Vref

Vdig

Vana

Controller

Vana

Vref

ADC

Filtering

UART

&I/O

16Bit /250KSPS

FFT(DSP)

Impedance

Clamping

Match &

Gain & Filtering

Array

PV

String

1:100

SM73201

www.ti.com

SNOSB89B – JUNE 2011 – REVISED JUNE 2013

SM73201 16-Bit, 50 to 250 kSPS, Differential Input, MicroPower ADC

Check for Samples: SM73201

1

FEATURES

DESCRIPTION

The SM73201 is a 16-bit successive-approximation

234

•

Renewable Energy Grade

register (SAR) Analog-to-Digital converter (ADC) with

•

Specified Performance from 50 to 250 kSPS

a maximum sampling rate of 250 kSPS. The

•

Separate Digital Input/Output Supply

converter features a differential analog input with an

excellent common-mode signal rejection ratio of 85

•

True Differential Input

dB,

making

the

SM73201

suitable

for

noisy

•

External Voltage Reference Range of +0.5V to

environments.

The SM73201 operates with a single analog supply

•

Wide Input Common-Mode Voltage Range of

•

SPI™/ QSPI™/MICROWIRE Compatible Serial

from +2.7V to +5.5V. This allows a system designer

Interface

to

maximize

performance

and

minimize

power

consumption by operating the analog portion of the

•

Operating Temperature Range of

−40°C to

+85°C

controller. The serial data output is binary 2's

•

Small VSSOP-10 Package

complement and is SPI compatible.

The performance of the SM73201 is specified over

APPLICATIONS

temperature at clock rates of 1 MHz to 5 MHz and

•

PV DC Arc Detect System

reference voltages of +2.5V to +5.5V. The SM73201

•

I/O Modules

is available in a small 10-lead VSSOP package. The

high

accuracy,

differential

input,

low

power

•

Solar Data Acquisition

consumption, and small size make the SM73201

•

Instrumentation and Control Systems

ideal for direct connection to bridge sensors and

transducers in battery operated systems or remote

KEY SPECIFICATIONS

data acquisition applications.

•

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

Typical Application

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

QSPI is a trademark of Motorola Incorporated.

3

SPI is a trademark of Motorola, Incorporated.

4

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2011–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.