AD4115 datasheet(1/51 Pages) AD

Part #	AD4115

Description	Single-Supply, Multichannel, 125 kSPS, 24-Bit, Sigma-Delta ADC with 짹10 V Inputs

PDF	51 Pages

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Manufacturer	AD [Analog Devices]

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Single-Supply, Multichannel, 125 kSPS,

24-Bit, Sigma-Delta ADC with ±10 V Inputs

Data Sheet

AD4115

Rev. 0

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rights of third parties that may result from its use. Specifications subject to change without notice.

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Tel: 781.329.4700

Technical Support

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FEATURES

24-bit ADC with integrated AFE

Fast and flexible output rate: 2.5 SPS to 125 kSPS

Channel scan data rate of 24,845 SPS per channel

(40.25 µs settling)

85 dB common mode rejection of 50 Hz and 60 Hz at

20 SPS per channel

±10 V inputs, either 8 differential or 16 single-ended

VIN pin absolute maximum rating ±65 V

Absolute input pin voltage up to ±20 V

Minimum 1 MΩ impedance

On-chip 2.5 V reference

±0.12% initial accuracy at 25°C, ±5 ppm/°C (typical) drift

Internal or external clock

Power supplies

AVDD = 4.5 V to 5.5 V

IOVDD = 2 V to 5.5 V

Total current consumption AVDD + IOVDD (IDD) = 10.4 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

APPLICATIONS

Process control

Programmable logic controller (PLC) and distributed control

system (DCS) modules

Instrumentation and measurement

GENERAL DESCRIPTION

The AD4115 is a low power, low noise, 24-bit, sigma-delta (Σ-Δ)

analog-to-digital converter (ADC) that integrates an analog

front end (AFE) for fully differential or single-ended, high

impedance (≥1 MΩ), bipolar, ±10 V voltage inputs.

The AD4115 integrates key analog and digital signal

conditioning blocks to configure eight individual setups for

each analog input channel in use. The AD4115 features a

maximum channel scan rate of 24,845 kSPS (40.25 µs) for fully

settled data.

The embedded 2.5 V, low drift (±5 ppm/°C), band gap internal

reference (with output reference buffer) reduces the external

component count.

The digital filter allows flexible settings, including simultaneous

50 Hz and 60 Hz rejection at a 27.27 SPS output data rate. The

user can select different filter settings depending on the

requirements of each channel in the application. The automatic

channel sequencer enables the ADC to switch through each

enabled channel.

The precision performance of the AD4115 is achieved by

integrating the proprietary iPassives® technology from Analog

Devices, Inc. The AD4115 is factory calibrated to achieve a high

degree of specified accuracy.

The AD4115 operates with a single power supply that allows

simplified use in galvanically isolated applications. The specified

operating temperature range is −40°C to +105°C. The AD4115

is housed in a 40-lead, 6 mm × 6 mm LFCSP.

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