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Analog Devices Inc./Maxim Integrated MAX110ACPE+
- Part No.:
- MAX110ACPE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX110ACPE+.pdf
- Description:
- IC ADC 14BIT SIGMA-DELTA 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,246
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Product details
Overview
MAX110ACPE+ from Maxim Integrated is a ±14-bit, 2-channel differential serial ADC with internal auto-calibration, operating from ±5V supplies and delivering 0.03% INL, 550µA supply current, and 50Hz/60Hz rejection - designed for high-accuracy remote sensing and panel meter applications.
For engineers reviewing the MAX110ACPE+ datasheet, MAX110ACPE+ pinout, MAX110ACPE+ application, or MAX110ACPE+ equivalent, this device supports SPI/QSPI/MICROWIRE interfaces, offers ±3V differential input range, and enables battery-powered data acquisition with 4µA power-down current and no external components required.
Technical Context
The MAX110ACPE+ 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 in twos-complement format. It uses an oversampling clock (fOSC) divided by 1/2/4 to control conversion time and noise attenuation.
Calibration is performed under µP control via dedicated control register bits (CAL, NUL), correcting both offset and gain errors. The device supports two differential analog inputs (IN1±, IN2±), programmable conversion timing (10,240–102,400 clocks/conv), and dual-clock modes: external TTL/CMOS XCLK or internal RC oscillator (RCSEL-controlled).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | ±14-bit + sign + overrange (16-bit serial output); ensures 16,384 distinct codes across ±VREF with overflow detection. |
| INL (Relative Accuracy) | ±0.03% FSR (max); guarantees monotonicity and <1 LSB error within ±2.5V input range for precision measurement. |
| Supply Current | 550µA typical (active), 4µA (power-down); enables multi-year operation on coin-cell batteries in portable instrumentation. |
| Differential Input Range | ±3V (with ±5V supplies and VREF = ±1.5V); supports industrial sensor outputs without external signal conditioning. |
| Conversion Rate | Up to 50 conversions/sec (at minimum 10,240 clocks/conv); balances speed and noise rejection for low-frequency process signals. |
| Power-Supply Rejection | 30 ppm/V (typical); maintains accuracy despite ±5% VDD/VSS variation in unregulated supply environments. |
| 50Hz/60Hz Rejection | Integrated digital filtering rejects line-frequency interference without external notch filters or software averaging. |
Pinout & Package
MAX110ACPE+ is housed in a 16-pin plastic DIP (Dual In-line Package) with 0.3-inch body width and through-hole mounting. Pin 1 is marked with a dot or bevel; pin numbering follows standard counter-clockwise layout from top-left corner when viewed from component side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN1+) | Differential analog input channel 1 positive | Accepts signal up to VDD − 2.25V; used with IN1− for true differential measurement of ±3V-range sensors. |
| 2 (REF−) | Negative reference input | Defines lower bound of reference voltage (VREF = REF+ − REF−); must be ≤ VSS + 2.25V for valid operation. |
| 3 (REF+) | Positive reference input | Defines upper bound of reference voltage; sets full-scale range (e.g., REF+ = +1.5V, REF− = −1.5V → VREF = 3V). |
| 4 (VDD) | Positive supply rail | +5V ±5% input; powers analog core and digital interface; decoupling capacitor required at pin. |
| 5 (RCSEL) | Oscillator mode select | High = enable internal RC oscillator; low = accept external clock on XCLK; determines clock source autonomy. |
| 6 (XCLK) | Oversampling clock I/O | Input for external clock (RCSEL = GND) or output of internal RC oscillator (RCSEL = VDD); drives sigma-delta loop timing. |
| 7 (SCLK) | Serial interface clock | TTL/CMOS-compatible input controlling DIN/DOUT bit transfer; supports DC–2MHz; rising edge clocks DIN, falling edge clocks DOUT. |
| 8 (DIN) | Serial data input | Loads 16-bit control word (NO-OP, CONVx, CAL, PD, etc.) to configure conversion mode, calibration, and power state. |
| 9 (DOUT) | Serial data output | 3-state output shifting 16-bit result (POL, OFL, D13–D0) MSB-first; high-impedance when CS is high. |
| 10 (BUSY) | Conversion status flag | Active-low open-drain output signaling conversion progress; used for interrupt-driven µP synchronization. |
| 11 (IN1−) | Differential analog input channel 1 negative | Completes differential pair with IN1+; common-mode voltage must stay within VSS + 2.25V to VDD − 2.25V. |
| 12 (IN2+) | Differential analog input channel 2 positive | Second independent differential input; shares same reference and timing resources as IN1±. |
| 13 (IN2−) | Differential analog input channel 2 negative | Completes second differential pair; enables dual-sensor monitoring (e.g., load cell + temperature sensor). |
| 14 (VSS) | Negative supply rail | −5V ±5% input; powers analog section; requires separate low-noise ground path from digital ground. |
| 15 (GND) | Digital ground | Reference for digital I/O (CS, SCLK, DIN, DOUT, BUSY); must be connected to system DGND with minimal impedance. |
| 16 (CS) | Chip-select input | Active-low enable for serial interface; initiates control-word write or data read; rising edge triggers conversion if NO-OP = 1. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-calibration under µP control | Enables on-demand offset/gain correction via CAL/NUL bits - eliminates factory trim and drift compensation in field-deployed systems. |
| No external components required | Integrates precision voltage-to-current converter, integrator, comparator, DAC, and clock divider - reduces BOM count and PCB area by >5 components. |
| 50Hz/60Hz line-frequency rejection | Hardware-based digital filtering synchronized to oversampling clock - removes mains interference without firmware overhead or external filters. |
| Two independent differential input channels | Allows simultaneous sampling of two isolated sensor bridges (e.g., strain gauge + thermocouple) using shared reference and timing resources. |
| Low-power shutdown mode (4µA) | PD/PDX bit control disables analog core and RC oscillator - extends battery life in intermittent-read applications like wireless sensor nodes. |
| SPI/QSPI/MICROWIRE compatibility | Native support for industry-standard serial protocols with CPHA=0/CPOL=0 timing - simplifies integration with ARM Cortex-M, PIC, and legacy 8051 microcontrollers. |
Applications
| Process Control Monitoring | Weigh Scale Interface |
|---|---|
|
Use Scenario: Continuous analog monitoring of pressure, flow, or level transmitters in PLC-based industrial automation cabinets. IC Role / Device Role / Timing Role: Primary ADC converting 4–20mA loop outputs (via precision shunt) into calibrated digital values for PID controller input. Use Value: ±0.03% INL and 50Hz rejection ensure stable closed-loop control under noisy factory EMI conditions without software averaging. |
Use Scenario: High-resolution weight measurement in commercial bench scales using full-bridge load cells. IC Role / Device Role / Timing Role: Differential front-end digitizing mV/V bridge outputs with programmable gain and auto-zero calibration. Use Value: Two-channel capability allows simultaneous reading of main load cell and temperature compensation sensor - improving thermal drift accuracy. |
| Panel Meter Front-End | Temperature Data Logger |
|
Use Scenario: Compact digital panel meters for HVAC, power quality, or lab equipment requiring ±3V analog input support. IC Role / Device Role / Timing Role: Standalone ADC feeding 4-digit LED display driver; operates directly from ±5V rails with no LDOs or op-amps. Use Value: 16-pin DIP package and zero external components reduce bill-of-materials cost and simplify CE/UL compliance testing. |
Use Scenario: Battery-powered environmental logger recording thermistor or RTD readings over weeks in remote locations. IC Role / Device Role / Timing Role: Low-power ADC sampling thermistor voltage dividers every 10 seconds, then entering 4µA shutdown between reads. Use Value: 550µA active current and 4µA shutdown extend CR2032 battery life beyond 2 years at 10s sampling interval. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 14-bit differential ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1115IDGSR | Single-supply (2.0–5.5V), I²C interface, onboard PGA (1–16×), 860SPS max, no internal oscillator - requires external clock or µP timing. | Better suited for low-voltage embedded systems with I²C buses; lacks ±5V dual-supply tolerance and hardware 50/60Hz rejection. | Select when system uses I²C, needs programmable gain, and operates below 3.3V - not drop-in for ±5V industrial designs. |
| AD7705BRUZ | ±2.5V reference fixed, 16-bit sigma-delta, SPI interface, 10Hz–500Hz output rate, 1mW typical power - no overrange bit or sign extension. | Optimized for ultra-low-noise weigh scale applications; lacks second differential channel and programmable conversion timing. | Prefer for high-precision single-channel measurements where 16-bit resolution without sign bit suffices and 50Hz rejection is handled externally. |
Compared with ADS1115IDGSR and AD7705BRUZ, the MAX110ACPE+ uniquely combines ±5V dual-supply operation, hardware 50/60Hz rejection, dual differential inputs, and self-contained RC oscillator - making it optimal for legacy industrial instrumentation requiring minimal µP intervention and robust EMI immunity.
Availability
MAX110ACPE+ is available at Aetrix Electronics and suitable for process control, weigh scale, and panel meter applications requiring stable component supply, long-term obsolescence management, and traceable sourcing for industrial OEMs.
Supply support for MAX110ACPE+ 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 data acquisition in battery-powered and remote-sensing instrumentation - emphasizing low power, self-calibration, and minimal external component count.
FAQ
What is the operating temperature range for MAX110ACPE+?
The MAX110ACPE+ is rated for 0°C to +70°C ambient operation, as indicated by the 'C' grade suffix in its ordering code. This range covers commercial and light-industrial environments where airflow and enclosure design maintain moderate thermal conditions. The device meets all electrical specifications across this full range, including ±0.03% INL and 550µA supply current. For extended temperature applications, consider the MAX110BCPE+ (−40°C to +85°C) variant.
Does MAX110ACPE+ require external calibration components?
No, the MAX110ACPE+ requires no external calibration components. Its internal auto-calibration circuitry corrects both offset and gain errors under microprocessor control using dedicated CAL and NUL bits in the control register. This eliminates the need for trimming potentiometers, laser-trimmed resistors, or external reference buffers - reducing BOM cost and board space while enabling field recalibration during maintenance cycles.
How does the power-down mode function in MAX110ACPE+?
The MAX110ACPE+ enters 4µA power-down mode when both PD (bit 0) and PDX (bit 1) in the control register are set high, or when PD = 1 and RCSEL = low. This disables the analog core and internal RC oscillator. To resume operation, a "dummy" control word (NO-OP = 0) must be written first to reset the state machine, followed by a normal conversion command (NO-OP = 1). This sequence prevents BUSY lockup after oscillator stop.
Can MAX110ACPE+ interface directly with an Arduino or STM32 MCU?
Yes, the MAX110ACPE+ supports SPI, QSPI, and MICROWIRE protocols with standard timing (CPHA = 0, CPOL = 0), making it compatible with Arduino (using SPI library) and STM32 (via hardware SPI peripheral). Key connections include CS, SCLK, DIN, DOUT, and BUSY (for interrupt-driven reads). No level-shifting is needed for 5V-tolerant MCUs; for 3.3V MCUs, verify logic thresholds using VIH/VIL specs from the datasheet.
What is the maximum differential input voltage range supported by MAX110ACPE+?
The MAX110ACPE+ supports a ±3V differential input range when operated with ±5V supplies and VREF = ±1.5V (i.e., REF+ = +1.5V, REF− = −1.5V). Within this range, full 14-bit performance is guaranteed; improved linearity (±0.03% INL) applies to the ±2.5V sub-range. Absolute input pin voltages must remain between VSS + 2.25V and VDD − 2.25V - i.e., −2.75V to +2.75V for ±5V supplies.
MAX110ACPE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- 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-PDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
MAX110ACPE+ FAQ
1.How can I place an order for MAX110ACPE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX110ACPE+ 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 MAX110ACPE+ reliable?
The price and inventory of MAX110ACPE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX110ACPE+ is usually 5 days.
3.What payment methods are accepted for MAX110ACPE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX110ACPE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX110ACPE+?
MAX110ACPE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX110ACPE+ 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 MAX110ACPE+?
For technical support, including MAX110ACPE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX110ACPE+ requirements.
6.How does Aetrix verify that MAX110ACPE+ is sourced from the original manufacturer or authorized distributors?
All MAX110ACPE+ 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 MAX110ACPE+ meets industry standards.
7.What is the process for return or replacement of MAX110ACPE+?
All MAX110ACPE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX110ACPE+, 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 MAX110ACPE+ part is unused and in its original packaging.
Return procedure for MAX110ACPE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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