参数资料
型号: ADS62P44IRGCT
厂商: Texas Instruments
文件页数: 59/78页
文件大小: 0K
描述: IC ADC 14BIT DUAL 105MSPS 64VQFN
产品培训模块: Data Converter Basics
标准包装: 1
位数: 14
采样率(每秒): 105M
数据接口: 串行,并联
转换器数目: 2
电压电源: 模拟和数字
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 64-VFQFN 裸露焊盘
供应商设备封装: 64-VQFN 裸露焊盘(9x9)
包装: 标准包装
输入数目和类型: 2 个差分,单极
其它名称: 296-23137-6
t Time s
8120
8140
8160
8180
8200
8220
8240
8260
0
2
4
6
8
10
12
14
Code
LSB
G084
Device With
Offset Cancelled
Device With
Initial Offset
Offset Loop
Enabled Here
SLAS561C
– JULY 2007 – REVISED FEBRUARY 2012
It is also possible to freeze the offset correction using the serial interface (
<OFFSET LOOP FREEZE>). Once
frozen, the offset estimation becomes inactive and the last estimated value is used for correction every clock
cycle. Note that the offset correction is disabled by default after reset.
Figure 101 shows the time response of the offset correction algorithm, after it is enabled.
Figure 101. Time Response of Offset Correction
Gain Correction
ADS62P4X has ability to make fine corrections to the ADC channel gain. The corrections can be done in steps of
0.05 dB, up to a maximum of 0.5 dB, using the register bits ( GAIN CORRECTION). Only positive corrections are
supported and the same correction applies to both the channels.
Table 23. Gain Correction Values
<GAIN CORRECTION>
AMOUNT OF CORRECTION,
D3-D2-D1-D0
dB
0000
0
0001
+0.05
0010
+0.1
0011
+0.15
0100
+0.20
0101
+0.25
0110
+0.30
0111
+0.35
1000
+0.40
1001
+0.45
1010
+0.5
Other combinations
Unused
62
Copyright
2007–2012, Texas Instruments Incorporated
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