SM73201 Datasheet, PDF (1/21 Pages) Texas Instruments – 16-Bit, 50 to 250 kSPS, Differential Input, MicroPower ADC

SM73201
May 30, 2012
16-Bit, 50 to 250 kSPS, Differential Input, MicroPower ADC
General 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 differ-
ential 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 (V_A) and
a separate digital input/output (V_IO) supply. V_A can range from
+4.5V to +5.5V and V_IO can range from +2.7V to +5.5V. This
allows a system designer to maximize performance and min-
imize power consumption by operating the analog portion of
the ADC at a V_A of +5V while interfacing with a +3.3V con-
troller. The serial data output is binary 2's complement and is
SPI™ compatible.
The performance of the SM73201 is guaranteed over tem-
perature 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 MSOP 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 ac-
quisition applications.
Applications
■ ^{PV DC Arc Detect System}
■ ^{I/O Modules}
■ ^{Solar Data Acquisition}
■ ^{Instrumentation and Control Systems}
Features
■ ^{Renewable Energy Grade}
■ ^{Guaranteed performance from 50 to 250 kSPS}
■ ^{Separate Digital Input/Output Supply}
■ ^{True differential input}
■ ^{External voltage reference range of +0.5V to V}_A
■ ^{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 MSOP-10 package}
Key Specifications
■ ^{Conversion Rate}
■ ^SNR
■ ^SFDR
■ ^THD
■ ^{Power Consumption}
■ — ^{200 kSPS, 5V}
— 250 kSPS, 5V
— Power-Down, 5V
50 kSPS to 250 kSPS
93.2 dBc
108 dBc
− 104 dBc
5.3 mW
5.8 mW
10 µW
Typical Application
30155482
TRI-STATE® is a trademark of National Semiconductor Corporation.
MICROWIRE™ is a trademark of National Semiconductor Corporation.
QSPI™ and SPI™ are trademarks of Motorola, Inc.
© 2012 Texas Instruments Incorporated 301554 SNOSB89A
www.ti.com