TSM1285 Datasheet, PDF (1/15 Pages) Silicon Laboratories – A 300ksps, Single-supply, Low-Power 12-Bit Serial-output ADC

TSM1285
A 300ksps, Single-supply, Low-Power 12-Bit Serial-output ADC
FEATURES
 Alternate Source for MAX1285 and higher-speed
upgrade to MAX1240 and MAX1241
 Single-Supply Operation: +2.7V to +3.6V
 DNL & INL: ±1LSB (max)
 300ksps Sampling Rate
 Low Conversion-Mode Supply Current:
2.5mA @ 300ksps
 Low Supply Current in Shutdown: 2µA
 Internal Track-and-Hold
 Internal +2.5V Reference
 SPI^®/QSPI™/MICROWIRE™ 3-Wire Serial-
Interface¹
 8-Pin SOIC Package
APPLICATIONS
Process Control and Factory Automation
Data and Low-frequency Signal Acquisition
Portable Data Logging
Pen Digitizers & Tablet Computers
Medical Instrumentation
Battery-powered Instruments
DESCRIPTION
The TSM1285 – a single-supply, single-channel, 12-
bit analog-to-digital converter (ADC) - is an alternate
source for the MAX1285 and a higher-speed upgrade
to the MAX1240 and MAX1240 ADCs. The TSM1285
combines a high-bandwidth track-and-hold (T/H), a
high-speed serial digital interface, an internal +2.5V
reference, and low conversion-mode power
consumption. The TSM1285 operates from a single
+2.7V to+3.6V supply and draws less than 2.5mA at
300ksps.
Connecting directly to any SPI, QSPI, MICROWIRE™
microcontrollers and other interface-compatible
computing devices, the TSM1285’s 3-wire serial
interface is easy to use and doesn’t require separate,
external logic. An external serial-interface clock
controls the TSM1285’s conversion process and its
output shift register operation.
In PCB-space-conscious, low-power remote-sensor
and data-acquisition applications, the TSM1285 is an
excellent choice for its low-power, ease-of-use, and
small-package-footprint attributes.
1 _{SPI and QSPI are trademarks of Motorola, Inc.}
MICROWIRE is a trademark of National
Semiconductor Corporation.
The TSM1285BC is fully specified over the
0°C to +70°C temperature range. TSM1285BE is fully
specified over the -40°C to +85°C temperature range.
Both products are available in a 8-pin SOIC package.
FUNCTIONAL BLOCK DIAGRAM
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