Analog Devices AD4116

Description

The AD4116 integrates a low noise, fast settling, 24-bit Σ-Δ analogto-digital converter (ADC) with an analog front end (AFE) for fully differential or single-ended, bipolar, ±10 V voltage inputs and five low voltage ADC inputs. The AD4116 is designed to work with programmable logic controller (PLC) and distributed control system (DCS) modules of industrial automation applications.This application note details the functionality of the AD4116 electromagnetic compatibility (EMC) printed circuit board (PCB) that can be used with the AD4116 for a typical ±10 V voltage and ±2.5 low-voltage input. The board design demonstrates a proven EMC solution for industrial automation applications. The IEC 61000-4-x set of standards discusses the evaluation of immunity of electrical and electronic equipment at a system level.

Features

• 24-bit ADC with integrated analog front end
• Fast and flexible output rate: 1.25 SPS to 62.5 kSPS
• Channel scan data rate
• 12,422 SPS per channel (80 µs settling, sinc5 + sinc1)
• 20,618 SPS per channel (48 µs settling, sinc3)
• 85 dB rejection of 50 Hz and 60 Hz at 20 SPS per channel
• ±10 V inputs, 6 differential or 11 single-ended
• Pin absolute maximum rating: ±65 V
• Absolute input pin voltage up to ±20 V
• ≥10 MΩ impedance
• Low level direct ADC input
• ±VREF inputs, 2 differential or 4 single-ended
• Absolute input pin voltage, AVDD to AVSS
• True rail-to-rail analog input buffers
• On-chip 2.5 V reference
• ±0.12% accuracy at 25°C, ±5 ppm/°C (typical) drift
• Internal or external clock
• Power supplies
• AVDD to AVSS = 4.5 V to 5.5 V
• IOVDD to DGND = 2 V to 5.5 V
• Total IDD (AVDD + IOVDD) = 6.15 mA
• Temperature range: −40°C to +105°C
• 3-wire or 4-wire serial digital interface (Schmitt trigger on SCLK)
• SPI, QSPI, MICROWIRE, and DSP compatible

Typical applications

• Process control PLC and DCS modules, Instrumentation and measurement

More information

• Datasheet
• IC product information