Description:The ISL26102 and ISL26104 provide a low-noise programmable gain amplifier along with a 24-bit Delta-Sigma Analog-to-Digital Converter with two channel (ISL26102) or four channel (ISL26104) differential, multiplexed inputs. The devices feature exceptional noise performance for conversion rates ranging from 2. 5Sps to 4kSps. The on-chip low-noise programmable-gain amplifier provides gains ranging from 1 to 128, which supports ±19. 5mVFS from a 5V reference. The high input impedance allows direct connection of
A good PCB layout for the ISL26102AVZ involves keeping the analog and digital grounds separate, using a solid ground plane, and placing the device close to the analog signal sources. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
To ensure proper calibration, follow the calibration procedure outlined in the datasheet, which involves shorting the VIN+ and VIN- pins together and adjusting the offset voltage to zero. Additionally, use a high-precision voltage reference and ensure the device is operated within its specified temperature range.
The maximum allowed input voltage for the ISL26102AVZ is 12V. To protect the device from overvoltage conditions, use a voltage limiter or a transient voltage suppressor (TVS) diode in series with the input pins. Additionally, consider adding a fuse or a current-limiting resistor to prevent damage from excessive current.
To optimize the ISL26102AVZ for low-power consumption, operate the device in the low-power mode (LPEN = 0), reduce the clock frequency, and minimize the number of conversions per second. Additionally, consider using a low-dropout regulator (LDO) to power the device and optimize the PCB layout to minimize power consumption.
The recommended method for interfacing the ISL26102AVZ with a microcontroller or digital signal processor is through a serial peripheral interface (SPI) or an inter-integrated circuit (I2C) interface. Ensure the interface is properly configured and the clock frequency is within the specified range.
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ISL26102AVZ Overview
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