My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX11325ATJ+
- Part No.:
- MAX11325ATJ+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
MAX11325ATJ+.pdf
- Description:
- IC ADC 12BIT SAR 32TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:132
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX11325ATJ+ from Maxim Integrated is a 12-bit, 8-channel SAR analog-to-digital converter with post-mux external signal conditioning access, 1Msps conversion rate, ±1 LSB INL/DNL, 70dB SINAD at 100kHz, and operates from 2.35V–3.6V supply. It supports single-ended, fully differential, and pseudo-differential inputs and is used in high-speed industrial control and portable medical instrumentation.
For engineers reviewing the MAX11325ATJ+ datasheet, MAX11325ATJ+ pinout, MAX11325ATJ+ application, or MAX11325ATJ+ equivalent, this page delivers verified technical context, real-world interface constraints, channel sequencing behavior under SampleSet™ mode, and validated alternative options for multichannel data acquisition systems requiring low power, high linearity, and external signal conditioning flexibility.
Technical Context
The MAX11325ATJ+ implements a successive approximation register (SAR) architecture with dual clock modes: internal clock (with integrated 16-entry FIFO and programmable averaging) and external clock (enabling SampleSet™-driven user-defined channel sequencing up to 256 steps). Its analog front-end provides externally accessible multiplexer outputs (AOP/AON) and ADC inputs (AIP/AIN), enabling external PGA/filter insertion between mux and ADC core-even for differential signals.
It supports configurable input types per channel (single-ended, fully differential, pseudo-differential), bipolar/unipolar ranges (±VREF+/2 or ±VREF+), and features 500kHz full-linear bandwidth with aperture jitter of 30ps RMS. The 3-wire SPI/QSPI/MICROWIRE-compatible serial interface runs up to 48MHz with CPOL=CPHA=1 and delivers 16-bit frames containing channel ID and 12-bit result when CHAN_ID=1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes for precision measurement applications |
| Conversion Rate | 1Msps - enables real-time sampling of fast transients without pipeline delay |
| INL / DNL | ±1 LSB - ensures monotonicity and no missing codes across full temperature range (−40°C to +125°C) |
| SINAD | 70 dB at 100kHz - supports accurate digitization of medium-bandwidth sensor signals |
| Supply Voltage | 2.35V–3.6V - compatible with modern low-voltage microcontrollers and battery-powered systems |
| Power Dissipation | 5.4 mW at 1Msps (3V) - enables extended runtime in portable instrumentation |
| Input Configuration | 8-channel single-ended or 4-channel fully differential - flexible channel mapping for mixed-signal systems |
Pinout & Package
MAX11325ATJ+ is housed in a 32-pin, 5mm × 5mm TQFN package with exposed pad (EP), rated for −40°C to +125°C operation. Pin functions are validated per Maxim's official pin description table for the 8-channel variant (MAX11324/MAX11325).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AOP / AON | Multiplexer output terminals | Provide direct access to mux output for external signal conditioning before ADC core-supports differential buffering |
| AIP / AIN | ADC analog input terminals | Accept conditioned signal; enable true differential track-and-hold with full common-mode rejection |
| REF+ / REF− | Differential reference inputs | Accept external 1V–VDD reference; REF− may double as AIN15 in 16-channel variants (not applicable to MAX11325ATJ+) |
| CS / SCLK / DIN / DOUT | 3-wire serial interface | Compatible with SPI/QSPI/MICROWIRE masters; CPOL=CPHA=1; DOUT active on SCLK falling edge |
| CNVST | Active-low conversion start | Triggers sampling on falling edge; synchronous with internal or external clock mode |
| EOC | End-of-conversion indicator | Asserted low only in internal clock mode; signals data validity for readout timing |
| VDD / OVDD / DGND / GND | Power and ground domains | VDD powers analog core (2.35V–3.6V); OVDD powers digital I/O (1.5V–3.6V); separate DGND improves noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Post-Mux External Signal Conditioning Access | Enables insertion of external PGA, filter, or driver between multiplexer and ADC core-preserves differential integrity and simplifies anti-aliasing design |
| SampleSet™ Technology | User-programmable 256-step channel sequence reduces MCU overhead and enables mixed-rate sampling (e.g., slow temp + fast vibration channels) |
| Internal Clock Mode with FIFO | 16-entry FIFO allows burst sampling at 1Msps followed by slower host readout-decouples acquisition and communication timing |
| Configurable Input Types | Per-channel selection of single-ended, fully differential, or pseudo-differential inputs relative to common input-maximizes channel utilization in mixed-signal systems |
| AutoShutdown™ with Fast Wake-up | Reduces supply current to 2μA in full shutdown; resumes conversion within microseconds-ideal for duty-cycled portable sensors |
Applications
| Industrial Process Monitoring | Portable Medical Instrumentation |
|---|---|
Use Scenario: Real-time monitoring of multi-sensor process variables (pressure, flow, temperature) in PLC-based control cabinets with limited board space and thermal budget. IC Role / Device Role / Timing Role: 8-channel simultaneous-sampling-capable ADC interfaces to isolated analog front-ends; handles both slow DC and fast transient signals via SampleSet™ sequencing. Use Value: Eliminates need for external mux or multiple ADCs; 5.4mW power at 1Msps extends fanless cabinet uptime; ±1 LSB linearity ensures compliance with IEC 61000-4-30 Class A measurement standards. |
Use Scenario: Battery-powered ECG/EMG device acquiring 8 biopotential leads with adaptive gain and anti-alias filtering. IC Role / Device Role / Timing Role: ADC provides post-mux access to AOP/AON and AIP/AIN, allowing external ultra-low-noise instrumentation amplifier placement before digitization. Use Value: 70dB SINAD at 100kHz meets AAMI EC11 requirements; 2.35V minimum supply enables direct Li-ion (3.0–4.2V) regulation down to 3.0V without LDO dropout; TQFN-32 fits compact flex-rigid PCB layouts. |
| High-Speed Closed-Loop Control | Battery-Powered Test Equipment |
Use Scenario: Motor phase current and position feedback in servo drives where latency and channel crosstalk directly impact loop stability. IC Role / Device Role / Timing Role: Acts as primary acquisition engine with 1000ns conversion time in external clock mode; uses AOP/AON to feed external current-sense amplifiers. Use Value: −88dB crosstalk prevents torque ripple from coupling between phases; 30ps aperture jitter enables <1% error in 20kHz PWM edge detection; internal averaging suppresses switching noise during current sampling. |
Use Scenario: Handheld oscilloscope module digitizing 8 sensor outputs (voltage, current, thermocouple) with variable sample rates and onboard FFT. IC Role / Device Role / Timing Role: ADC serves as front-end for ARM Cortex-M7-based acquisition engine; leverages FIFO to decouple 1Msps sampling from USB bulk-transfer bottlenecks. Use Value: 16-entry FIFO buffers 16 samples for gap-free capture; 5.4mW dissipation avoids thermal throttling in sealed enclosure; 3-wire interface minimizes GPIO count on host MCU. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, multichannel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8688IPWR | 16-bit, 8-channel, SAR ADC; 500kSPS max; integrated reference; no post-mux access; SPI-only interface | Lacks external signal conditioning access and SampleSet™ sequencing; better resolution but lower speed and fixed input configuration | Select when absolute accuracy > speed or external conditioning is unnecessary; not drop-in due to different pinout and feature set |
| AD7960BCPZ | 18-bit, 1-channel, SAR ADC; 5MSPS; differential inputs only; requires external reference and driver; no mux or FIFO | Single-channel architecture; higher resolution and speed but no multichannel capability or integrated sequencing logic | Select for ultra-high-fidelity single-signal capture (e.g., calibration standards); incompatible for 8-channel system replacement |
Compared with ADS8688IPWR and AD7960BCPZ, the MAX11325ATJ+ uniquely balances 12-bit precision, 1Msps throughput, 8-channel flexibility, and post-mux signal conditioning access-making it optimal for space-constrained, battery-operated systems requiring adaptive multichannel acquisition without external logic.
Availability
MAX11325ATJ+ is available at Aetrix Electronics and suitable for industrial process monitoring, portable medical instrumentation, high-speed closed-loop control, and battery-powered test equipment requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX11325ATJ+ 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) designs precision analog, mixed-signal, and power management ICs for demanding industrial, medical, and automotive applications.
The MAX11321–MAX11328 family was engineered to solve multichannel data acquisition challenges in space- and power-constrained systems-emphasizing external signal conditioning access, flexible input configurations, and intelligent sequencing to reduce host processor load.
FAQ
What is the maximum sampling rate of the MAX11325ATJ+?
The MAX11325ATJ+ achieves a maximum conversion rate of 1Msps in both internal and external clock modes. In external clock mode with fSCLK = 16MHz, conversion time is 1000ns per sample. Internal clock mode delivers 5.9µs conversion time with built-in averaging enabled. This rate is maintained across the full operating temperature range (−40°C to +125°C) and supply voltage range (2.35V–3.6V).
Does the MAX11325ATJ+ support differential input configurations?
Yes, the MAX11325ATJ+ supports fully differential input pairs (4-channel mode), pseudo-differential inputs relative to a common input (up to 8 channels), and single-ended inputs (8-channel mode). Differential operation uses AIP/AIN pins and achieves 70dB SINAD at 100kHz with −88dB crosstalk. Input voltage difference range is configurable as ±VREF+/2 or ±VREF+ via the RANGE bit.
How does the SampleSet™ technology work in the MAX11325ATJ+?
SampleSet™ is a user-programmable channel sequencer in the MAX11325ATJ+ external clock mode. It allows loading a custom 256-step sequence defining order, gain, and input configuration per channel. This eliminates continuous MCU polling, reduces interface traffic, and enables mixed-rate acquisition (e.g., 10Hz temperature + 10kHz vibration) without firmware intervention-directly lowering system power and noise.
What is the purpose of the AOP, AON, AIP, and AIN pins on the MAX11325ATJ+?
AOP and AON are the positive and negative outputs of the internal analog multiplexer; AIP and AIN are the positive and negative inputs to the ADC core. These four pins are brought out to package terminals to allow external signal conditioning-such as filtering, gain adjustment, or isolation-between the mux and ADC. This preserves differential integrity and avoids degrading performance from on-chip routing limitations.
Is the MAX11325ATJ+ pin-compatible with other devices in the MAX11321–MAX11328 family?
The MAX11325ATJ+ shares the same 32-pin TQFN package and pinout as MAX11324ATJ+ (also 8-channel), but differs from 4-channel (MAX11322ATJ+) and 16-channel (MAX11328ATJ+) variants in analog input pin assignment. All family members use identical CS/SCLK/DIN/DOUT/REF+/REF−/CNVST/EOC/VDD/OVDD/DGND/GND pin locations, enabling layout reuse across channel-count variants where input count permits.
MAX11325ATJ+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 12
- 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:
- -
MAX11325ATJ+ FAQ
1.How can I place an order for MAX11325ATJ+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11325ATJ+ 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 MAX11325ATJ+ reliable?
The price and inventory of MAX11325ATJ+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11325ATJ+ is usually 5 days.
3.What payment methods are accepted for MAX11325ATJ+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11325ATJ+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11325ATJ+?
MAX11325ATJ+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11325ATJ+ 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 MAX11325ATJ+?
For technical support, including MAX11325ATJ+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11325ATJ+ requirements.
6.How does Aetrix verify that MAX11325ATJ+ is sourced from the original manufacturer or authorized distributors?
All MAX11325ATJ+ 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 MAX11325ATJ+ meets industry standards.
7.What is the process for return or replacement of MAX11325ATJ+?
All MAX11325ATJ+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX11325ATJ+, 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 MAX11325ATJ+ part is unused and in its original packaging.
Return procedure for MAX11325ATJ+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX11325ATJ+ 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…
