Texas Instruments has introduced a successive-approximation-register ADC with a downloadable TINA-TI SPICE model, enabling system designers to simulate and characterize the full analog signal chain in software for the first time. The model is available for the new 12-bit, 1-MSPS, 8-channel ADS8028, a highly-integrated SAR ADC featuring a low-drift internal voltage reference, wide external analog voltage reference range, wide analog and digital supply ranges, and an internal temperature sensor.
The TINA-TI reference design and product evaluation includes the OPA836 driver amplifier for fast software simulation and hardware evaluation. Integration to reduce board space and bill of material sis an internal 2.5-V reference, ±1 ° C accurate temperature sensor and internal multiplexer with sequencer; it also eliminates the need for an external decoupling capacitor. The device consumes a maximum of 36 microWatts in power-down mode across a wide operating temperature range of -40 to 125 °C in a small 4 x 4-mm package to support battery-powered, space-constrained designs. Low power consumption, wide temperature and supply ranges, and a high level of integration enable use in a wide variety of applications, including portable consumer electronics, wireless infrastructure and industrial equipment.In addition to the TINA-TI SPICE model, an IBIS model is available to verify board signal integrity requirements. The ADS8028EVM-PDK is also available to expedite evaluation of the new ADC.
