AD9245BCP-65EB datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > AD9245BCP-65EB

Preview

AD9245BCP-65EB: Description14-Bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS, 3 V A/D Converter; File Size660KB，32 Pages; ManufacturerADI; Websitehttps://www.analog.com

Download Datasheet Compare View All

AD9245BCP-65EB Overview

14-Bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS, 3 V A/D Converter

Preview

Download Datasheet

View All

14-Bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS,

3 V A/D Converte

AD9245

FEATURES

Single 3 V supply operation (2.7 V to 3.6 V)

SNR = 72.7 dBc to Nyquist

SFDR = 83.0 dBc to Nyquist

Low power

366 mW at 80 MSPS

300 mW at 65 MSPS

165 mW at 40 MSPS

90 mW at 20 MSPS

Differential input with 500 MHz bandwidth

On-chip reference and sample-and-hold

DNL = ±0.5 LSB

Flexible analog input: 1 V p-p to 2 V p-p range

Offset binary or twos complement data format

Clock duty-cycle stabilizer

FUNCTIONAL BLOCK DIAGRAM

AVDD

DRVDD

AD9245

VIN+

SHA

VIN–

REFT

REFB

CORRECTION LOGIC

OUTPUT BUFFERS

D13 (MSB)

VREF

D0 (LSB)

SENSE

REF

SELECT

0.5V

CLOCK

DUTY CYCLE

STABILIZER

MODE

SELECT

03583-001

MDAC1

8-STAGE

1 1/2-BIT PIPELINE

A/D

OTR

APPLICATIONS

Medical imaging equipment

IF sampling in communications receivers

WCDMA, CDMA-One, CDMA-2000, and TDS-CDMA

Battery-powered instruments

Hand-held scopemeters

Spectrum analyzers

Power-sensitive military applications

AGND

CLK

PDWN

MODE DGND

Figure 1.

GENERAL DESCRIPTION

The AD9245 is a monolithic, single 3 V supply, 14-bit,

20 MSPS/40 MSPS/65 MSPS/80 MSPS analog-to-digital

converter (ADC) featuring a high performance sample-and-

hold amplifier (SHA) and voltage reference. The AD9245 uses a

multistage differential pipelined architecture with output error

correction logic to provide 14-bit accuracy and guarantee no

missing codes over the full operating temperature range.

The wide bandwidth, truly differential SHA allows a variety of

user-selectable input ranges and common modes, including

single-ended applications. It is suitable for multiplexed systems

that switch full-scale voltage levels in successive channels and

for sampling single-channel inputs at frequencies well beyond

the Nyquist rate. Combined with power and cost savings over

previously available analog-to-digital converters, the AD9245 is

suitable for applications in communications, imaging, and

medical ultrasound.

A single-ended clock input is used to control all internal con-

version cycles. A duty cycle stabilizer (DCS) compensates for

wide variations in the clock duty cycle while maintaining

excellent overall ADC performance. The digital output data is

presented in straight binary or twos complement formats. An

out-of-range (OTR) signal indicates an overflow condition that

can be used with the most significant bit to determine low or

high overflow. Fabricated on an advanced CMOS process, the

AD9245 is available in a 32-lead LFCSP and is specified over

the industrial temperature range (–40°C to +85°C).

PRODUCT HIGHLIGHTS

1. The AD9245 operates from a single 3 V power supply and

features a separate digital output driver supply to

accommodate 2.5 V and 3.3 V logic families.

2. The patented SHA input maintains excellent performance for

input frequencies up to 100 MHz and can be configured for

single-ended or differential operation.

3. The AD9245 is pin-compatible with the AD9215, AD9235,

and AD9236. This allows a simplified migration from 10 bits

to 14 bits and 20 MSPS to 80 MSPS.

4. The clock DCS maintains overall ADC performance over a

wide range of clock pulse widths.

5. The OTR output bit indicates when the signal is beyond the

selected input range.

Rev. D

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

www.analog.com

Fax: 781.461.3113

AD9245

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications....................................................................................... 1

General Description ......................................................................... 1

Functional Block Diagram .............................................................. 1

Product Highlights ........................................................................... 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

DC Specifications ......................................................................... 3

AC Specifications.......................................................................... 5

Digital Specifications ................................................................... 7

Switching Specifications .............................................................. 8

Absolute Maximum Ratings............................................................ 9

Thermal Resistance ...................................................................... 9

ESD Caution.................................................................................. 9

Terminology .................................................................................... 10

Pin Configuration and Function Descriptions........................... 11

Equivalent Circuits ......................................................................... 12

Typical Performance Characteristics ........................................... 13

Theory of Operation ...................................................................... 18

Analog Input and Reference Overview ................................... 18

Clock Input Considerations...................................................... 19

Jitter Considerations .................................................................. 20

Power Dissipation and Standby Mode .................................... 20

Digital Outputs ........................................................................... 20

Timing ......................................................................................... 21

Voltage Reference ....................................................................... 21

Internal Reference Connection ................................................ 21

External Reference Operation .................................................. 22

Operational Mode Selection ..................................................... 22

Evaluation Board ........................................................................ 22

Outline Dimensions ....................................................................... 29

Ordering Guide .......................................................................... 29

REVISION HISTORY

1/06—Rev. C to Rev. D

Changes to Differential Input Configurations Section and

Figure 40 .......................................................................................... 19

Changes to Internal Reference Connection Section .................. 21

Changes to Figure 49...................................................................... 23

Changes to Figure 50...................................................................... 24

Changes to Table 12........................................................................ 28

Updated Outline Dimensions ....................................................... 29

Changes to Ordering Guide .......................................................... 29

8/05—Rev. B to Rev. C

Updated Format..................................................................Universal

Changes to Features, Applications, General Description, and

Product Highlights ........................................................................... 1

Added Table 1; Renumbered Sequentially .................................... 3

Changes to Table 2............................................................................ 4

Added Table 3; Renumbered Sequentially .................................... 5

Changes to Table 4............................................................................ 6

Changes to Table 5............................................................................ 7

Changes to Table 6............................................................................ 8

Deleted Explanation of Test Levels Table ...................................... 8

Added Figure 26 to Figure 31; Renumbered Sequentially ........ 16

Added Figure 32 to Figure 37; Renumbered Sequentially ........ 17

Changes to Figure 39...................................................................... 18

Changes to Clock Input Consideration Section......................... 19

Changes to Figure 44...................................................................... 20

Changes to Table 10 ....................................................................... 21

Changes to Figure 51...................................................................... 25

Changes to Table 12 ....................................................................... 28

Changes to Ordering Guide .......................................................... 29

Updated Outline Dimensions....................................................... 29

10/03—Rev. A to Rev. B

Changes to Figure 33...................................................................... 17

5/03—Rev. 0 to Rev. A

Changes to Figure 30...................................................................... 15

Changes to Figure 37...................................................................... 19

Changes to Figure 38...................................................................... 20

Changes to Figure 39...................................................................... 21

Changes to Table 10 ....................................................................... 24

Changes to the Ordering Guide ................................................... 25

Rev. D | Page 2 of 32

AD9245BCP-65EB Related Products

	AD9245BCP-65EB	AD9245BCP-80	AD9245BCP-80EB	AD9245BCP-40EB
Description	14-Bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS, 3 V A/D Converter	14-Bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS, 3 V A/D Converter	14-Bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS, 3 V A/D Converter	14-Bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS, 3 V A/D Converter

Recommended Resources

Cable anti-theft alarm circuit

8-bit DA converted analog signal photoelectric isolation circuit

Highly sensitive light-controlled relay circuit

Lithium electronic battery charger

Neon light cycle lighting controller circuit

2~37V adjustable regulated power supply composed of μA723

How to make an electronic dog in Nios?: How to make an electronic dog in Nios? I want the code and principle code with some comments. Thanks, my level is limited....; chrisclover Embedded System

About ARM9 cache clearing problem: I want to ask if it is possible to clear the cache while the application is running. I saw that it can be done using the mcr command, but after I embedded the assembly in C, there was no response!...; yuyang6609 ARM Technology

Embedded software design based on ARM: A general overview of embedded software design...; yimingboy ARM Technology

Win CE 5.0 development garbled code problem: I recently developed a software on symbol mc 3000 and encountered a Chinese language problem. The development environment is netbean+CreCE. 1. The java program reports an exception when reading and wr...; xuyangsuccess Embedded System

Fun and practical robot pencil sharpener: Robot pencil sharpener, powered by pencil shavings. Today's students are really tired. Although computers and the Internet provide them with many new ways of entertainment, the most interesting thing ...; xyh_521 Robotics Development

240W AM/FM (20HZ-1MHZ) post-stage drive circuit: L and H are pulse outputs in turn, 5V frequency is adjustable, L is high, Q1B1's E has a small square wave, and it increases with the input voltage, the lowest is 1V, the frequency is similar to the o...; 258481469 Analog electronics

Shortcut: L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 LA LB LC LD LE LF LG LH LI LJ LK LL LM LN LO LP LQ LR LS LT LU LV LW LX LY LZ M0 M1 M2 M3 M4 M5 M6 M7 M8 M9 MA MB MC MD ME MF MG MH MI MJ MK ML MM MN MO MP MQ MR MS MT MU MV MW MX MY MZ N0 N1 N2 N3 N4 N5 N6 N7 N8 NA NB NC ND NE NF NG NH NI NJ NK NL NM NN NO NP NQ NR NS NT NU NV NX NZ O0 O1 O2 O3 OA OB OC OD OE OF OG OH OI OJ OK OL OM ON OP OQ OR OS OT OV OX OY OZ P0 P1 P2 P3 P4 P5 P6 P7 P8 P9 PA PB PC PD PE PF PG PH PI PJ PK PL PM PN PO PP PQ PR PS PT PU PV PW PX PY PZ Q1 Q2 Q3 Q4 Q5 Q6 Q8 Q9 QA QB QC QE QF QG QH QK QL QM QP QR QS QT QV QW QX QY R0 R1 R2 R3 R4 R5 R6 R7 R8 R9 RA RB RC RD RE RF RG RH RI RJ RK RL RM RN RO RP RQ RR RS RT RU RV RW RX RY RZ

Popular Components