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Analog Devices Inc./Maxim Integrated MAX110ACWE+
- Part No.:
- MAX110ACWE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX110ACWE+.pdf
- Description:
- IC ADC 14BIT SIGMA-DELTA 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,340
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Product details
Overview
MAX110ACWE+ from Maxim Integrated is a ±14-bit, 2-channel serial analog-to-digital converter (ADC) operating from dual ±5V supplies, delivering 0.03% INL, 550µA active supply current, and 50Hz/60Hz rejection for high-accuracy battery-powered measurement systems such as panel meters and weigh scales.
For engineers reviewing the MAX110ACWE+ datasheet, MAX110ACWE+ pinout, MAX110ACWE+ application, or MAX110ACWE+ equivalent, this page provides verified technical context, calibrated performance specs, SO-16 package details, real-world use cases, and validated alternative options - all grounded in the official MAX110/MAX111 datasheet Rev 5 (11/98).
Technical Context
The MAX110ACWE+ implements a first-order sigma-delta architecture with internal auto-calibration for offset and gain error correction under µP control. It accepts differential analog inputs from –3V to +3V using ±1.5V reference (VREF+ = +1.5V, VREF– = –1.5V), and outputs 16-bit serial data (sign bit + 14 data bits + overrange bit) in two's-complement format.
Its serial interface supports SPI™, QSPI™, and MICROWIRE™ protocols via CS, SCLK, DIN, and DOUT pins. Conversion timing is programmable (10,240–102,400 clock cycles), with synchronous conversion time up to 204.8 ms at 500 kHz oversampling clock, and built-in 50/60 Hz notch rejection achieved through oversampling and digital filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | ±14-bit + sign + overrange (16-bit serial output); enables precise measurement of bipolar signals without external amplification |
| INL (Integral Nonlinearity) | ±0.03% FSR (max); ensures accurate end-point linearity across full input range for calibration-critical applications |
| Supply Current (Active) | 550 µA at ±5V; allows >1-year operation on coin-cell batteries in remote sensor nodes |
| Supply Current (Power-Down) | 4 µA; reduces system standby power by >99% while retaining configuration state |
| Differential Input Range | –3V to +3V (with ±1.5V reference); matches industrial transducer outputs without level-shifting circuitry |
| 50/60 Hz Rejection | Integrated digital filtering rejects mains interference without external notch filters or software averaging |
| Reference Input | Differential ±1.5V (VREF+ = +1.5V, VREF– = –1.5V); supports stable ratiometric or absolute measurements |
Pinout & Package
MAX110ACWE+ is housed in a 16-pin Wide SO (SOIC-W) package, 7.5 mm × 10.3 mm body, 1.27 mm pitch, RoHS-compliant, with exposed pad option not applicable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1+, IN1– | Differential Channel 1 Input | Accepts primary analog signal (e.g., load cell bridge output); common-mode range limited to VSS + 2.25V to VDD – 2.25V |
| IN2+, IN2– | Differential Channel 2 Input | Enables dual-sensor monitoring (e.g., temperature + pressure) with shared reference and timing |
| REF+, REF– | Differential Reference Inputs | Defines full-scale range (±VREF); must be driven by low-impedance source (≤10 pF capacitance) |
| VDD, VSS | Positive/Negative Supply Rails | Requires ±5V ±5%; VSS = –5V enables true bipolar input handling without level shifters |
| CS, SCLK, DIN, DOUT | Serial Interface Control/Data | Full SPI/QSPI/MICROWIRE compatibility; DOUT is 3-state; CS must remain high during conversion |
| BUSY | Conversion Status Output | Active-low open-drain signal; used to trigger µP interrupt or polling loop for deterministic timing |
| RCSEL, XCLK | Oversampling Clock Control | RCSEL selects internal RC oscillator (VDD) or external clock (GND); XCLK drives sigma-delta modulator at 0.25–1.25 MHz |
Key Features
| Feature | Design Value |
|---|---|
| Auto-Calibration Mode | On-command offset/gain correction eliminates need for factory-trimmed resistors or manual calibration routines |
| No External Components Required | Complete ADC function-including reference buffer, integrator, and DAC-integrated; reduces BOM count and PCB area |
| Two Differential Input Channels | Hardware-multiplexed dual inputs enable time-synchronized sampling of two sensors without external MUX or timing skew |
| 50Hz/60Hz Rejection | Fixed digital filter suppresses AC line noise without firmware overhead or additional sampling cycles |
| Low-Power Power-Down Mode | 4 µA shutdown current with retention of register state allows rapid wake-up (<100 µs) for burst-mode sensing |
Applications
| Panel Meters | Weigh Scales |
|---|---|
Use Scenario: Digital front-end for benchtop or industrial panel meters measuring voltage, current, or resistance with 0.01% display resolution. IC Role / Device Role / Timing Role: Primary ADC converting analog meter inputs to serial digital data for microcontroller display processing and scaling. Use Value: ±0.03% INL and auto-calibration ensure NIST-traceable accuracy without periodic field recalibration. |
Use Scenario: High-resolution weight acquisition in platform scales and hopper load cells where ±10g repeatability is required at 10kg full scale. IC Role / Device Role / Timing Role: Dual-channel differential ADC digitizing Wheatstone bridge outputs from primary and reference strain gauges. Use Value: Built-in 50/60 Hz rejection eliminates mains-induced drift in unshielded factory environments. |
| Process Control Sensors | Temperature Measurement Systems |
Use Scenario: Analog input module in PLC I/O racks acquiring 4–20 mA loop signals or thermocouple outputs in chemical plants. IC Role / Device Role / Timing Role: Isolated ADC channel interfacing via optocouplers to handle ground-loop-free signal conditioning. Use Value: Low 550 µA supply current enables dense channel packing without thermal derating on backplanes. |
Use Scenario: Precision RTD or thermistor readout in medical diagnostic equipment requiring <0.1°C accuracy over 0–100°C. IC Role / Device Role / Timing Role: Ratiometric ADC using internal reference to reject excitation current drift in 4-wire RTD circuits. Use Value: ±14-bit resolution resolves sub-LSB changes in platinum RTD resistance, enabling direct linearization in firmware. |
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 |
|---|---|---|---|
| ADS1115IDGSR | Single-supply (+2.0V to +5.5V), 16-bit delta-sigma ADC; no dual-supply support; integrated PGA (up to 16×); I²C interface only | Suitable for low-voltage embedded systems but cannot replace MAX110ACWE+ in ±5V bipolar signal chains without level-shifting | Select when I²C bus availability and programmable gain outweigh need for dual-supply operation and SPI compatibility |
| AD7714BRUZ | 24-bit sigma-delta ADC; ±5V supply capable; SPI-compatible; higher power (1.2 mA active); includes on-chip reference and excitation current sources | Better resolution and integrated features for high-end weigh scales, but over-spec'd and costlier for 14-bit panel meter use | Select when 24-bit resolution, on-chip reference stability, or sensor excitation are required - not for cost-sensitive 14-bit applications |
Compared with ADS1115IDGSR and AD7714BRUZ, the MAX110ACWE+ uniquely balances ±14-bit accuracy, dual-supply operation, SPI/QSPI/MICROWIRE flexibility, and ultra-low 550 µA active current - making it optimal for legacy industrial designs requiring proven bipolar signal integrity without architectural redesign.
Availability
MAX110ACWE+ is available at Aetrix Electronics and suitable for panel meters, weigh scales, and process control systems requiring stable component supply, long-term obsolescence management, and traceable sourcing for industrial OEM programs.
Supply support for MAX110ACWE+ 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 precision analog, mixed-signal, and power management ICs for industrial, medical, and communications applications.
The MAX110 product line was designed for high-resolution, low-power, dual-channel data acquisition in space-constrained, battery-operated, or electrically noisy environments - emphasizing ease of integration and calibration-free operation.
FAQ
What is the operating temperature range for MAX110ACWE+?
The MAX110ACWE+ is specified for 0°C to +70°C ambient operation, as indicated by the 'C' grade suffix in its ordering code. This commercial-grade rating suits indoor instrumentation, lab equipment, and non-extreme industrial enclosures. The device's ±0.03% INL and 550 µA supply current are guaranteed across this full range per the MAX110/MAX111 datasheet Rev 5.
Does MAX110ACWE+ require external calibration components?
No, the MAX110ACWE+ does not require external calibration components. Its internal auto-calibration circuitry corrects both offset and gain errors under microprocessor control, eliminating the need for trim pots, laser-trimmed resistors, or external reference buffers. This is confirmed in the General Description and Electrical Characteristics sections of the official datasheet.
Can MAX110ACWE+ interface directly with an Arduino or STM32 MCU?
Yes, the MAX110ACWE+ supports standard SPI, QSPI, and MICROWIRE protocols and is fully compatible with Arduino (via SPI library) and STM32 (via HAL_SPI or direct register access). Its 0–5V logic-level I/O, 2 MHz max SCLK, and BUSY pin for interrupt-driven reads simplify integration - no level shifting or protocol translation is needed for 3.3V or 5V microcontrollers.
What is the maximum differential input voltage range supported by MAX110ACWE+?
The MAX110ACWE+ supports a differential input voltage range of –3V to +3V when using the recommended ±1.5V reference (VREF+ = +1.5V, VREF– = –1.5V). Absolute pin voltages must stay within VSS + 2.25V to VDD – 2.25V (i.e., –2.75V to +2.75V at ±5V supplies), as specified in the Absolute Maximum Ratings table.
How does the power-down mode work on MAX110ACWE+?
The MAX110ACWE+ enters 4 µA power-down mode when both PD (bit 0) and PDX (bit 1) in the control word are set high, or when PD = 1 and RCSEL = GND. In this state, analog circuitry and the RC oscillator are disabled, but register contents are retained. Wake-up is immediate upon exiting power-down, with BUSY signaling readiness - verified in the Power-Down Mode section of the datasheet.
MAX110ACWE+ 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:
- -
MAX110ACWE+ FAQ
1.How can I place an order for MAX110ACWE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX110ACWE+ 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 MAX110ACWE+ reliable?
The price and inventory of MAX110ACWE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX110ACWE+ is usually 5 days.
3.What payment methods are accepted for MAX110ACWE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX110ACWE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX110ACWE+?
MAX110ACWE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX110ACWE+ 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 MAX110ACWE+?
For technical support, including MAX110ACWE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX110ACWE+ requirements.
6.How does Aetrix verify that MAX110ACWE+ is sourced from the original manufacturer or authorized distributors?
All MAX110ACWE+ 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 MAX110ACWE+ meets industry standards.
7.What is the process for return or replacement of MAX110ACWE+?
All MAX110ACWE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX110ACWE+, 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 MAX110ACWE+ part is unused and in its original packaging.
Return procedure for MAX110ACWE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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