The Analog Devices AD4170 is a DC to 50 kHz input bandwidth, low-noise, high-speed, completely integrated analog front end for high-precision measurement applications. The AD4170 offers output data rates from 7.6 SPS up to 500 kSPS. The device contains a low-noise 24-bit Σ-Δ analog-to-digital converter (ADC) and can be configured to have four differential inputs or eight single-ended or pseudodifferential inputs. The on-chip low noise gain stage ensures that signals of small amplitude can be interfaced directly to the AD4170. It also has extensive diagnostic functionality integrated as part of its comprehensive feature set. These diagnostics include a cyclic redundancy check (CRC), signal chain checks, and serial interface checks, which lead to a more robust solution.

The AD4170 also offers a multitude of digital filter options, ensuring a high degree of flexibility. The device contains a finite impulse response (FIR) filter which offers low pass-band ripple for analog inputs from DC up to 50 kHz, quick roll-off, and excellent stop-band rejection. Also available in this device is a programmable FIR filter that can accept up to 72 user coefficients. The part contains sinc filters which allow faster settling in multiplexed applications. In addition, the AD4170 offers multiple options for simultaneous 50 Hz and 60 Hz rejection. The device operates with a single analog power supply from 4.75 V to 5.25 V or a bipolar +2.5 V power supply. The digital supply has a range of 1.7 V to 5.25 V. The device is specified for a temperature range of -40°C to +105°C. The AD4170-4 is housed in a 32-lead LFCSP package.