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AD9218BST-80:  10位、40/65/80/105 MSPS、3 V、双核ADC

The AD9218 is a dual 10-bit monolithic sampling analog-to-digital converter with on-chip track-and-hold circuits. The product is low cost, low power, and is small and easy to use. The AD9218 operates at a 105 MSPS conversion rate with outstanding dynamic performance over its full operating range. Each channel can be operated independently.

The ADC requires only a single 3.0 V (2.7 V to 3.6 V) power supply and a clock for full operation. No external reference or driver components are required for many applications. The digital outputs are TTL/CMOS compatible and a separate output power supply pin supports interfacing with 3.3 V or 2.5 V logic.

The clock input is TTL/CMOS compatible and the 10-bit digital outputs can be operated from 3.0 V (2.5 V to 3.6 V) supplies. User-selectable options offer a combination of power-down modes, digital data formats, and digital data timing schemes. In power-down mode, the digital outputs are driven to a high impedance state.

AD9218是一款双核10位单芯片采样模数转换器（ADC）,内置片内采样保持电路,具有低成本、低功耗、小尺寸和易于使用等特性。它采用105 MSPS转换速率工作,在整个工作范围内都具有出色的动态性能。每个通道均可以独立工作。

该ADC只需一个3.0 V（2.7 V至3.6 V）单电源和一个时钟就能发挥全部效能。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,单独的输出电源引脚支持3.3 V或2.5 V逻辑接口。

时钟输入为TTL/CMOS兼容,10位数字输出可以采用3.0 V（2.5 V至3.6 V）电源供电。用户可选项提供各种省电模式、数字数据格式和数字数据定时方案组合。在省电模式下,数字输出被置为高阻状态。

产品焦点 Product Highlights

1. Low Power. Only 275 mW power dissipation per channel at 105 MSPS. Other speed grades proportionally scaled down while maintaining high ac performance.
2. Pin Compatibility Upgrade. Allows easy migration from 8-bit to 10-bit devices. Pin compatible with the 8-bit AD9288 dual ADC.
3. Easy to Use. On-chip reference and user controls provide flexibility in system design.
4. High Performance. Maintains 54 dB SNR at 105 MSPS with a Nyquist input.
5. Channel Crosstalk. Very low at –75 dBc. 6. Fabricated on an Advanced CMOS Process. Available in a 48-lead low profile quad flat package (7 mm × 7 mm LQFP) specified over the industrial temperature range (−40°C to +85°C).
6. 低功耗：每通道功耗仅275 mW （105 MSPS）；在保持高交流性能的同时,其它速度等级的功耗按比例降低。
7. 引脚兼容升级：8位器件可轻松升级至10位器件,与8位AD9288双核ADC引脚兼容。
8. 易于使用：片内基准电压和用户控制选项使系统设计更灵活。
9. 高性能：在Nyquist输入频率时,信噪比保持在54 dB（105 MSPS）。
10. 通道串扰极低：-75 dBc。
11. 采用先进的CMOS工艺制造,提供48引脚薄型四方扁平封装（7 mm × 7 mm LQFP）,额定温度范围为-40°C至+85°C工业温度范围。

产品应用领域 Applications

• 电池供电仪表
• 手持式示波表
• 低成本数字示波器
• I&Q通信
• 超声设备

AD9218BST-80 特点

• Dual 10-bit, 40 MSPS, 65 MSPS, 80 MSPS, and 105 MSPS ADC
• Low power: 275 mW at 105 MSPS per channel
• On-chip reference and track-and-hold
• 300 MHz analog bandwidth each channel
• SNR = 57 dB @ 41 MHz, Encode = 80 MSPS
• 1 V p-p or 2 V p-p analog input range each channel
• 3.0 V single-supply operation (2.7 V to 3.6 V)
• Power-down mode for single-channel operation
• Twos complement or offset binary output mode
• Output data alignment mode
• Pin compatible with the 8-bit AD9288
  –75 dBc crosstalk between channels
• 双核、10位、40 MSPS/65 MSPS/80 MSPS/105 MSPS ADC
• 低功耗：每通道275 mW （105 MSPS）
• 片内基准电压源和采样保持
• 每通道300 MHz模拟带宽
• 信噪比（SNR）：
  57 dB（41 MHz,编码速率 = 80 MSPS）
• 每通道模拟输入范围：1 V p-p或2 V p-p
• 3.0 V单电源供电（2.7 V至3.6 V）
• 提供单通道工作省电模式
• 输出模式：二进制补码或偏移二进制
• 输出数据对准模式
• 与8位AD9288引脚兼容
• 通道间串扰：–75 dBc

AD9218BST-80 技术指标

Resolution (Bits)	10bit	Interface	Par
T-Put Rate	105000000SPS	Ain Range	1 V p-p
# Chan	2	SNR (dB)	59.7dB
Supply V	Single(+3),Single(+3.3)	Pkg Type	QFP
Pwr Diss (max)	525mW	--	--

AD9218 芯片订购指南

产品型号	产品状态	封装	引脚	温度范围
AD9218BST-105	Prodn	48 ld LQFP	48	Ind
AD9218BST-40	Prodn	48 ld LQFP	48	Ind
AD9218BST-65	Prodn	48 ld LQFP	48	Ind
AD9218BST-80	Prodn	48 ld LQFP	48	Ind
AD9218BST-RL105	Prodn	48 ld LQFP	48	Ind
AD9218BST-RL40	Prodn	48 ld LQFP	48	Ind
AD9218BST-RL65	Prodn	48 ld LQFP	48	Ind
AD9218BST-RL80	Prodn	48 ld LQFP	48	Ind
AD9218BSTZ-105	Prodn	48 ld LQFP	48	Ind
AD9218BSTZ-40	Prodn	48 ld LQFP	48	Ind
AD9218BSTZ-65	Prodn	48 ld LQFP	48	Ind
AD9218BSTZ-80	Prodn	48 ld LQFP	48	Ind
AD9218BSTZ-RL105	Prodn	48 ld LQFP	48	Ind
AD9218BSTZ-RL40	Prodn	48 ld LQFP	48	Ind
AD9218BSTZ-RL65	Prodn	48 ld LQFP	48	Ind
AD9218BSTZ-RL80	Prodn	48 ld LQFP	48	Ind

AD9218BST-80 应用技术支持与电子电路设计开发资源下载

1. AD9218 数据手册DataSheet下载 . pdf
2. Analog Devices, Inc.ADI 美国模拟器件公司产品订购手册 .pdf
3. ADC模数转换器选型指南 . pdf