AD9248BST-65

更新时间： 2024-10-28 22:47:35

品牌	Logo	应用领域
亚德诺 - ADI		转换器模数转换器
页数	文件大小	规格书
23页	262K
描述
14-Bit, 20/40/65 MSPS Dual A/ D Converter

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替代型号

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AD9248BST-65 数据手册

14-Bit, 20/40/65 MSPS

Dual A/D Converter

Preliminary Technical Data

AD9248

AGND

AVDD

ADC

FEATURES

OTR_A

D13_A-D_0A

OEB_A

Integrated Dual 14-Bit A-to-D Converters

Single 3 V Supply Operation (2.7 V to 3.6 V)

SNR = 73 dBc (to Nyquist, AD9248-65)

SFDR = 83 dBc (to Nyquist, AD9248-65)

Low Power: 600 mW at 65 MSPS

VIN+_A

VIN- _A

SHA

REFT_A

REFB_A

MUX_SELECT

CLK_A

CLK_B

Clock

Duty Cycle

Stabilizer

VREF

DCS

SENSE

Differential Input with 500 MHz 3 dB Bandwidth

Exceptional Cross Talk Immunity > 85dB

Flexible Analog Input: 1 V p-p to 2 V p-p Range

Offset Binary or Twos Complement Data Format

Clock Duty Cycle Stabilizer

SHARED_REF

PWDN_A

PWDN_B

DFS

AGND

0.5V

Mode

Control

REFT_B

REFB_B

OTR_B

D13_B-D_0B

OEB_B

VIN+_B

VIN-_B

SHA

ADC

APPLICATIONS

AD9248

Ultrasound Equipment

DRVDD

DRGND

IF Sampling in Communications Receivers:

IS-95, CDMA One, IMT-2000

Battery-Powered Instruments

Hand-Held Scopemeters

Figure 1. Functional Block Diagram

PRODUCT HIGHLIGHTS

1. Pin compatible with AD9238, 12-bit 20/40/65MSPS

ADC.

Low Cost Digital Oscilloscopes

GENERAL DESCRIPTION

2. Speed grade options of 20 MSPS, 40 MSPS, and 65

MSPS allow flexibility between power, cost, and

performance to suit an application.

The AD9248 is a dual, 3 V, 14-bit, 20/40/65 MSPS analog-to-

digital converter. It features dual high performance sample-and

hold amplifiers and an integrated voltage reference. The

AD9248 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 at up to 65 MSPS data rates. The wide

bandwidth, differential SHA allows for a variety of user

selectable input ranges and offsets including single-ended

applications. It is suitable for various applications including

multiplexed systems that switch full-scale voltage levels in

successive channels and for sampling inputs at frequencies well

beyond the Nyquist rate.

3. Low power consumption:

AD9248-65: 65 MSPS = 600 mW.

AD9248-40: 40 MSPS = 330 mW.

AD9248-20: 20 MSPS = 180 mW.

4. The patented SHA input maintains excellent

performance for input frequencies up to 100 MHz and

can be configured for single-ended or differential

operation.

5. Typical channel isolation of 85 dB @ f = 10 MHz.

Dual single-ended clock inputs are used to control all internal

conversion cycles. A duty cycle stabilizer is available on the

AD9248-65 and can compensate for wide variations in the

clock duty cycle, allowing the converters to maintain excellent

performance. The digital output data is presented in either

straight binary or twos complement format. Out-of-range

signals indicate an overflow condition, which can be used with

the most significant bit to determine low or high overflow.

Fabricated on an advanced CMOS process, the AD9248 is

available in a space saving 64-lead LQFP and is specified over

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

6. The clock duty cycle stabilizer (AD9248-65 only)

maintains performance over a wide range of clock

duty cycles.

7. The OTR output bits indicate when either input signal

is beyond the selected input range.

8. Multiplexed data output option enables single-port

operation from either data port A or data port B.

Rev. PrE

6/29/2004

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 companies.

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

U.S.A.

Tel: 781.329.4700

www.analog.com

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AD9248BST-65 替代型号

型号	品牌	替代类型	描述	数据表
AD9248BSTZ-65	ADI	功能相似	14-Bit, 20 MSPS/40 MSPS/65 MSPS Dual A/D Converter
AD9248BSTZ-40	ADI	功能相似	14-Bit, 20 MSPS/40 MSPS/65 MSPS Dual A/D Converter
AD9248BSTZ-20	ADI	功能相似	14-Bit, 20 MSPS/40 MSPS/65 MSPS Dual A/D Converter

与AD9248BST-65相关器件

型号	品牌	获取价格	描述	数据表
AD9248BST-65EB	ADI	获取价格	High Speed ADC USB FIFO Evaluation Kit
AD9248BST-65EBZ	ADI	获取价格	14-Bit, 20 MSPS/40 MSPS/65 MSPS Dual A/D Converter
AD9248BSTZ-20	ADI	获取价格	14-Bit, 20 MSPS/40 MSPS/65 MSPS Dual A/D Converter
AD9248BSTZ-40	ADI	获取价格	14-Bit, 20 MSPS/40 MSPS/65 MSPS Dual A/D Converter
AD9248BSTZ-65	ADI	获取价格	14-Bit, 20 MSPS/40 MSPS/65 MSPS Dual A/D Converter
AD9248BSTZRL-20	ADI	获取价格	14-Bit, 20 MSPS/40 MSPS/65 MSPS Dual A/D Converter
AD9248BSTZRL-40	ADI	获取价格	14-Bit, 20 MSPS/40 MSPS/65 MSPS Dual A/D Converter
AD9248BSTZRL-65	ADI	获取价格	14-Bit, 20 MSPS/40 MSPS/65 MSPS Dual A/D Converter
AD9249	ADI	获取价格	16 Channel, 14-Bit, 65 MSPS, Serial LVDS, 1.8 V ADC
AD9249-65EBZ	ADI	获取价格	16 Channel, 14-Bit, 65 MSPS, Serial LVDS, 1.8 V ADC

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