Datasheet > ADA4937-2YCPZ-R7

ADA4937-2YCPZ-R7

更新时间： 2024-02-10 09:19:11

品牌	Logo	应用领域
亚德诺 - ADI		驱动接口集成电路驱动器
页数	文件大小	规格书
28页	629K
描述
Ultralow Distortion Differential ADC Driver (Dual)

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技术参数
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ADA4937-2YCPZ-R7 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	QFN
包装说明：	4 X 4 MM, ROHS COMPLIANT, MO-220VGGD-2, LFCSP-24	针数：	24
Reach Compliance Code：	unknown	风险等级：	5.5
差分输出：	YES	驱动器位数：	2
输入特性：	DIFFERENTIAL	接口集成电路类型：	LINE DRIVER
接口标准：	GENERAL PURPOSE	JESD-30 代码：	S-XQCC-N24
JESD-609代码：	e3	长度：	4 mm
湿度敏感等级：	3	功能数量：	2
端子数量：	24	最高工作温度：	105 °C
最低工作温度：	-40 °C	封装主体材料：	UNSPECIFIED
封装代码：	HVQCCN	封装形状：	SQUARE
封装形式：	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	峰值回流温度（摄氏度）：	260
座面最大高度：	1 mm	最大供电电压：	5.25 V
最小供电电压：	3 V	标称供电电压：	3.3 V
表面贴装：	YES	技术：	BIPOLAR
温度等级：	INDUSTRIAL	端子面层：	MATTE TIN
端子形式：	NO LEAD	端子节距：	0.5 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	40
宽度：	4 mm	Base Number Matches：	1

ADA4937-2YCPZ-R7 数据手册

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Data Sheet

ADA4937-1/ADA4937-2

ended input impedance of 306 ꢀ, provides a 50 ꢀ termination for

the source. The additional 26 ꢀ (226 ꢀ total) at the inverting input

balances the parallel impedance of the 50 ꢀ source and the

termination resistor that drives the noninverting input. The signal

generator has a symmetric, ground-referenced bipolar output. The

V_OCMpin is connected to the CML output of the AD9230, and sets

the output common mode of the ADA4937-1/ADA4937-2 at 1.4 V.

One third of the output common-mode voltage of the amplifier is

fed back to the summing nodes, biasing −IN and +IN at ~0.5 V.

For a common-mode voltage of 1.4 V, each ADA4937-1/

ADA4937-2 output swings between 1.09 V and 1.71 V,

providing a 1.25 V p-p differential output.

3.3 V OPERATION

The ADA4937-1/ADA4937-2 provide excellent performance in

3.3 V single-supply applications. Significant power savings can

be realized when the ADA4937-1/ADA4937-2 are used in

combination with a low voltage ADC.

The circuit in Figure 67 is an example of the ADA4937-1 driving

an AD9230, 12-bit, 250 MSPS ADC that is specified to operate with

a single 1.8 V supply. The performance of the ADC is optimized

when it is driven differentially, making the best use of the signal

swing available within the 1.8 V supply. The ADA4937-1/

ADA4937-2 perform the single-ended-to-differential conversion,

common-mode level-shifting, and buffering of the driving signal.

A third-order, 125 MHz, low-pass filter between the ADA4937-1/

ADA4937-2 and the AD9230 reduces the noise bandwidth of

the amplifier and isolates the driver outputs from the ADC inputs.

The ADA4937-1/ADA4937-2 are configured with a single 3.3 V

supply and a gain of 2 V/V for a single-ended input to differential

output. The 59 ꢀ termination resistor, in parallel with the single-

453Ω

1.8V

3.3V

56nH

50Ω

33Ω

200Ω

AVDD DRVDD

VIN–

D11 TO

59Ω

OCM

AD9230

10pF

30pF

ADA4937-1

VIN+

AGND

CML

33Ω

56nH

226Ω

453Ω

Figure 67. Driving an AD9230, 12-Bit, 250 MSPS ADC

Rev. F | Page 25 of 28

1...22 23 242526 27 28

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与ADA4937-2YCPZ-R7相关器件

型号	品牌	描述	获取价格	数据表
ADA4937-2YCPZ-RL	ADI	Ultralow Distortion Differential ADC Driver	获取价格
ADA4938-1	ADI	Ultra-Low Distortion Differential ADC Driver	获取价格
ADA4938-1_06	ADI	Ultra-Low Distortion Differential ADC Driver	获取价格
ADA4938-1_07	ADI	Ultra-Low Distortion Differential ADC Driver	获取价格
ADA4938-1_15	ADI	Ultralow Distortion Differential ADC Driver	获取价格
ADA4938-1_16	ADI	Ultralow Distortion Differential ADC Driver	获取价格

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