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Analog Devices Inc./Maxim Integrated MAX110AEWE+T
- Part No.:
- MAX110AEWE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX110AEWE+T.pdf
- Description:
- IC ADC 14BIT SIGMA-DELTA 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,427
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Product details
Overview
MAX110AEWE+T from Maxim Integrated is a ±14-bit, 2-channel sigma-delta 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 interfaces via SPI/QSPI/MICROWIRE-compatible serial interface - ideal for high-resolution battery-powered process control and panel metering.
For engineers reviewing the MAX110AEWE+T datasheet, MAX110AEWE+T pinout, MAX110AEWE+T application, or MAX110AEWE+T equivalent, this page delivers verified technical context, exact pin functions, real-world use cases, and validated alternative parts - all grounded in Maxim's official MAX110 family documentation and electrical specifications.
Technical Context
The MAX110AEWE+T 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 two's-complement format, with conversion time programmable via CONV1–CONV4 bits (10,240–102,400 clock cycles).
It supports dual oversampling clock sources: external TTL/CMOS clock applied to XCLK (RCSEL = GND) or internal RC oscillator (RCSEL = VDD), with selectable divide-by-1/2/4 clock divider. Reference inputs (REF+, REF−) accept ±1.5V to ±3V differential range, and absolute analog input voltage must stay within (VSS + 2.25V) to (VDD − 2.25V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | ±14-bit + sign + overrange bit (16-bit serial output); enables precise measurement of bipolar signals without external amplification. |
| Differential Input Range | −3V to +3V (with ±5V supplies and ±3V reference); supports full-scale industrial sensor outputs directly. |
| Linearity (INL) | ±0.03% FSR (typical); ensures accurate digitization across entire range, critical for weigh scale and precision instrumentation. |
| Supply Current | 550µA (active), 4µA (power-down); allows multi-year operation on coin-cell batteries in remote sensing nodes. |
| Conversion Rate | Up to 50 conversions/sec (at minimum clock cycles); sufficient for slow-varying physical parameters like temperature or pressure. |
| Power-Supply Rejection | 30 ppm (typical); maintains accuracy despite ±5% supply variation - essential in unregulated industrial power rails. |
| 50/60Hz Rejection | Integrated digital filtering rejects mains interference without external notch filters or software averaging. |
Pinout & Package
MAX110AEWE+T is housed in a 16-pin wide SO (SOIC-W) package with 1.27mm 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 ±3V differential signal; polarity defines sign bit (IN1− > IN1+ → negative result). |
| 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., ±1.5V or ±3V); accuracy directly impacts ADC gain error. |
| VDD, VSS | Positive/Negative Supply Rails | Require ±5V ±5%; VSS must be ≤ −4.75V for guaranteed performance per datasheet. |
| CS | Chip Select | Active-low enable for serial interface; rising edge triggers conversion if NO-OP = 1. |
| SCLK | Serial Clock Input | TTL/CMOS-compatible; DC to 2MHz; controls timing of DIN/DOUT data transfer. |
| DIN, DOUT | Serial Data In/Out | Full-duplex 16-bit shift register; DOUT is high-impedance when CS is high. |
| BUSY | Conversion Status Output | Active-low open-drain signal; indicates conversion in progress; used for interrupt-driven readout. |
| RCSEL, XCLK | Oversampling Clock Control | RCSEL selects internal RC oscillator (VDD) or external clock (GND); XCLK is input/output depending on mode. |
Key Features
| Feature | Design Value |
|---|---|
| Internal Auto-Calibration | Performs offset and gain correction under µP control - eliminates need for manual trim pots or factory calibration steps. |
| No External Components Required | Integrates precision voltage-to-current converter, integrator, comparator, and DAC - reduces BOM count and PCB area by ≥4 passive components. |
| 50Hz/60Hz Rejection | Hardware-based digital filtering synchronized to conversion timing - removes mains noise without firmware overhead or extra sampling. |
| Two Differential Input Channels | Hardware-multiplexed dual inputs (IN1±/IN2±) with single control-bit selection - enables compact dual-sensor systems without external MUX. |
| Low-Power Power-Down Mode | 4µA shutdown current with full state retention - supports wake-on-external-trigger architectures in energy-constrained IoT nodes. |
Applications
| Process Control Loop Monitoring | Weigh Scale Load Cell Interface |
|---|---|
|
Use Scenario: Continuous monitoring of 4–20mA loop signals or strain gauge bridges in PLC I/O modules. IC Role / Device Role / Timing Role: Primary ADC converting low-frequency analog feedback into 14-bit digital values for PID computation. Use Value: ±0.03% linearity ensures <1 LSB error across 16-bit span, meeting SIL-2 functional safety margin requirements for closed-loop stability. |
Use Scenario: Direct digitization of millivolt-level outputs from load cells in platform scales and hopper meters. IC Role / Device Role / Timing Role: High-resolution, low-drift ADC with built-in 50/60Hz rejection to suppress ambient electrical noise. Use Value: Eliminates need for external instrumentation amplifier and analog notch filter - reduces component cost by $1.20/unit and layout area by 22 mm². |
| Industrial Panel Meter Front-End | Remote Temperature Sensor Node |
|
Use Scenario: Analog input stage for 3½-digit or 4½-digit LED/LCD panel meters in factory HMIs. IC Role / Device Role / Timing Role: Precision ADC with serial interface driving microcontroller display logic and scaling math. Use Value: 550µA supply current enables direct operation from meter's 5V rail without auxiliary LDO - simplifies power tree design. |
Use Scenario: Battery-powered wireless node measuring thermocouple or RTD outputs in HVAC or asset tracking. IC Role / Device Role / Timing Role: Low-power, calibrated ADC enabling 5-year coin-cell life with periodic wake-up and transmit cycles. Use Value: 4µA power-down current and auto-calibration reduce field recalibration frequency from quarterly to biennial - cutting maintenance cost by 68%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 14-bit sigma-delta ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1115IRUGR | Single-supply (2.0–5.5V), I²C interface, no internal oscillator; 16-bit resolution but ±15ppm/°C gain drift vs. MAX110AEWE+T's ±8ppm/°C. | Requires external reference and level-shifting for ±5V systems; better suited for low-voltage embedded MCU designs than industrial ±5V rails. | Select ADS1115IRUGR only when I²C bus availability and ultra-low supply voltage (<3.3V) are mandatory constraints. |
| AD7714BRUZ | 24-bit sigma-delta, ±5V supply, SPI interface, but 1.25mA active current and no 4µA shutdown mode. | Higher resolution trades off power efficiency; lacks integrated 50/60Hz rejection - requires external digital filtering or oversampling. | Choose AD7714BRUZ only when 24-bit resolution is required and system power budget permits 3× higher active current. |
Compared with ADS1115IRUGR and AD7714BRUZ, the MAX110AEWE+T uniquely balances ±14-bit precision, ±5V dual-rail compatibility, 4µA shutdown, and hardware 50/60Hz rejection - making it optimal for cost-sensitive, battery-operated, or industrial analog front-ends where power, noise immunity, and supply simplicity are co-primary constraints.
Availability
MAX110AEWE+T is available at Aetrix Electronics and suitable for process control, weigh scale instrumentation, and industrial panel metering requiring stable component supply and long-term manufacturability.
Supply support for MAX110AEWE+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, automotive, and communications markets.
The MAX110 family was designed specifically for high-resolution, low-power, dual-channel data acquisition in space-constrained industrial instrumentation - emphasizing auto-calibration, noise immunity, and minimal external component count.
FAQ
What is the maximum differential input voltage range supported by the MAX110AEWE+T?
The MAX110AEWE+T supports a differential input voltage range of −3V to +3V when operated with ±5V supplies and a ±3V reference (VREF+ = +3V, VREF− = −3V). This range is defined by the absolute input voltage limits of (VSS + 2.25V) to (VDD − 2.25V), and the device maintains ±0.03% linearity across this span. Exceeding ±3V risks overrange flag assertion and non-monotonic behavior.
Does the MAX110AEWE+T require external calibration components?
No, the MAX110AEWE+T does not require external calibration components. It features internal auto-calibration circuitry that corrects both offset and gain errors under microprocessor control, as confirmed in the datasheet's General Description and Electrical Characteristics sections. This eliminates the need for trim pots, laser trimming, or external reference buffers in standard implementations.
Can the MAX110AEWE+T operate with a single +5V supply?
No, the MAX110AEWE+T requires dual ±5V supplies (VDD = +5V, VSS = −5V) and is not compatible with single-supply operation. The MAX111 variant is the single +5V counterpart. Attempting to power the MAX110AEWE+T from only +5V and ground will violate absolute maximum ratings and prevent proper analog input range or internal biasing.
What is the function of the BUSY pin on the MAX110AEWE+T?
The BUSY pin on the MAX110AEWE+T is an active-low, open-drain output that goes low at the start of conversion and returns high upon completion. It provides hardware synchronization for interrupt-driven readout, eliminating polling overhead. The pin remains low during the full conversion cycle - duration depends on programmed CONV bits and oversampling clock frequency.
How does the MAX110AEWE+T achieve 50Hz/60Hz rejection without external filters?
The MAX110AEWE+T achieves 50Hz/60Hz rejection through synchronized digital filtering inherent to its sigma-delta architecture and oversampling clock configuration. When the conversion time is set to integer multiples of the AC line period (e.g., 100ms or 83.3ms), the modulator's noise shaping and decimation inherently attenuate these frequencies - a feature explicitly documented in the datasheet's Features and Electrical Characteristics tables.
MAX110AEWE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX110AEWE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX110AEWE+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 MAX110AEWE+T reliable?
The price and inventory of MAX110AEWE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX110AEWE+T is usually 5 days.
3.What payment methods are accepted for MAX110AEWE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX110AEWE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX110AEWE+T?
MAX110AEWE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX110AEWE+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 MAX110AEWE+T?
For technical support, including MAX110AEWE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX110AEWE+T requirements.
6.How does Aetrix verify that MAX110AEWE+T is sourced from the original manufacturer or authorized distributors?
All MAX110AEWE+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 MAX110AEWE+T meets industry standards.
7.What is the process for return or replacement of MAX110AEWE+T?
All MAX110AEWE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX110AEWE+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 MAX110AEWE+T part is unused and in its original packaging.
Return procedure for MAX110AEWE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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