Converter. ADC081S051 Datasheet

ADC081S051 Datasheet PDF


Part

ADC081S051

Description

Single Channel 200 to 500ksps 8-Bit A/D Converter

Manufacture

etcTI

Page 28 Pages
Datasheet
Download ADC081S051 Datasheet


ADC081S051 Datasheet
ADC081S051
www.ti.com
SNAS309F – APRIL 2005 – REVISED JANUARY 2014
ADC081S051 Single Channel, 200 to 500 ksps, 8-Bit A/D Converter
Check for Samples: ADC081S051
FEATURES
1
2 Specified Over a Range of Sample Rates
• 6-lead WSON and SOT-23 Packages
• Variable Power Management
• Single Power Supply with 2.7V - 5.25V Range
• SPI™/QSPI™/MICROWIRE/DSP Compatible
KEY SPECIFICATIONS
• DNL: +0.06 / -0.045 LSB (Typ)
• INL: +0.06 / -0.05 LSB (Typ)
• SNR: 49.6 dB (Typ)
• Power Consumption:
– 3.6V Supply: 1.6 mW (Typ)
– 5.25V Supply: 8.5 mW (Typ)
APPLICATIONS
• Portable Systems
• Remote Data Acquisition
• Instrumentation and Control Systems
DESCRIPTION
The ADC081S051 is a low-power, single channel
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 ADC081S051 is fully specified over a
sample rate range of 200 ksps to 500 ksps. The
converter is based on 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 ADC081S051 operates with a single supply that
can range from +2.7V to +5.25V. Normal power
consumption using a +3.6V or +5.25V supply is 1.6
mW and 8.5 mW, respectively. The power-down
feature reduces the power consumption to as low as
2.6 µW using a +5.25V supply.
The ADC081S051 is packaged in 6-lead WSON and
SOT-23 packages. Operation over the industrial
temperature range of 40°C to +85°C is ensured.
Table 1. Pin-Compatible Alternatives by Resolution and Speed(1)
Resolution
12-bit
10-bit
8-bit
50 to 200 ksps
ADC121S021
ADC101S021
ADC081S021
Specified for Sample Rate Range of:
200 to 500 ksps
ADC121S051
ADC101S051
ADC081S051
500 ksps to 1 Msps
ADC121S101
ADC081S101
ADC081S101
(1) All devices are fully pin and function compatible.
Connection Diagram
VA
GND
16
2 ADC081S051 5
CS
SDATA
VIN 3
4 SCLK
Figure 1. 6-Lead WSON or SOT-23
See NGF0006A or DBV Package
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.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2005–2014, Texas Instruments Incorporated

ADC081S051 Datasheet
ADC081S051
SNAS309F – APRIL 2005 – REVISED JANUARY 2014
Block Diagram
VIN T/H
8-BIT
SUCCESSIVE
APPROXIMATION
ADC
www.ti.com
CONTROL
LOGIC
SCLK
CS
SDATA
Pin No.
Symbol
ANALOG I/O
3
DIGITAL I/O
VIN
4 SCLK
5 SDATA
6 CS
POWER SUPPLY
1
2
PAD
VA
GND
GND
PIN DESCRIPTIONS and EQUIVALENT CIRCUITS
Description
Analog input. This signal can range from 0V to VA.
Digital clock input. This clock directly controls the conversion and readout processes.
Digital data output. The output samples are clocked out of this pin on falling edges of the SCLK pin.
Chip select. On the falling edge of CS, a conversion process begins.
Positive supply pin. This pin should be connected to a quiet +2.7V to +5.25V source and bypassed to
GND with a 1 µF capacitor and a 0.1 µF monolithic capacitor located within 1 cm of the power pin.
The ground return for the supply and signals.
For package suffix CISD(X) only, it is recommended that the center pad should be connected to ground.
2 Submit Documentation Feedback
Copyright © 2005–2014, Texas Instruments Incorporated
Product Folder Links: ADC081S051


Features Datasheet pdf ADC081S051 www.ti.com SNAS309F – APR IL 2005 – REVISED JANUARY 2014 ADC08 1S051 Single Channel, 200 to 500 ksps, 8-Bit A/D Converter Check for Samples: ADC081S051 FEATURES 1 •2 Specified O ver a Range of Sample Rates • 6-lead WSON and SOT-23 Packages • Variable P ower Management • Single Power Supply with 2.7V - 5.25V Range • SPI™/QSP I™/MICROWIRE/DSP Compatible KEY SPECI FICATIONS • DNL: +0.06 / -0.045 LSB ( Typ) • INL: +0.06 / -0.05 LSB (Typ) SNR: 49.6 dB (Typ) • Power Consump tion: – 3.6V Supply: 1.6 mW (Typ) – 5.25V Supply: 8.5 mW (Typ) APPLICATION S • Portable Systems • Remote Data Acquisition • Instrumentation and Con trol Systems DESCRIPTION The ADC081S05 1 is a low-power, single channel CMOS 8 -bit analog-to-digital converter with a highspeed serial interface. Unlike the conventional practice of specifying pe rformance at a single sample rate only, the ADC081S051 is fully specified over a sample rate range of 200 ksps to 500 ksps. The converter is based on a successive-approximation .
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