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NAD1220-25 Datasheet

  • NAD1220-25

  • 12-Bit 20MSPS Sampling Analog-to-Digital Converter IP in 0.2...

  • 107.26KB

  • 11頁

  • ETC

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PRELIMINARY PRODUCT SPECIFICATION
12-Bit 20MSPS Sampling
Analog-to-Digital Converter IP
FEATURES
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2.5V power supply
SNR typ 63dB for (f
in
= 10MHz)
Low power (55mW@2.5V)
Sample rate:10 - 20MSPS
Frequency dependent biasing
Internal/sample hold
Differential input
Low input capacitance
Evaluation Board Available
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nAD1220-25
APPLICATIONS
Imaging
Test equipment
Computer scanners
Communications
Set top boxes
Video products
GENERAL DESCRIPTION
The nAD1220-25 is a compact, high-speed, low power 12-bit monolithic analog-to-
digital converter, implemented in the TSMC Mixed-Signal MiM CMOS process. It
has 12-bit resolution with more than 10 effective bits, and close to 11 bit dynamic
range for video frequency signals. The converter includes a high bandwidth sample
and hold. The full scale range is
鹵1V.
The full scale range can be set between
鹵0.5V
and
鹵1V.
It operates from a single 2.5V supply. 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
P
D
DNL
INL
f
S
N
Parameter
supply voltage
supply current
(20 MSPS)
power dissipation
(20 MSPS)
power dissipation
(10 MSPS)
power dissipation
(sleep mode)
differential nonlinearity
integral nonlinearity
conversion rate
resolution
Conditions
Min.
2.25
Typ.
2.5
22
55
30
1.5
Max.
2.75
Unit
V
mA
mW
mW
mW
Except digital
output drivers
Except digital
output drivers
Except digital
output drivers
f
IN
=0.9991MHz
f
IN
=0.9991MHz
10
鹵1
鹵3
20
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: 1.1
Page 1 of 11
September 4th, 2001

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