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Analog Devices Inc./Maxim Integrated MAX110AEWE+
- Part No.:
- MAX110AEWE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX110AEWE+.pdf
- Description:
- IC ADC 14BIT SIGMA-DELTA 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:162
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Product details
Overview
MAX110AEWE+ from Maxim Integrated is a ±14-bit, 2-channel serial analog-to-digital converter (ADC) with internal auto-calibration, operating from ±5V supplies and delivering 0.03% linearity over -3V to +3V differential input range. It achieves up to 50 conversions/sec with 50Hz/60Hz rejection, consumes only 550µA active current and 4µA in power-down mode, and targets high-resolution battery-powered sensing and panel meter applications.
For engineers reviewing the MAX110AEWE+ datasheet, MAX110AEWE+ pinout, MAX110AEWE+ application, or MAX110AEWE+ equivalent, this page delivers verified technical context, exact pin functions, real-world use cases in process control and temperature measurement, and two validated alternative parts with documented functional and application-level differences.
Technical Context
The MAX110AEWE+ implements a first-order sigma-delta architecture with integrated voltage-to-current converter, integrator, comparator, 1-bit DAC, and up/down counter. Its 16-bit serial output includes sign (POL), overrange (OFL), and 14 data bits in twos-complement format, synchronized via SPI/QSPI/MICROWIRE-compatible interface.
It supports both external clock (via XCLK) and internal RC oscillator (selected by RCSEL), with programmable oversampling clock division (÷1/÷2/÷4). Conversion timing is controlled by CONV1–CONV4 bits, enabling synchronous conversion times from 10.24 ms to 204.8 ms depending on clock rate and division ratio.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | ±14-bit plus sign and overrange bit (16-bit serial output); enables precise detection of sub-millivolt differential signals within ±3V range. |
| Linearity (INL) | ±0.03% FSR (typical); ensures accurate representation of analog inputs without missing codes across full scale. |
| Supply Current | 550 µA (active), 4 µA (power-down); allows multi-year operation on coin-cell batteries in remote sensor nodes. |
| Input Range | Differential ±3 V (with ±5 V supplies); supports industrial transducer outputs (e.g., 4–20 mA loop receivers with shunt). |
| Conversion Rate | Up to 50 conversions/sec; sufficient for slow-varying physical parameters like temperature, pressure, or weight. |
| Power Supply Rejection | 30 ppm/V (typical); maintains accuracy despite ±5% supply variation-critical in unregulated battery or rail-shared systems. |
| 50/60 Hz Rejection | Integrated digital filtering rejects mains-induced noise without external notch filters or software averaging. |
Pinout & Package
MAX110AEWE+ is housed in a 16-pin wide SO (SOIC-W) package with 1.27 mm pitch, RoHS-compliant, and rated for 0°C to +70°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1+, IN1- | Differential Channel 1 Input | Accepts ±3 V differential signal; polarity determines sign bit (POL) in output word. |
| IN2+, IN2- | Differential Channel 2 Input | Second independent analog input pair; selected via CHS bit in control register. |
| REF+, REF- | Differential Reference Inputs | Set full-scale range (e.g., ±1.5 V → ±3 V input span); internal calibration uses these for gain/offset correction. |
| VDD, VSS | Positive/Negative Power Supplies | Require ±5 V ±5%; VSS must remain ≥ -6 V to avoid absolute maximum rating violation. |
| CS | Chip Select | Active-low enable for serial interface; rising edge triggers conversion if NO-OP = 1 in prior control word. |
| SCLK | Serial Clock Input | TTL/CMOS-compatible; DC to 2 MHz; controls data shift-in/out timing on rising/falling edges respectively. |
| DIN, DOUT | Serial Data In/Out | Full-duplex 16-bit I/O; DOUT is high-impedance when CS is high, enabling bus sharing. |
| BUSY | Conversion Status Output | Active-low open-drain signal; indicates conversion in progress; used for interrupt-driven µP synchronization. |
| RCSEL | Oscillator Mode Select | High = internal RC oscillator enabled on XCLK; low = external clock applied to XCLK. |
| XCLK | Oversampling Clock I/O | Input for external clock or output for internal RC oscillator; requires ≤1 MΩ pull-up/down in RC mode. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-calibration under µP control | Enables offset and gain error correction without external trim components-reduces BOM count and calibration labor. |
| No external components required | Eliminates need for precision resistors, capacitors, or op-amps in reference or signal conditioning paths. |
| 50Hz/60Hz rejection | Hardware-based digital filtering removes mains interference without CPU overhead or firmware complexity. |
| Two differential input channels | Reduces system component count vs. dual single-channel ADCs; simplifies PCB layout with shared reference and clock resources. |
| Low-power shutdown mode | 4 µA quiescent current enables wake-on-event architectures where µP initiates conversion only when needed. |
Applications
| Process Control | Weigh Scales |
|---|---|
Use Scenario: Monitoring analog outputs from 4–20 mA pressure or flow transmitters in PLC I/O modules. IC Role / Device Role / Timing Role: High-accuracy digitization of slow-varying industrial signals with built-in noise rejection and calibration stability. Use Value: Eliminates external instrumentation amplifiers and anti-aliasing filters while maintaining ±0.03% linearity across temperature. |
Use Scenario: Reading bridge sensor outputs (e.g., load cells) in commercial weighing terminals. IC Role / Device Role / Timing Role: Differential ADC with programmable conversion time to optimize resolution vs. speed trade-off for stable weight readings. Use Value: Internal auto-calibration compensates for thermal drift in strain-gauge bridges without manual recalibration cycles. |
| Panel Meters | Temperature Measurement |
Use Scenario: Driving 4-digit LED displays in benchtop multimeters or HVAC control panels. IC Role / Device Role / Timing Role: Serial-output ADC interfacing directly to microcontroller with minimal GPIO usage (3-wire SPI). Use Value: 16-pin SO package and no external components reduce board area and assembly cost versus discrete front-end solutions. |
Use Scenario: Digitizing thermocouple or RTD signals in industrial temperature controllers. IC Role / Device Role / Timing Role: High CMRR (≥80 dB) and 50/60 Hz rejection suppress common-mode noise from heater circuits and AC wiring. Use Value: ±0.03% INL ensures <0.1°C error in Pt100-based measurements over 0–100°C range without software linearization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 14-bit differential serial ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1115IRUGT | Single-supply (2.0–5.5 V), 16-bit, I²C interface, internal PGA (up to 16×), no auto-calibration circuitry. | Requires external gain/offset compensation for high-accuracy industrial use; better suited for low-cost consumer sensors than calibrated process monitoring. | Select when I²C bus availability, smaller footprint (10-pin X2QFN), or programmable gain outweigh need for guaranteed ±0.03% linearity. |
| AD7730BRUZ | 24-bit sigma-delta, ±5 V supplies, 2-channel differential, SPI interface, 0.003% INL (typ), higher power (1.2 mA active). | Delivers 10× higher resolution but at 3× higher current and cost; overkill for applications where 14-bit precision meets spec. | Select when system requires <10 ppm total error budget or future-proofing for higher-grade metrology; avoid if 550 µA supply current is constrained. |
Compared with ADS1115IRUGT and AD7730BRUZ, the MAX110AEWE+ uniquely balances 14-bit precision, ±5 V dual-supply compatibility, self-calibration, and ultra-low 550 µA active current-making it optimal for space- and power-constrained industrial instruments requiring certified accuracy without firmware compensation.
Availability
MAX110AEWE+ is available at Aetrix Electronics and suitable for process control systems, weigh scale electronics, and panel meter designs requiring stable component supply, long-term lifecycle support, and traceable sourcing for industrial OEMs.
Supply support for MAX110AEWE+ 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, automotive, and communications markets.
The MAX110 family was designed specifically for high-accuracy, low-power, dual-channel data acquisition in space-constrained industrial instrumentation-emphasizing self-calibration, noise immunity, and minimal external component count.
FAQ
What is the operating temperature range for MAX110AEWE+?
The MAX110AEWE+ is specified for 0°C to +70°C ambient operation. This grade (denoted by 'A' in the suffix) matches commercial industrial environments and is validated per the MAX110 datasheet's "MAX11__C__" ordering code. It does not support extended (-40°C to +85°C) or military (-55°C to +125°C) ranges. The device's internal calibration remains effective across this full range, maintaining ±0.03% INL performance without external intervention.
Does MAX110AEWE+ require external reference components?
No, the MAX110AEWE+ does not require external reference components. It accepts differential reference inputs (REF+, REF-) and performs internal gain and offset calibration using those references. The datasheet confirms "no external components required" as a core feature, and electrical characteristics (e.g., full-scale error drift) are specified with VREF+ = 1.5 V and VREF- = -1.5 V-demonstrating operation with standard reference voltages without trimming networks.
How does the auto-calibration function work in MAX110AEWE+?
The MAX110AEWE+ auto-calibration is executed under microprocessor control via the serial interface. Writing a control word with CAL = 1 initiates offset nulling; writing with CAL = 0 and DV2 = 1 performs gain calibration. Both operations use internal switches to short inputs or apply reference-derived voltages, measuring errors and updating internal DACs. This occurs in-system, eliminating factory trim and enabling field recalibration-confirmed in the "3-Step Calibration" section of the MAX110 datasheet.
Can MAX110AEWE+ interface directly with an SPI host without level-shifting?
Yes, MAX110AEWE+ interfaces directly with standard 5 V SPI hosts. Its digital pins (CS, SCLK, DIN, DOUT, BUSY) are TTL/CMOS-compatible with VIH = 2.4 V min and VIL = 0.8 V max at VDD = 5 V, matching typical µC I/O thresholds. The datasheet explicitly states compatibility with SPI™, QSPI™, and MICROWIRE™ standards, and timing diagrams (Figure 6, 8a, 8b) validate direct connection using 5 V logic levels without translation circuitry.
What is the absolute maximum input voltage allowed at IN1+ or IN2- pins of MAX110AEWE+?
The absolute maximum input voltage at any analog input pin (IN1+, IN1-, IN2+, IN2-) of the MAX110AEWE+ is VSS + 2.25 V to VDD – 2.25 V. With ±5 V supplies (VDD = +5 V, VSS = –5 V), this defines a safe range of –2.75 V to +2.75 V. Exceeding these limits risks permanent damage, as stated in the Absolute Maximum Ratings table. The functional input range remains ±3 V differential, but pin voltage must stay within the absolute bounds regardless of differential swing.
MAX110AEWE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 50
- Number of Inputs:
- 2
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- MUX-ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- External
- Voltage - Supply, Analog:
- ±5V
- Voltage - Supply, Digital:
- ±5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX110AEWE+ FAQ
1.How can I place an order for MAX110AEWE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX110AEWE+ 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 MAX110AEWE+ reliable?
The price and inventory of MAX110AEWE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX110AEWE+ is usually 5 days.
3.What payment methods are accepted for MAX110AEWE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX110AEWE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX110AEWE+?
MAX110AEWE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX110AEWE+ 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 MAX110AEWE+?
For technical support, including MAX110AEWE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX110AEWE+ requirements.
6.How does Aetrix verify that MAX110AEWE+ is sourced from the original manufacturer or authorized distributors?
All MAX110AEWE+ 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 MAX110AEWE+ meets industry standards.
7.What is the process for return or replacement of MAX110AEWE+?
All MAX110AEWE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX110AEWE+, 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 MAX110AEWE+ part is unused and in its original packaging.
Return procedure for MAX110AEWE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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