transients up to 500kHz full-linear bandwidth |
| INL / DNL | ±0.4 LSB / no missing codes - ensures monotonicity and <0.1% end-point linearity error |
| SINAD @ 100kHz | 61.5dB typical - corresponds to ~10.2 effective bits for clean AC signal measurement |
| Supply Voltage | 2.35V to 3.6V - compatible with single-cell Li-ion and 3.3V system rails |
| Power Dissipation | 5.4mW at 1Msps (3V) - enables >100hr operation on 500mAh battery in duty-cycled systems |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive and industrial control environments |
Pinout & Package
MAX11324ATJ+ is housed in a 32-pin, 5mm × 5mm TQFN package with exposed pad (EP), optimized for thermal performance and PCB space efficiency in compact portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AOP | Multiplexer positive output | Provides buffered, time-aligned analog signal post-mux for external filtering/gain before ADC core |
| AON | Multiplexer negative output | Enables differential signal conditioning upstream of ADC input stage |
| AIP | ADC positive input | Direct connection point to SAR core; accepts conditioned single-ended or differential signals |
| AIN | ADC negative input | Completes differential input path; must be driven with matched impedance for optimal THD |
| AIN0–AIN7 | Analog input channels | Eight dedicated single-ended inputs; configurable as pseudo-differential pairs sharing AINx or AOP/AON |
| REF+, REF− | Differential reference inputs | Accept external 1V–VDD reference; REF− can double as AIN15 in 16-channel variants (not applicable to MAX11324) |
| CS, SCLK, DIN, DOUT | 3-wire SPI interface | CPOL=CPHA=1 timing; DOUT delivers 16-bit frame (4-bit channel ID + 12-bit result) with CHAN_ID=1 enabled |
| CNVST | Active-low conversion start | Edge-triggered command; initiates sampling on falling edge and synchronizes internal acquisition timing |
| EOC | End-of-conversion indicator | Asserted low after conversion completes (internal clock mode only); used for interrupt-driven readout |
| VDD, OVDD, DGND, GND, EP | Power and ground | VDD (2.35–3.6V analog supply), OVDD (1.5–3.6V I/O supply), separate analog/digital grounds, EP tied to GND for thermal stability |
Key Features
| Feature | Design Value |
|---|---|
| Post-Mux Signal Access (AOP/AON/AIP/AIN) | Enables external PGA/filter between mux and ADC-critical for noise-sensitive differential sensor front-ends without degrading SNR |
| SampleSet™ Channel Sequencer | Allows user-defined 256-step sequence per acquisition frame, eliminating MCU polling overhead in mixed-rate multichannel systems |
| Internal FIFO (16-entry) | Decouples high-speed sampling (1Msps) from slower host readout, enabling burst capture and deterministic latency control |
| Configurable Input Topology | Per-channel selection of single-ended, fully differential, or pseudo-differential modes-supports diverse sensor types (RTDs, strain gauges, current shunts) on one device |
| AutoShutdown & Fast Wake-up | Reduces supply current to 1.5µA in full shutdown; resumes conversion in <2µs-ideal for wake-on-event sensor nodes |
| Bipolar Input Ranges | Software-selectable ±VREF+/2 or ±VREF+ ranges simplify interfacing with bipolar transducer outputs without external level-shifting |
Applications
| Industrial Process Monitoring | Portable ECG Monitor |
|---|---|
Use Scenario: Continuous 8-channel voltage monitoring of thermocouples, pressure transducers, and flow meters in PLC-based control cabinets. IC Role / Device Role / Timing Role: 10-bit SAR ADC with 1Msps throughput and –40°C to +125°C rating serves as primary digitizer for analog sensor fusion engine. Use Value: Post-mux access allows shared anti-alias filter and gain stage across all 8 channels, reducing BOM count by 7 components versus discrete solutions. |
Use Scenario: Battery-powered wearable ECG acquiring lead-I, II, III, aVR, aVL, aVF, V1–V6 with simultaneous respiration and motion sensing. IC Role / Device Role / Timing Role: Configurable pseudo-differential inputs accept electrode signals referenced to Wilson central terminal; SampleSet™ sequences clinical leads at 1ksps and motion sensors at 100Hz. Use Value: 5.4mW power at 1Msps enables >12hr runtime on 300mAh coin cell; internal FIFO buffers bursts during Bluetooth transmission gaps. |
| Automotive Cabin Air Quality Sensor | Smart Grid Fault Recorder |
Use Scenario: Compact module measuring CO₂, VOC, humidity, and temperature in vehicle HVAC systems using NDIR, MOS, capacitive, and RTD sensors. IC Role / Device Role / Timing Role: 8-channel ADC interfaces mixed-signal sensors with programmable bipolar ranges and 125°C operation for under-dash mounting. Use Value: External reference support (1V–VDD) allows direct use of stable 2.5V bandgap reference; ±0.4 LSB INL ensures <0.5% gas concentration error over lifetime. |
Use Scenario: Distribution-level fault recorder capturing 3-phase voltage/current waveforms during transient events (lightning, switching surges) with timestamping. IC Role / Device Role / Timing Role: High-input-impedance SAR core digitizes conditioned CT/PT outputs; full-linear bandwidth >500kHz captures harmonic content up to 21st order. Use Value: 61.5dB SINAD at 100kHz meets IEEE C37.118.1 P-class accuracy; post-mux access enables per-phase anti-alias filtering before ADC input. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit, multichannel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8684IPWR | 16-bit resolution, 500ksps, SPI interface, integrated reference, no post-mux access | Higher precision but lower speed; lacks external signal conditioning flexibility | Select when absolute accuracy >12-bit is required and external conditioning is handled upstream |
| AD7928BRUZ | 12-bit, 8-channel, 1Msps, no FIFO, no SampleSet™, 2.7–5.25V supply | Similar speed/channel count but no internal sequencer or mux-output access; wider supply range | Select when system uses fixed channel order and external buffering is unnecessary |
Compared with ADS8684IPWR and AD7928BRUZ, MAX11324ATJ+ uniquely combines 1Msps throughput, post-mux signal access, and SampleSet™ programmability-making it optimal for resource-constrained, mixed-signal embedded systems requiring adaptive multichannel acquisition without host CPU intervention.
Availability
MAX11324ATJ+ is available at Aetrix Electronics and suitable for industrial process monitoring, portable medical instrumentation, automotive cabin sensing, and smart grid fault recording requiring stable component supply and long-term manufacturability.
Supply support for MAX11324ATJ+ 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
Maxim Integrated (now part of Analog Devices) is a leader in high-performance analog, mixed-signal, and power management ICs, serving industrial, automotive, communications, and consumer markets since 1983.
The MAX1132x family was designed specifically for low-power, high-channel-count data acquisition in space- and energy-constrained systems-emphasizing architectural flexibility (post-mux access, SampleSet™), wide temperature operation, and seamless microcontroller integration.
FAQ
What is the maximum sampling rate supported by MAX11324ATJ+?
The MAX11324ATJ+ supports a maximum conversion rate of 1 million samples per second (1Msps) in both internal and external clock modes. At this rate, the device achieves 61.5dB SINAD at 100kHz input frequency and consumes 5.4mW from a 3V supply. Conversion time is 1000ns in externally clocked mode with 16MHz SCLK, or 5.9µs in internally clocked mode.
Does MAX11324ATJ+ support differential input configurations?
Yes, MAX11324ATJ+ supports fully differential, pseudo-differential, and single-ended input configurations per channel. Fully differential mode uses AIP/AIN pins with ±VREF+/2 or ±VREF+ ranges; pseudo-differential mode references inputs to a common AINx pin. The device maintains ±0.4 LSB INL and 61.5dB SINAD in all modes when properly terminated.
How does the SampleSet™ technology work in MAX11324ATJ+?
SampleSet™ is a user-programmable channel sequencer in MAX11324ATJ+ that allows defining custom acquisition sequences up to 256 steps. Each step specifies channel number, input mode, and range-enabling mixed-rate sampling (e.g., fast temperature + slow humidity) without MCU involvement. Sequences are loaded via SPI and executed autonomously in external clock mode.
What is the purpose of AOP and AON pins on MAX11324ATJ+?
AOP and AON are the positive and negative outputs of the internal analog multiplexer in MAX11324ATJ+. They provide time-aligned, buffered signals post-mux but pre-ADC, allowing external circuitry (e.g., anti-alias filters, PGAs, or isolation amplifiers) to condition signals before digitization-preserving SNR and enabling differential processing even for single-ended sensor sources.
Is MAX11324ATJ+ pin-compatible with other devices in the MAX1132x family?
MAX11324ATJ+ shares the same 32-pin TQFN package and pinout with MAX11321, MAX11322, MAX11325, and MAX11328. However, channel count differs: MAX11324 is 8-channel, while MAX11321/MAX11322 are 4-channel and MAX11327/MAX11328 are 16-channel. Pin functions (e.g., AIN0–AIN7 vs. AIN0–AIN13) and internal register maps vary accordingly-hardware layout is reusable, but firmware must match channel count.
MAX11324ATJ+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- 4, 8
- 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:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 32-TQFN (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX11324ATJ+ FAQ
1.How can I place an order for MAX11324ATJ+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11324ATJ+ 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 MAX11324ATJ+ reliable?
The price and inventory of MAX11324ATJ+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11324ATJ+ is usually 5 days.
3.What payment methods are accepted for MAX11324ATJ+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11324ATJ+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11324ATJ+?
MAX11324ATJ+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11324ATJ+ 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 MAX11324ATJ+?
For technical support, including MAX11324ATJ+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11324ATJ+ requirements.
6.How does Aetrix verify that MAX11324ATJ+ is sourced from the original manufacturer or authorized distributors?
All MAX11324ATJ+ 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 MAX11324ATJ+ meets industry standards.
7.What is the process for return or replacement of MAX11324ATJ+?
All MAX11324ATJ+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX11324ATJ+, 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 MAX11324ATJ+ part is unused and in its original packaging.
Return procedure for MAX11324ATJ+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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