Small data converters deliver high integration and performance

The ADS122C04 and ADS122U04 are 24-bit precision analogue-to-digital converters (ADCs) that feature a two-wire, I2C-compatible interface and a two-wire, UART-compatible interface, respectively.

These new devices join a portfolio of precision ADCs and DACs optimised for a variety of small-size, high performance or cost sensitive industrial, communications and personal electronics applications. Examples include optical modules, field transmitters, battery-powered systems, building automation and wearables.

Achieve high performance in compact spaces with the DAC80508 and DAC70508

• Reduce system size: Both DACs include a 2.5V, 5-ppm/°C internal reference, eliminating the need for an external precision reference. Available in a 2.4x2.4mm die-size ball-grid array (DSBGA) package or wafer chip-scale package (WCSP), and a 3x3mm quad flat no-lead (QFN)-16 package, these devices are up to 36% smaller than the competition. The new DACs eliminate the typical trade-off between high performance and small size, enabling engineers to achieve the best system accuracy, while reducing board size or increasing channel density.
• Maximise system accuracy and achieve higher reliability: In addition to their compact size, the DAC80508 and DAC70508 provide true, one Least Significant Bit (LSB) integral nonlinearity to achieve the highest level of accuracy at 16- and 14-bit resolution - up to 66% better linearity than the competition. They are fully specified over a -40°C to +125°C extended temperature range and provide features such as Cyclic Redundancy Check (CRC) to increase system reliability.

Reduce system size and achieve high performance with the ADS122C04 and ADS122U04

• Minimise footprint: These tiny, 24-bit precision ADCs are available in 3x3mm very thin QFN (WQFN)-16 and 5x4.4mm Thin-Shrink Small-Outline Package (TSSOP)-16 options. The two-wire interface requires fewer digital isolation channels than a standard Serial Peripheral Interface (SPI), reducing the overall cost of an isolated system. These precision ADCs eliminate the need for external circuitry by integrating a flexible input multiplexer, a low-noise programmable gain amplifier, two programmable excitation current sources, an oscillator and a precision temperature sensor.
• Improve performance: Both devices feature a low-drift 2.048V, 5ppm/°C internal reference. Their internal 2% accurate oscillators help designers improve power-line cycle noise rejection, enabling higher accuracy in noisy environments. With gains from 1-128 and noise as low as 100nV, designers can measure both small-signal sensors and wide input ranges with one ADC. These device families, which also include pin-to-pin-compatible 16-bit options, give designers the flexibility to meet various system requirements by scaling performance up or down.