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ADC081S021
SNAS308G – APRIL 2005 – REVISED MAY 2016
ADC081S021 Single-Channel, 50-ksps to 200-ksps, 8-Bit A/D Converter
1 Features
•1 Characterized and Specified Over Multiple Sample Rates
• 6-Pin WSON and SOT-23 Packages • Variable Power Management • Single Power Supply With 2.7-V to 5.25-V Range • Compatible With SPI™, QSPI™, MICROWIRE™,
and DSP • DNL: +0.04/–0.03 LSB (Typical) • INL: +0.04/–0.03 LSB (Typical) • SNR: 49.6 dB (Typical) • Power Consumption:
– 3.6-V Supply: 1.3 mW (Typical) – 5.25-V Supply: 7.7 mW (Typical)
2 Applications
• Portable Systems • Remote Data Acquisition • Instrumentation and Control Systems
3 Description
The ADC081S021 device is a low-power, singlechannel CMOS 8-bit analog-to-digital converter with a high-speed serial interface. Unlike the conventional practice of specifying performance at a single sample rate only, the ADC081S021 is fully specified over a sample rate range of 50 ksps to 200 ksps. The converter is based upon a successive-approximation register architecture with an internal track-and-hold circuit.
The output serial data is straight binary, and is compatible with several standards, such as SPI, QSPI, MICROWIRE, and many common DSP serial interfaces.
The ADC081S021 operates with a single supply that can range from 2.7 V to 5.25 V. Normal power consumption using a 3.6-V or 5.25-V supply is 1.3 mW and 7.7 mW, respectively. The power-down feature reduces the power consumption to as low as 2.6 µW using a 5.25-V supply.
The ADC081S021 is packaged in 6-pin WSON and SOT-23 packages. Operation over the industrial temperature range of −40°C to 85°C is ensured.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
ADC081S021
SOT-23 (6) WSON (6)
2.50 mm × 2.20 mm 1.60 mm × 2.90 mm
(1) For all available packages, see the orderable addendum at the end of the data sheet.
Block Diagram
VIN T/H
8-BIT SUCCESSIVE APPROXIMATION
ADC
CONTROL LOGIC
SCLK CS SDATA
Copyright © 2016, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA.
ADC081S021
SNAS308G – APRIL 2005 – REVISED MAY 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1 2 Applications ........................................................... 1 3 Description ............................................................. 1 4 Revision History..................................................... 2 5 Device Comparison Table..................................... 3 6 Pin Configuration and Functions ......................... 3 7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ...................................... 4 7.2 ESD Ratings...............................