AD7298BCPZ-RL7

The AD7298 is a 12-bit, high-speed, low-power, 8-channel, successive approximation ADC with an integrated temperature sensor. It operates from a single 3.3 V supply and supports throughput rates up to 1 MSPS. The device integrates a low-noise, wide-bandwidth track-and-hold amplifier capable of handling input frequencies up to 30 MHz. The AD7298 features a programmable sequencer for selecting preprogrammed channel conversion sequences. An on-chip 2.5 V reference is included and can be disabled to accommodate an external reference. The AD7298 incorporates a high-accuracy bandgap temperature sensor monitored and digitized by the 12-bit ADC, providing a resolution of 0.25°C. The device offers a 4-wire serial interface compatible with SPI and DSP interface standards. Advanced design techniques enable ultralow power consumption at high throughput rates. The device also provides flexible power management/throughput rate options and is available in a 20-lead LFCSP package.

Key features

• 12-bit SAR ADC
• 8-channel single-ended input sequencer
• High throughput rate: 1 MSPS
• Analog input range: 0 V to 2.5 V
• 12-bit temperature-to-digital converter
• Temperature sensor accuracy: ±1°C
• Temperature range: -40°C to +125°C
• Supply voltage (VDD): 2.8 V to 3.6 V
• Logic voltage (VDRIVE): 1.65 V to 3.6 V
• Power-down mode current: <10 μA
• 2.5 V internal voltage reference
• Internal power-on reset
• High-speed SPI serial interface
• 20-lead LFCSP package