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Analog Devices Inc./Maxim Integrated MAX1415AEWE+T
- Part No.:
- MAX1415AEWE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX1415AEWE+T.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,807
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Product details
Overview
MAX1415AEWE+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 (1MHz or 2.4576MHz). It delivers no missing codes, ±0.0015% INL (max), and >98dB 50Hz/60Hz rejection - optimized for high-precision industrial sensor interfaces such as strain-gauge and RTD measurements in loop-powered systems.
For engineers reviewing the MAX1415AEWE+T datasheet, MAX1415AEWE+T pinout, MAX1415AEWE+T application, or MAX1415AEWE+T equivalent, key selection criteria include its 2.7V–3.6V single-supply operation, SPI/QSPI/MICROWIRE-compatible serial interface, buffered/unbuffered analog input modes, and self-calibration capability for offset and gain - all in a 16-pin TSSOP package.
Technical Context
The MAX1415AEWE+T employs a second-order sigma-delta modulator with digital filtering to achieve true 16-bit resolution without missing codes. Its architecture integrates a programmable gain amplifier (PGA), optional input buffers, and dual fully-differential analog input channels (AIN1±, AIN2±) supporting both unipolar and bipolar configurations.
It features an internal clock generator (selectable 1MHz or 2.4576MHz), supports external clocking via CLKIN/CLKOUT, and provides on-demand system calibration using user-programmable offset/gain registers. The device operates with a 2.7V–3.6V supply and achieves 1.2mW max power dissipation at 3V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - guarantees monotonicity and full code coverage for precision measurement systems. |
| INL (max) | ±0.0015% FSR - enables sub-1 LSB error across full scale, critical for weigh scales and pressure transducers. |
| Supply Voltage | 2.7V to 3.6V - compatible with battery- and loop-powered industrial sensors requiring low-voltage operation. |
| Power Dissipation | 1.2mW (max) at 3V - reduces thermal drift and extends battery life in portable instrumentation. |
| 50/60Hz Rejection | >98dB - suppresses mains interference without external notch filters, simplifying PCB layout in noisy environments. |
| PGA Gain Range | 1 to 128 - allows direct interfacing with mV-level outputs from strain gauges and thermocouples without external amplification. |
| Operating Temp | −40°C to +85°C - qualified for industrial-grade embedded applications including flow meters and process control. |
Pinout & Package
MAX1415AEWE+T is housed in a 16-pin TSSOP package (4.4mm × 5.0mm, 0.65mm pitch) with exposed pad for thermal performance. Pin functions are validated per Maxim's official datasheet revision 3 (19-3163).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCLK | Serial clock input | Drives synchronous data transfer; accepts up to 2.5MHz clock for SPI/QSPI/MICROWIRE timing compliance. |
| DIN | Serial data input | Accepts configuration commands (e.g., gain, buffer enable, calibration triggers) during CS low. |
| DOUT | Serial data output | Tri-state output delivering conversion results and status bits; requires CS control for bus sharing. |
| CS | Chip select | Active-low enables serial interface; must be held low for entire frame to avoid data corruption. |
| DRDY | Data ready indicator | Open-drain output signals valid conversion result; used for interrupt-driven firmware polling. |
| RESET | Hardware reset | Asynchronous active-low input that clears internal registers and restarts oscillator startup sequence. |
| CLKIN / CLKOUT | Crystal oscillator terminals | Supports external crystal (e.g., 2.4576MHz) or ceramic resonator; internal oscillator enabled when CLKIN left floating. |
| AIN1+, AIN1− AIN2+, AIN2− | Differential analog inputs | Two independent fully-differential channels; S1/S2 switches configure buffered/unbuffered mode per channel. |
| REF+, REF− | Reference voltage inputs | Accept 1.00V–1.75V differential reference; determines full-scale range and noise floor scaling. |
| VDD, GND | Power supply | Single 2.7V–3.6V supply; decoupling capacitor (0.1µF) required at VDD pin for stable sigma-delta operation. |
Key Features
| Feature | Design Value |
|---|---|
| On-demand self-calibration | Offset and gain calibration executed in-system via command register - eliminates factory trim dependency and compensates for temperature drift. |
| Programmable input buffering | Buffered mode increases common-mode rejection (up to 130dB at gain ≥8) and relaxes source impedance requirements (<1kΩ). |
| Internal oscillator options | Selectable 1MHz or 2.4576MHz clock - avoids external crystal cost while enabling precise 50/60Hz rejection via digital filter notching. |
| Low power-down current | 2μA (typ) at 3V - enables microamp-level sleep states in battery-operated handheld test equipment. |
| SPI/QSPI/MICROWIRE compatibility | Standard 3-wire serial interface with CS, SCLK, DIN/DOUT - interoperable with most microcontrollers without protocol translation. |
Applications
| Industrial Weigh Scales | Strain-Gauge Measurement Systems |
|---|---|
Use Scenario: High-resolution weight measurement in platform scales and hopper load cells using quarter-bridge strain gauges. IC Role / Device Role: Primary ADC digitizing low-level mV differential outputs after PGA amplification and 50/60Hz line-noise rejection. Use Value: 16-bit no-missing-codes resolution and ±0.0015% INL ensure repeatability to 0.01% of full scale, meeting OIML R76 Class III requirements. | Use Scenario: Static and dynamic force monitoring in structural health testing with multi-element strain gauge arrays. IC Role / Device Role: Dual-channel simultaneous sampling ADC with programmable gain and on-chip buffer to drive high-impedance gauges. Use Value: >98dB 50Hz/60Hz rejection eliminates need for external analog filters; buffered input supports gauges with >10kΩ source impedance. |
| Loop-Powered Transmitters | RTD Temperature Sensors |
Use Scenario: 4–20mA field transmitter for pressure or level sensing in hazardous areas with strict power budget (<4mA @ 24V). IC Role / Device Role: Low-power ADC acquiring sensor data and feeding microcontroller for HART modulation and current loop control. Use Value: 1.2mW max power at 3V and 2μA power-down current enable full functionality within 3.5mA total loop budget. | Use Scenario: Precision 3-wire or 4-wire RTD measurement in HVAC controllers and industrial ovens. IC Role / Device Role: ADC with internal PGA and reference handling ratiometric excitation and cold-junction compensation. Use Value: Programmable gain (1–128) accommodates Pt100 (≈0.4Ω/°C) and Pt1000 (≈4Ω/°C) without external gain stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar sigma-delta ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7705BRUZ | 16-bit, 2-channel sigma-delta ADC; 2.7V–5.25V supply; no internal oscillator; requires external clock or crystal. | Lacks integrated oscillator and PGA auto-ranging; lower common-mode rejection (90dB) and higher power (1mW @ 3V). | Choose AD7705BRUZ only if external clock infrastructure already exists and PGA flexibility is not required. |
| ADS1220IPWR | 24-bit, 2-channel delta-sigma ADC; integrated PGA (1–128), VREF, and burn-out current sources; SPI interface. | Higher resolution but larger 20-pin TSSOP package; 2.7V–5.5V supply; lacks built-in 50/60Hz notch filter configuration. | ADS1220IPWR suits applications needing >16-bit resolution and integrated diagnostics, but requires additional firmware for 50/60Hz rejection. |
Compared with AD7705BRUZ and ADS1220IPWR, the MAX1415AEWE+T uniquely combines 16-bit no-missing-codes accuracy, integrated 1MHz/2.4576MHz oscillator, >98dB 50/60Hz rejection, and 2μA power-down current - making it optimal for cost-sensitive, space-constrained, and mains-noise-prone industrial sensor nodes.
Availability
MAX1415AEWE+T is available at Aetrix Electronics and suitable for industrial instruments, weigh scales, and strain-gauge measurement systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX1415AEWE+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 and mixed-signal ICs for industrial, medical, and communications applications.
The MAX1415/MAX1416 product line targets high-accuracy, low-power sensor signal conditioning - specifically engineered for DC-critical applications like weigh scales, pressure transducers, and RTD/thermocouple interfaces where noise, drift, and power efficiency are paramount.
FAQ
What is the operating supply voltage range for the MAX1415AEWE+T?
The MAX1415AEWE+T operates from 2.7V to 3.6V. This single-supply range is specified for the MAX1415 variant and confirmed in the Electrical Characteristics table for MAX1415AEWE+T under "Power-Supply Voltage". Operation outside this range may cause functional failure or damage.
Does the MAX1415AEWE+T support both buffered and unbuffered analog input modes?
Yes, the MAX1415AEWE+T supports both modes via internal switch control (S1/S2). Buffered mode improves common-mode rejection (up to 130dB) and allows high-impedance sensor interfaces; unbuffered mode reduces power and noise for low-impedance sources. Configuration is controlled by register bits per the datasheet Functional Description.
What is the maximum achievable 50Hz/60Hz rejection with the MAX1415AEWE+T?
The MAX1415AEWE+T achieves >98dB normal-mode and >150dB common-mode rejection at 50Hz and 60Hz when configured with appropriate filter notches (e.g., 25Hz/50Hz or 20Hz/60Hz). This performance is guaranteed in both buffered and unbuffered modes and does not require external components.
Can the MAX1415AEWE+T perform on-demand calibration without external hardware?
Yes, the MAX1415AEWE+T supports on-demand offset and gain self-calibration using internal references - triggered via command register writes. System calibration (using external reference) is also supported. No external DACs, op-amps, or precision voltage sources are needed for basic calibration sequences.
Is the MAX1415AEWE+T pin-compatible with the AD7705 or MX7705?
Yes, the MAX1415AEWE+T is explicitly documented as a pin-compatible upgrade to the MX7705 and AD7705. All pin functions, package dimensions (16-pin TSSOP), and register map layouts match - enabling drop-in replacement in existing designs with no PCB changes required.
MAX1415AEWE+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:
- Obsolete
- 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-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1415AEWE+T FAQ
1.How can I place an order for MAX1415AEWE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1415AEWE+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 MAX1415AEWE+T reliable?
The price and inventory of MAX1415AEWE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1415AEWE+T is usually 5 days.
3.What payment methods are accepted for MAX1415AEWE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1415AEWE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1415AEWE+T?
MAX1415AEWE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1415AEWE+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 MAX1415AEWE+T?
For technical support, including MAX1415AEWE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1415AEWE+T requirements.
6.How does Aetrix verify that MAX1415AEWE+T is sourced from the original manufacturer or authorized distributors?
All MAX1415AEWE+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 MAX1415AEWE+T meets industry standards.
7.What is the process for return or replacement of MAX1415AEWE+T?
All MAX1415AEWE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1415AEWE+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 MAX1415AEWE+T part is unused and in its original packaging.
Return procedure for MAX1415AEWE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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