16-bit, 400-kSPS, low-power, wide-bandwidth delta-sigma ADC with input and reference buffers

The ADS117L11 is a

16-bit, delta-sigma (ΔΣ), analog-to-digital converter (ADC) with

data rates up to 400 kSPS using the wideband filter and up to

1067 kSPS using the low-latency filter. The device offers an

excellent combination of ac performance and dc precision with low

power consumption (18.6 mW in high-speed mode).

The device integrates input and

reference buffers to reduce signal loading. The low-drift modulator achieves

excellent dc precision with low in-band noise for outstanding ac performance. The

power-scalable architecture provides two speed modes to optimize data rate,

resolution, and power consumption.

The digital filter is configurable for wideband or

low-latency operation, optimizing ac performance or data throughput for dc signals, all in

one device.

The serial interface features

daisy-chain capability to reduce the SPI I/O over an isolation barrier. Input and

output data and register settings are validated by a cyclic-redundancy check (CRC)

feature to enhance operational reliability.

The small 3-mm × 3-mm WQFN package is designed for

limited space applications. The device is fully specified for operation over the –40°C to

+125°C temperature range.