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( File format: PDF, 688 KB )
Two 1-Bit, 10MHz, 2nd-Order, Delta-Sigma Modulators (Rev. B)
Texas Instruments

Description
The ADS1205 is a two-channel, high-performance, delta-sigma () modulator with more than 98dB dynamic range, operating from a single +5V supply. The differential inputs are ideal for direct connection to transducers in an industrial environment. With the appropriate digital filter and modulator rate, the device can be used to achieve 16-bit analog-to-digital (A/D) conversion with no missing codes. Effective resolution of 14 bits can be obtained with a digital filter bandwidth of 40kHz at a modulator rate of 10MHz. The ADS1205 is designed for use in high-resolution measurement applications including current measurements, smart transmitters, industrial process control, and resolvers. It is available in a QFN-24 (4x4) package.
Features
16-Bit Resolution 14-Bit Linearity 2.5V Input Range at 2.5V Internal Reference Voltage: 2% Gain Error: 0.5% Two Independent Delta-Sigma Modulators Two Input Reference Buffers On-Chip 20MHz Oscillator Selectable Internal or External Clock Operating Temperature Range: -40C to +85C QFN-24 (4x4) Package APPLICATIONS Motor Control Current Measurement Industrial Process Control Instrumentation Resolver All trademarks are the property of their respective owners.

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