8-Channel, 1 MSPS, 10-Bit SAR ADC

The AD7298-1 is a 10-bit, high speed, low power, 8-channel, successive approximation ADC. The part operates from a single 3.3 V power supply and features throughput rates up to 1 MSPS. The device contains a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 30 MHz.

The AD7298-1 offers a programmable sequencer, which enables the selection of a preprogrammable sequence of channels for conversion. The device has an on-chip, 2.5 V reference that can be disabled to allow the use of an external reference.

The device offers a 4-wire serial interface compatible with SPI and DSP interface standards.

The AD7298-1 uses advanced design techniques to achieve very low power dissipation at high throughput rates. The part also offers flexible power/throughput rate management options. The part is offered in a 20-lead LFCSP package.

PRODUCT HIGHLIGHTS

* Ideally Suited to Monitoring System Variables in a Variety of Systems. This includes telecommunications, and process and industrial control.

* High Throughput Rate of 1 MSPS with Low Power Consumption.

* Eight Single-Ended Inputs with a Channel Sequencer. A consecutive sequence of channels can be selected on which the ADC cycles and converts.

* 10-bit SAR ADC

8 single-ended inputs

Channel sequencer functionality

Fast throughput of 1 MSPS

Analog input range: 0 V to 2.5 V

* Temperature range: −40°C to +125°C

* Specified for VDD of 2.8 V to 3.6V