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Analog Devices Inc./Maxim Integrated MAX110ACWE+T
- Part No.:
- MAX110ACWE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX110ACWE+T.pdf
- Description:
- IC ADC 14BIT SIGMA-DELTA 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,425
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Product details
Overview
MAX110ACWE+T 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% INL, 550µA active supply current, and 4µA shutdown current, enabling high-resolution battery-powered data acquisition in panel meters and process control systems.
For engineers reviewing the MAX110ACWE+T datasheet, MAX110ACWE+T pinout, MAX110ACWE+T application, or MAX110ACWE+T equivalent, this page provides verified technical context, calibrated performance parameters, serial interface timing constraints, and validated alternative options for industrial sensor signal conditioning.
Technical Context
The MAX110ACWE+T implements a first-order sigma-delta modulator with internal voltage-to-current conversion, integrator, comparator, and 1-bit DAC feedback loop. Its 16-bit serial output includes sign (POL), overrange (OFL), and 14 data bits in two's-complement format.
It supports programmable conversion time via CONV1–CONV4 bits (10,240–102,400 clock cycles), oversampling clock division (÷1/÷2/÷4), and auto-calibration under µP control for offset and gain error correction. Reference inputs accept ±1.5V differential (VREF+ = 1.5V, VREF– = –1.5V) with 10pF input capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | ±14-bit + sign + overrange bit (16-bit serial output); enables 1:16,384 dynamic range for precision DC/low-frequency signals. |
| INL (Relative Accuracy) | ±0.03% FSR (typical, –VREF to +VREF); ensures <±2 LSB error across full input span for calibrated measurements. |
| Supply Current | 550µA (active, ±5V), 4µA (power-down); allows >1-year operation on coin-cell batteries in remote sensing nodes. |
| Differential Input Range | –3V to +3V (with ±5V supplies); matches industrial transducer outputs without external level-shifting. |
| Reference Input | ±1.5V differential (VREF+ = 1.5V, VREF– = –1.5V); sets full-scale range and enables 50Hz/60Hz rejection via oversampling. |
| Conversion Rate | Up to 50 conversions/sec (at minimum clock cycles); sufficient for slow-varying physical quantities (temperature, pressure, weight). |
| Serial Interface | SPI/QSPI/MICROWIRE-compatible (SCLK up to 2MHz); eliminates need for parallel bus routing and reduces µC pin count. |
Pinout & Package
MAX110ACWE+T is housed in a 16-pin Wide SO (SOIC-W) package with 0.3" body width and standard gull-wing leads. Pin functions are electrically identical to the 16-pin DIP/SO variants in the MAX110 family.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1+, IN1– | Differential Channel 1 Inputs | Accept –3V to +3V differential analog signals; common-mode range constrained to (VSS + 2.25V) to (VDD – 2.25V). |
| IN2+, IN2– | Differential Channel 2 Inputs | Second independent 2-channel input pair; shares same reference and conversion engine as IN1. |
| REF+, REF– | Differential Reference Inputs | Set full-scale range (VREF = VREF+ – VREF–); must be ±1.5V for specified accuracy and 50/60Hz rejection. |
| CS | Chip Select | Active-low enable for serial interface; rising edge triggers conversion if NO-OP = 1 in control word. |
| SCLK | Serial Clock Input | TTL/CMOS-compatible clock (DC–2MHz); controls data shift-in/out timing; falling edge clocks DOUT. |
| DIN | Serial Data Input | Loads 16-bit control word (NO-OP, CONV bits, CAL, PD, etc.) on SCLK rising edge. |
| DOUT | Serial Data Output | High-impedance when CS high; outputs 16-bit result (POL, OFL, D13–D0) MSB-first on SCLK falling edge. |
| BUSY | Conversion Status Output | Active-low open-drain signal; goes low at conversion start, returns high at completion. |
| VDD, VSS | Power Supplies | VDD = +5V ±5%, VSS = –5V ±5%; absolute max ratings: VDD to GND ≤ +6V, VSS to GND ≥ –6V. |
| RCSEL, XCLK | Oversampling Clock Control | RCSEL = VDD enables internal RC oscillator on XCLK; RCSEL = GND accepts external TTL/CMOS clock on XCLK. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-Calibration Mode | Offset and gain calibration executed under µP command-eliminates need for external trim pots or factory calibration steps. |
| No External Components Required | Full 14-bit performance achieved with only decoupling caps; no external op-amps, filters, or reference buffers needed. |
| 50Hz/60Hz Rejection | Integrated oversampling and digital filtering reject line-frequency interference without external notch filters. |
| Two Differential Input Channels | Independent IN1 and IN2 pairs share one ADC core-reduces BOM cost vs. dual standalone converters. |
| Low-Power Shutdown | 4µA quiescent current in power-down mode (PD = 1, PDX = 1)-enables wake-on-external-trigger architectures. |
Applications
| Process Control Monitoring | Weigh Scale Signal Conditioning |
|---|---|
|
Use Scenario: Continuous monitoring of 4–20mA loop sensors in PLC I/O modules with isolated analog front-ends. IC Role / Device Role / Timing Role: Precision DC-coupled ADC digitizing low-bandwidth industrial transducer outputs with ±3V range. Use Value: 0.03% INL and auto-calibration ensure long-term measurement stability without field recalibration. |
Use Scenario: High-accuracy load cell readout in commercial weighing terminals requiring sub-gram resolution. IC Role / Device Role / Timing Role: Dual-channel differential ADC acquiring bridge sensor outputs with common-mode noise rejection. Use Value: 50Hz/60Hz rejection and ±14-bit resolution enable stable readings in electrically noisy factory environments. |
| Panel Meter Front-End | Temperature Data Logger |
|
Use Scenario: Compact digital panel meter displaying real-time voltage/current values with LED or LCD output. IC Role / Device Role / Timing Role: Low-power serial ADC interfacing directly to 8-bit microcontroller via SPI with minimal PCB footprint. Use Value: 550µA supply current and SOIC-W package allow battery operation and space-constrained designs. |
Use Scenario: Remote environmental sensor node logging thermistor or RTD measurements over weeks on AA batteries. IC Role / Device Role / Timing Role: Battery-optimized ADC entering 4µA shutdown between periodic temperature sampling intervals. Use Value: Ultra-low shutdown current extends operational life while maintaining calibration state across wake cycles. |
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 |
|---|---|---|---|
| ADS1115IRUGT | Single-supply (2.0–5.5V), 16-bit resolution, I²C interface, internal 2.048V reference; no ±5V support. | Best for low-voltage embedded systems with I²C buses; unsuitable for bipolar ±3V input or ±5V rails. | Select ADS1115IRUGT when replacing legacy I²C-based designs or when supply voltage <4.5V. |
| MAX11200EEE+ | 24-bit delta-sigma ADC, ±5V supply capable, SPI interface, 1.8–5.25V logic, 330µA typical current. | Higher resolution for metrology-grade applications; larger 16-pin QSOP package; requires external reference for full spec. | Select MAX11200EEE+ when system demands <1ppm INL or needs enhanced noise immunity beyond 14-bit. |
Compared with MAX110ACWE+T, ADS1115IRUGT offers higher integration and I²C simplicity but lacks bipolar input support and ±5V operation; MAX11200EEE+ delivers superior resolution and lower noise at the cost of increased complexity and power budget.
Availability
MAX110ACWE+T is available at Aetrix Electronics and suitable for process control monitoring, weigh scale signal conditioning, and panel meter front-end applications requiring stable component supply and long-lifecycle availability.
Supply support for MAX110ACWE+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) designs precision analog, mixed-signal, and power management ICs for industrial, medical, and communications markets.
The MAX110 family targets cost-sensitive, high-resolution data acquisition where auto-calibration, low power, and serial interface simplicity are critical-especially in battery-powered and space-constrained instrumentation.
FAQ
What is the operating temperature range for MAX110ACWE+T?
The MAX110ACWE+T is rated for 0°C to +70°C ambient operation, as indicated by the 'C' grade suffix in its ordering code. This commercial-grade temperature range aligns with its use in indoor industrial equipment, panel meters, and non-extreme-environment data loggers. The device maintains specified INL, offset error, and conversion rate performance across this full range when powered from ±5V supplies and using the recommended ±1.5V reference configuration.
Does MAX110ACWE+T require external calibration components?
No, the MAX110ACWE+T does not require external calibration components. Its internal auto-calibration circuitry corrects both offset and gain errors under microprocessor control using only the on-chip reference and logic-no external trimpots, laser trimming, or calibration DACs are needed. This feature is explicitly confirmed in the General Description and Electrical Characteristics sections of the datasheet, and is a defining characteristic of the MAX110 family.
Can MAX110ACWE+T interface directly with an Arduino or STM32 MCU?
Yes, MAX110ACWE+T can interface directly with Arduino and STM32 MCUs via SPI. Its SCLK supports DC–2MHz, CS is active-low, and DOUT/DIN are standard CMOS-level signals compatible with 3.3V or 5V GPIO. BUSY provides ready signaling, and the control word structure (NO-OP, CONV bits) allows full configuration from firmware. No level-shifting or protocol translation is required for basic single-shot or continuous conversion modes.
What is the maximum differential input voltage the MAX110ACWE+T can safely handle?
The MAX110ACWE+T safely accepts differential input voltages from –3V to +3V when operated from ±5V supplies, as stated in the General Description and Absolute Maximum Ratings. However, the absolute voltage at any analog input pin (IN1+, IN1–, IN2+, IN2–) must remain within (VSS + 2.25V) to (VDD – 2.25V), i.e., –2.75V to +2.75V. Exceeding these limits risks latch-up or permanent damage, even if the differential voltage stays within ±3V.
How does the overrange bit (OFL) function in MAX110ACWE+T?
The overrange bit (OFL) in MAX110ACWE+T is set when the input voltage exceeds ±VREF (±1.5V). It appears as the second bit shifted out after the sign bit (POL) in the 16-bit serial output. OFL operates correctly only when VREF+ and VREF– remain within their specified absolute voltage ranges (VREF+ ≤ VDD – 0.5V, VREF– ≥ VSS + 0.5V); if reference voltages drift outside these bounds, OFL may misfire. The converter continues linear operation up to ~1.2× VREF before saturation.
MAX110ACWE+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:
- 0°C ~ 70°C
- Supplier Device Package:
- 16-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX110ACWE+T FAQ
1.How can I place an order for MAX110ACWE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX110ACWE+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 MAX110ACWE+T reliable?
The price and inventory of MAX110ACWE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX110ACWE+T is usually 5 days.
3.What payment methods are accepted for MAX110ACWE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX110ACWE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX110ACWE+T?
MAX110ACWE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX110ACWE+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 MAX110ACWE+T?
For technical support, including MAX110ACWE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX110ACWE+T requirements.
6.How does Aetrix verify that MAX110ACWE+T is sourced from the original manufacturer or authorized distributors?
All MAX110ACWE+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 MAX110ACWE+T meets industry standards.
7.What is the process for return or replacement of MAX110ACWE+T?
All MAX110ACWE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX110ACWE+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 MAX110ACWE+T part is unused and in its original packaging.
Return procedure for MAX110ACWE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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