Rainbow-electronics ADC08200 Instrukcja Użytkownika

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ADC08200
8-Bit, 20 MSPS to 200 MSPS, 1.05 mW/MSPS A/D
Converter
General Description
The ADC08200 is a low-power, 8-bit, monolithic analog-to-
digital converter with an on-chip track-and-hold circuit. Opti-
mized for low cost, low power, small size and ease of use,
this product operates at conversion rates up to 230 MSPS
while consuming just 1.05 mW per MHz of clock frequency,
or 210 mW at 200 MSPS. Raising the PD pin puts the
ADC08200 into a Power Down mode where it consumes
about 1 mW.
The unique architecture achieves 7.3 Effective Bits with
50 MHz input frequency. The ADC08200 is resistant to
latch-up and the outputs are short-circuit proof. The top and
bottom of the ADC08200’s reference ladder are available for
connections, enabling a wide range of input possibilities. The
digital outputs are TTL/CMOS compatible with a separate
output power supply pin to support interfacing with 3V or
2.5V logic. The digital inputs (CLK and PD) are TTL/CMOS
compatible.
The ADC08200 is offered in a 24-lead plastic package
(TSSOP) and is specified over the industrial temperature
range of −40˚C to +85˚C. An evaluation board is available to
assist in the easy evaluation of the ADC08200.
Features
n Single-ended input
n Internal sample-and-hold function
n Low voltage (single +3V) operation
n Small package
n Power-down feature
Key Specifications
n Resolution 8 Bits
n Maximum sampling frequency 200 MSPS (min)
n DNL
±
0.4 LSB (typ)
n ENOB (f
IN
= 50 MHz) 7.3 bits (typ)
n THD (f
IN
= 50 MHz) 61 dB (typ)
n Power Consumption
— Operating 1.05 mW/MSPS (typ)
— Power Down 1 mW (typ)
Applications
n Flat panel displays
n Projection systems
n Set-top boxes
n Battery-powered instruments
n Communications
n Medical imaging
n Astronomy
Pin Configuration
20017901
July 2004
ADC08200 8-Bit, 20 MSPS to 200 MSPS, 1.05 mW/MSPS A/D Converter
© 2004 National Semiconductor Corporation DS200179 www.national.com
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Podsumowanie treści

Strona 1 - Converter

ADC082008-Bit, 20 MSPS to 200 MSPS, 1.05 mW/MSPS A/DConverterGeneral DescriptionThe ADC08200 is a low-power, 8-bit, monolithic analog-to-digital conve

Strona 2 - Block Diagram

Typical Performance Characteristics VA=VDR= 3V, fCLK= 200 MHz, fIN= 50 MHz, unlessotherwise stated (Continued)SNR vs. Sample Rate SNR vs. Input Freque

Strona 3

Typical Performance Characteristics VA=VDR= 3V, fCLK= 200 MHz, fIN= 50 MHz, unlessotherwise stated (Continued)Distortion vs. Input Frequency Distortio

Strona 4 - Package Thermal Resistance

Typical Performance Characteristics VA=VDR= 3V, fCLK= 200 MHz, fIN= 50 MHz, unlessotherwise stated (Continued)SINAD/ENOB vs. Clock Duty Cycle Power Co

Strona 5

Functional DescriptionThe ADC08200 uses a new, unique architecture thatachieves over 7 effective bits at input frequencies up to andbeyond 100 MHz.The

Strona 6

Applications Information (Continued)2.0 THE ANALOG INPUTThe analog input of the ADC08200 is a switch followed by anintegrator. The input capacitance c

Strona 7 - Specification Definitions

Applications Information (Continued)3.0 POWER SUPPLY CONSIDERATIONSA/D converters draw sufficient transient current to corrupttheir own power supplies

Strona 8 - Timing Diagram

Applications Information (Continued)The CLOCK line should be series terminated at the clocksource in the characteristic impedance of that line if the

Strona 9

Applications Information (Continued)the supply pins. Exceeding these limits on even a transientbasis may cause faulty or erratic operation. It is not

Strona 10

Physical Dimensions inches (millimeters)unless otherwise notedNOTES: UNLESS OTHERWISE SPECIFIEDREFERENCE JEDEC REGISTRATION mo-153, VARIATION AD, DATE

Strona 11

Ordering InformationOrder Number (−40˚C ≤ TA≤ +85˚C) PackageADC08200CIMT TSSOPADC08200CIMTX TSSOP (tape and reel)ADC08200EVAL Evaluation BoardBlock Di

Strona 12

Pin Descriptions and Equivalent Circuits (Continued)Pin No. Symbol Equivalent Circuit Description23 PDPower Down input. When this pin is high, the con

Strona 13 - Applications Information

Absolute Maximum Ratings(Notes 1, 2)If Military/Aerospace specified devices are required,please contact the National Semiconductor Sales Office/Distri

Strona 14

Converter Electrical Characteristics (Continued)The following specifications apply for VA=VDR= +3.0VDC,VRT= +1.9V, VRB= 0.3V, CL= 5 pF, fCLK= 200 MHz

Strona 15

Converter Electrical Characteristics (Continued)The following specifications apply for VA=VDR= +3.0VDC,VRT= +1.9V, VRB= 0.3V, CL= 5 pF, fCLK= 200 MHz

Strona 16

Specification DefinitionsAPERTURE (SAMPLING) DELAY is that time required afterthe rise of the clock input for the sampling switch to open.The Sample/H

Strona 17

Timing DiagramTypical Performance CharacteristicsVA=VDR= 3V, fCLK= 200 MHz, fIN= 50 MHz, unless other-wise statedINL INL vs. Temperature20017908200179

Strona 18 - NS Package Number MTC24

Typical Performance Characteristics VA=VDR= 3V, fCLK= 200 MHz, fIN= 50 MHz, unlessotherwise stated (Continued)DNL DNL vs. Temperature2001790920017917D

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