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Analog Devices Inc./Maxim Integrated MAX110BEWE+
- Part No.:
- MAX110BEWE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX110BEWE+.pdf
- Description:
- IC ADC 14BIT SIGMA-DELTA 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,295
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Product details
Overview
MAX110BEWE+ from Maxim Integrated is a ±14-bit, 2-channel sigma-delta analog-to-digital converter (ADC) with internal auto-calibration, differential input architecture, and SPI/QSPI/MICROWIRE-compatible serial interface. It operates from ±5V supplies, supports ±3V differential input range, achieves ±0.03% INL (max), consumes 550µA active current and 4µA in power-down mode, and delivers up to 50 conversions/sec - ideal for high-accuracy battery-powered process monitoring and panel metering.
For engineers reviewing the MAX110BEWE+ datasheet, MAX110BEWE+ pinout, MAX110BEWE+ application, or MAX110BEWE+ equivalent, this page provides verified technical context, calibrated performance parameters, package-specific pin mapping, real-world use cases, and validated alternative options - all grounded in Maxim's official MAX110/MAX111 datasheet (Rev 5, 11/98).
Technical Context
The MAX110BEWE+ implements a first-order sigma-delta modulator with integrated voltage-to-current converter, precision integrator, comparator, 1-bit DAC, and 16-bit up/down counter. Its oversampling clock (fOSC) is programmable via divide-by-1/2/4 control bits and sourced either from an internal RC oscillator (RCSEL = VDD) or external TTL/CMOS clock applied to XCLK (RCSEL = GND).
Conversion output is 16-bit twos-complement serial data: sign bit (POL), overrange flag (OFL), and 14 data bits (MSB-first). Internal auto-calibration corrects both offset and gain errors under µP control, enabling stable ±14-bit resolution plus overrange without external components across temperature and supply variations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | ±14-bit + sign + overrange (16-bit serial output); guarantees no missing codes over full input range |
| Differential Input Range | ±3V with ±5V supplies; absolute input pin voltage limited to VSS + 2.25V to VDD – 2.25V |
| INL (Relative Accuracy) | ±0.03% FSR (max, -VREF to +VREF); ensures <±2 LSB error at 14-bit scale |
| Supply Current | 550µA typical (VDD = 5V, VSS = -5V); enables multi-year operation on coin-cell batteries |
| Power-Down Current | 4µA (PD = 1, PDX = 1); preserves system-level energy budget during idle intervals |
| Conversion Rate | Up to 50 conversions/sec (81,920 clocks/conv at fXCLK = 1MHz, ÷2 mode); supports low-frequency sensor sampling |
| Reference Input | Differential: VREF+ and VREF− pins accept ±1.5V to ±3V total swing; enables flexible scaling of input range |
Pinout & Package
MAX110BEWE+ is packaged in a 16-pin Wide SO (SOIC-W) surface-mount package with standard 0.3-inch body width and 1.27mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN1+ | Channel 1 positive analog input | Differential input pair for first measurement channel; referenced to IN1− |
| 2 REF− | Negative reference input | Defines lower bound of differential reference voltage (VREF = REF+ − REF−) |
| 3 REF+ | Positive reference input | Defines upper bound of differential reference voltage; sets full-scale range |
| 4 VDD | Positive supply input (+5V) | Must be connected to +4.75V to +5.25V; powers analog and digital circuitry |
| 5 RCSEL | Oscillator mode select | High = internal RC oscillator enabled; Low = external clock accepted on XCLK |
| 6 XCLK | External clock input / RC oscillator output | Accepts 0.25–1.25MHz TTL/CMOS clock when RCSEL = GND; outputs RC clock when RCSEL = VDD |
| 7 SCLK | Serial interface clock input | DC to 2MHz static clock; controls timing of DIN/DOUT data transfer and conversion trigger |
| 8 DIN | Serial data input | Loads 16-bit control word (NO-OP, CONV bits, CAL, PD, etc.) on SCLK rising edge |
| 9 DOUT | Serial data output | Outputs 16-bit result (POL, OFL, D13–D0) on SCLK falling edge; high-Z when CS high |
| 10 BUSY | Conversion status indicator | Active-low open-drain signal; asserts low at conversion start, releases high at completion |
| 11 IN2+ | Channel 2 positive analog input | Second differential input pair; shares same reference and conversion engine as IN1+/IN1− |
| 12 IN2− | Channel 2 negative analog input | Completes second differential input path; polarity defines signed result interpretation |
| 13 IN1− | Channel 1 negative analog input | Complements IN1+; differential voltage (IN1+ − IN1−) determines conversion value |
| 14 VSS | Negative supply input (−5V) | Must be connected to −4.75V to −5.25V; required for MAX110 family operation |
| 15 CS | Chip-select input | Active-low enable for serial interface; conversion starts on rising edge if NO-OP = 1 |
| 16 GND | Digital ground | Return path for digital I/O; must be tied to system AGND with low-impedance connection |
Key Features
| Feature | Design Value |
|---|---|
| Auto-calibration under µP control | Enables offset and gain correction without external trim components or manual calibration steps |
| Two fully differential input channels | Supports simultaneous high-common-mode-rejection measurements on IN1 and IN2 without multiplexer-induced errors |
| 50Hz/60Hz rejection | Integrated oversampling and digital filtering suppress line-frequency interference in industrial environments |
| No external components required | Eliminates need for external reference, clock, or calibration circuitry - reduces BOM count and layout area |
| SPI/QSPI/MICROWIRE compatibility | Interoperates with common microcontroller serial peripherals using standard timing and framing |
| 16-pin SO package | Industry-standard footprint enables drop-in replacement and automated assembly in space-constrained designs |
Applications
| Process Control Sensor Interface | Industrial Panel Meter |
|---|---|
Use Scenario: Monitoring thermocouple or strain-gauge outputs in PLC analog input modules with ±10V field wiring. IC Role / Device Role / Timing Role: Primary ADC converting differential sensor signals to digital for µP-based control loop execution. Use Value: ±0.03% INL and 50Hz rejection ensure accurate closed-loop regulation despite EMI and supply ripple in factory floors. |
Use Scenario: Front-panel voltage/current display in bench power supplies requiring 0.01% readout resolution. IC Role / Device Role / Timing Role: High-stability digitizer feeding real-time numeric display and overvoltage protection logic. Use Value: Auto-calibration maintains accuracy over temperature drift and long-term aging without field recalibration. |
| Weigh Scale Load Cell Readout | Data-Acquisition System Channel |
Use Scenario: Precision weight measurement in commercial scales using full-bridge load cells with mV/V output. IC Role / Device Role / Timing Role: Signal-chain front-end ADC providing 14-bit resolution with built-in noise rejection. Use Value: Differential inputs and 60Hz rejection eliminate mains-induced noise in unshielded weigh platforms. |
Use Scenario: Modular DAQ card acquiring slow-varying environmental sensor data (temperature, humidity, pressure). IC Role / Device Role / Timing Role: Low-power, dual-channel ADC enabling multi-sensor polling with minimal µP overhead. Use Value: 4µA shutdown current extends battery life in portable or remote DAQ deployments. |
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 |
|---|---|---|---|
| ADS1115IDGSR | Single-supply (2.0–5.5V), I²C interface, internal 2.048V reference, 860SPS max, no auto-calibration | Requires external reference scaling for ±3V inputs; lacks 50/60Hz rejection; suited for low-cost embedded systems with I²C buses | Select when I²C interface and integrated reference simplify design, and ±3V input range can be accommodated via external gain stage |
| AD7705BRUZ | ±2.5V input range, 16-bit sigma-delta, SPI interface, 1mW typical power, no internal oscillator | Requires external clock and reference; higher power than MAX110BEWE+ in active mode; better noise performance at lower speeds | Select when ultra-low noise (<1µV RMS) at <10SPS is critical, and external clock/reference sourcing is acceptable |
Compared with ADS1115IDGSR and AD7705BRUZ, the MAX110BEWE+ uniquely combines ±5V dual-supply operation, built-in 50/60Hz rejection, auto-calibration, and zero-external-component operation - making it optimal for ruggedized industrial analog front-ends where supply stability and EMI immunity are non-negotiable.
Availability
MAX110BEWE+ is available at Aetrix Electronics and suitable for process control instrumentation, industrial panel meters, and weigh scale electronics requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX110BEWE+ 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 series was designed specifically for cost-sensitive, high-accuracy industrial data acquisition - delivering calibrated 14-bit performance with minimal external components and robust noise immunity in harsh environments.
FAQ
What is the operating temperature range for MAX110BEWE+?
The MAX110BEWE+ is specified for operation from 0°C to +70°C (Commercial grade). This is confirmed by the "MAX110BCWE" ordering code in the datasheet's Ordering Information table, where the 'B' suffix denotes 0°C to +70°C range and 'E' indicates plastic SO package. The device is not rated for extended industrial or automotive temperature ranges.
Does MAX110BEWE+ require external calibration components?
No. The MAX110BEWE+ uses internal auto-calibration circuitry to correct both offset and gain errors under microprocessor control. As stated in the General Description, it achieves 14-bit resolution "with no external components," and the Applications section explicitly lists "No External Components Required" as a key feature - eliminating trim pots, precision resistors, or external references.
How does the MAX110BEWE+ handle 50Hz and 60Hz line interference?
The MAX110BEWE+ achieves inherent 50Hz/60Hz rejection through its sigma-delta architecture and programmable oversampling clock. With 81,920 clock cycles per conversion at 1MHz XCLK (÷2 mode), the effective sampling period aligns to reject integer multiples of 50/60Hz - a feature explicitly listed under "Features" and validated in Typical Operating Characteristics plots showing <0.01% residual error at these frequencies.
Can MAX110BEWE+ operate with a single +5V supply?
No. The MAX110BEWE+ is a member of the MAX110 family, which requires dual ±5V supplies (VDD = +5V, VSS = −5V) as specified in the General Description and Absolute Maximum Ratings. The single-supply variant is the MAX111; attempting to power MAX110BEWE+ from only +5V will prevent proper analog input range operation and may damage the device due to violation of VSS requirements.
What is the function of the BUSY pin on MAX110BEWE+?
The BUSY pin on MAX110BEWE+ is an active-low, open-drain output that signals conversion status: it goes low at the start of each conversion and returns high upon completion. As documented in the Pin Description table and Figure 6 timing diagram, this pin allows µP firmware to poll or interrupt-driven synchronization - ensuring reliable data capture without fixed delay loops or race conditions.
MAX110BEWE+ 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:
- -
MAX110BEWE+ FAQ
1.How can I place an order for MAX110BEWE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX110BEWE+ 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 MAX110BEWE+ reliable?
The price and inventory of MAX110BEWE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX110BEWE+ is usually 5 days.
3.What payment methods are accepted for MAX110BEWE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX110BEWE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX110BEWE+?
MAX110BEWE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX110BEWE+ 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 MAX110BEWE+?
For technical support, including MAX110BEWE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX110BEWE+ requirements.
6.How does Aetrix verify that MAX110BEWE+ is sourced from the original manufacturer or authorized distributors?
All MAX110BEWE+ 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 MAX110BEWE+ meets industry standards.
7.What is the process for return or replacement of MAX110BEWE+?
All MAX110BEWE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX110BEWE+, 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 MAX110BEWE+ part is unused and in its original packaging.
Return procedure for MAX110BEWE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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