ADC102S021CIMM Datasheet, PDF (1/25 Pages) Texas Instruments – ADC102S021 2 Channel, 50 ksps to 200 ksps, 10-Bit A/D Converter

ADC102S021
www.ti.com
SNAS281G – FEBRUARY 2005 – REVISED MARCH 2013
ADC102S021 2 Channel, 50 ksps to 200 ksps, 10-Bit A/D Converter
Check for Samples: ADC102S021
FEATURES
1
•2 Specified Over a Range of Sample Rates.
• Two Input Channels
• Variable Power Management
• Single Power Supply with 2.7V - 5.25V Range
APPLICATIONS
• Portable Systems
• Remote Data Acquisition
• Instrumentation and Control Systems
KEY SPECIFICATIONS
• DNL: ± 0.13 LSB (typ)
• INL: ± 0.13 LSB (typ)
• SNR: 61.8 dB (typ)
• Power Consumption
– 3V Supply: 1.94mW (typ)
– 5V Supply: 6.9 mW (typ)
DESCRIPTION
The ADC102S021 is a low-power, two-channel
CMOS 10-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 ADC102S021 is fully specified over a
sample rate range of 50 ksps to 200 ksps. The
converter is based on a successive-approximation
register architecture with an internal track-and-hold
circuit. It can be configured to accept one or two input
signals at inputs IN1 and IN2.
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 ADC102S021 operates with a single supply that
can range from +2.7V to +5.25V. Normal power
consumption using a +3V or +5V supply is 1.94 mW
and 6.9 mW, respectively. The power-down feature
reduces the power consumption to just 0.12 µW using
a +3V supply, or 0.47 µW using a +5V supply.
The ADC102S021 is packaged in an 8-lead VSSOP
package. Operation is specified over the industrial
temperature range of −40°C to +85°C.
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Table 1. Pin-Compatible Alternatives by Resolution and Speed⁽¹⁾
Resolution
12-bit
10-bit
8-bit
50 to 200 ksps
ADC122S021
ADC102S021
ADC082S021
Specified for Sample Rates of:
200 to 500 ksps
ADC122S051
ADC102S051
ADC082S051
500 ksps to 1Msps
ADC122S101
ADC102S101
ADC082S101
(1) All devices are fully pin and function compatible.
Connection Diagram
CS
V_A
GND
IN2
1
8
2
7
ADC102S021
3
6
4
5
SCLK
DOUT
DIN
IN1
Figure 1. VSSOP Package
See Package Number DGK0008A
1
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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