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nAD1280-18T
APPLICATIONS
Imaging
Test equipment
Computer scanners
Wireless communication
Powerline communication
Set top boxes
Video products
GENERAL DESCRIPTION
The nAD1280-18T is a compact, high-speed, low power 12-bit monolithic analog-to-
digital converter, implemented in a 0.18碌m single poly CMOS process with MiM
capacitors and thick oxide transistor option. It has 12-bit resolution with 11 effective
bits at low input frequencies, and close to 12 bit dynamic range for video frequency
signals. The converter includes a high bandwidth track and hold. Using internal
references, the full scale range is
鹵1V.
The full scale range can be set between
鹵0.75V
and
鹵1.0V
using external references. It operates from a single 3.3V supply,
while I/O is biased with 1.8V. Its low distortion and high dynamic range offers the
performance needed for demanding imaging, multimedia, telecommunications and
instrumentation applications. The bias current level for the ADC is automatically
adjusted based on the clock input frequency. Hence, the power dissipation of the
device is continuously minimised for the current operation frequency.
QUICK REFERENCE DATA
Symbol
V
DD
I
DD
P
D
P
D
DNL
INL
f
S
N
Parameter
Supply voltage
Supply current (80 MSPS)
Power dissipation (15
MSPS)
Power dissipation (80
MSPS)
Differential nonlinearity
Integral nonlinearity
Conversion rate
Resolution
Conditions
Except digital output
drivers
Except digital output
drivers
f
IN
=0.9991MHz
f
IN
=0.9991MHz
Min.
2.97
Typ.
3.3
107
80
353
Max.
3.63
Unit
V
mA
mW
mW
鹵0.5
鹵1.0
80
12
LSB
LSB
MHz
bit
Table 1. Quick reference data
Main office: Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Fax +4772898989
Revision: 1.3
Page 1 of 11
September 11
th
, 2001