General Description
The MAX11154 18-bit, 500ksps, SAR ADC offers excellent
AC and DC performance with unipolar input range, small
size, and internal reference. The MAX11154 integrates an
optional internal reference and buffer, saving additional
cost and space.
This ADC typically achieves 93.8dB SNR and -105.8dB THD.
The device guarantees 18-bit no-missing codes and ±2
LSB INL (typ).
The MAX11154 communicates using an SPI-compatible
serial interface at 2.3V, 3V, 3.3V, or 5V logic. The serial
interface can be used to daisy-chain multiple ADCs for
multichannel applications and provides a busy indicator
option for simplified system synchronization and timing.
The MAX11154 is offered in a 12-pin, 3mm x 3mm,
TDFN package and is specified over the -40NC to +85NC
temperature range.

Benefits and Features
● High DC/AC Accuracy Improves Measurement Quality
• 18-Bit Resolution with No Missing Codes
• 500ksps Throughput Rates without Pipeline Delay/
Latency
• 93.8dB SNR and -105.8dB THD at 10kHz
• 1.7 LSBRMS Transition Noise
• ±0.6 LSB DNL (typ) and ±2 LSB INL (typ)
● Highly Integrated ADC Saves Cost and Space
• ±7ppm/°C Internal Reference
• Internal Reference Buffer
● Wide Supply Range and Low Power Simplify
Power-Supply Design
• 5V Analog Supply
• 2.3V to 5V Digital Supply
• 23.6mW Power Consumption with External Reference
at 500ksps
• 10µA in Shutdown Mode
● Multi-Industry Standard Serial Interface and
Small Package Reduce Size
• SPI/QSPI™/MICROWIRE®/DSP-Compatible
Serial Interface
• 3mm x 3mm Tiny 12-Pin TDFN Package

Applications
● Data Acquisition Systems
● Industrial Control Systems/Process Control
● Medical Instrumentation
● Automatic Test Equipment