CA3304M Intersil Corporation, CA3304M Datasheet

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CA3304M

Manufacturer Part Number
CA3304M
Description
Manufacturer
Intersil Corporation
Datasheet

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August 1997
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright © Intersil Corporation 1999
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
• 4-Bit Latched Three-State Output with Overflow and
• 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
Ordering Information
Pinout
CA3304E
CA3304AE
CA3304M
CA3304AM
CA3304D
CA3304AD
PART NUMBER LINEARITY (INL, DNL)
Supply
Data Change Outputs
1
/
8
LSB Maximum Nonlinearity (A Version)
0.125 LSB
0.125 LSB
0.125 LSB
0.25 LSB
0.25 LSB
0.25 LSB
DATA CHANGE (DC)
OVERFLOW (OF)
BIT 1 (LSB)
SAMPLING RATE
25MHZ (40ns)
25MHz (40ns)
25MHz (40ns)
25MHz (40ns)
25MHz (40ns)
25MHz (40ns)
BIT 2
BIT 3
BIT 4
CE2
V
CA3304 (SBDIP, PDIP, SOIC)
CA3304, CA3304A
SS
1
2
3
4
5
6
7
8
TOP VIEW
4-7
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.
TEMP. RANGE (
16
15
14
13
12
11
10
9
-55 to 125
-55 to 125
-40 to 85
-40 to 85
-40 to 85
-40 to 85
V
CLK
V
V
V
V
V
CE1
AA
AA
DD
REF
REF
IN
-
+
-
+
o
C)
16 Ld PDIP
16 Ld PDIP
16 Ld SOIC (W)
16 Ld SOIC (W)
16 Ld SBDIP
16 Ld SBDIP
Flash A/D Converters
PACKAGE
4-Bit, 25 MSPS,
File Number
E16.3
E16.3
M16.3
M16.3
D16.3
D16.3
PKG. NO.
1790.2

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CA3304M Summary of contents

Page 1

... Radar Pulse Analysis • Motion Signature Analysis • Robot Vision • RSSI Circuits Ordering Information PART NUMBER LINEARITY (INL, DNL) CA3304E 0.25 LSB CA3304AE 0.125 LSB CA3304M 0.25 LSB CA3304AM 0.125 LSB CA3304D 0.25 LSB CA3304AD 0.125 LSB Pinout DATA CHANGE (DC) CAUTION: These devices are sensitive to electrostatic discharge ...

Page 2

... Operating Temperature CA3304D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 CA3304E, CA3304M -40 CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. ...

Page 3

Electrical Specifications Unless Otherwise Specified (Continued) PARAMETER Allowable Input Bandwidth -3dB Input Bandwidth REFERENCE INPUTS Input Range V + Range REF V - Range REF Input Loading Resistor Ladder Impedance DIGITAL INPUTS Digital Input Maximum V ...

Page 4

Pin Descriptions PIN NUMBER NAME 1 Bit 1 2 Bit 2 3 Bit 3 4 Bit CE2 CE1 REF 13 V REF ...

Page 5

Functional Diagram CAB #16 † REF R † CAB # REF CAB COMPARATOR #1 † 50k CLOCK ...

Page 6

Timing Diagrams (Continued) SAMPLE ENDS 1 2 CLOCK t D OUTPUT OLD DATA FIGURE 3A. With 2 as standby state (fastest method, but standby limited maximum) CLOCK OUTPUT With 2 as standby state (indefinite standby, lower power ...

Page 7

Typical Performance Curves 0.25 0.22 0.20 0.17 0.15 0.12 0.10 0.07 0.05 0.02 0.00 -40 -30 -20 - TEMPERATURE ( FIGURE 6. NON-LINEARITY vs TEMPERATURE 0.50 0.45 0.40 0.35 0.30 0.25 0.20 0.15 0.10 0.05 ...

Page 8

Typical Performance Curves 2V REFERENCE REMOTE 2V INTO 50 SOURCE FIGURE 12A. TYPICAL CA3304 UNIPOLAR CIRCUIT CONFIGURATION +1V REFERENCE REMOTE 1V INTO 50 SOURCE ANALOG GROUND FIGURE 12B. TYPICAL CA3304 BIPOLAR CIRCUIT CONFIGURATION CA3304, CA3304A (Continued) 27 CA3304 V + ...

Page 9

Description Device Operation A sequential parallel technique is used by the CA3304 converter to obtain its high speed operation. The sequence consists of the “Auto Balance” phase and the “Sample Unknown” phase (Refer to the circuit diagram). Each conversion takes ...

Page 10

Offset Trim In general offset correction can be done in the preamp circuitry by introducing a DC shift the op amp. When this is not possible the V be adjusted to produce an offset trim. The theoretical ...

Page 11

... All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification. Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use ...

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