参数资料
型号: AD826ARZ
厂商: Analog Devices Inc
文件页数: 5/15页
文件大小: 0K
描述: IC OPAMP VF 50MHZ DUAL LP 8SOIC
标准包装: 98
放大器类型: 电压反馈
电路数: 2
转换速率: 350 V/µs
增益带宽积: 50MHz
-3db带宽: 50MHz
电流 - 输入偏压: 3.3µA
电压 - 输入偏移: 500µV
电流 - 电源: 6.6mA
电流 - 输出 / 通道: 50mA
电压 - 电源,单路/双路(±): 5 V ~ 36 V,±2.5 V ~ 18 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOIC
包装: 管件
产品目录页面: 769 (CN2011-ZH PDF)
AD826
–13–
HIGH PERFORMANCE ADC BUFFER
Figure 42 is a schematic of a 12-bit high speed analog-to-digital
converter. The AD826 dual op amp takes a single ended input
and drives the AD872 A/D converter differentially, thus reduc-
ing 2nd harmonic distortion. Figure 43 is a FFT of a 1 MHz
input, sampled at 10 MHz with a THD of –78 dB. The AD826
can be used to amplify low level signals so that the entire range
of the converter is used. The ability of the AD826 to perform on
a
±5 volt supply or even with a single 5 volts combined with its
rapid settling time and ability to deliver high current to compli-
cated loads make it a very good flash A/D converter buffer as
well as a very useful general purpose building block.
VS
1/2
AD826
52.5
0.1 F
1k
AD872
12-BIT
10MSPS
ADC
VINA
VINB
50
COAX
CABLE
VIN
500mV
p-p MAX
COMMON
100 F
25V
1/2
AD826
–VS
0.1 F
100 F
25V
–VS
VS
–5V
5V
Figure 42. A Differential Input Buffer for High
Bandwidth ADCs
Figure 43. FFT, Buffered A/D Converter
REV. C
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