Features: · Specified over a range of sample rates.
· Two input channels
· Variable power management
· Single power supply with 2.7V - 5.25V range
Application· Portable Systems
· Remote Data Acquisition
· Instrumentation and Control Systems
Pinout
SpecificationsIf Military/Aerospace specified devices are required, pleasecontacttheNationalSemiconductorSalesOffice/Distributors for availability and specifications.
Analog Supply Voltage VA ..........................-0.3V to 6.5V
Voltage on Any Pin to GND .................-0.3V to VA +0.3V
Input Current at Any Pin (Note 3) ......................±10 mA
Package Input Current (Note 3) .........................±20 mA
Power Consumption at TA = 25 ...............See (Note 4)
ESD Susceptibility ..............................................(Note 5)
Human Body Model ...............................................2500V
Machine Model ........................................................250V
Junction Temperature ..........................................+150
Storage Temperature .............................-65 to +150
| Pin and Function Compatible Family |
2 ch, MSOP-8 |
| Resolution |
10 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 |
0.12 uW |
| Operating Power, typ at 3.6V, max ksps |
0.013 mW |
| Operating Power, 3.6V, 1ksps, max. PwrDn |
1.9 mW |
| PowerWise Rating 1 |
5.08 pJ/conv |
| INL (LSB) |
+/-0.13 |
| DNL (LSB) |
+/-0.13 |
| ENOB |
9.9 bits |
| SINAD |
61.8 dB |
| SNR |
61.8 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 |
| PowerWise |
Yes |
| View Using Catalog |
DescriptionThe ADC122S101 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, theADC122S101 is fully speci-fied 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 one or two input signals at inputs IN1 and IN2.
The output serial data of ADC122S101 is straight binary, and is compatible with several standards, such as SPI(TM), QSPI(TM), MICROW-IRE, and many common DSP serial interfaces.
The ADC122S101 operates with a single supply that can range from +2.7V to +5.25V. Normal power consumption using a +3V or +5V supply is 4.3 mW and 13.1 mW, respec-tively.The power-down feature reduces the power consump-tion to just 0.14 W using a +3V supply, or 0.32 W using a +5V supply.
TheADC122S101 is packaged in an 8-lead MSOPpackage.
Operation over the industrial temperature range of -40 to +85 is guaranteed.
ADC102S021 Data Sheet
