1FEATURES
234• Renewable Energy Grade
• Specified Performance from 50 to 250 kSPS
• Separate Digital Input/Output Supply
• True Differential Input
• External Voltage Reference Range of +0.5V to
VA
• Wide Input Common-Mode Voltage Range of
0V to V A
• SPI™/ QSPI™/MICROWIRE Compatible Serial
Interface
• Operating Temperature Range of −40°C to
+85°C
• Small VSSOP-10 Package

APPLICATIONS
• PV DC Arc Detect System
• I/O Modules
• Solar Data Acquisition
• Instrumentation and Control Systems

KEY SPECIFICATIONS
• Conversion Rate: 50 kSPS to 250 kSPS
• SNR: 93.2 dBc
• SFDR: 108 dBc
• THD: −104 dBc
• Power Consumption
– 200 kSPS, 5V: 5.3 mW
– 250 kSPS, 5V: 5.8 mW
– Power-Down, 5V: 10 μW

DESCRIPTION
The SM73201 is a 16-bit successive-approximation
register (SAR) Analog-to-Digital converter (ADC) with
a maximum sampling rate of 250 kSPS. The
converter features a differential analog input with an
excellent common-mode signal rejection ratio of 85
dB, making the SM73201 suitable for noisy environments.
The SM73201 operates with a single analog supply
(VA) and a separate digital input/output (VIO) supply.
VA can range from +4.5V to +5.5V and VIO can range
from +2.7V to +5.5V. This allows a system designer
to maximize performance and minimize power
consumption by operating the analog portion of the
ADC at a VA of +5V while interfacing with a +3.3V
controller. The serial data output is binary 2's
complement and is SPI compatible.
The performance of the SM73201 is specified over
temperature at clock rates of 1 MHz to 5 MHz and
reference voltages of +2.5V to +5.5V. The SM73201
is available in a small 10-lead VSSOP package. The
high accuracy, differential input, low power
consumption, and small size make the SM73201
ideal for direct connection to bridge sensors and
transducers in battery operated systems or remote
data acquisition applications.