參數(shù)資料
型號(hào): AD9653BCPZRL7-125
廠商: Analog Devices Inc
文件頁(yè)數(shù): 17/40頁(yè)
文件大?。?/td> 0K
描述: IC ADC 16BIT 125MSPS SRL 48LFCSP
標(biāo)準(zhǔn)包裝: 750
位數(shù): 16
采樣率(每秒): 125M
數(shù)據(jù)接口: LVDS,串行,SPI?
轉(zhuǎn)換器數(shù)目: 4
功率耗散(最大): 708mW
電壓電源: 模擬和數(shù)字
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 48-WFQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 48-LFCSP-WQ(7x7)
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 4 個(gè)差分,單極
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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