DAC2904Y集成电路（IC）的数模转换器（DAC）规格书PDF中文资料

DAC2904Y属于集成电路（IC）的数模转换器（DAC）。由德州仪器制造生产的DAC2904Y数模转换器（DAC）数模转换器（DAC、D/A、D2A 或 D 转 A）可将数字信号转换为缓冲或无缓冲的模拟电压或电流。DAC 架构是否适合特定应用，要取决于分辨率和采样频率。DAC 通常用于音乐播放器，将数字数据流转换为模拟音频流。它们还用于电视和手机，将数字视频数据转换为模拟视频信号，再连接到屏幕驱动器，以显示单色或彩色图像。

1FEATURES

2• 125MSPS UPDATE RATE

• SINGLE SUPPLY: +3.3V or +5V

• HIGH SFDR: 78dB at f OUT = 10MHz

• LOW GLITCH: 2pV-s

• LOW POWER: 310mW

• INTERNAL REFERENCE

• POWER-DOWN MODE: 23mW

APPLICATIONS

• COMMUNICATIONS:

– Base Stations, WLL, WLAN

– Baseband I/Q Modulation

• MEDICAL/TEST INSTRUMENTATION

• ARBITRARY WAVEFORM GENERATORS

(ARB)

• DIRECT DIGITAL SYNTHESIS (DDS)

DESCRIPTION

The DAC2904 is a monolithic, 14-bit, dual-channel,

high-speed Digital-to-Analog Converter (DAC), and is

optimized to provide high dynamic performance while

dissipating only 310mW.

Operating with high update rates of up to 125MSPS,

the DAC2904 offers exceptional dynamic

performance, and enables the generation of very-high

output frequencies suitable for “Direct IF”

applications. The DAC2904 has been optimized for

communications applications in which separate I and

Q data are processed while maintaining tight-gain

and offset matching.

Each DAC has a high-impedance differential-current

output, suitable for single-ended or differential

analog-output configurations.

space

The DAC2904 combines high dynamic performance

with a high update rate to create a cost-effective

solution for a wide variety of waveform-synthesis

applications:

• Pin compatibility between family members

provides 10-bit (DAC2900), 12-bit (DAC2902),

and 14-bit (DAC2904) resolution.

• Pin compatible to the AD9767 dual DAC.

• Gain matching is typically 0.5% of full-scale, and

offset matching is specified at 0.02% max.

• The DAC2904 utilizes an advanced CMOS

process; the segmented architecture minimizes

output-glitch energy, and maximizes the dynamic

performance.

• All digital inputs are +3.3V and +5V logic

compatible. The DAC2904 has an internal

reference circuit, and allows use in a multiplying

configuration.

The DAC2904 is available in a TQFP-48 package,

and is specified over the extended industrial

temperature range of –40°C to +85°C.