Overview
The MX7705EUE+T, produced by Analog Devices Inc./Maxim Integrated, is a 16-bit, low-power, 2-channel, sigma-delta analog-to-digital converter (ADC). This device is designed for high precision and low power consumption, making it ideal for various industrial and medical applications. The MX7705 is pin compatible and software compatible with the AD7705, ensuring seamless integration into existing systems. It features an on-chip input buffer and a programmable-gain amplifier (PGA), along with a digital filter that provides excellent noise rejection and signal processing capabilities.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 16-bit |
| Number of Channels | 2 |
| Input Type | Fully differential bipolar/unipolar |
| Supply Voltage | 2.7V to 5.25V |
| Operating Supply Current | 320µA (typ) at 3V |
| Power-Down Current | 2µA (typ) |
| Integral Nonlinearity (INL) | ±0.003% FSR |
| Noise | 650nV |
| Interface | SPI-/QSPI-/MICROWIRE-compatible 3-wire serial interface |
| Package | 16-pin TSSOP |
| Operating Temperature | -40°C to +85°C |
Key Features
- Pin compatible and software compatible with the AD7705
- On-chip input buffer and programmable-gain amplifier (PGA) from 1 to 128
- Internal digital filter with programmable cutoff and output data rate
- High noise rejection: 150dB for common-mode 50Hz or 60Hz noise, 98dB for normal-mode 50Hz or 60Hz noise
- Low power consumption: 1mW (max) at 3V supply
- Self-calibration and system calibration for gain and offset error correction
- SPI-/QSPI-/MICROWIRE-compatible 3-wire serial interface
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 MX7705 ADC?
The MX7705 has a 16-bit resolution.
- How many input channels does the MX7705 have?
The MX7705 has two fully differential input channels.
- What is the supply voltage range for the MX7705?
The supply voltage range is from 2.7V to 5.25V.
- What is the typical operating supply current at 3V?
The typical operating supply current is 320µA at 3V.
- What is the power-down current of the MX7705?
The power-down current is 2µA (typ).
- What type of interface does the MX7705 use?
The MX7705 uses an SPI-/QSPI-/MICROWIRE-compatible 3-wire serial interface.
- What is the package type of the MX7705EUE+T?
The package type is a 16-pin TSSOP.
- What are the key applications of the MX7705?
The MX7705 is used in 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 MX7705 support self-calibration?
Yes, the MX7705 supports self-calibration and system calibration for gain and offset error correction.
- What is the noise rejection capability of the MX7705's digital filter?
The digital filter provides 150dB rejection of common-mode 50Hz or 60Hz noise and 98dB rejection of normal-mode 50Hz or 60Hz noise.
