My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX1031BEEG+T
- Part No.:
- MAX1031BEEG+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX1031BEEG+T.pdf
- Description:
- IC ADC 10BIT SAR 24QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,895
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX1031BEEG+T from Maxim Integrated is a 10-bit, 300ksps serial analog-to-digital converter with integrated temperature sensor (±0.7°C accuracy at +25°C), 16-entry FIFO, and internal 2.5V reference. It supports 16 single-ended or 8 true differential input channels in unipolar/bipolar modes, operates from a single +3V supply, and interfaces via 10MHz SPI/QSPI/MICROWIRE. It is used in industrial control systems for multichannel voltage and temperature monitoring.
For engineers reviewing the MAX1031BEEG+T datasheet, MAX1031BEEG+T pinout, MAX1031BEEG+T application, or MAX1031BEEG+T equivalent, key selection criteria include channel count (16 SE / 8 diff), FIFO depth (16 entries), internal temp sensor accuracy, ±1 LSB INL/DNL performance over –40°C to +85°C, and TQFN-28 package compatibility with high-density PCB layouts.
Technical Context
The MAX1031BEEG+T implements a fully differential successive-approximation register (SAR) ADC architecture with on-chip track-and-hold, supporting both internally clocked (4.4MHz oscillator, ±10%) and externally clocked (up to 10MHz SCLK) conversion timing. Its analog front-end accepts configurable single-ended or true differential inputs across 16 pins, with programmable unipolar (0 to VREF) or bipolar (±VREF/2) ranges.
Conversion control is managed through four clock modes selected via CKSEL[1:0]; mode 11 enables external timing for full 300ksps sampling, while modes 00–10 support scan, averaging, and AutoShutdown™. The internal FIFO buffers up to 16 ADC results plus one temperature reading, decoupling data acquisition from serial bus activity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit SAR - delivers 1024 discrete output codes with no missing codes over temperature. |
| Sampling Rate | 300ksps max (externally clocked) - supports high-speed transient capture in data-acquisition systems. |
| INL / DNL | ±1 LSB - ensures monotonicity and linearity critical for precision measurement applications. |
| Internal Reference | 2.50V ±20mV, ±30ppm/°C TC - eliminates need for external reference in cost-sensitive designs. |
| Temperature Sensor | ±0.7°C accuracy at +25°C, ±1.2°C over –40°C to +85°C - enables system-level thermal monitoring without external sensors. |
| Supply Current | 1mA at 300ksps (internal ref), 0.2–5μA shutdown - supports low-power operation in battery-backed or energy-constrained systems. |
| Digital Interface | 10MHz 3-wire SPI/QSPI/MICROWIRE - compatible with standard microcontroller peripherals and reduces PCB routing complexity. |
Pinout & Package
MAX1031BEEG+T is housed in a 28-pin, 5mm × 5mm TQFN package with exposed pad (EP), optimized for thermal performance and board space efficiency in compact industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN0–AIN15 | Analog Input Channels | 16 configurable single-ended or 8 true differential inputs; AIN12–AIN15 available only on MAX1031. |
| REF+/REF− | Reference Inputs | Accept internal 2.5V reference or external differential reference (0–500mV on REF−, 1.0V–VDD+50mV on REF+). |
| CNVST/AIN15 | Active-Low Conversion Start / Analog Input 15 | Configurable as hardware trigger (CNVST) or analog input; dual-function pin enables flexible timing control. |
| SCLK, DIN, DOUT, CS | Serial Interface Signals | Full-duplex SPI-compatible interface; DOUT active on falling SCLK edge, CS enables tri-state output. |
| EOC | End-of-Conversion Output | Active-low open-drain signal indicating valid data ready; behavior varies by clock mode (e.g., pulses per conversion in mode 01). |
| VDD, GND, EP | Power & Ground | +3V supply (2.7–3.6V); EP must be soldered to PCB ground plane for thermal and electrical stability. |
Key Features
| Feature | Design Value |
|---|---|
| 16-channel analog multiplexer with true differential T/H | Supports simultaneous configuration of 8 differential pairs (e.g., AIN0/AIN1, AIN2/AIN3) with common-mode noise rejection. |
| 16-entry FIFO buffer | Stores up to 16 ADC results + 1 temperature reading, enabling burst acquisition without serial bus contention. |
| Integrated temperature sensor | Delivers calibrated Celsius readings at 1/8°C resolution in two's complement format, using internal reference exclusively. |
| Four selectable clock modes | Enables flexible timing: hardware-triggered scans (mode 00), single-channel CNVST control (mode 01), serial-initiated conversions (mode 10), or high-speed external timing (mode 11). |
| AutoShutdown™ low-power mode | Reduces supply current to ≤5μA between conversions, extending operational life in intermittent-sampling applications. |
Applications
| Industrial Process Monitoring | Patient Vital Sign Acquisition |
|---|---|
Use Scenario: Real-time monitoring of multiple thermocouple, RTD, and voltage outputs in PLC-based control cabinets. IC Role / Device Role / Timing Role: Multichannel ADC with integrated temp sensor performs synchronized voltage and ambient temperature sampling at 100ksps. Use Value: Eliminates external reference and temperature ICs, reducing BOM count and calibration overhead while maintaining ±1 LSB linearity across –40°C to +85°C. |
Use Scenario: Portable ECG and SpO₂ monitor acquiring lead voltages and onboard thermal feedback for sensor drift compensation. IC Role / Device Role / Timing Role: Simultaneous 8-channel differential ECG signal digitization and local MCU die temperature tracking. Use Value: On-chip FIFO buffers 16 samples before host readout, enabling low-duty-cycle MCU operation and extended battery runtime. |
| Data Logging in Harsh Environments | Automated Test Equipment (ATE) Front-End |
Use Scenario: Battery-powered environmental logger recording temperature, humidity (via analog output sensors), and supply rail voltages in remote field deployments. IC Role / Device Role / Timing Role: Single-supply (+3V) ADC with internal reference and AutoShutdown™ acquires 16-channel snapshots every 10 seconds. Use Value: Internal 2.5V reference stability (±30ppm/°C) ensures consistent measurement accuracy across wide ambient temperature swings without recalibration. |
Use Scenario: Modular ATE slot card performing rapid parametric testing of analog components using programmable channel sequencing. IC Role / Device Role / Timing Role: High-speed (300ksps) externally clocked ADC with scan mode and internal averaging for repeatable DC parameter extraction. Use Value: Configurable clock modes (e.g., mode 11) enable deterministic timing alignment with stimulus generators, improving test repeatability and throughput. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel ADC with temperature sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7953IRHBT | 12-bit resolution, 1MSPS, SPI interface, no integrated temp sensor, requires external reference. | Better resolution/speed but lacks on-chip temperature sensing and internal reference; needs additional components for thermal monitoring. | Select when higher resolution and speed outweigh integration benefits and external sensor/reference are acceptable. |
| AD7927BRUZ | 12-bit, 1MSPS, 8-channel, no FIFO, no temp sensor, internal reference only (2.5V), SPI interface. | Limited to 8 channels and no FIFO or temperature capability; simpler architecture but less feature-rich for complex acquisition sequences. | Choose for cost-sensitive 8-channel applications where FIFO buffering and thermal monitoring are not required. |
Compared with ADS7953IRHBT and AD7927BRUZ, the MAX1031BEEG+T uniquely combines 16-channel flexibility, 16-deep FIFO, integrated temperature sensor, and internal reference in a single +3V TQFN-28 package-reducing system component count and simplifying layout for embedded monitoring systems.
Availability
MAX1031BEEG+T is available at Aetrix Electronics and suitable for industrial process monitoring, portable medical devices, environmental data loggers, and automated test equipment requiring stable component supply and long-term manufacturability.
Supply support for MAX1031BEEG+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
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, medical, and communications applications.
The MAX1027/MAX1029/MAX1031 product line was designed for low-power, multichannel data acquisition in space-constrained systems requiring integrated temperature sensing and minimal external components.
FAQ
What is the maximum sampling rate of the MAX1031BEEG+T, and under what conditions is it achieved?
The MAX1031BEEG+T achieves a maximum sampling rate of 300ksps when operating in externally clocked mode (CKSEL[1:0] = 11) with SCLK up to 10MHz. This requires disabling scan mode and internal averaging. At this rate, conversion time is 2.7μs per sample, and the device draws 1mA from a +3V supply using the internal reference. The 300ksps rate is specified with fSCLK = 4.8MHz (50% duty cycle) and VREF = 2.5V.
Does the MAX1031BEEG+T support true differential input, and how many differential channel pairs are available?
Yes, the MAX1031BEEG+T supports true differential input with eight configurable pairs: AIN0/AIN1, AIN2/AIN3, AIN4/AIN5, AIN6/AIN7, AIN8/AIN9, AIN10/AIN11, AIN12/AIN13, and AIN14/AIN15. All 16 analog input pins can be assigned to differential operation via the setup register. Differential mode provides common-mode noise rejection and supports both unipolar (0 to VREF) and bipolar (±VREF/2) input ranges, with output in two's complement format for bipolar measurements.
How does the internal temperature sensor in the MAX1031BEEG+T function, and what is its accuracy?
The MAX1031BEEG+T integrates a factory-calibrated temperature sensor that measures die temperature with ±0.7°C accuracy at +25°C and ±1.2°C over the full –40°C to +85°C operating range. It operates exclusively with the internal 2.5V reference and outputs results in two's complement format at 1/8°C resolution. Temperature readings are stored in the FIFO alongside ADC results and are overwritten if a new measurement occurs before the previous one is read.
What package type is used for the MAX1031BEEG+T, and what are its key mechanical and thermal characteristics?
The MAX1031BEEG+T uses a 28-pin, 5mm × 5mm TQFN package with exposed pad (EP). The exposed pad must be soldered to a PCB ground plane to ensure proper thermal dissipation and electrical stability. This package supports a continuous power dissipation of 1667mW at +70°C (derating 20.8mW/°C above that), making it suitable for thermally demanding industrial environments while maintaining a compact footprint.
Can the MAX1031BEEG+T operate without an external reference, and what are the specifications of its internal reference?
Yes, the MAX1031BEEG+T can operate fully autonomously using its internal 2.5V reference, eliminating the need for external components. The internal reference delivers 2.48V to 2.52V (±20mV) at +25°C, with a temperature coefficient of ±30ppm/°C and output noise of 200μVRMS. It exhibits ±0.3°C/V power-supply rejection and powers up in 65μs. When enabled, it is used for all temperature measurements and may be selected for voltage conversions via the REFSEL bits in the setup register.
MAX1031BEEG+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 24-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 300k
- Number of Inputs:
- 8, 16
- Input Type:
- Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V
- Features:
- Temperature Sensor
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 24-QSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1031BEEG+T FAQ
1.How can I place an order for MAX1031BEEG+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1031BEEG+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 MAX1031BEEG+T reliable?
The price and inventory of MAX1031BEEG+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1031BEEG+T is usually 5 days.
3.What payment methods are accepted for MAX1031BEEG+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1031BEEG+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1031BEEG+T?
MAX1031BEEG+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1031BEEG+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 MAX1031BEEG+T?
For technical support, including MAX1031BEEG+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1031BEEG+T requirements.
6.How does Aetrix verify that MAX1031BEEG+T is sourced from the original manufacturer or authorized distributors?
All MAX1031BEEG+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 MAX1031BEEG+T meets industry standards.
7.What is the process for return or replacement of MAX1031BEEG+T?
All MAX1031BEEG+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1031BEEG+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 MAX1031BEEG+T part is unused and in its original packaging.
Return procedure for MAX1031BEEG+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX1031BEEG+T 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…
