DATASHEET
ISL26102, ISL26104 FN7608
Rev 0.00
October 12, 2012 Low-Noise 24-bit Delta Sigma ADC
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. Features The on-chip low-noise programmable-gain amplifier provides
gains ranging from 1 to 128, which supports В±19.5mVFS from
a 5V reference. The high input impedance allows direct
connection of sensors such as load cell bridges to ensure the
specified measurement accuracy without additional circuitry. Output word rates up to 4kSps The Delta-Sigma ADC features a 3rd-order modulator providing
up to 21.5 bit noise-free performance (10Sps), with
user-selectable word rates. The converter can be operated
from an external clock source, an external crystal (typically
4.9152MHz), or the on-chip oscillator. ISL26104 in 28 Ld TSSOP Programmable gain amplifier with gains of 1 to 128 Low noise: 7nV/в€љHz @ PGA = 128 Linearity error: 0.0002% FS Low-side switch for load cell power management +5V analog and +2.7V to +5V digital supplies ISL26102 in 24 Ld TSSOP ESD 7.5kV -HBM Applications Weigh scales The ISL26102 and ISL26104 offer a simple-to-use serial
interface. Temperature monitors and controls Load safety systems The ISL26102 and ISL26104 are available in a Thin Shrink
Small Outline Package (TSSOP). The devices are specified for
operation over the automotive temperature range (-40В°C to
+105В°C). Industrial process control Pressure sensors Related Literature
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