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Analog Devices Inc./Maxim Integrated MAX110BCWE+
- Part No.:
- MAX110BCWE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX110BCWE+.pdf
- Description:
- IC ADC 14BIT SIGMA-DELTA 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:210
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Product details
Overview
MAX110BCWE+ from Maxim Integrated is a ±14-bit, 2-channel sigma-delta analog-to-digital converter (ADC) operating from ±5V supplies with differential input range of –3V to +3V. It delivers 0.03% linearity, 550µA active supply current, and 4µA shutdown current, enabling high-resolution measurement in battery-powered process control and panel meter systems.
For engineers reviewing the MAX110BCWE+ datasheet, MAX110BCWE+ pinout, MAX110BCWE+ application, or MAX110BCWE+ equivalent, this device supports SPI/QSPI/MICROWIRE serial interfaces, features auto-calibration for offset/gain correction, and requires no external components - critical for low-noise, space-constrained industrial sensing designs.
Technical Context
The MAX110BCWE+ implements a first-order sigma-delta modulator with integrated voltage-to-current converter, integrator, comparator, and 1-bit DAC to achieve 14-bit resolution plus sign and overrange bits. Its oversampling clock (fOSC) is programmable via internal RC oscillator or external source, with division-by-1/2/4 modes.
Conversion timing is controlled by CONV1–CONV4 bits, supporting up to 50 conversions/sec (204.8 ms @ 81,920 clocks/conv). Input signals are digitized in two's-complement format, with POL (sign), OFL (overrange), and 14 data bits shifted MSB-first on DOUT synchronized to SCLK falling edge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit + sign + overrange bit - delivers 32,768 distinct codes across ±VREF range with overflow detection |
| Linearity (INL) | ±0.03% FSR - ensures accurate representation of linear sensor outputs without post-processing correction |
| Supply Current | 550 µA (active), 4 µA (power-down) - enables multi-year operation on coin-cell batteries in remote sensors |
| Differential Input Range | –3 V to +3 V - matches industrial transducer outputs (e.g., 4–20 mA loop receivers with 250 Ω shunt) |
| Reference Input Range | VREF+ = 1.5 V, VREF– = –1.5 V (±3 V total) - sets full-scale span and defines LSB = 183 µV |
| Serial Interface | SPI/QSPI/MICROWIRE-compatible - eliminates need for level-shifting or protocol translation in µC-based DAQ systems |
| Conversion Rate | Up to 50 conversions/sec - sufficient for slow-varying physical parameters (temperature, pressure, weight) |
Pinout & Package
MAX110BCWE+ is housed in a 16-pin Wide SO (SOIC-W) package with standard 0.3-inch body width and 1.27 mm pitch. Pin functions are electrically identical to the 16-pin DIP variant but optimized for surface-mount assembly and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1+, IN1– | Differential Channel 1 Inputs | Accepts bipolar analog signal; common-mode range limited to (VSS + 2.25 V) to (VDD – 2.25 V) |
| IN2+, IN2– | Differential Channel 2 Inputs | Second independent measurement path; shares same reference and conversion engine as IN1 |
| REF+, REF– | Differential Reference Inputs | Defines full-scale range; VREF = VREF+ – VREF– must be ≤3 V; internal biasing requires symmetric ±1.5 V |
| CS | Chip Select | Active-low enable for serial interface; rising edge triggers conversion if NO-OP = 1 in prior control word |
| SCLK | Serial Clock | TTL/CMOS-compatible input; controls data shift-in/out timing; DC to 2 MHz operation supported |
| DIN | Serial Data Input | Loads 16-bit control word (NO-OP, CHS, CAL, PD, etc.) on SCLK rising edge |
| DOUT | Serial Data Output | Outputs 16-bit result (POL/OFL/D13–D0) on SCLK falling edge; high-impedance when CS = high |
| BUSY | Conversion Status Flag | Active-low open-drain output; asserts low at conversion start, releases high upon completion |
| VDD, VSS | Power Supplies | +5 V and –5 V rails; absolute max ratings require VDD ≤ +6 V, VSS ≥ –6 V |
| RCSEL, XCLK | Oversampling Clock Control | RCSEL = VDD selects internal RC oscillator; RCSEL = GND enables external clock on XCLK |
Key Features
| Feature | Design Value |
|---|---|
| Auto-calibration under µP control | Enables real-time offset and gain correction without manual trim pots or factory calibration steps |
| No external components required | Eliminates external op-amps, filters, or reference buffers - reduces BOM count and PCB area by >30% |
| 50 Hz / 60 Hz rejection | Integrated digital filtering suppresses mains-borne noise in industrial environments without added software overhead |
| Two differential input channels | Allows simultaneous monitoring of dual sensors (e.g., load cell + temperature compensation) using single ADC |
| Low power shutdown mode | 4 µA quiescent current enables wake-on-event architectures where µC initiates conversion only when needed |
Applications
| Process Control Loop Monitoring | Weigh Scale Signal Conditioning |
|---|---|
|
Use Scenario: Continuous acquisition of 4–20 mA current-loop signals from pressure/flow transmitters in PLC I/O modules. IC Role / Device Role / Timing Role: Primary ADC converting analog field signals into digital values for closed-loop PID computation. Use Value: ±0.03% INL and 50/60 Hz rejection ensure stable control output without oscillation due to electrical noise. |
Use Scenario: High-precision weight measurement in platform scales using strain-gauge bridges with mV-level outputs. IC Role / Device Role / Timing Role: Front-end digitizer providing 14-bit resolution with built-in reference and calibration support. Use Value: Differential inputs reject common-mode noise from mechanical vibration; auto-calibration maintains accuracy across temperature swings. |
| Panel Meter Digital Display | Temperature Data Logger |
|
Use Scenario: Compact front-panel instrumentation displaying real-time analog process variables (voltage, current, resistance). IC Role / Device Role / Timing Role: Standalone ADC interfacing directly to microcontroller display driver via SPI. Use Value: Serial interface saves µC GPIO pins; low 550 µA supply current extends battery life in portable handheld meters. |
Use Scenario: Long-term environmental monitoring using thermistor or RTD sensors in unattended outdoor deployments. IC Role / Device Role / Timing Role: Low-power ADC sampling sensor outputs every 10 seconds and entering deep sleep between conversions. Use Value: 4 µA shutdown current allows multi-year operation on AA batteries; internal reference eliminates external precision voltage source. |
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 (2.0–5.5 V), 16-bit resolution, I²C interface, internal PGA (up to 16×), no auto-calibration | Requires external reference for best accuracy; better suited for low-voltage embedded systems than industrial ±5 V rails | Select when I²C bus availability and programmable gain outweigh need for bipolar supply and auto-calibration |
| AD7705BRUZ | ±2.5 V reference, 16-bit sigma-delta, SPI interface, 1 mW typical power, no internal oscillator | Requires external clock source; lower linearity (±0.003% FSR) but higher resolution; lacks overrange bit | Select when ultra-low drift and metrology-grade accuracy are prioritized over self-contained operation and overrange flag |
Compared with ADS1115IDGSR and AD7705BRUZ, the MAX110BCWE+ uniquely combines ±5 V dual-supply operation, integrated auto-calibration, and overrange detection - making it optimal for legacy industrial systems requiring minimal design change and guaranteed bipolar signal handling.
Availability
MAX110BCWE+ is available at Aetrix Electronics and suitable for process control, weigh scale, and panel meter applications requiring stable component supply, long-lifecycle support, and guaranteed traceability.
Supply support for MAX110BCWE+ 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 cost-sensitive, high-accuracy industrial data acquisition where ±14-bit resolution, low power, and minimal external components are essential - targeting applications like PLC analog input modules and portable test equipment.
FAQ
What is the operating temperature range for the MAX110BCWE+?
The MAX110BCWE+ is specified for operation from 0°C to +70°C. This commercial-grade temperature range aligns with its use in indoor industrial equipment, benchtop instruments, and non-extreme-environment data loggers. The 'B' grade denotes ±0.03% INL performance across this full range, verified per Maxim's production test flow.
Does the MAX110BCWE+ require external calibration components?
No, the MAX110BCWE+ does not require external calibration components. Its internal auto-calibration circuitry corrects both offset and gain errors under microprocessor control using only the device's own reference and analog inputs - eliminating trim pots, laser trimming, or external DACs required by many competing ADCs.
Can the MAX110BCWE+ interface directly with an Arduino or STM32 microcontroller?
Yes, the MAX110BCWE+ interfaces directly with Arduino and STM32 microcontrollers via its SPI-compatible serial interface. It accepts standard 3.3 V or 5 V logic levels on CS, SCLK, DIN, and DOUT, and operates with common SPI modes (CPOL = 0, CPHA = 0). BUSY can be polled or used as an interrupt source to signal conversion completion.
What is the function of the OFL (overrange) bit in the MAX110BCWE+ output word?
The OFL bit in the MAX110BCWE+ output word indicates when the differential input voltage exceeds ±VREF. It is asserted before hard saturation occurs (typically at ±1.2 × VREF), allowing firmware to detect out-of-range conditions early and initiate corrective action - such as range switching or alarm generation - without losing measurement validity.
How does the MAX110BCWE+ achieve 50 Hz and 60 Hz rejection?
The MAX110BCWE+ achieves 50 Hz and 60 Hz rejection through inherent oversampling and digital filtering in its sigma-delta architecture. With 81,920 clock cycles per conversion and precise timing alignment, the modulator integrates noise over integer multiples of AC line periods, effectively canceling interference without requiring external notch filters or software averaging.
MAX110BCWE+ 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:
- 0°C ~ 70°C
- Supplier Device Package:
- 16-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX110BCWE+ FAQ
1.How can I place an order for MAX110BCWE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX110BCWE+ 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 MAX110BCWE+ reliable?
The price and inventory of MAX110BCWE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX110BCWE+ is usually 5 days.
3.What payment methods are accepted for MAX110BCWE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX110BCWE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX110BCWE+?
MAX110BCWE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX110BCWE+ 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 MAX110BCWE+?
For technical support, including MAX110BCWE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX110BCWE+ requirements.
6.How does Aetrix verify that MAX110BCWE+ is sourced from the original manufacturer or authorized distributors?
All MAX110BCWE+ 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 MAX110BCWE+ meets industry standards.
7.What is the process for return or replacement of MAX110BCWE+?
All MAX110BCWE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX110BCWE+, 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 MAX110BCWE+ part is unused and in its original packaging.
Return procedure for MAX110BCWE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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