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.