DAC5674

更新时间： 2024-11-28 22:40:31

品牌	Logo	应用领域
德州仪器 - TI		转换器数模转换器
页数	文件大小	规格书
32页	504K
描述
14BIT 400 MSPS, 2 X/ 4X INTERPOLATING COMMS DAC DIGITAL TO ANALOG CONVERTER

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DAC5674 数据手册

www.ti.com

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SLWS148 − SEPTEMBER 2003

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Differential Scalable Current Outputs: 2 mA to

20 mA

FEATURES

200-MSPS Maximum Input Data Rate

400-MSPS Maximum Update Rate DAC

On-Chip 1.2-V Reference

1.8-V Digital and 3.3-V Analog Supply

Operation

76-dBc SFDR Over Full First Nyquist Zone

With Single Tone Input Signal (F = 21 MHz)

1.8/3.3-V CMOS Compatible Interface

Power Dissipation: 435 mW at 400 MSPS

Package: 48-Pin TQFP

out

74-dBc ACPR W-CDMA at 15.36 MHz IF

69-dBc ACPR W-CDMA at 30.72 MHz IF

Selectable 2x or 4x Interpolation Filter

− Linear Phase

− 0.05-dB Passband Ripple

− 80-dB Stopband Attenuation

APPLICATIONS

Cellular Base Transceiver Station Transmit

Channel

− CDMA: W−CDMA, CDMA2000, IS−95

− TDMA: GSM, IS−136, EDGE/UWC−136

− Stopband Transition 0.4−0.6 F

data

− nterpolation Filters Configurable in Either

Low-Pass or High-Pass Mode, Allows For

Selection Higher Order Image

Test and Measurement: Arbitrary Waveform

Generation

Direct Digital Synthesis (DDS)

On-chip 2x/4x PLL Clock Multiplier, PLL

Bypass Mode

Cable Modem Termination System

DESCRIPTION

The DAC5674 is a 14-bit resolution high-speed digital-to-analog converter (DAC) with integrated

4x-interpolation filter, on-board clock multiplier, and on-chip voltage reference. The device has been designed

for high-speed digital data transmission in wired and wireless communication systems, high-frequency

direct-digital synthesis (DDS) and waveform reconstruction in test and measurement applications.

The 4x-interpolation filter is implemented as a cascade of two 2x-interpolation filters, each of which can be

configured for either low-pass or high-pass response. This enables the user to select one of the higher order

images present at multiples of the input data rate clock while maintaining a low date input rate. The resulting

high IF output frequency allows the user to omit the conventional first mixer in heterodyne transmitter

architectures and directly up-convert to RF using only one mixer, thereby reducing system complexity and

costs.

In 4x-interpolation low-pass response mode, the DACs excellent spurious free dynamic range (SFDR) at

intermediate frequencies located in the first Nyquist zone (up to 40 MHz) allows for multicarrier transmission

in cellular base transceiver stations (BTS). The low-pass interpolation mode thereby relaxes image filter

requirements by filtering out the images in the adjacent Nyquist zones.

The DAC5674 PLL clock multiplier controls all internal clocks for the digital filters and DAC core. The differential

clock input and internal clock circuitry provides for optimum jitter performance. Sine wave clock input signal is

supported. The PLL can be bypassed by an external clock running at the DAC core update rate. The clock

divider of the PLL ensures that the digital filters operate at the correct clock frequencies.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments

semiconductor products and disclaimers thereto appears at the end of this data sheet.

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与DAC5674相关器件

型号	品牌	获取价格	描述	数据表
DAC5674IPHP	TI	获取价格	14-BIT, 40 MSPS, 2x/4x INTERPOLATING CommsDAC DIGITAL-TO-ANALOG CONVERTER
DAC5674IPHPG4	TI	获取价格	14-BIT, 40 MSPS, 2x/4x INTERPOLATING CommsDAC DIGITAL-TO-ANALOG CONVERTER
DAC5674IPHPR	TI	获取价格	14-BIT, 40 MSPS, 2x/4x INTERPOLATING CommsDAC DIGITAL-TO-ANALOG CONVERTER
DAC5674IPHPRG4	TI	获取价格	14-BIT, 40 MSPS, 2x/4x INTERPOLATING CommsDAC DIGITAL-TO-ANALOG CONVERTER
DAC5675	TI	获取价格	14-BIT, 400-MSPS DIGITAL-TO-ANALOG CONVERTER
DAC5675A	TI	获取价格	14-Bit, 400MSPS Digital-to-Analog Converter
DAC5675AHFG/EM	TI	获取价格	QMLV、150krad、陶瓷、14 位、单通道、400MSPS DAC \| HFG \|
DAC5675AIPHP	TI	获取价格	14-Bit, 400MSPS Digital-to-Analog Converter
DAC5675AIPHPG4	TI	获取价格	14-Bit, 400MSPS Digital-to-Analog Converter
DAC5675AIPHPR	TI	获取价格	14-Bit, 400MSPS Digital-to-Analog Converter

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