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ADC12020CIVY
12-Bit, 20 MSPS, 185mW A/D Converter with Internal Sample-and-Hold
ADC12020
12-Bit, 20 MSPS, 185 mW A/D Converter with Internal
Sample-and-Hold
General DescriptionThe ADC12020isa monolithic CMOS analog-to-digital con-
verter capableof converting analog input signals into 12-bit
digital wordsat20 Megasamples per second (MSPS), mini-
mum. This converter usesa differential, pipeline architecture
with digital error correction andan on-chip sample-and-hold
circuitto minimize die size and power consumption while
providing excellent dynamic performance. Operatingona
single5V power supply, this device consumes just 185 mW20 MSPS, including the reference current. The Power
Down feature reduces power consumptionto40 mW.
The differential inputs provideafull scale input swing equal 2VREF withthe possibilityofa single-ended input. Full usethe differential inputis recommendedfor optimum perfor-
mance. For easeof use, the buffered, high impedance,
single-ended reference inputis converted on-chiptoa differ-
ential referencefor useby the processing circuitry. Output
data formatis 12-bit offset binary.
This deviceis availablein the 32-lead LQFP package and
willoperate overthe industrial temperature rangeof −40˚Cto
+85˚C.
Features Internal sample-and-hold Outputs 2.5Vto5V compatible TTL/CMOS compatible input/outputs Power down mode On-chip reference buffer
Key Specifications Resolution 12 Bits Conversion Rate 20 MSPS (min) DNL ±0.35 LSB (typ) INL ±0.55 LSB (typ) SNR(fIN= 10.1 MHz) 70dB (typ) ENOB(fIN= 10.1 MHz) 11.3 bits (typ) Data Latency 6 Clock Cycles Supply Voltage +5V ±5% Power Consumption,20 MHz 185 mW (typ)
Applications Image Processing Front End Instrumentation PC-Based Data Acquisition Fax Machines Waveform Digitizers Sonar/Radar DSP Front Ends
Connection DiagramApril 2003
ADC12020
12-Bit,
MSPS,
A/D
Converter
with
Internal
Sample-and-Hold
