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I&sup2C A/D converter guarantees 16-bit performance in small package

Milpitas, Calif.—Linear Technology Corp. has introduced the LTC2453, a 16-bit I²C-compatible delta sigma A/D converter in a 3mm x 2mm DFN package.

Its tiny size, low power and guaranteed 16-bit resolution improves performance of portable instruments and sensors. Operating from a single 2.7V to 5.5V supply, the LTC2453 is capable of measuring a differential input up to ±VCC. This wide input range is suitable for measuring a wide variety of single-ended or differential sensors.

In a 6mm² area, the LTC2453 achieves 16-bit DC performance of 2LSB integral nonlinearity error, 1.4µVRMS transition noise and 0.01% gain error. The LTC2453 has an internal oscillator and allows up to 60 conversions per second, making it easy to measure temperature, pressure, voltage, or other low-frequency sensor outputs.

The LTC2453 draws 800-µA of supply current at the 60Hz maximum sample rate. After each conversion, supply current is reduced to less than 0.2µA, further preserving battery power. If the user samples the device once a second, the LTC2453 dissipates 40-µW from a 3V supply.

The LTC2453 communicates via a simple I²C-compatible 2-wire interface, reducing the number of I/O lines required to read data, making the LTC2453 well-suited for tiny, space-constrained applications. The LTC2453 includes continuous internal offset and full-scale calibration of the input signal, ensuring accuracy over time and over the full operating temperature range.

Pricing: Starts at $1.25 each in 1,000-piece quantities.
Availability: Today in both commercial and industrial temperature grade versions.
Datasheet: click here.

Linear Technology, 1-408-432-1900, www.linear.com

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