• 简体中文
• English

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 sensors such as load cell bridges to ensure the specified measurement accuracy without additional circuitry.

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.

The ISL26102 and ISL26104 offer a simple-to-use serial interface.

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 (-40°C to +105°C).

Key Features

• Programmable gain amplifier with gains of 1 to 128
• Low noise: 7nV/√Hz @ PGA = 128
• Linearity error: 0.0002% FS
• Output word rates up to 4kSps
• Low-side switch for load cell power management
• +5V analog and +2.7V to +5V digital supplies
• ISL26102 in 24 Ld TSSOP
• ISL26104 in 28 Ld TSSOP
• ESD 7.5kV - HBM

Applications

• Weigh scales
• Temperature monitors and controls
• Load safety systems
• Industrial process control
• Pressure sensors