A/D Converter. ADC084S101 Datasheet

ADC084S101 Converter. Datasheet pdf. Equivalent

Part ADC084S101
Description 8-Bit A/D Converter
Feature ADC084S101 www.ti.com SNAS285D – APRIL 2005 – REVISED MARCH 2013 ADC084S101 4 Channel, 500 ksps t.
Manufacture etcTI
Datasheet
Download ADC084S101 Datasheet



ADC084S101
ADC084S101
www.ti.com
SNAS285D – APRIL 2005 – REVISED MARCH 2013
ADC084S101 4 Channel, 500 ksps to 1 Msps, 8-Bit A/D Converter
Check for Samples: ADC084S101
FEATURES
1
2 Specified Over a Range of Sample Rates
• Four Input Channels
• Variable Power Management
• Single Power Supply with 2.7V - 5.25V Range
KEY SPECIFICATIONS
• DNL: ±0.10 LSB (Typ)
• INL: ± 0.13 LSB (Typ)
• SNR: 49.6 dB (Typ)
• Power Consumption:
– 3V Supply: 3.2 mW (Typ)
– 5V Supply: 9.6 mW (Typ)
APPLICATIONS
• Portable Systems
• Remote Data Acquisition
• Instrumentation and Control Systems
DESCRIPTION
The ADC084S101 is a low-power, four-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 ADC084S101 is fully specified over a
sample rate range of 500 ksps to 1 Msps. The
converter is based on a successive-approximation
register architecture with an internal track-and-hold
circuit. It can be configured to accept up to four input
signals at inputs IN1 through IN4.
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 ADC084S101 operates with a single supply, that
can range from +2.7V to +5.25V. Normal power
consumption using a +3V or +5V supply is 3.2 mW
and 9.6 mW, respectively. The power-down feature
reduces the power consumption to just 0.12 µW using
a +3V supply, or 0.35 µW using a +5V supply.
The ADC084S101 is packaged in a 10-lead VSSOP
package. 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
ADC124S021
ADC104S021
ADC084S021
Specified for Sample Rate Range of:
200 to 500 ksps
ADC124S051
ADC104S051
ADC084S051
500 ksps to 1 Msps
ADC124S101
ADC104S101
ADC084S101
(1) All devices are fully pin and function compatible.
Connection Diagram
CS
VA
GND
IN4
IN3
1
10
2
9
3 ADC084S101 8
4
7
5
6
SCLK
DOUT
DIN
IN1
IN2
Figure 1. 10-Lead VSSOP
See DGS 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 © 2005–2013, Texas Instruments Incorporated



ADC084S101
ADC084S101
SNAS285D – APRIL 2005 – REVISED MARCH 2013
Block Diagram
IN1
.
.
MUX
.
IN4
www.ti.com
T/H
GND
8-Bit
SUCCESSIVE
APPROXIMATION
ADC
VA
GND
CONTROL
LOGIC
SCLK
CS
DIN
DOUT
Pin No.
ANALOG I/O
4-7
DIGITAL I/O
10
9
8
1
POWER SUPPLY
2
3
PIN DESCRIPTIONS and EQUIVALENT CIRCUITS
Symbol
Description
IN1 to IN4
SCLK
DOUT
DIN
CS
Analog inputs. These signals 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.
Digital data input. The ADC084S101's Control Register is loaded through this pin on rising
edges of the SCLK pin.
Chip select. On the falling edge of CS, a conversion process begins. Conversions continue
as long as CS is held low.
VA
GND
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 supply and signals.
2
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