ADS130E08 - Low-Cost, 8-Channel, Integrated Analog Front-End for Metering Applications

The ADS130E08 is a multi-channel, simultaneous sampling, 16-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) with a built-in programmable gain amplifier (PGA), internal reference, and an external oscillator interface.

The device incorporates commonly-required features in industrial metering applications. With high levels of integration and exceptional performance, the ADS130E08 enables the creation of scalable industrial power systems at significantly reduced size, power, and low overall cost.

The ADS130E08 has a flexible input multiplexer per channel that can be independently connected to the internally-generated signals for test, temperature, and fault detection. The ADS130E08 operates at a data rate of 8 kSPS. Fault detection can be implemented internal to the device using the integrated comparators with digital-to-analog converter (DAC)-controlled trigger levels.

Multiple devices can be cascaded in high channel count systems in a daisy-chain configuration. These complete analog front-end (AFE) solutions are packaged in a TQFP-64 package and specified over the industrial temperature range of –40°C to +105°C.

• Eight Differential Current and Voltage Inputs
• Eight Low-Noise PGAs and
  Eight High-Resolution ADCs
• Exceeds Class 1.0 Performance
• CMRR: –110 dB
• Crosstalk: –105 dB
• THD: –108 dB
• Power: 750 µW/Channel
• Data Rates: 8 kSPS
• Programmable Gains (1, 2, and 8)
• DC Coupling:
  • Dual Supplies: +3 V to +5 V or
    +1.8 V to +3.6 V
  • Bipolar Supply: ±2.5 V
• Built-In Test Signals
• Fault Detection Comparators
• Four GPIO Pins
• Internal and External Reference
• Flexible Power-Down: STBY Mode
• SPI™ Data Interface
• Package: TQFP-64 (PAG)
• Operating Temperature Range:
  –40°C to +105°C