Rainbow Electronics ADC12L080 - Manual

ADC12L080
12-Bit, 80 MSPS, 450 MHz Bandwidth A/D Converter with
Internal Reference
General Description
The ADC12L080 is a monolithic CMOS analog-to-digital con-
verter capable of converting analog input signals into 12-bit
digital words at 80 Megasamples per second (MSPS). This
converter uses a differential, pipeline architecture with digital
error correction and an on-chip sample-and-hold circuit to
minimize die size and power consumption while providing
excellent dynamic performance. The ADC12L080 can be
operated with either the internal or an external reference.
Operating on a single 3.3V power supply, this device con-
sumes just 425 mW at 80 MSPS, including the reference
current. The Power Down feature reduces power consump-
tion to just 50 mW.
The differential inputs provide a full scale input swing equal
to
± V
REF
. The buffered, high impedance, single-ended ex-
ternal reference input is converted on-chip to a differential
reference for use by the processing circuitry. Output data
format may be selected as either offset binary or two’s
complement.
This device is available in the 32-lead LQFP package and
operates over the industrial temperature range of −40˚C to
+85˚C.
Features
n Single supply operation
n Low power consumption
n Power down mode
n Internal or external reference
n Selectable Offset Binary or 2’s Complement data format
n Pin-compatible with ADC12010, ADC12020, ADC12040,
ADC12L063, ADC12L066
Key Specifications
n Full Power Bandwidth 450 MHz
n DNL ± 0.4 LSB (typ)
n SNR (f
IN
= 10 MHz) 66 dB (typ)
n SFDR (f
IN
= 10 MHz) 80 dB (typ)
n Power Consumption, 80 MHz
— Operating 425 mW (typ)
— Power Down 50 mW (typ)
Applications
n Ultrasound and Imaging
n Instrumentation
n Cellular Base Stations/Communication Receivers
n Sonar/Radar
n xDSL
n Wireless Local Loops
n Data Acquisition Systems
n DSP Front Ends
Connection Diagram
20061001
TRI-STATE ® is a registered trademark of National Semiconductor Corporation.
October 2004
ADC12L080
12-Bit,
80
MSPS,
450
MHz
Bandwidth
A/D
Converter
with
Internal
Reference
© 2004 National Semiconductor Corporation DS200610 www.national.com