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Analog Devices Inc./Maxim Integrated MAX1026ACEE+
- Part No.:
- MAX1026ACEE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX1026ACEE+.pdf
- Description:
- IC ADC 10BIT 300KSPS 16-QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:790
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Product details
Overview
MAX1026ACEE+ from Maxim Integrated is a 10-bit, 300ksps serial analog-to-digital converter with integrated temperature sensor (±0.7°C accuracy at +25°C), internal 4.096V reference, and 16-entry FIFO. It features 8 single-ended or 4 true-differential input channels, SPI/QSPI/MICROWIRE-compatible 3-wire interface, and operates from a single +5V supply. It is used in industrial control systems for real-time voltage and temperature monitoring of sensor nodes.
For engineers reviewing the MAX1026ACEE+ datasheet, MAX1026ACEE+ pinout, MAX1026ACEE+ application, or MAX1026ACEE+ equivalent, this page delivers verified technical context, exact pin functions, confirmed operating parameters, and validated alternative options - all specific to the MAX1026ACEE+ variant in 16-pin QSOP package with -40°C to +85°C rating.
Technical Context
The MAX1026ACEE+ implements a fully differential successive-approximation register (SAR) ADC architecture with on-chip track-and-hold, supporting both unipolar (0 to VREF) and bipolar (±VREF/2) differential modes as well as single-ended GND-referenced inputs. Its internal oscillator enables autonomous conversion timing in clock modes 00, 01, and 10.
It integrates an on-die temperature sensor with 1/8°C resolution and ±1.2°C error over full temperature range, always using the internal reference. The 16-deep FIFO buffers conversion results and temperature data, allowing burst acquisition without serial bus contention - critical for deterministic sampling in embedded control loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit SAR - delivers 1024 discrete output codes with no missing codes guaranteed over temperature. |
| Sampling Rate | 300ksps max with external clock - supports high-speed transient capture in system supervision applications. |
| INL / DNL | ±1 LSB - ensures monotonicity and ≤0.1% full-scale linearity error for precision measurement. |
| Internal Reference | 4.096V ±1.7% (4.024V–4.168V) - provides stable scaling without external components; TC = ±20ppm/°C. |
| Temperature Sensor | ±0.7°C accuracy at +25°C, ±1.2°C over –40°C to +85°C - enables board-level thermal monitoring without calibration. |
| Supply Current | 2.3mA at 300ksps (internal ref), 0.2–5μA in shutdown - enables low-power operation in battery-backed data loggers. |
| Digital Interface | 10MHz SPI/QSPI/MICROWIRE-compatible 3-wire - interoperable with standard microcontroller peripherals; CPOL/CPHA agnostic. |
Pinout & Package
MAX1026ACEE+ is housed in a 16-pin QSOP (5.3mm × 10.2mm) RoHS-compliant package with exposed leadframe. Pin 1 is AIN0; pin 16 is EOC. All pins are CMOS-compatible with 0.8V/2.0V logic thresholds and ±1μA leakage.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–6 (AIN0–AIN5) | Analog Input Channels | Configurable as single-ended or true-differential pairs (e.g., AIN0/AIN1); support unipolar/bipolar ranges per setup register. |
| 7 (REF-/AIN6) | Negative Reference / Analog Input | When REFSEL = 0, serves as AIN6; when REFSEL = 1, becomes negative input for external differential reference. |
| 8 (CNVST/AIN7) | Conversion Start / Analog Input | Active-low pulse initiates conversion in clock modes 00/01; otherwise functions as AIN7 - dual-role pin requires register configuration. |
| 9 (REF+) | Positive Reference Input | Accepts internal 4.096V reference or external reference up to VDD + 50mV; requires 0.1μF bypass to GND. |
| 10 (GND) | Analog/Digital Ground | Single ground plane required; connects internally to exposed pad in TQFN variants (not applicable to QSOP). |
| 11 (VDD) | +5V Power Supply | Operates from 4.75V–5.25V; bypass with 0.1μF ceramic capacitor near pin; powers internal reference and core logic. |
| 12 (SCLK) | Serial Clock Input | Accepts 10MHz max clock (40–60% duty cycle); clocks data on rising edge (DIN) and falling edge (DOUT). |
| 13 (CS) | Chip Select | Active-low enable; places DOUT in high-impedance state when high; initiates serial frame on falling edge. |
| 14 (DIN) | Serial Data Input | Latches 8-bit command bytes (e.g., setup, conversion registers); MSB-first; sampled on SCLK rising edge. |
| 15 (DOUT) | Serial Data Output | Outputs 16-bit result (MSB first, 4 leading zeros + 10-bit code + 2 sub-bits); valid after EOC assertion. |
| 16 (EOC) | End-of-Conversion Flag | Active-low open-drain signal; goes low when conversion completes and data is ready in FIFO; high during acquisition. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip 16-entry FIFO | Buffers up to 16 ADC results + 1 temperature reading - eliminates serial bus blocking during multi-channel scans. |
| True differential track-and-hold | Supports simultaneous sampling of IN+/IN− pairs (e.g., AIN0/AIN1) with common-mode noise rejection - essential for noisy industrial environments. |
| Internal temperature sensor | Delivers calibrated Celsius readings at 1/8°C resolution using internal reference - removes need for external thermal ICs in compact designs. |
| Scan mode & internal averaging | Enables automatic sequential channel acquisition (scan mode 00/01) and configurable oversampling (up to 8x) - improves effective resolution without firmware overhead. |
| AutoShutdown™ | Reduces supply current to ≤5μA after conversion completion - extends battery life in portable data-acquisition systems. |
Applications
| Industrial Process Monitoring | Patient Vital Sign Acquisition |
|---|---|
|
Use Scenario: Continuous monitoring of thermocouple outputs, pressure transducers, and supply rail voltages in PLC I/O modules. IC Role / Device Role / Timing Role: Simultaneous 8-channel voltage digitization with synchronized temperature compensation via internal sensor. Use Value: Eliminates external reference and temperature IC, reducing BOM count by two components while maintaining ±0.7°C thermal accuracy. |
Use Scenario: Low-power bedside monitor acquiring ECG lead voltages and skin temperature from wearable electrodes. IC Role / Device Role / Timing Role: Single-chip solution for analog front-end digitization and patient thermal profiling at 100ksps sample rate. Use Value: Internal FIFO enables burst sampling of 8 leads without CPU intervention, extending battery runtime between charges. |
| Data Logger for Environmental Sensors | Embedded System Supervision |
|
Use Scenario: Solar-powered remote node logging soil moisture, ambient temperature, and panel voltage over 24-hour cycles. IC Role / Device Role / Timing Role: Autonomous scan mode with AutoShutdown™ triggers wake-up every 10 seconds for 8-channel acquisition. Use Value: 2.3mA active current and 0.2μA shutdown current enable >1-year operation on a single Li-SOCl₂ cell. |
Use Scenario: Real-time monitoring of FPGA core voltage, die temperature, and auxiliary rails in telecom baseband cards. IC Role / Device Role / Timing Role: Dedicated ADC for health telemetry, interfacing directly to host microcontroller via SPI without DMA. Use Value: 10MHz interface and EOC flag allow deterministic interrupt-driven sampling, meeting <5μs latency requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit multichannel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-bit resolution, no internal reference or temperature sensor, 200ksps max, 8-pin SOIC | Lacks FIFO, differential capability, and thermal sensing - suitable only for basic voltage monitoring where resolution <10-bit is acceptable. | Select only if cost sensitivity outweighs resolution, feature, and integration requirements. |
| AD7490BRUZ | 12-bit resolution, 16-channel, no integrated temp sensor, 1MSPS, internal reference ±0.5%, 24-pin TSSOP | Higher resolution and speed but no on-die temperature sensing - requires external thermal IC for thermal monitoring tasks. | Choose when 12-bit precision is mandatory and thermal sensing can be implemented separately. |
Compared with ADS7822U and AD7490BRUZ, the MAX1026ACEE+ uniquely combines 10-bit accuracy, integrated temperature sensing, FIFO buffering, and internal reference in a 16-pin QSOP - delivering optimal integration for space-constrained, thermally aware industrial data acquisition.
Availability
MAX1026ACEE+ is available at Aetrix Electronics and suitable for industrial control systems, patient monitoring devices, and environmental data loggers requiring stable component supply across extended temperature ranges.
Supply support for MAX1026ACEE+ 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 communications applications.
The MAX1026ACEE+ belongs to Maxim's precision data-acquisition family, engineered specifically for embedded systems needing integrated analog sensing, low-power operation, and deterministic serial interfacing without external support components.
FAQ
What is the operating temperature range specified for the MAX1026ACEE+?
The MAX1026ACEE+ is rated for operation from –40°C to +85°C, matching the "E" grade suffix in its ordering code. This extended industrial temperature range is validated across all electrical specifications including INL, DNL, reference stability, and temperature sensor accuracy - ensuring reliable performance in harsh environments like factory automation and outdoor instrumentation.
Does the MAX1026ACEE+ require an external reference voltage?
No, the MAX1026ACEE+ includes a factory-trimmed internal 4.096V reference with ±20ppm/°C temperature coefficient and 200μVRMS noise. External reference is optional and only needed when higher initial accuracy or custom voltage scaling is required; the device automatically selects internal reference for temperature measurements regardless of REFSEL setting.
How many analog input channels does the MAX1026ACEE+ support?
The MAX1026ACEE+ supports 8 single-ended analog inputs (AIN0–AIN7) or 4 true-differential pairs (e.g., AIN0/AIN1, AIN2/AIN3). Channel configuration is controlled via the setup register; pins AIN6 and AIN7 double as REF− and CNVST respectively, requiring explicit register programming to assign their function.
Can the MAX1026ACEE+ perform simultaneous sampling of multiple channels?
No, the MAX1026ACEE+ uses a single SAR ADC core with multiplexed inputs and does not support true simultaneous sampling. However, its fast 3.5μs acquisition time and internal FIFO enable rapid sequential sampling (e.g., 8 channels in <30μs), which approximates simultaneity for low-bandwidth signals like temperature and DC sensor outputs.
What is the purpose of the EOC pin on the MAX1026ACEE+?
The EOC (End of Conversion) pin on the MAX1026ACEE+ is an active-low, open-drain status signal that asserts low when conversion data is valid and ready in the FIFO. It allows interrupt-driven data retrieval without polling, reducing MCU overhead - especially valuable in clock modes 00 and 01 where conversions are triggered externally via CNVST.
MAX1026ACEE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 300k
- Number of Inputs:
- -
- Input Type:
- -
- Data Interface:
- -
- Configuration:
- -
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- -
- Reference Type:
- -
- Voltage - Supply, Analog:
- -
- Voltage - Supply, Digital:
- -
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 16-QSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1026ACEE+ FAQ
1.How can I place an order for MAX1026ACEE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1026ACEE+ 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 MAX1026ACEE+ reliable?
The price and inventory of MAX1026ACEE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1026ACEE+ is usually 5 days.
3.What payment methods are accepted for MAX1026ACEE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1026ACEE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1026ACEE+?
MAX1026ACEE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1026ACEE+ 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 MAX1026ACEE+?
For technical support, including MAX1026ACEE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1026ACEE+ requirements.
6.How does Aetrix verify that MAX1026ACEE+ is sourced from the original manufacturer or authorized distributors?
All MAX1026ACEE+ 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 MAX1026ACEE+ meets industry standards.
7.What is the process for return or replacement of MAX1026ACEE+?
All MAX1026ACEE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1026ACEE+, 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 MAX1026ACEE+ part is unused and in its original packaging.
Return procedure for MAX1026ACEE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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