Overview
The MAX1415AEWE+ is a 16-bit, low-power, 2-channel, sigma-delta analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is part of the MAX1415/MAX1416 series, which offers high-resolution conversion with no missing codes. It is designed as a pin-compatible upgrade to the MX7705/AD7705 and features an internal oscillator, an on-chip input buffer, and a programmable gain amplifier (PGA). The MAX1415AEWE+ is available in a 16-pin SO package, making it suitable for a variety of applications requiring precise and reliable analog-to-digital conversion.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| Resolution | - | - | - | 16-bit | - | - |
| Input Capacitance (AIN) | - | Gain = 1 | - | - | 34 pF | pF |
| Input Sampling Rate (fs) | - | Gain = 1 to 128 | - | fCLKIN / 64 | - | MHz |
| Common-Mode Rejection (CMR) | - | Gain = 1 | - | - | 105 dB | dB |
| Power-Supply Rejection Ratio (PSRR) | - | VDD = 2.7V to 3.6V | - | - | - | dB |
| Internal-Clock Frequency (fCLK) | - | TA = -40°C to +85°C | 1 MHz / 2.4576 MHz | - | ±4% | MHz |
| Digital Interface | - | - | - | SPI-/ QSPI-/ MICROWIRE-compatible | - | - |
| Package Type | - | - | - | 16-pin SO | - | - |
Key Features
- 16-bit resolution with no missing codes using a sigma-delta modulator and digital filter.
- Internal oscillator with options for 1 MHz or 2.4576 MHz.
- On-chip input buffer and programmable gain amplifier (PGA) with gains from 1 to 128.
- SPI-/ QSPI-/ MICROWIRE-compatible serial interface.
- Self-calibration for internal zero-scale and full-scale calibration.
- Excellent DC accuracy and noise performance.
- Low power consumption.
Applications
- Industrial Instruments
- Weigh Scales
- Strain-Gauge Measurements
- Loop-Powered Systems
- Flow and Gas Meters
- Medical Instrumentation
- Pressure Transducers
- Thermocouple Measurements
- RTD Measurements
Q & A
- What is the resolution of the MAX1415AEWE+ ADC?
The MAX1415AEWE+ has a 16-bit resolution with no missing codes.
- What types of packages are available for the MAX1415AEWE+?
The MAX1415AEWE+ is available in 16-pin PDIP, SO, and TSSOP packages.
- What is the internal oscillator frequency of the MAX1415AEWE+?
The internal oscillator frequency can be set to either 1 MHz or 2.4576 MHz.
- Does the MAX1415AEWE+ have an on-chip input buffer and PGA?
- What kind of digital interface does the MAX1415AEWE+ support?
The MAX1415AEWE+ supports SPI-/ QSPI-/ MICROWIRE-compatible serial interfaces.
- What are some common applications for the MAX1415AEWE+?
Common applications include industrial instruments, weigh scales, strain-gauge measurements, loop-powered systems, flow and gas meters, medical instrumentation, pressure transducers, thermocouple measurements, and RTD measurements.
- How does the self-calibration feature work on the MAX1415AEWE+?
The self-calibration feature performs an internal zero-scale and full-scale calibration by shorting the analog inputs together internally during zero-scale calibration.
- What is the power supply range for the MAX1415AEWE+?
The power supply range is from 2.7V to 3.6V.
- What is the common-mode rejection ratio (CMR) of the MAX1415AEWE+?
The CMR ranges from 105 dB to 130 dB depending on the gain setting.
- Is the MAX1415AEWE+ suitable for low-power applications?
