AD9789BBCZ

更新时间： 2024-11-05 12:41:39

品牌	Logo	应用领域
亚德诺 - ADI		转换器数模转换器射频 PC
页数	文件大小	规格书
76页	1438K
描述
14-Bit, 2400 MSPS RF DAC with 4-Channel Signal Processing

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AD9789BBCZ 数据手册

14-Bit, 2400 MSPS RF DAC

with 4-Channel Signal Processing

AD9789

The on-chip rate converter supports a wide range of baud rates

with a fixed DAC clock. The digital upconverter can place the

channels from 0 to 0.5 × f_DAC. This permits four contiguous

channels to be synthesized and placed anywhere from dc to f_DAC/2.

FEATURES

DOCSIS 3.0 performance: 4 QAM carriers

ACLR over full band (47 MHz to 1 GHz)

−75 dBc @ f_OUT= 200 MHz

−72 dBc @ f_OUT= 800 MHz (noise)

−67 dBc @ f_OUT= 800 MHz (harmonics)

Unequalized MER = 42 dB

The AD9789 includes a serial peripheral interface (SPI) for

device configuration and status register readback. The flexible

digital interface can be configured for data bus widths of 4, 8,

16, and 32 bits. It can accept real or complex data.

On chip and bypassable

4 QAM encoders with SRRC filters, 16× to 512× interpolation,

rate converters, and modulators

Flexible data interface: 4, 8, 16, or 32 bits wide with parity

Power: 1.6 W (I_FS= 20 mA, f_DAC= 2.4 GHz, LVDS interface)

Direct to RF synthesis support with f_Smix mode

Built-in self-test (BIST) support

The AD9789 operates from 1.5 V, 1.8 V, and 3.3 V supplies for

a total power consumption of 1.6 W. It is supplied in a 164-ball

chip scale package ball grid array for lower thermal impedance

and reduced package parasitics. No special power sequencing

is required. The clock receiver powers up muted to prevent

start-up noise.

Input connectivity check

PRODUCT HIGHLIGHTS

Internal random number generator

1. Highly integrated and configurable QAM mappers, inter-

polators, and upconverters for direct synthesis of one to

four DOCSIS- or DVB-C-compatible channels in a block.

2. Low noise and intermodulation distortion (IMD) perfor-

mance enable high quality synthesis of signals up to 1 GHz.

3. Flexible data interface supports LVDS for improved SFDR

or CMOS input data for less demanding applications.

4. Interface is configurable from 4-bit nibbles to 32-bit words

and can run at up to 150 MHz CMOS or 150 MHz LVDS

double data rate (DDR).

APPLICATIONS

Broadband communications systems

CMTS/DVB

Cellular infrastructure

Point-to-point wireless

GENERAL DESCRIPTION

The AD9789 is a flexible QAM encoder/interpolator/upconverter

combined with a high performance, 2400 MSPS, 14-bit RF digital-

to-analog converter (DAC). The flexible digital interface can

accept up to four channels of complex data. The QAM encoder

supports constellation sizes of 16, 32, 64, 128, and 256 with

SRRC filter coefficients for all standards.

5. Manufactured on a CMOS process, the AD9789 uses a

proprietary switching technique that enhances dynamic

performance.

FUNCTIONAL BLOCK DIAGRAM

QAM/

FILTER/

NCO

CMOS

0 TO 15

LVDS

DATA

32 INPUT

PINS

AND

2 PARITY

PINS

RISE

QAM/

FILTER/

NCO

DATA

RETIMER

DATA FORMATTER/

ASSEMBLER

16×

150MHz

LVDS/CMOS

14-BIT

2.4GSPS

DAC

INTERPOLATOR

AND BPF

+ SCALARS

CMOS

16 TO 31

LVDS

QAM/

FILTER/

NCO

FALL

DCO

SPI

IRQ RS

QAM/

FILTER/

NCO

Figure 1.

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 www.analog.com

12 3 4 5 6 7...76

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AD9789BBCZ 替代型号

型号	品牌	替代类型	描述	数据表
AD9789BBC	ADI	完全替代	14-Bit, 2400 MSPS RF DAC with 4-Channel Signal Processing
AD9789BBCRL	ADI	类似代替	14-Bit, 2400 MSPS RF DAC with 4-Channel Signal Processing
AD9789BBCZRL	ADI	功能相似	暂无描述

与AD9789BBCZ相关器件

型号	品牌	获取价格	描述	数据表
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AD9801-EB	ADI	获取价格	IC SPECIALTY CONSUMER CIRCUIT, PQFP48, 1.40 MM HEIGHT, PLASTIC, TQFP-48, Consumer IC:Other
AD9801JCST	ROCHESTER	获取价格	SPECIALTY CONSUMER CIRCUIT, PQFP48, 1.40 MM HEIGHT, PLASTIC, TQFP-48
AD9801JCST	ADI	获取价格	IC SPECIALTY CONSUMER CIRCUIT, PQFP48, 1.40 MM HEIGHT, PLASTIC, TQFP-48, Consumer IC:Other
AD9801JCSTRL	ADI	获取价格	IC SPECIALTY CONSUMER CIRCUIT, PQFP48, 1.40 MM HEIGHT, PLASTIC, TQFP-48, Consumer IC:Other
AD9802	ADI	获取价格	CCD Signal Processor For Electronic Cameras
AD9802JST	ADI	获取价格	CCD Signal Processor For Electronic Cameras
AD9802JSTRL	ADI	获取价格	IC SPECIALTY CONSUMER CIRCUIT, PQFP48, PLASTIC, TQFP-48, Consumer IC:Other
AD9803	ADI	获取价格	CCD Signal Processor For Electronic Cameras

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