Overview
The MAX1415EPE+ 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 designed to offer high-resolution conversion with excellent DC accuracy and low power consumption. It is pin-compatible with the MX7705/AD7705, making it a suitable upgrade for various applications. The MAX1415EPE+ features an internal oscillator, an on-chip input buffer, and a programmable gain amplifier (PGA), along with an SPI-/QSPI-/MICROWIRE®-compatible serial interface.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| AIN Input Capacitance | - | Gain = 1 | - | - | 34 | pF |
| AIN Input Capacitance | - | Gain = 2 | - | - | 38 | pF |
| AIN Input Capacitance | - | Gain = 4 | - | - | 45 | pF |
| AIN Input Capacitance | - | Gain = 8 to 128 | - | - | 60 | pF |
| Input Sampling Rate | fs | Gain = 1 to 128 | - | fCLKIN / 64 | - | MHz |
| Common-Mode Rejection | CMR | Gain = 1 | - | - | 105 | dB |
| Common-Mode Rejection | CMR | Gain = 2 | - | - | 110 | dB |
| Common-Mode Rejection | CMR | Gain = 4 | - | - | 120 | dB |
| Common-Mode Rejection | CMR | Gain = 8 to 128 | - | - | 130 | dB |
| Normal-Mode 50Hz Rejection | - | - | - | - | 98 | dB |
| Normal-Mode 60Hz Rejection | - | - | - | - | 98 | dB |
| External Reference (REF+, REF-) | VREF | - | 1 | - | 3.5 | V |
| Supply Voltage | VDD | - | 2.7 | - | 3.6 | V |
Key Features
- 16-bit resolution with no missing codes using a sigma-delta modulator and digital filter.
- Low power consumption.
- Internal oscillator (1MHz or 2.4576MHz).
- On-chip input buffer and programmable gain amplifier (PGA).
- SPI-/QSPI-/MICROWIRE®-compatible serial interface.
- Available in 16-pin PDIP, SO, and TSSOP packages.
- Excellent DC accuracy and high common-mode rejection ratio (CMRR).
- Normal-mode and common-mode 50Hz and 60Hz rejection.
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 MAX1415EPE+ ADC?
The MAX1415EPE+ has a 16-bit resolution with no missing codes. - What types of packages are available for the MAX1415EPE+?
The MAX1415EPE+ is available in 16-pin PDIP, SO, and TSSOP packages. - What is the power supply range for the MAX1415EPE+?
The supply voltage range is from 2.7V to 3.6V. - Does the MAX1415EPE+ have an internal oscillator?
Yes, it has an internal oscillator with options for 1MHz or 2.4576MHz. - What is the common-mode rejection ratio (CMRR) of the MAX1415EPE+?
The CMRR ranges from 105 dB to 130 dB depending on the gain setting. - What are the typical applications of the MAX1415EPE+?
Typical 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. - Does the MAX1415EPE+ support SPI interface?
Yes, it supports SPI-/QSPI-/MICROWIRE®-compatible serial interface. - What is the input sampling rate of the MAX1415EPE+?
The input sampling rate is fCLKIN / 64 MHz. - Does the MAX1415EPE+ have an on-chip input buffer and PGA?
Yes, it features an on-chip input buffer and a programmable gain amplifier (PGA). - How does the MAX1415EPE+ handle 50Hz and 60Hz noise rejection?
The device has normal-mode and common-mode 50Hz and 60Hz rejection with a rejection ratio of 98 dB.
