AD9481 8位、250 MSPS、3.3 V ADC

AD9481: 8位、250 MSPS、3.3 V ADC

AD9481是一款8位单芯片模数转换器（ADC）,专门针对高速和低功耗进行了优化。该产品尺寸小且易于使用,转换速率为250 MSPS,在整个工作范围内都具有出色的线性度和动态性能。为使系统成本和功耗达到最低,AD9481内置了一个基准电压源和采样保持电路。用户只需要提供一个3.3 V电源和一个差分编码时钟。对于大多数应用来说,无需外部基准电压源或驱动器件。

数字输出为TTL/CMOS兼容,可选择二进制补码或二进制输出格式。各输出数据位以交错方式与输出时钟一同提供,简化了数据采集。AD9481采用44引脚表面贴装无铅封装（TQFP-44）,额定温度范围为−40°C至+85°C工业温度范围。

The AD9481 is an 8-bit, monolithic analog-to-digital converter (ADC) optimized for high speed and low power consumption. Small in size and easy to use, the product operates at a 250 MSPS conversion rate, with excellent linearity and dynamic performance over its full operating range.

To minimize system cost and power dissipation, the AD9481 includes an internal reference and track-and-hold circuit. The user only provides a 3.3 V power supply and a differential encode clock. No external reference or driver components are required for many applications.

The digital outputs are TTL/CMOS-compatible with an option of twos complement or binary output format. The output data bits are provided in an interleaved fashion along with output clocks that simplifies data capture.The AD9481 is available in a Pb-free, 44-lead, surface-mount package (TQFP-44) specified over the industrial temperature range (−40°C to +85°C).

AD9481 特点

DNL = ±0.35 LSB
INL = ±0.26 LSB
Single 3.3 V supply operation (3.0 V to 3.6 V)
Power dissipation of 439 mW at 250 MSPS
1 V p-p analog input range
Internal 1.0 V reference
Single-ended or differential analog inputs
De-multiplexed CMOS outputs
Power-down mode
Clock duty cycle stabilizer
微分非线性（DNL）：±0.35 LSB
积分非线性（INL）：±0.26 LSB
3.3 V单电源供电（3.0 V至3.6 V）
功耗：439 mW（250 MSPS）
1 V p-p模拟输入范围
1.0 V内部基准电压
单端或差分模拟输入
解复用CMOS输出
省电模式
时钟占空比稳定器

AD9481 技术指标

Resolution (Bits): 8bit
# Chan: 1
Sample Rate: 250MSPS
Interface: Par
Analog Input Type: Diff-Uni
Ain Range: (Vref) p-p,1 V p-p
ADC Architecture: Pipelined
Pkg Type: QFP

AD9481 应用领域

数字示波器
仪器仪表与测量
通信点对点无线电 ;数字预失真环路

AD9481 亮点

Superior linearity. A DNL of ±0.35 makes the AD9481 suitable for many instrumentation and measurement applications
Power-down mode. A power-down function may be exercised to bring total consumption down to 15 mW.
De-multiplexed CMOS outputs allow for easy interfacing with low cost FPGAs and standard logic.
出色的线性度：微分非线性（DNL）仅为±0.35,使AD9481适合大多数仪器仪表与测量应用。
省电模式：可通过进入省电模式,将总功耗降至15 mW。
通过解复用CMOS输出,能够与低成本FPGA和标准逻辑实现轻松接口。

AD9481 功能框图

AD9481 芯片订购指南

产品型号	产品状态	封装	引脚	温度范围
AD9481-PCB	量产	评估板	48	待定
AD9481-PCBZ	量产	评估板	48	待定
AD9481BSUZ-250	量产	44 ld TQFP (10x10mm)	44	待定