Low-Noise 24-bit Delta Sigma ADC
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Overview
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 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).
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
Applications
- Weigh scales
- Temperature monitors and controls
- Load safety systems
- Industrial process control
- Pressure sensors
Documentation
| Title | Type | Date | |
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PDF1.30 MB
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Datasheet
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PDF503 KB
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Application Note
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PDF1.08 MB
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Application Note
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PDF287 KB
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Application Note
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Brochure
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PDF1.17 MB
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End Of Life Notice
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PDF430 KB
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Manual - Development Tools
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PDF1.21 MB
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Manual - Development Tools
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PDF2.48 MB
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Manual - Development Tools
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PDF208 KB
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Price Increase Notice
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Design & Development
Software & Tools
Boards & Kits
Boards & Kits
Low-Noise 24-bit Delta-Sigma A/D Converter Evaluation Board
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Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Product Options
Processing table
| TSSOP | Tube | 500 | ||
| TSSOP | Reel | 2500 | ||
| TSSOP | Reel | 250 |
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