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Analog Devices Inc./Maxim Integrated MAX1415EUE+T
- Part No.:
- MAX1415EUE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX1415EUE+T.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,189
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Product details
Overview
The MAX1415EUE+T from Maxim Integrated is a 16-bit, low-power, 2-channel sigma-delta analog-to-digital converter (ADC) with integrated PGA (gain 1–128), on-chip input buffer, and internal oscillator (1 MHz or 2.4576 MHz). It delivers ±0.0015% INL (max), no missing codes, and >98 dB 50/60 Hz rejection - optimized for high-precision industrial sensing in loop-powered systems and weigh scales.
For engineers reviewing the MAX1415EUE+T datasheet, MAX1415EUE+T pinout, MAX1415EUE+T application, or MAX1415EUE+T equivalent, this device supports SPI/QSPI/MICROWIRE serial interface, operates from 2.7V to 3.6V, features on-demand self-calibration, and targets applications demanding DC accuracy, low power (<1.2 mW), and robust noise rejection in harsh EMI environments.
Technical Context
The MAX1415EUE+T implements a second-order sigma-delta modulator with digital filtering to achieve true 16-bit resolution without missing codes. Its architecture includes a programmable gain amplifier (PGA), selectable buffered/unbuffered analog inputs, and dual fully differential input channels (AIN1±, AIN2±) supporting both unipolar and bipolar modes.
It integrates an internal clock generator (1 MHz or 2.4576 MHz) and supports external clocking via CLKIN/CLKOUT. The digital filter provides configurable first-notch frequencies (e.g., 20/25/50/60 Hz) enabling >98 dB normal-mode and >150 dB common-mode 50/60 Hz rejection - critical for strain-gauge and thermocouple measurements in noisy industrial settings.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - guarantees monotonicity and full code coverage for precision measurement integrity. |
| INL (max) | ±0.0015% FSR at gain = 1, bipolar unbuffered - enables sub-1 LSB error across full scale in calibrated systems. |
| Supply Voltage | 2.7V to 3.6V - compatible with 3V industrial and battery-backed sensor nodes without level-shifting. |
| Power Dissipation | 1.2 mW max at 3V - allows continuous operation in thermally constrained or energy-harvested loop-powered transmitters. |
| 50/60 Hz Rejection | >98 dB normal-mode, >150 dB common-mode - eliminates mains interference without external notch filters in weigh scales and pressure transducers. |
| PGA Gain Range | 1 to 128 - supports direct connection of µV-level thermocouples and mV-output bridge sensors without external amplification. |
| Self-Calibration | On-demand offset/gain calibration with user-programmable registers - maintains accuracy over temperature and time without host MCU intervention. |
Pinout & Package
MAX1415EUE+T is housed in a 16-pin TSSOP package (4.4 mm × 5.0 mm, 0.65 mm pitch), specified for -40°C to +85°C operation and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SCLK | Serial clock input | Synchronizes data transfer; compatible with SPI/QSPI/MICROWIRE timing (min pulse width 100 ns). |
| 2 DIN | Serial data input | Accepts configuration commands (e.g., gain, channel select, calibration control) with 30 ns setup/20 ns hold. |
| 3 DOUT | Serial data output | Tri-state output delivering conversion results; valid within 0–100 ns after SCLK fall edge. |
| 4 CS | Chip select input | Active-low enables serial interface; requires 120 ns setup before first SCLK rising edge. |
| 5 DRDY | Data ready indicator | Open-drain output pulses low when conversion completes; used for interrupt-driven readout. |
| 6 RESET | Hardware reset input | Asynchronous active-low reset; requires ≥100 ns low pulse to clear registers and restart calibration state. |
| 7 REF+ | Positive reference input | Accepts 1.00–1.75 V differential reference; input capacitance 10 pF enables stable decoupling with 0.1 µF. |
| 8 REF- | Negative reference input | Completes reference path; common-mode range extends to GND and VDD for flexible reference sourcing. |
| 9 AIN1+ | Channel 1 positive input | Differential input with ±30 mV absolute overvoltage tolerance; supports buffered/unbuffered modes via S1/S2. |
| 10 AIN1- | Channel 1 negative input | Paired with AIN1+; common-mode rejection up to 130 dB (gain ≥8) improves noise immunity in noisy plants. |
| 11 AIN2+ | Channel 2 positive input | Second fully differential input; identical specs to AIN1± - enables dual-sensor monitoring (e.g., temp + strain). |
| 12 AIN2- | Channel 2 negative input | Supports independent gain/offset calibration per channel - critical for multi-transducer systems. |
| 13 CLKIN | External clock input | Accepts 400–2500 kHz square wave; internal oscillator disabled when CLKIN is driven. |
| 14 CLKOUT | Clock output | Drives external crystal/resonator; outputs internal clock frequency (1/2.4576 MHz) when not used as input. |
| 15 VDD | Positive supply | 2.7–3.6 V operation; PSRR >86 dB (gain=1) reduces sensitivity to supply ripple in shared-rail systems. |
| 16 GND | Analog/digital ground | Single ground pin; layout best practice requires star grounding near REF+/REF- and analog inputs. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated PGA (1–128) | Eliminates external op-amp stages for microvolt-level sensors (e.g., load cells), reducing BOM cost and board area. |
| On-chip input buffer | Enables high-impedance sensor interfaces (e.g., RTDs) without signal degradation; improves CMR by up to 25 dB. |
| Programmable 50/60 Hz rejection | Configurable digital filter notches remove mains interference in factory-floor instrumentation without analog filters. |
| On-demand self-calibration | Offset/gain calibration triggered via register write - maintains accuracy over temperature drift and long-term aging. |
| Low-power shutdown mode | 2 µA typical current draw enables duty-cycled sensing in battery-operated field devices with <1 s wake-up latency. |
Applications
| Industrial Weigh Scales | Strain-Gauge Measurements |
|---|---|
|
Use Scenario: High-resolution weight measurement in platform scales and hopper load cells under variable ambient temperature and EMI. IC Role / Device Role: Primary ADC digitizing mV-level bridge outputs with PGA gain set to 128 and 60 Hz rejection enabled. Use Value: ±0.0015% INL and on-demand calibration ensure NTEP Class III compliance without recalibration during seasonal temperature shifts. |
Use Scenario: Monitoring mechanical stress in structural health monitoring systems using bonded foil strain gauges. IC Role / Device Role: Dual-channel ADC acquiring differential signals from quarter-bridge and temperature-compensation sensors simultaneously. Use Value: >130 dB CMR at gain=128 rejects common-mode noise from motor drives and welding equipment nearby. |
| Loop-Powered Transmitters | Thermocouple Measurements |
|
Use Scenario: 4–20 mA smart transmitter for pressure or flow sensing in hazardous areas with strict power budget (<4 mA @ 24 V). IC Role / Device Role: Low-power ADC converting sensor output while consuming only 1.2 mW, leaving ample headroom for microcontroller and DAC. Use Value: 2.7–3.6 V operation and 2 µA shutdown current enable ultra-low quiescent design meeting IEC 61000-6-2 immunity requirements. |
Use Scenario: Cold-junction compensated Type K thermocouple reading in furnace controllers with wide -40°C to +85°C operating range. IC Role / Device Role: ADC digitizing thermocouple voltage (µV range) with PGA gain=128 and internal offset calibration for zero-point stability. Use Value: 0.5 µV/°C bipolar zero drift (gain=1–4) ensures <0.5°C error over full industrial temperature range without firmware compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision sigma-delta ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7705BRUZ | 16-bit, 2-channel sigma-delta ADC; 2.7–5.25 V supply; no internal oscillator; requires external clock source. | Lacks integrated oscillator and PGA auto-calibration; needs external crystal and gain-setting resistors. | Select when legacy AD7705 footprint compatibility is required and external clock infrastructure already exists. |
| ADS1220IPWR | 24-bit, 2-channel delta-sigma ADC; 2.5–5.5 V supply; integrated PGA (1–128), reference, and burn-out detection. | Higher resolution but higher power (350 µA typ); lacks 50/60 Hz notch filter - requires software-based rejection. | Select when 24-bit resolution is mandatory and system can accommodate higher current draw and custom filtering. |
Compared with AD7705BRUZ and ADS1220IPWR, the MAX1415EUE+T uniquely combines integrated oscillator, hardware 50/60 Hz rejection, and 2 µA shutdown current - making it optimal for cost-sensitive, low-power, mains-noise-prone industrial transmitters where pin count and external component count must be minimized.
Availability
MAX1415EUE+T is available at Aetrix Electronics and suitable for industrial instruments, weigh scales, and loop-powered systems requiring stable component supply, long-term lifecycle support, and traceable sourcing for ISO 9001-certified production.
Supply support for MAX1415EUE+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 high-performance analog and mixed-signal ICs for industrial, automotive, and communications markets, emphasizing integration, reliability, and power efficiency.
The MAX1415/MAX1416 product line targets precision sensor signal conditioning in resource-constrained industrial systems, integrating PGA, reference, clock, and digital filtering to replace multi-chip solutions with a single 16-bit sigma-delta ADC.
FAQ
What is the operating temperature range for the MAX1415EUE+T?
The MAX1415EUE+T is rated for operation from -40°C to +85°C, matching industrial environmental requirements. This range is validated across all electrical specifications including INL, gain error, and power consumption - ensuring reliable performance in factory-floor and outdoor instrumentation without derating.
Does the MAX1415EUE+T require an external reference voltage?
No - the MAX1415EUE+T accepts an external differential reference (REF+ and REF-) but does not include an internal reference. It supports 1.00 V to 1.75 V differential reference inputs, enabling use with precision external references (e.g., REF192) or ratiometric configurations tied to sensor excitation.
How does the MAX1415EUE+T handle 50/60 Hz interference in industrial environments?
The MAX1415EUE+T uses a configurable digital filter with programmable first-notch frequencies (e.g., 25 Hz/50 Hz or 20 Hz/60 Hz) to deliver >98 dB normal-mode and >150 dB common-mode rejection - eliminating mains interference without external analog filters or firmware processing overhead.
Can the MAX1415EUE+T operate from a 3.3 V supply?
Yes - the MAX1415EUE+T is specified for 2.7 V to 3.6 V operation, making it fully compatible with standard 3.3 V logic and power rails. Its PSRR exceeds 86 dB at gain = 1, ensuring stable performance even with moderate supply ripple in shared-rail systems.
Is the MAX1415EUE+T pin-compatible with the AD7705?
Yes - the MAX1415EUE+T is explicitly designed as a pin-compatible upgrade to the AD7705 and MX7705, sharing identical pinout, register map, and serial interface protocol. This enables drop-in replacement without PCB redesign or firmware changes in existing AD7705-based systems.
MAX1415EUE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 500
- Number of Inputs:
- 2
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- MUX-PGA-ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V
- Features:
- PGA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1415EUE+T FAQ
1.How can I place an order for MAX1415EUE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1415EUE+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 MAX1415EUE+T reliable?
The price and inventory of MAX1415EUE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1415EUE+T is usually 5 days.
3.What payment methods are accepted for MAX1415EUE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1415EUE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1415EUE+T?
MAX1415EUE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1415EUE+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 MAX1415EUE+T?
For technical support, including MAX1415EUE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1415EUE+T requirements.
6.How does Aetrix verify that MAX1415EUE+T is sourced from the original manufacturer or authorized distributors?
All MAX1415EUE+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 MAX1415EUE+T meets industry standards.
7.What is the process for return or replacement of MAX1415EUE+T?
All MAX1415EUE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1415EUE+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 MAX1415EUE+T part is unused and in its original packaging.
Return procedure for MAX1415EUE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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