参数资料
型号: AD8032BR-REEL7
厂商: Analog Devices Inc
文件页数: 9/20页
文件大小: 0K
描述: IC OPAMP VF R-R DUAL LP 8SOIC
标准包装: 750
放大器类型: 电压反馈
电路数: 2
输出类型: 满摆幅
转换速率: 35 V/µs
-3db带宽: 80MHz
电流 - 输入偏压: 450nA
电压 - 输入偏移: 500µV
电流 - 电源: 900µA
电流 - 输出 / 通道: 15mA
电压 - 电源,单路/双路(±): 2.7 V ~ 12 V,±1.35 V ~ 6 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-SO
包装: 带卷 (TR)
Data Sheet
AD8031/AD8032
Rev. G | Page 17 of 20
Figure 50 and Figure 51 show the output signal swing and
frequency spectrum at 500 kHz. At this frequency, the output
signal (at VOUT), which has a peak-to-peak swing of 1.95 V
(50 mV to 2 V), has a THD of 68 dB (SFDR = 77 dB).
2V
50mV
10
0%
100
90
0.5V
1s
01056-
050
Figure 50. Output Signal Swing of Low Distortion Line Driver at 500 kHz
STOP 5MHz
V
E
RT
ICAL
S
CAL
E
(
10d
B/
DI
V
)
START 0Hz
+9dBm
01056-
051
Figure 51. THD of Low Distortion Line Driver at 500 kHz
Figure 52 and Figure 53 show the output signal swing and
frequency spectrum at 2 MHz. As expected, there is some
degradation in signal quality at the higher frequency. When the
output signal has a peak-to-peak swing of 1.45 V (swinging
from 50 mV to 1.5 V), the THD is 55 dB (SFDR = 60 dB).
This circuit could also be used to drive the analog input of a
single-supply, high speed ADC whose input voltage range is
referenced to ground (for example, 0 V to 2 V or 0 V to 4 V). In
this case, a back termination resistor is not necessary (assuming
a short physical distance from transistor to ADC); therefore, the
emitter of the external transistor would be connected directly to
the ADC input. The available output voltage swing of the circuit
would therefore be doubled.
50mV
10
0%
100
90
1.5V
0.2V
200ns
01056-
052
Figure 52. Output Signal Swing of Low Distortion Line Driver at 2 MHz
V
E
RT
ICAL
S
CAL
E
(
10d
B/
DI
V
)
+7dBm
START 0Hz
STOP 20MHz
01056-
053
Figure 53. THD of Low Distortion Line Driver at 2 MHz
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