参数资料
型号: AD9653-125EBZ
厂商: Analog Devices Inc
文件页数: 17/40页
文件大小: 0K
描述: BOARD EVAL FOR AD9653
标准包装: 1
ADC 的数量: 4
位数: 16
采样率(每秒): 125M
数据接口: LVDS,串行,SPI?
输入范围: 2 Vpp
在以下条件下的电源(标准): 673mW @ 125MSPS
工作温度: -40°C ~ 85°C
已用 IC / 零件: AD9653
已供物品:
AD9653
Data Sheet
Rev. 0 | Page 24 of 40
Figure 56. Differential Double Balun Input Configuration for Baseband Applications
Figure 57. Differential Transformer-Coupled Configuration
for Baseband Applications
If the internal reference of the AD9653 is used to drive multiple
converters to improve gain matching, the loading of the reference
by the other converters must be considered. Figure 58 and
Figure 59 show how the internal reference voltage is affected by
loading.
Figure 58. VREF = 1.0 V Error vs. Load Current
Figure 59. VREF =1.3 V Error vs. Load Current
External Reference Operation
The use of an external reference may be necessary to enhance
the gain accuracy of the ADC or improve thermal drift charac-
teristics. Figure 60 and Figure 61 show the typical drift characteris-
tics of the internal reference in 1.0 V mode and programmable
1.3 V mode, respectively.
ADC
R
0.1F
2V p-p
VCM
C
*C1
C
R
0.1F
33
200
33
VIN+x
VIN–x
ET1-1-I3
C
5pF
R
*C1 IS OPTIONAL
10538-
056
2V p-p
R
*C1
*C1 IS OPTIONAL
49.9Ω
0.1μF
ADT1-1WT
1:1 Z RATIO
VIN–x
ADC
VIN+x
*C1
C
VCM
33
200
0.1F
5pF
10538-
057
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
–3.5
–4.0
–4.5
–5.0
0
3.0
2.5
2.0
1.5
1.0
0.5
V
RE
F
E
RRO
R
(
%)
LOAD CURRENT (mA)
INTERNAL VREF = 1.0V
10538-
058
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
0
3.0
2.5
2.0
1.5
1.0
0.5
V
RE
F
E
RRO
R
(
%)
LOAD CURRENT (mA)
INTERNAL VREF = 1.3V
10538-
059
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