Datasheet > AD9643

AD9643

更新时间： 2024-02-23 07:20:24

品牌	Logo	应用领域
亚德诺 - ADI		转换器
页数	文件大小	规格书
36页	1660K
描述
14-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V Dual Analog-to-Digital Converter (ADC)

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AD9643 数据手册

14-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V

Dual Analog-to-Digital Converter (ADC)

AD9643

FUNCTIONAL BLOCK DIAGRAM

FEATURES

AVDD

AGND

DRVDD

SNR = 70.6 dBFS at 185 MHz A_INand 250 MSPS

SFDR = 85 dBc at 185 MHz A_INand 250 MSPS

−151.6 dBFS/Hz input noise at 185 MHz, −1 dBFS A_INand

250 MSPS

Total power consumption: 785 mW at 250 MSPS

1.8 V supply voltages

VIN+A

PIPELINE

14-BIT

ADC

D0±

VIN–A

VCM

PARALLEL

DDR LVDS

AND

AD9643

VIN+B

PIPELINE

14-BIT

ADC

D13±

LVDS (ANSI-644 levels) outputs

DRIVERS

VIN–B

Integer 1-to-8 input clock divider (625 MHz maximum input)

Sample rates of up to 250 MSPS

IF sampling frequencies of up to 400 MHz

Internal ADC voltage reference

Flexible analog input range

1.4 V p-p to 2.0 V p-p (1.75 V p-p nominal)

ADC clock duty cycle stabilizer

DCO±

OR±

REFERENCE

1 TO 8

CLOCK

DIVIDER

SERIAL PORT

OEB

PDWN

95 dB channel isolation/crosstalk

Serial port control

Energy saving power-down modes

User-configurable, built-in self-test (BIST) capability

SCLK

SDIO

CSB

CLK+

CLK–

SYNC

NOTES

1. THE D0± TO D13± PINS REPRESENT BOTH THE CHANNEL A

AND CHANNEL B LVDS OUTPUT DATA.

Figure 1.

APPLICATIONS

Communications

Diversity radio systems

Multimode digital receivers (3G)

TD-SCDMA, WiMax, WCDMA, CDMA2000, GSM, EDGE, LTE

I/Q demodulation systems

Smart antenna systems

General-purpose software radios

Ultrasound equipment

Broadband data applications

Programming for setup and control are accomplished using a

3-wire SPI-compatible serial interface.

GENERAL DESCRIPTION

The AD9643 is a dual, 14-bit analog-to-digital converter (ADC)

with sampling speeds of up to 250 MSPS. The AD9643 is designed

to support communications applications, where low cost, small

size, wide bandwidth, and versatility are desired.

The AD9643 is available in a 64-lead LFCSP and is specified over

the industrial temperature range of −40°C to +85°C. This

product is protected by a U.S. patent.

The dual ADC cores feature a multistage, differential pipelined

architecture with integrated output error correction logic. Each

ADC features wide bandwidth inputs supporting a variety of

user-selectable input ranges. An integrated voltage reference

eases design considerations. A duty cycle stabilizer is provided

to compensate for variations in the ADC clock duty cycle,

allowing the converters to maintain excellent performance.

PRODUCT HIGHLIGHTS

1. Integrated dual, 14-bit, 170 MSPS/210 MSPS/250 MSPS ADCs.

2. Operation from a single 1.8 V supply and a separate digital

output driver supply accommodating LVDS outputs.

3. Proprietary differential input maintains excellent SNR

performance for input frequencies of up to 400 MHz.

4. SYNC input allows synchronization of multiple devices.

5. 3-pin, 1.8 V SPI port for register programming and register

readback.

The ADC output data is routed directly to the two external

14-bit LVDS output ports and formatted as either interleaved or

channel multiplexed.

6. Pin compatibility with the AD9613, allowing a simple

migration down from 14 bits to 12 bits. This part is also pin

compatible with the AD6649 and the AD6643.

Flexible power-down options allow significant power savings,

when desired.

Rev. A

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 registeredtrademarks arethe property of their respective owners.

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

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

12 3 4 5 6 7...36

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与AD9643相关器件

型号	品牌	获取价格	描述	数据表
AD9643-170EBZ	ADI	获取价格	14-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V Dual Analog-to-Digital Converter (ADC)
AD9643-210EBZ	ADI	获取价格	14-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V Dual Analog-to-Digital Converter (ADC)
AD9643-250EBZ	ADI	获取价格	14-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V Dual Analog-to-Digital Converter (ADC)
AD9643BCPZ-170	ADI	获取价格	14-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V Dual Analog-to-Digital Converter (ADC)
AD9643BCPZ-210	ADI	获取价格	14-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V Dual Analog-to-Digital Converter (ADC)
AD9643BCPZ-250	ADI	获取价格	14-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V Dual Analog-to-Digital Converter (ADC)
AD9643BCPZRL7-170	ADI	获取价格	14-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V Dual Analog-to-Digital Converter (ADC)
AD9643BCPZRL7-210	ADI	获取价格	14-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V Dual Analog-to-Digital Converter (ADC)
AD9643BCPZRL7-250	ADI	获取价格	14-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V Dual Analog-to-Digital Converter (ADC)
AD9644	ADI	获取价格	Serial Output Analog-to-Digital Converter

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