AD8021ARMZ

更新时间： 2024-02-12 12:19:02

品牌	Logo	应用领域
亚德诺 - ADI		放大器
页数	文件大小	规格书
28页	594K
描述
Low Noise, High Speed Amplifier for 16-Bit Systems

阅读下载

中文翻译

获取价格

技术参数
数据手册
替代型号

如果您发现信息不准确，欢迎纠错

AD8021ARMZ 技术参数

是否无铅：	含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	SOIC
包装说明：	SOP,	针数：	8
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.31.00.01	风险等级：	1.68
放大器类型：	OPERATIONAL AMPLIFIER	最大平均偏置电流 (IIB)：	10.5 µA
标称共模抑制比：	98 dB	最大输入失调电压：	1000 µV
JESD-30 代码：	R-PDSO-G8	JESD-609代码：	e3
长度：	4.9 mm	湿度敏感等级：	1
负供电电压上限：	-13.2 V	标称负供电电压 (Vsup)：	-5 V
功能数量：	1	端子数量：	8
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	SOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	260	认证状态：	Not Qualified
座面最大高度：	1.75 mm	标称压摆率：	420 V/us
子类别：	Operational Amplifier	供电电压上限：	13.2 V
标称供电电压 (Vsup)：	5 V	表面贴装：	YES
技术：	BIPOLAR	温度等级：	INDUSTRIAL
端子面层：	Matte Tin (Sn)	端子形式：	GULL WING
端子节距：	1.27 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	30	宽度：	3.9 mm
Base Number Matches：	1

AD8021ARMZ 数据手册

AD8021

Table 8. Summary of ADC Driver Performance

(f_C= 100 kHz, V_OUT= 20 V p-p)

DRIVING 16-BIT ADCs

Low noise and adjustable compensation make the AD8021

especially suitable as a buffer/driver for high resolution ADCs.

Parameter

Measurement

Unit

dBc

Second Harmonic Distortion

−92.6

As seen in Figure 19, the harmonic distortion is better than 90 dBc

at frequencies between 100 kHz and 1 MHz. This is an

Third Harmonic Distortion

THD

SFDR

−86.4

−84.4

+5.4

advantage for complex waveforms that contain high frequency

information, because the phase and gain integrity of the sampled

waveform can be preserved throughout the conversion process.

The increase in loop gain results in improved output regulation

and lower noise when the converter input changes state during

a sample. This advantage is particularly apparent when using

16-bit high resolution ADCs with high sampling rates.

DIFFERENTIAL DRIVER

The AD8021 is uniquely suited as a low noise differential driver

for many ADCs, balanced lines, and other applications requiring

differential drive. If pairs of internally compensated op amps are

configured as inverter and follower, the noise gain of the inverter

is higher than that of the follower section, resulting in an

imbalance in the frequency response (see Figure 66).

Figure 63 shows a typical ADC driver configuration. The

AD8021 is in an inverting gain of −7.±, f_Cis 6± kHz, and its

output voltage is 10 V p-p. The results are listed in Table 7.

A better solution takes advantage of the external compensation

feature of the AD8021. By reducing the C_COMPvalue of the

inverter, its bandwidth can be increased to match that of the

follower, avoiding compromises in gain bandwidth and phase

delay. The inverting and noninverting bandwidths can be

closely matched using the compensation feature, thus

minimizing distortion.

+12V

+5V

590Ω

AD8021

–

10pF

AD7665

570kSPS

200Ω

1.5kΩ

–12V

Figure 6± illustrates an inverter-follower driver circuit operating

at a gain of 2, using individually compensated AD8021s. The

values of feedback and load resistors were selected to provide a

total load of less than 1 kΩ, and the equivalent resistances seen

at each op amp’s inputs were matched to minimize offset voltage

and drift. Figure 67 is a plot of the resulting ac responses of

driver halves.

50Ω

56pF

Figure 63. Inverting ADC Driver, Gain = −7.5, f_C= 65 kHz

Table 7. Summary of ADC Driver Performance (f_C= 65 kHz,

_OUT= 10 V p-p)

Parameter

Measurement

−101.3

−109.5

−100.0

+100.3

Unit

dBc

249Ω

G = +2

49.9Ω

Second Harmonic Distortion

Third Harmonic Distortion

THD

SFDR

AD8021

–

–V

7pF

499Ω

OUT1

Figure 64 shows another ADC driver connection. The circuit

was tested with a noninverting gain of 10.1 and an output

voltage of approximately 20 V p-p for optimum resolution and

noise performance. No filtering was used. An FFT was

performed using Analog Devices evaluation software for the

AD766± 16-bit converter. The results are listed in Table 8.

1kΩ

232Ω

G = –2

AD8021

–

OUT2

1kΩ

–V

5pF

332Ω

664Ω

+12V

+5V

Figure 65. Differential Amplifier

50Ω

AD8021

50Ω

–

AD7665

570kSPS

750Ω

–12V

ADC

82.5Ω

OPTIONAL C

Figure 64. Noninverting ADC Driver, Gain = 10, f_C= 100 kHz

Rev. F | Page 22 of 28

1...19 20 212223 24 25...28

中文翻译

下载PDF

AD8021ARMZ 替代型号

型号	品牌	替代类型	描述	数据表
AD8021ARMZ-REEL7	ADI	类似代替	Low Noise, High Speed Amplifier for 16-Bit Systems
AD8021ARMZ-REEL	ADI	类似代替	Low Noise, High Speed Amplifier for 16-Bit Systems
AD8021ARM	ADI	类似代替	Low Noise, High Speed Amplifier for 16-Bit Systems

与AD8021ARMZ相关器件

型号	品牌	获取价格	描述	数据表
AD8021ARMZ-REEL	ADI	获取价格	Low Noise, High Speed Amplifier for 16-Bit Systems
AD8021ARMZ-REEL7	ADI	获取价格	Low Noise, High Speed Amplifier for 16-Bit Systems
AD8021AR-REEL	ADI	获取价格	Low Noise, High Speed Amplifier for 16-Bit Systems
AD8021AR-REEL7	ADI	获取价格	Low Noise, High Speed Amplifier for 16-Bit Systems
AD8021ARZ	ADI	获取价格	Low Noise, High Speed Amplifier for 16-Bit Systems
AD8021ARZ-REEL	ADI	获取价格	Low Noise, High Speed Amplifier for 16-Bit Systems
AD8021ARZ-REEL7	ADI	获取价格	Low Noise, High Speed Amplifier for 16-Bit Systems
AD8022	ADI	获取价格	Dual High-Speed Low-Noise Op Amps
AD8022_05	ADI	获取价格	Dual High Speed, Low Noise Op Amp
AD80220BBCZ	ADI	获取价格	Dual-Channel, 14-Bit CCD Signal Processor and Precision Timing Core

与AD8021ARMZ相关文章

压敏电阻器在直流电路中的过压保护应用探讨
2024-06-07

1
电感耐压值及其与电感大小的关系
2024-06-07

4
CNY17F光耦合器：特性、应用、封装、引脚功能及替换型号解析
2024-06-07

3
DS1307资料解析：特性、引脚说明、替代推荐
2024-06-07

1

产品中心

服务支持

精选活动

关于我们

帮助中心

AD8021ARMZ

AD8021ARMZ 技术参数

AD8021ARMZ 数据手册

AD8021ARMZ 替代型号

与AD8021ARMZ相关器件

与AD8021ARMZ相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

AD8021ARMZ

AD8021ARMZ 技术参数

AD8021ARMZ 数据手册

AD8021ARMZ 替代型号

与AD8021ARMZ相关器件

与AD8021ARMZ相关文章

您还可以找

您在本页遇到什么问题？