Analog Devices Inc. AD4116 Analog-to-Digital Converters (ADCs)

Analog Devices Inc. AD4116 Analog-to-Digital Converters (ADCs) are low power, low noise, and 24-bit sigma-delta (Σ-Δ) ADCs that integrate the proprietary iPassives^® technology for precision performance. These ADCs integrate an Analog Front End (AFE) for six fully differential or eleven single-ended, high-impedance (≥10MΩ) bipolar, and ±10V voltage inputs. The additional two differential or four single-ended/pseudo differential direct ADC inputs provide excellent performance at lower input ranges. The AD4116 ADCs feature a maximum-channel scan rate of 12,422SPS (80µs) using a sinc5 + sinc1 filter and 20,618SPS per channel (48µs) using a sinc3 filter. The AD4116 converters operate with a single power supply and make it easy to use in galvanically isolated applications. These AD4116 ADCs are housed in a 40-lead, 6mm x 6mm LFCSP package.

The AD4116 ADCs’ digital filter allows flexible settings, including simultaneous 50Hz and 60Hz rejection at a 27.27SPS output data rate. The user can select between the different filter settings depending on the demands of each channel in the application. The automatic channel sequencer enables the ADC to switch through each enabled channel. Ideally, these AD4116 ADCs are used in process control, Programmable Logic Controller (PLC) modules, Distributed Control System (DCS) modules, instrumentation, and measurement applications.

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FEATURES

24-bit ADC with integrated AFE
1.25SPS to 62.5kSPS fast and flexible output rate
Channel scan data rate:
- 12,422SPS per channel (80µs settling, sinc5 + sinc1)
- 20,618SPS per channel (48µs settling, sinc3)
- 85dB rejection of 50Hz and 60Hz at 20SPS per channel
±10V inputs, 6 differential or 11 single-ended
Pin absolute maximum rating of ±65V
Up to ±20V absolute input pin voltage
≥10MΩ impedance
Low-level direct ADC input:
- ±V_REF inputs, 2 differential or 4 single-ended
- Absolute input pin voltage, AV_DD to AV_SS
- True rail-to-rail analog input buffers

On-chip 2.5V reference:
- ±0.12% accuracy at 25°C, ±5ppm/°C (typical) drift
Internal or external clock
Power supplies:
- AV_DD to AV_SS = 4.5V to 5.5V
- IOV_DD to D_GND = 2V to 5.5V
- Total I_DD (AV_DD + IOV_DD) = 6.15mA
-40°C to +105°C operating temperature range
3-wire or 4-wire serial digital interface (Schmitt trigger on SCLK)
SPI, QSPI, MICROWIRE, and DSP compatible
6mm x 6mm LFCSP package

APPLICATIONS

Programmable Logic Controller (PLC) modules
Distributed Control System (DCS) modules
Instrumentation and measurement