参数资料
型号: AD9944KCPZRL
厂商: Analog Devices Inc
文件页数: 7/20页
文件大小: 0K
描述: IC CCD SIGNAL PROCESSOR 32-LFCSP
标准包装: 5,000
类型: CCD 信号处理器,12 位
输入类型: 逻辑
输出类型: 逻辑
接口: 3 线串口
安装类型: 表面贴装
封装/外壳: 32-VFQFN 裸露焊盘,CSP
供应商设备封装: 32-LFCSP-VQ(5x5)
包装: 带卷 (TR)
Data Sheet
AD9943/AD9944
A/D CONVERTER
The ADC uses a 2 V input range. Better noise performance
results from using a larger ADC full-scale range. The ADC uses
a pipelined architecture with a 2 V full-scale input for low noise
performance.
VARIABLE GAIN AMPLIFIER
The VGA stage provides a gain range of 6 dB to 40 dB,
programmable with 10-bit resolution through the serial digital
interface. The minimum gain of 6 dB is needed to match a 1 V
input signal with the ADC full-scale range of 2 V. A plot of the
VGA gain curve is shown in Figure 13.
( )
(
)
dB
3
.
5
dB
035
.
0
dB
+
×
=
Code
VGA
Gain
VGA
Figure 13. VGA Gain Curve
VGA GAIN REGISTER MODE
42
12
383
127
VGA
GAIN
(dB)
0
30
255
36
34
18
6
511
639
767
895
1023
02905-B-014
Rev. C | Page 15 of 20
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