CDK1303 Cadeka Microcircuits LLC., CDK1303 Datasheet

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CDK1303

Manufacturer Part Number
CDK1303
Description
8-bit, 1 Gsps, Flash A/d Converter
Manufacturer
Cadeka Microcircuits LLC.
Datasheet
Data Sheet
CDK1303
8-bit, 1 GSPS, Flash A/D Converter
Block Diagram
Ordering Information
Moisture sensitivity level for all parts is MSL-1.
©2008 CADEKA Microcircuits LLC
Part Number
CDK1303AEMQ80
CDK1303AEMQ80_Q
CDK1303BEMQ80
CDK1303BEMQ80_Q
f e a t u r e s
n
n
n
n
n
a p p l i c a t i o n s
n
n
n
n
1:2 Demuxed ECL compatible outputs
Wide input bandwidth – 900MHz
Low input capacitance – 15pF
Metastable errors reduced to 1 LSB
Gray code output
Digital oscilloscopes
Transient capture
Radar, EW, and ECM
Direct RF down-conversion
Package
MQUAD-80
MQUAD-80
MQUAD-80
MQUAD-80
Pb-Free
Yes
No
Yes
No
General Description
The CDK1303 is a full parallel (flash) analog-to-digital converter capable
of digitizing full scale (0 to -2V) inputs into eight-bit digital words at an
update rate of 1 GSPS. The ECL-compatible outputs are demultiplexed into
two separate output banks, each with differential data ready outputs to ease
the task of data capture. The CDK1303’s wide input bandwidth and low
capacitance eliminate the need for external track-and-hold amplifiers for most
applications. A proprietary decoding scheme reduces metastable errors to the
1 LSB level. The CDK1303 operates from a single -5.2V supply, with a nominal
power dissipation of 5.5W.
The CDK1303 is available in an 80-lead surface-mount MQUAD package over
the industrial temperature range (-25°C to +85°C).
RoHS Compliant
Yes
No
Yes
No
Operating Temperature Range
-25°C to +85°C
-25°C to +85°C
-25°C to +85°C
-25°C to +85°C
A m p l i fy t h e H u m a n E x p e r i e n c e
Packaging Method
Rail
Rail
Rail
Rail
www.cadeka.com

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CDK1303 Summary of contents

Page 1

... The CDK1303’s wide input bandwidth and low capacitance eliminate the need for external track-and-hold amplifiers for most applications. A proprietary decoding scheme reduces metastable errors to the 1 LSB level. The CDK1303 operates from a single -5.2V supply, with a nominal power dissipation of 5.5W. The CDK1303 is available in an 80-lead surface-mount MQUAD package over the industrial temperature range (-25° ...

Page 2

... Data Sheet Pin Configuration MQUAD-80 CDK1303 Pin Assignments Pin Name Description V Negative Supply Nominally -5.2V EE AGND Analog Ground V Reference Voltage Force Top, Nominally 0V RTF V Reference Voltage Sense Top RTS V Reference Voltage Middle, Nominally - Reference Voltage Force Bottom, Nominally -2V RBF V Reference Voltage Sense Bottom ...

Page 3

Data Sheet Absolute Maximum Ratings The safety of the device is not guaranteed when it is operated above the “Absolute Maximum Ratings”. The device should not be operated at these “absolute” limits. Adhere to the “Recommended Operating Conditions” for proper ...

Page 4

... IN ƒ = 50MHz -44 (1) IN ƒ = 250MHz -36 (1) IN ƒ = 50MHz 47 (1) IN ƒ = 250MHz 39 (1) IN ƒ = 50MHz 42 (1) IN ƒ = 250MHz 35 ( 1GHz, Duty Cycle=50%, CLK cDK1303B Max Min typ Max 8 +0.95 -0.95 +1.5 +1.0 -1.5 +1.5 Guaranteed 2.0 0.75 2 900 500 +30 -30 +30 +30 -30 + ...

Page 5

... Typical Thermal Impedance: θ = +4°C/W. JC ©2008 CADEKA Microcircuits LLC = -2.0V -1.0V 0.00V, ƒ cDK1303a conditions Min typ CLK, CLK -1.1 -0.7 CLK, CLK -1.8 0.5 0.4 0.5 0.4 -1.1 -0.9 -1.8 20% to 80% 450 20% to 80% 450 -4.95 -5 1.05 IN 5.5 = 1GHz, Duty Cycle=50%, CLK cDK1303B Max Min typ Max -1.1 -0.7 -1.5 -1.8 -1.5 0.5 0.4 0.5 0.4 -1.1 -0.9 -1.5 -1.8 -1.5 450 450 -5.45 -4.95 -5.2 -5.45 1.2 1.05 1.2 6.25 5.5 6.25 www.cadeka.com units ...

Page 6

... Data Sheet General Description The CDK1303 is one of the fastest monolithic 8-bit parallel flash A/D converters available today. The nominal conversion rate is 1 GSPS and the analog bandwidth is in excess of 900MHz. A major advance over previous flash converters is the inclusion of 256 input preamplifiers between the reference ladder and input comparators (see block diagram) ...

Page 7

... The pins can also be tied together and driven by the same source. The CDK1303 is superior to similar devices due to a preamplifier stage before the com- parators. This makes the device easier to drive because it has constant capacitance and induces less slew rate distortion ...

Page 8

... Data Sheet Operation The CDK1303 has 256 preamp/comparator pairs which are each supplied with the voltage from V equally by the resistive ladder as shown in the block diagram. This voltage is applied to the positive input of each preamplifier/comparator pair. An analog input volt- age applied connected to the negative inputs of IN each preamplifier/comparator pair ...

Page 9

... CADEKA; nor does the purchase, lease, or use of a product or service from CADEKA convey a license under any patent rights, copyrights, trademark rights, or any other of the intellectual property rights of CADEKA or of third parties. Copyright ©2008 by CADEKA Microcircuits LLC. All rights reserved. Output Circuit ...

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