ADC122S021 - 2 Channel, 50 ksps to 200 ksps 12-Bit A/D Converter from the PowerWise® Family
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Features
Specified over a range of sample rates.
Two input channels
Variable power management
Single power supply with 2.7V - 5.25V range

Key Specification


DNL

+0.4 / −0.2 LSB (typ)

INL

± 0.35 LSB (typ)

SNR

72.0 dB (typ)

Power Consumption

3V Supply

2.2 mW (typ)

5V Supply

7.9 mW (typ)

General Description


The ADC122S021 is a low-power, two-channel CMOS 12-bit analog-to-digital converter with a high-speed serial interface. More...


Applications


Portable Systems
Remote Data Acquisition
Instrumentation and Control Systems
  Typical Application
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ParametersValues
Pin and Function Compatible Family 2 ch, MSOP-8
Resolution 12 bits
Input Channels 2
Sample Rate Range (sps) 50k to 200k
Interface Type SPI / QSPI / Microwire
Differential Input No
Power Down, typ. at 3.6V 0.14 uW
Operating Power, typ at 3.6V, max ksps 0.018 mW
Operating Power, 3.6V, 1ksps, max. PwrDn 2.2 mW
PowerWise Rating 1 1.65 pJ/conv
INL (LSB) +/-0.35
DNL (LSB) +0.4; -0.2
ENOB 11.7 bits
SINAD 72 dB
SNR 72 dB
Max KSample Rate 200 ksps
Min Supply Voltage 2.7 Volt
Max Supply Voltage 5.25 Volt
Reference Source Supply
Temperature Min -40 deg C
Temperature Max 85 deg C
Power Down Yes
Input Sample/Hold Yes
Special Features Undefined
Data Converter Type ADC
Max Sample Rate 0.2 MSPS
Automotive Yes
PowerWise Yes


Typical Performance


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  WEBENCH Live Simulation!
ADC122S021 Webench® Custom
Design/Analyze/Build It
ADC Parameters
ADC and Op Amp Supply voltage:
5 V 3.3 V
help
Sample Rate
Sample Rate per channel ksps help
Operating Conditions
Min. Ambient Temperature degC help
Nominal Ambient Temperature degC help
Max. Ambient Temperature degC help

Also Recommended
ADC082S021For 8 Bits
ADC102S021For 10 Bits
ADC122S051For Speeds From 200Ksps To 500Ksps
ADC122S101For Speeds From 500Ksps To 1Msps
Additional Resources
Design Tools


Block Diagram


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Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
ADC122S021 2 Channel, 50 ksps to 200 ksps 12-Bit A/D Converter 431
Kbytes
1-Aug-08 Download
ADC122S021 2 Channel, 50 ksps to 200 ksps 12-Bit A/D Converter (Japanese)
719 Kbytes   Download

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Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders
Budgetary PricingStd
Pack
Size
Package
Marking
Format
TypePinsSpec.MSL
Rating
Peak
Reflow
RoHS
Report
CAD
Symbols
WeeksQtyQty$US each
ADC122S021EVAL2 Channel, 200 KSPS 12-Bit A/D ConverterFull productionN/A
 
Buy Now
1+$120.001-
8 weeksN/A
ADC122S021CIMMMINI SOIC8NOPB1260RoHS Download Full productionN/A
Samples
Buy Now
1K+$1.45reel
of
1000
ZXTT
X18C
6 weeks2000
ADC122S021CIMMXMINI SOIC8NOPB1260RoHS Download Full productionN/A
 
Buy Now
1K+$1.45reel
of
3500
ZXTT
X18C
16 weeksN/A

General Description


The ADC122S021 is a low-power, two-channel CMOS 12-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 ADC122S021 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 ADC122S021 operates with a single supply that can range from +2.7V to +5.25V. Normal power consumption using a +3V or +5V supply is 2.2 mW and 7.9 mW, respectively. The power-down feature reduces the power consumption to just 0.14 µW using a +3V supply, or 0.32 µW using a +5V supply.

The ADC122S021 is packaged in an 8-lead MSOP package. Operation over the industrial temperature range of −40°C to +85°C is guaranteed.

Reliability Metrics


Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
ADC122S021CIMMCMOS70184060010890004309006723
ADC122S021CIMMXCMOS70184060010890004309006723

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


Design Tools


TitleSize in Kbytes Date Click link below to Download    
Evaluation Boards & Development Systems     View    

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[Information as of 8-Nov-2009]