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ADC102S021_14

更新时间： 2024-11-19 02:58:27
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德州仪器 - TI /
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25页 1337K
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ADC102S021 2 Channel, 50 ksps to 200 ksps, 10-Bit A/D Converter

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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  
1
FEATURES  
DESCRIPTION  
The ADC102S021 is  
a low-power, two-channel  
2
•
•
•
•
Specified Over a Range of Sample Rates.  
Two Input Channels  
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.  
Variable Power Management  
Single Power Supply with 2.7V - 5.25V Range  
APPLICATIONS  
•
•
•
Portable Systems  
Remote Data Acquisition  
Instrumentation and Control Systems  
The output serial data is straight binary, and is  
compatible with several standards, such as SPI™,  
QSPI™, MICROWIRE, and many common DSP  
serial interfaces.  
KEY SPECIFICATIONS  
•
•
•
•
DNL: ± 0.13 LSB (typ)  
INL: ± 0.13 LSB (typ)  
SNR: 61.8 dB (typ)  
Power Consumption  
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.  
–
–
3V Supply: 1.94mW (typ)  
5V Supply: 6.9 mW (typ)  
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)  
Specified for Sample Rates of:  
Resolution  
50 to 200 ksps  
ADC122S021  
ADC102S021  
ADC082S021  
200 to 500 ksps  
ADC122S051  
ADC102S051  
ADC082S051  
500 ksps to 1Msps  
ADC122S101  
12-bit  
10-bit  
8-bit  
ADC102S101  
ADC082S101  
(1) All devices are fully pin and function compatible.  
Connection Diagram  
8
7
6
5
CS  
1
2
3
4
SCLK  
DOUT  
DIN  
V
A
ADC102S021  
GND  
IN2  
IN1  
Figure 1. VSSOP Package  
See Package Number DGK0008A  
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  
1234567...25

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