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Analog Devices Inc./Maxim Integrated MAX110AEPE+
- Part No.:
- MAX110AEPE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- -
- Datasheet:
-
MAX110AEPE+.pdf
- Description:
- IC ADC SERIAL 2CH 14BIT 16-DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,735
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Product details
Overview
MAX110AEPE+ from Maxim Integrated is a ±14-bit, 2-channel differential serial ADC with internal auto-calibration, operating from ±5V supplies and delivering 0.03% linearity over -3V to +3V input range. It consumes only 550µA active current and 4µA in power-down mode, and supports SPI/QSPI/MICROWIRE interfaces for microcontroller integration in precision industrial sensing.
For engineers reviewing the MAX110AEPE+ datasheet, MAX110AEPE+ pinout, MAX110AEPE+ application, or MAX110AEPE+ equivalent, this device is selected for high-resolution, low-power, battery-operated data acquisition where ±14-bit resolution with sign/overrange bits, differential input rejection, and 50Hz/60Hz noise immunity are required.
Technical Context
The MAX110AEPE+ implements a first-order sigma-delta architecture with integrated voltage-to-current converter, integrator, comparator, and 1-bit DAC to achieve 14-bit resolution plus sign and overrange bits. Its conversion output is twos-complement serial data (POL/OFL/D13–D0), clocked out on SCLK falling edge with BUSY signaling completion.
It supports dual differential analog inputs (IN1±, IN2±), programmable conversion time via CONV1–CONV4 bits, and selectable oversampling clock division (÷1/÷2/÷4) from either internal RC oscillator (RCSEL = VDD) or external TTL/CMOS source (RCSEL = GND). Reference inputs (REF+, REF−) define ±VREF full-scale range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit + sign + overrange bit (16-bit serial output); enables detection of polarity and saturation beyond ±VREF |
| Linearity (INL) | ±0.03% FSR (max); ensures accurate measurement across full ±3V input span without external trimming |
| Supply Current | 550µA typical (active), 4µA (power-down); supports multi-year battery life in remote sensor nodes |
| Input Range | Differential ±3V (with ±5V supplies); accommodates industrial transducer outputs without signal conditioning |
| Conversion Rate | Up to 50 conversions/sec (at 10,240 clocks/conv); balances speed and noise rejection for low-frequency signals |
| Power Supply Rejection | 30 ppm/V (typical); maintains accuracy despite ±5% VDD/VSS variation in unregulated systems |
| 50/60Hz Rejection | Integrated digital filtering rejects mains interference without external notch filters |
Pinout & Package
MAX110AEPE+ is housed in a 16-pin plastic DIP package (0.300" wide), compatible with through-hole prototyping and industrial PCB layouts requiring mechanical robustness and thermal stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN1+) | Channel 1 positive analog input | Differential input pair for first sensor channel; referenced to IN1−; accepts −3V to +3V relative to VSS/VDD rails |
| 2 (REF−) | Negative reference input | Sets lower bound of full-scale range; must be ≤ VSS + 2.25V and ≥ VSS − 0.3V per absolute ratings |
| 3 (REF+) | Positive reference input | Sets upper bound of full-scale range; must be ≤ VDD − 2.25V and ≥ VSS + 0.3V |
| 4 (VDD) | +5V supply input | Connects to +4.75V to +5.25V regulated supply; powers analog and digital circuitry |
| 5 (RCSEL) | Oscillator mode select | Logic high enables internal RC oscillator; logic low selects external XCLK source |
| 6 (XCLK) | Oversampling clock I/O | Drives internal sigma-delta modulator; accepts 0.25–1.25MHz TTL/CMOS clock or outputs RC oscillator signal |
| 7 (SCLK) | Serial interface clock | DC to 2MHz static clock for DIN/DOUT data transfer; rising edge latches DIN, falling edge clocks DOUT |
| 8 (DIN) | Serial control word input | 16-bit command register load (NO-OP, CONV, CAL, PD, etc.); enables configuration and conversion start |
| 9 (DOUT) | Serial data output | High-impedance when CS high; outputs POL/OFL/D13–D0 on SCLK falling edge during CS low |
| 10 (BUSY) | Conversion status flag | Active-low open-drain output; asserts low at conversion start, releases high upon result availability |
| 11 (IN2+) | Channel 2 positive analog input | Second differential input pair; shares same reference and timing as IN1±; supports multiplexed dual-sensor readout |
| 12 (IN1−) | Channel 1 negative analog input | Completes first differential pair; common-mode voltage must stay within VSS+2.25V to VDD−2.25V |
| 13 (IN2−) | Channel 2 negative analog input | Completes second differential pair; enables simultaneous or alternating sampling of two isolated signals |
| 14 (VSS) | −5V supply input | Connects to −4.75V to −5.25V regulated supply; powers analog core and reference buffer |
| 15 (GND) | Digital ground | Separate AGND connection not present; all grounds tied internally-requires star grounding for best noise performance |
| 16 (CS) | Chip-select input | Active-low enable for serial interface; must remain high during conversion to avoid data corruption |
Key Features
| Feature | Design Value |
|---|---|
| Auto-calibration under µP control | Enables offset and gain correction without external trim pots or calibration fixtures-reduces BOM and field recalibration cost |
| No external components required | Eliminates need for external reference, clock, or anti-aliasing filters-reduces board area and design validation effort |
| 50Hz/60Hz rejection | On-chip digital filtering suppresses mains-borne noise in weigh scales and panel meters without software overhead |
| Two differential input channels | Supports independent or synchronized sampling of two sensors (e.g., load cell + temperature) with shared reference and timing |
| Low-power shutdown mode | 4µA quiescent current extends battery life in intermittent-read applications like environmental monitoring loggers |
Applications
| Process Control | Weigh Scales |
|---|---|
|
Use Scenario: Monitoring pressure, flow, and level transducers in PLC-based industrial automation systems. IC Role / Device Role / Timing Role: Precision analog front-end ADC converting 4–20mA loop outputs or bridge sensor mV signals into digital values for PID control. Use Value: ±0.03% linearity and 50Hz rejection ensure stable closed-loop operation in electrically noisy factory environments. |
Use Scenario: High-accuracy weight measurement in platform scales and hopper load cells. IC Role / Device Role / Timing Role: Differential ADC digitizing millivolt-level outputs from strain-gauge bridges with built-in noise immunity. Use Value: Auto-calibration compensates for thermal drift in load cells, maintaining ±0.01% repeatability over temperature. |
| Panel Meters | Data-Acquisition Systems |
|
Use Scenario: Digital front panels for HVAC controllers, power analyzers, and test equipment displays. IC Role / Device Role / Timing Role: Serial ADC interfacing directly to microcontroller SPI bus for real-time analog display updates. Use Value: 16-pin DIP package and SPI compatibility simplify layout and firmware integration-no glue logic required. |
Use Scenario: Modular DAQ modules for lab instrumentation and field-deployed environmental sensors. IC Role / Device Role / Timing Role: Low-power, high-resolution ADC enabling multi-channel synchronous sampling with minimal µC resource usage. Use Value: 4µA shutdown current allows duty-cycled operation-extending battery life to >5 years in wireless sensor nodes. |
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 (2.0–5.5V), I²C interface, 16-bit resolution, no internal reference; requires external VREF or uses internal 2.048V reference | Better suited for low-voltage, space-constrained designs with I²C buses; lacks ±5V dual-supply support and 50Hz rejection | Select when system uses I²C and operates below 3.3V; avoid if ±5V analog signal conditioning or mains noise immunity is required |
| AD7730BRUZ | 24-bit sigma-delta ADC, ±5V supplies, SPI interface, integrated PGA (1–128×), but higher power (1.2mA active) | Targeted at ultra-high-precision weigh scales and medical sensors needing >16-bit ENOB and programmable gain | Choose for applications demanding <10ppm linearity or variable gain; not cost-effective for standard ±14-bit industrial DAQ |
Compared with ADS1115IDGSR and AD7730BRUZ, the MAX110AEPE+ delivers optimal balance of ±14-bit accuracy, 50Hz rejection, dual-supply operation, and sub-1mA power in a legacy-compatible DIP package-making it ideal for retrofitting and industrial control upgrades where SPI interface and ±5V rails are already established.
Availability
MAX110AEPE+ is available at Aetrix Electronics and suitable for process control, weigh scales, and panel meters requiring stable component supply across extended product lifecycles.
Supply support for MAX110AEPE+ 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, automotive, and communications applications.
The MAX110 family was engineered for high-resolution, low-power, serial-output data acquisition in harsh environments-emphasizing self-calibration, noise immunity, and minimal external component count.
FAQ
What is the operating temperature range for MAX110AEPE+?
The MAX110AEPE+ is rated for 0°C to +70°C ambient operation, matching the 'A' grade specification in Maxim's ordering nomenclature. This range supports commercial and light-industrial applications where ambient conditions remain within standard office or controlled cabinet environments. The device maintains its ±0.03% linearity and 550µA supply current specifications across this full range, as verified in the MAX110 electrical characteristics tables.
Does MAX110AEPE+ require an external reference voltage?
No-MAX110AEPE+ accepts externally applied reference voltages at REF+ and REF− pins, but does not include an internal reference. It relies on user-provided precision references (e.g., REF5025 or LM4040) to set full-scale range. The device supports differential reference inputs up to ±3V (VREF+ − VREF−), and absolute pin voltages must stay within VSS + 2.25V to VDD − 2.25V. No internal reference is generated or used by MAX110AEPE+.
Can MAX110AEPE+ interface directly with an Arduino or STM32 SPI bus?
Yes-MAX110AEPE+ is fully compatible with standard SPI, QSPI, and MICROWIRE protocols (CPOL = 0, CPHA = 0). Its SCLK accepts DC to 2MHz, DOUT drives on falling edge, and DIN latches on rising edge-matching Arduino hardware SPI and most STM32 SPI peripherals. BUSY can be polled or used as interrupt input. No level-shifting is needed for 5V-tolerant MCUs; for 3.3V MCUs, verify SCLK/DIN high-level thresholds meet MAX110AEPE+'s VIH ≥ 2.4V spec.
How does the auto-calibration function work in MAX110AEPE+?
MAX110AEPE+ supports two-point auto-calibration (offset null and gain adjust) initiated via control register bits (CAL and NUL). When triggered, the ADC internally shorts inputs to reference levels and measures error, then stores correction coefficients in on-chip registers. Calibration is µP-controlled and non-disruptive-no external connections or manual adjustments are required. Full calibration restores ±0.03% linearity after thermal drift or long-term aging.
What is the maximum analog input voltage allowed at IN1+ or IN2+ pins of MAX110AEPE+?
Per Absolute Maximum Ratings, the voltage at any analog input pin (IN1+, IN1−, IN2+, IN2−) must remain between VSS + 2.25V and VDD − 2.25V. With ±5V supplies (VDD = +5V, VSS = −5V), this defines a safe operating range of −2.75V to +2.75V. The specified differential input range is ±3V (i.e., INx+ − INx− ≤ ±3V), but absolute pin voltages must respect the rail limits to prevent latch-up or damage. Exceeding these violates absolute maximum ratings.
MAX110AEPE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Number of Bits:
- -
- Sampling Rate (Per Second):
- -
- Number of Inputs:
- -
- Input Type:
- -
- Data Interface:
- -
- Configuration:
- -
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- -
- Architecture:
- -
- Reference Type:
- -
- Voltage - Supply, Analog:
- -
- Voltage - Supply, Digital:
- -
- Features:
- -
- Operating Temperature:
- -
- Supplier Device Package:
- -
- Mounting Type:
- -
- Grade:
- -
- Qualification:
- -
MAX110AEPE+ FAQ
1.How can I place an order for MAX110AEPE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX110AEPE+ 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 MAX110AEPE+ reliable?
The price and inventory of MAX110AEPE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX110AEPE+ is usually 5 days.
3.What payment methods are accepted for MAX110AEPE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX110AEPE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX110AEPE+?
MAX110AEPE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX110AEPE+ 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 MAX110AEPE+?
For technical support, including MAX110AEPE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX110AEPE+ requirements.
6.How does Aetrix verify that MAX110AEPE+ is sourced from the original manufacturer or authorized distributors?
All MAX110AEPE+ 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 MAX110AEPE+ meets industry standards.
7.What is the process for return or replacement of MAX110AEPE+?
All MAX110AEPE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX110AEPE+, 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 MAX110AEPE+ part is unused and in its original packaging.
Return procedure for MAX110AEPE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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