Rainbow-electronics ADC08L060 Uživatelský manuál

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ADC08L060
8-Bit, 10 MSPS to 60 MSPS, 0.65 mW/MSPS A/D
Converter with Internal Sample-and-Hold
General Description
The ADC08L060 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 of 10 MSPS to
60 MSPS while consuming just 0.65 mW per MHz of clock
frequency, or 39 mW at 60 MSPS. Raising the PD pin puts
the ADC08L060 into a Power Down mode where it con-
sumes about 1 mW.
The unique architecture achieves 7.6 Effective Bits. The
ADC08L060 is resistant to latch-up and the outputs are
short-circuit proof. The top and bottom of the ADC08L060s
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 1.8V to 3V logic. The digital
inputs (CLK and PD) are TTL/CMOS compatible.
The ADC08L060 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 evaluation of the ADC08L060.
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 Conversion rate 60 MSPS
n DNL
±
0.25 LSB (typ)
n INL +0.5/−0.2 LSB (typ)
n SNR (10.1 MHz) 48 dB (typ)
n ENOB (10.1 MHz) 7.6 bits (typ)
n THD (10.1 MHz) −57 dB (typ)
n Latency 5 Clock Cycles
n No missing codes Guaranteed
n Power Consumption
— Operating 0.65 mW/MSPS (typ)
— Power Down Mode 1.0 mW (typ)
Applications
n Digital Imaging
n Set-top boxes
n Portable Instrumentation
n Communication Systems
n X-ray imaging
n Viterbi decoders
Pin Configuration
20041701
July 2004
ADC08L060 8-Bit, 10 MSPS to 60 MSPS, 0.65 mW/MSPS A/D Converter with Internal
Sample-and-Hold
© 2004 National Semiconductor Corporation DS200417 www.national.com
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Shrnutí obsahu

Strany 1 - ADC08L060

ADC08L0608-Bit, 10 MSPS to 60 MSPS, 0.65 mW/MSPS A/DConverter with Internal Sample-and-HoldGeneral DescriptionThe ADC08L060 is a low-power, 8-bit, mon

Strany 2 - Block Diagram

Typical Performance Characteristics VA=VDR= 3V, fCLK= 60 MHz, fIN= 10 MHz, unless otherwisestated (Continued)SNR, SINAD and SFDR vs. Temperature SNR,

Strany 3

Typical Performance Characteristics VA=VDR= 3V, fCLK= 60 MHz, fIN= 10 MHz, unless otherwisestated (Continued)Distortion vs. Supply Voltage, VADistorti

Strany 4 - Package Thermal Resistance

Typical Performance Characteristics VA=VDR= 3V, fCLK= 60 MHz, fIN= 10 MHz, unless otherwisestated (Continued)Power Consumption (Active) vs.Sample Rate

Strany 5

Functional DescriptionThe ADC08L060 uses a unique architecture that achievesover 7 effective bits at input frequencies up to and beyondNyquist.The ana

Strany 6

Applications Information (Continued)2.0 THE ANALOG INPUTThe analog input of the ADC08L060 is a switch followed byan integrator. The input capacitance

Strany 7 - Specification Definitions

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

Strany 8 - Timing Diagram

Applications Information (Continued)4.2.2 Clock Line TerminationThe CLOCK line should be series terminated at the clocksource in the characteristic im

Strany 9

Applications Information (Continued)The analog input should be isolated from noisy signal tracesto avoid coupling of spurious signals into the input.

Strany 10

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

Strany 11

Ordering InformationOrder Number (−40˚C ≤ TA≤ +85˚C) PackageADC08L060CIMT TSSOPADC08L060CIMTX TSSOP (tape and reel)ADC08L060EVAL Evaluation BoardBlock

Strany 12

Pin Descriptions and Equivalent CircuitsPin No. Symbol Equivalent Circuit Description6VINAnalog signal input. Conversion range is VRBto VRT.3VRTAnalog

Strany 13 - Applications Information

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

Strany 14

Converter Electrical Characteristics (Continued)The following specifications apply for VA=VDR= +3.0VDC,VRT= +1.9V, VRB= 0.3V, CL= 10 pF, fCLK= 60 MHz

Strany 15

Converter Electrical Characteristics (Continued)The following specifications apply for VA=VDR= +3.0VDC,VRT= +1.9V, VRB= 0.3V, CL= 10 pF, fCLK= 60 MHz

Strany 16

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

Strany 17

Timing DiagramTypical Performance CharacteristicsVA=VDR= 3V, fCLK= 60 MHz, fIN= 10 MHz, unless other-wise statedINL INL vs. Temperature200417532004171

Strany 18 - Sample-and-Hold

Typical Performance Characteristics VA=VDR= 3V, fCLK= 60 MHz, fIN= 10 MHz, unless otherwisestated (Continued)INL vs. Clock Duty Cycle DNL2004171520041

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