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CA3304A Datenblatt(PDF) 1 Page - Intersil Corporation

Teilenummer CA3304A
Bauteilbeschribung  4-Bit, 25 MSPS, Flash A/D Converters
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Hersteller  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

CA3304A Datenblatt(HTML) 1 Page - Intersil Corporation

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1
®
November 2002
CA3304, CA3304A
4-Bit, 25 MSPS,
Flash A/D Converters
Features
• CMOS/SOS Low Power with Video Speed (Typ) . . 25mW
• Parallel Conversion Technique
• Single Power Supply Voltage . . . . . . . . . . . 3V to 7.5V
• 25MHz Sampling Rate (40ns Conversion Time) at 5V
Supply
• 4-Bit Latched Three-State Output with Overflow and
Data Change Outputs
1/8 LSB Maximum Nonlinearity (A Version)
• Inherent Resistance to Latch-Up Due to SOS Process
• Bipolar Input Range with Optional Second Supply
• Wide Input Bandwidth (Typ) . . . . . . . . . . . . . . . . 25MHz
Applications
• High Speed A/D Conversion
• Ultrasound Signature Analysis
• Transient Signal Analysis
• High Energy Physics Research
• General-Purpose Hybrid ADCs
• Optical Character Recognition
• Radar Pulse Analysis
• Motion Signature Analysis
• Robot Vision
• RSSI Circuits
Description
The Intersil CA3304 is a CMOS parallel (FLASH) analog-to-
digital converter designed for applications demanding both
low-power consumption and high speed digitization. Digitiz-
ing at 25MHz, for example, requires only about 35mW.
The CA3304 operates over a wide, full-scale signal input
voltage range of 0.5V up to the supply voltage. Power
consumption is as low as 10mW, depending upon the clock
frequency selected.
The intrinsic high conversion rate makes the CA3304 types
ideally suited for digitizing high speed signals. The overflow
bit makes possible the connection of two or more CA3304s
in series to increase the resolution of the conversion system.
A series connection of two CA3304s may be used to pro-
duce a 5-bit, 25MHz converter. Operation of two CA3304s in
parallel doubles the conversion speed (i.e., increases the
sampling rate from 25MHz to 50MHz). A data change pin
indicates when the present output differs from the previous,
thus allowing compaction of data storage.
Sixteen paralleled auto-balanced voltage comparators mea-
sure the input voltage with respect to a known reference to
produce the parallel-bit outputs in the CA3304. Fifteen com-
parators are required to quantize all input voltage levels in this
4-bit converter, and the additional comparator is required for
the overflow bit.
Part Number Information
Pinout
CA3304 (SBDIP, PDIP, SOIC)
TOP VIEW
PART NUMBER LINEARITY (INL, DNL)
SAMPLING RATE
TEMP. RANGE (oC)
PACKAGE
PKG. NO.
CA3304E
±0.25 LSB
25MHz (40ns)
-40 to 85
16 Ld PDIP
E16.3
CA3304AE
±0.125 LSB
25MHz (40ns)
-40 to 85
16 Ld PDIP
E16.3
CA3304M
±0.25 LSB
25MHz (40ns)
-40 to 85
16 Ld SOIC (W)
M16.3
CA3304AM
±0.125 LSB
25MHZ (40ns)
-40 to 85
16 Ld SOIC (W)
M16.3
CA3304D
±0.25 LSB
25MHz (40ns)
-55 to 125
16 Ld SBDIP
D16.3
CA3304AD
±0.125 LSB
25MHz (40ns)
-55 to 125
16 Ld SBDIP
D16.3
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
BIT 1 (LSB)
BIT 2
BIT 3
BIT 4
DATA CHANGE (DC)
OVERFLOW (OF)
VSS
CE2
VDD
VAA-
VREF-
VREF+
VIN
VAA+
CE1
CLK
FN1790.3
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
| Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2002. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
FOR A
POSS
IBLE S
UBST
ITUTE
PROD
UCT
conta
ct our
Techn
ical Su
pport
Cente
r at
1-888-
INTER
SIL or
www.i
ntersi
l.com/
tsc
OBSO
LETE
PROD
UCT


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