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Numéro de référence | ADC12281 | ||
Description | 12-Bit/ 20 MSPS Single-Ended Input/ Pipelined A/D Converter | ||
Fabricant | National Semiconductor | ||
Logo | |||
1 Page
March 2000
ADC12281
12-Bit, 20 MSPS Single-Ended Input, Pipelined A/D
Converter
General Description
The ADC12281 is a monolithic CMOS analog-to-digital con-
verter capable of converting analog input signals into 12-bit
digital words at 20 megasamples per second (MSPS). It uti-
lizes a pipeline architecture to minimize die size and power
dissipation. Self-calibration and error correction maintain ac-
curacy and performance over temperature.
The ADC12281 operates on a 5V power supply and can digi-
tize single-ended analog input signals in the range of 0V to
2V. A single convert clock controls the conversion operation
and all digital I/O is TTL compatible.
The ADC12881 is designed to minimize external compo-
nents necessary for the analog input interface. An internal
sample-and-hold circuit samples the single-ended analog in-
put and an internal amplifier buffers the reference voltage in-
put.
The Power Down feature reduces power consumption to
20 mW, typical.
The ADC12281 is available in the 32-lead TQFP package
and is designed to operate over the industrial temperature
range of −40˚C to +85˚C.
Features
n Single 5V power supply
n Single-ended analog input
n Internal sample-and-hold
n Internal reference buffer amplifier
n Low offset and gain errors
Key Specifications
n Resolution
n Conversion rate
n DNL
n SNR
n ENOB
n Analog input range
n Supply voltage
n Power consumption, 20 MHz
Applications
n Digital signal processing front end
n Digital television
n Radar
n High speed data links
n Waveform digitizers
n Quadrature demodulation
12 bits
up to 20 MSPS
0.35 LSB (typ)
65.5 dB (typ)
10.5 bits (typ)
2 VPP (min)
+5V ±5%
443 mW (typ)
Connection Diagram
DS101027-1
32-Lead TQFP Package
Order Number ADC12281CIVT
See NS Package Number VBE32A
TRI-STATE® is a registered trademark of National Semiconductor Corporation.
© 2000 National Semiconductor Corporation DS101027
www.national.com
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Pages | Pages 16 | ||
Télécharger | [ ADC12281 ] |
No | Description détaillée | Fabricant |
ADC12281 | 12-Bit/ 20 MSPS Single-Ended Input/ Pipelined A/D Converter | National Semiconductor |
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ADC12281CIVT | 12-Bit/ 20 MSPS Single-Ended Input/ Pipelined A/D Converter | National Semiconductor |
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