Rainbow-electronics ADC12L066 Uživatelský manuál stáhnout pdf

ADC12L066

12-Bit, 66 MSPS, 450 MHz Bandwidth A/D Converter with

Internal Sample-and-Hold

General Description

The ADC12L066 is a monolithic CMOS analog-to-digital con-

verter capable of converting analog input signals into 12-bit

digital words at 66 Megasamples per second (MSPS), mini-

mum, with typical operation possible up to 80 MSPS. This

converter uses a differential, pipeline architecture with digital

error correction and an on-chip sample-and-hold circuit to

minimize die size and power consumption while providing

excellent dynamic performance. A unique sample-and-hold

stage yields a full-power bandwidth of 450 MHz. Operating

on a single 3.3V power supply, this device consumes just

357 mW at 66 MSPS, including the reference current. The

Power Down feature reduces power consumption to just

50 mW.

The differential inputs provide a full scale input swing equal

REF

with the possibility of a single-ended input. Full use

of the differential input is recommended for optimum perfor-

mance. For ease of use, the buffered, high impedance,

single-ended reference input is converted on-chip to a differ-

ential reference for use by the processing circuitry. Output

data format is 12-bit offset binary.

This device is available in the 32-lead LQFP package and

will operate over the industrial temperature range of −40˚C to

+85˚C. An evaluation board is available to facilitate the

evaluation process.

Features

n Single supply operation

n Low power consumption

n Power down mode

n On-chip reference buffer

Key Specifications

n Resolution 12 Bits

n Conversion Rate 66 MSPS

n Full Power Bandwidth 450 MHz

n DNL

0.4 LSB (typ)

n SNR (f

= 10 MHz) 66 dB (typ)

n SFDR (f

= 10 MHz) 80 dB (typ)

n Data Latency 6 Clock Cycles

n Supply Voltage +3.3V

300 mV

n Power Consumption, 66 MHz 357 mW (typ)

Applications

n Ultrasound and Imaging

n Instrumentation

n Cellular Base Stations/Communications Receivers

n Sonar/Radar

n xDSL

n Wireless Local Loops

n Data Acquisition Systems

n DSP Front Ends

Connection Diagram

20032801

TRI-STATE

is a registered trademark of National Semiconductor Corporation.

December 2003

ADC12L066 12-Bit, 66 MSPS, 450 MHz Bandwidth A/D Converter with Internal Sample-and-Hold

1 2 3 4 5 6 ... 26 27

Shrnutí obsahu

Strany 1 - Internal Sample-and-Hold

ADC12L06612-Bit, 66 MSPS, 450 MHz Bandwidth A/D Converter withInternal Sample-and-HoldGeneral DescriptionThe ADC12L066 is a monolithic CMOS analog-to-

Strany 2 - Block Diagram

Specification DefinitionsAPERTURE DELAY is the time after the rising edge of theclock to when the input signal is acquired or held for conver-sion.APE

Strany 3

Timing Diagram20032809Output TimingTransfer Characteristic20032810FIGURE 1. Transfer CharacteristicADC12L066www.national.com11

Strany 4

Typical Performance Characteristics VA=VD= 3.3V, VDR= 2.5V, fCLK= 66 MHz, fIN= 25 MHz,VREF= 1.0V, unless otherwise stated.DNL DNL vs. fCLK200328E62003

Strany 5

Typical Performance Characteristics VA=VD= 3.3V, VDR= 2.5V, fCLK= 66 MHz, fIN= 25 MHz,VREF= 1.0V, unless otherwise stated. (Continued)INL vs. Clock Du

Strany 6

Typical Performance Characteristics VA=VD= 3.3V, VDR= 2.5V, fCLK= 66 MHz, fIN= 25 MHz,VREF= 1.0V, unless otherwise stated. (Continued)SNR vs. Clock Du

Strany 7

Typical Performance Characteristics VA=VD= 3.3V, VDR= 2.5V, fCLK= 66 MHz, fIN= 25 MHz,VREF= 1.0V, unless otherwise stated. (Continued)THD vs. fCLKTHD

Strany 8

Typical Performance Characteristics VA=VD= 3.3V, VDR= 2.5V, fCLK= 66 MHz, fIN= 25 MHz,VREF= 1.0V, unless otherwise stated. (Continued)SINAD vs. VCMSIN

Strany 9 - AC Electrical Characteristics

Typical Performance Characteristics VA=VD= 3.3V, VDR= 2.5V, fCLK= 66 MHz, fIN= 25 MHz,VREF= 1.0V, unless otherwise stated. (Continued)SFDR vs. VDRSFDR

Strany 10 - Specification Definitions

Typical Performance Characteristics VA=VD= 3.3V, VDR= 2.5V, fCLK= 66 MHz, fIN= 25 MHz,VREF= 1.0V, unless otherwise stated. (Continued)Power Consumptio

Strany 11 - Transfer Characteristic

Typical Performance Characteristics VA=VD= 3.3V, VDR= 2.5V, fCLK= 66 MHz, fIN= 25 MHz,VREF= 1.0V, unless otherwise stated. (Continued)Spectral Respons

Strany 12

Ordering InformationIndustrial (−40˚C ≤ TA≤ +85˚C) PackageADC12L066CIVY 32 Pin LQFPADC12L066CIVYX 32 Pin LQFP Tape and ReelADC12L066EVAL Evaluation Bo

Strany 13

Functional DescriptionOperating on a single +3.3V supply, the ADC12L066 uses apipeline architecture and has error correction circuitry to helpensure m

Strany 14

Applications Information (Continued)The two input signals should be exactly 180˚ out of phasefrom each other and of the same amplitude. For singlefreq

Strany 15

Applications Information (Continued)2.0 DIGITAL INPUTSDigital inputs are TTL/CMOS compatible and consist of CLK,OE and PD.2.1 CLKThe CLK signal contro

Strany 16

Applications Information (Continued)20032813FIGURE 4. Simple Application Circuit with Single-Ended to Differential Buffer20032814FIGURE 5. Differentia

Strany 17

Applications Information (Continued)4.0 POWER SUPPLY CONSIDERATIONSThe power supply pins should be bypassed with a 10 µFcapacitor and with a 0.1 µF ce

Strany 18

Applications Information (Continued)weight will have little effect upon the logic-generated noise.This is because of the skin effect. Total surface ar

Strany 19

Applications Information (Continued)cause faulty or erratic operation. It is not uncommon for highspeed digital components (e.g., 74F and 74AC devices

Strany 20 - Applications Information

Physical Dimensions inches (millimeters) unless otherwise noted32-Lead LQFP PackageOrdering Number ADC12L066CIVYNS Package Number VBE32ALIFE SUPPORT P

Strany 21

Pin Descriptions and Equivalent CircuitsPin No. Symbol Equivalent Circuit DescriptionANALOG I/O2VIN+Analog signal Input pins. With a 1.0V reference vo

Strany 22

Pin Descriptions and Equivalent Circuits (Continued)Pin No. Symbol Equivalent Circuit Description14–19,22–27D0–D11Digital data output pins that make u

Strany 23

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

Strany 24

Converter Electrical Characteristics (Continued)Unless otherwise specified, the following specifications apply for AGND = DGND = DR GND = 0V, VA=VD= +

Strany 25

Converter Electrical Characteristics (Continued)Unless otherwise specified, the following specifications apply for AGND = DGND = DR GND = 0V, VA=VD= +

Strany 26

Converter Electrical Characteristics (Continued)Unless otherwise specified, the following specifications apply for AGND = DGND = DR GND = 0V, VA=VD= +

Strany 27 - NS Package Number VBE32A

AC Electrical CharacteristicsUnless otherwise specified, the following specifications apply for AGND = DGND = DR GND = 0V, VA=VD= +3.3V,VDR= +2.5V, PD

Komentáře k této Příručce

Žádné komentáře

Rainbow-electronics ADC12L066 Uživatelský manuál

Procházejte online nebo si stáhněte Uživatelský manuál pro Senzory Rainbow-electronics ADC12L066. Rainbow Electronics ADC12L066 User Manual Uživatelská příručka

Shrnutí obsahu

Komentáře k této Příručce

Související produkty a manuály pro Senzory Rainbow-electronics ADC12L066