參數(shù)資料
型號(hào): EVAL-AD7693CBZ
廠商: Analog Devices Inc
文件頁(yè)數(shù): 5/24頁(yè)
文件大?。?/td> 0K
描述: BOARD EVALUATION FOR AD7693
標(biāo)準(zhǔn)包裝: 1
系列: PulSAR®
ADC 的數(shù)量: 1
位數(shù): 16
采樣率(每秒): 500k
數(shù)據(jù)接口: 串行
輸入范圍: ±VREF
在以下條件下的電源(標(biāo)準(zhǔn)): 18mW @ 500kSPS
工作溫度: -40°C ~ 85°C
已用 IC / 零件: AD7693
已供物品:
相關(guān)產(chǎn)品: AD7693BRMZRL7-ND - IC ADC 16BIT 500KSPS 10-MSOP
AD7693BCPZRL7TR-ND - IC ADC 16BIT 500KSPS 10-LFCSP
AD7693BRMZ-ND - IC ADC 16BIT 500KSPS 10-MSOP
AD7693BCPZRL-ND - IC ADC 16BIT 500KSPS 10LFCSP
AD7693
Rev. A | Page 13 of 24
Transfer Functions
The ideal transfer characteristic for the AD7693 is shown in
100...000
100...001
100...010
011...101
011...110
011...111
ADC
CO
DE
(
T
W
O
S
CO
M
P
L
E
M
E
NT
)
ANALOG INPUT
+FSR – 1.5LSB
+FSR – 1LSB
–FSR + 1LSB
–FSR
–FSR + 0.5LSB
0
63
94
-0
25
Figure 26. ADC Ideal Transfer Function
Table 7. Output Codes and Ideal Input Voltages
Description
Analog Input
VREF = 5 V
Digital Output
Code (Hex)
FSR 1 LSB
+4.999847 V
Midscale + 1 LSB
+152.6 μV
0x0001
Midscale
0 V
0x0000
Midscale 1 LSB
152.6 μV
0xFFFF
FSR + 1 LSB
4.999847 V
0x8001
FSR
5 V
0x80002
1 This is also the code for an overranged analog input (VIN+ VIN above VREF VGND).
2 This is also the code for an underranged analog input (VIN+ VIN below VGND).
TYPICAL CONNECTION DIAGRAM
Figure 27 shows an example of the recommended connection
diagram for the AD7693 when multiple supplies are available.
AD7693
REF
GND
VDD
IN–
IN+
VIO
SDI
SCK
SDO
CNV
3- OR 4-WIRE INTERFACE5
100nF
5V
10F2
V+
V–
1.8V TO VDD
REF1
0TO VREF
2.7nF
4
V+
V–
VREF TO 0
2.7nF
ADA4841-23
4
1SEE REFERENCE SECTION FOR REFERENCE SELECTION.
2CREF IS USUALLY A 10F CERAMIC CAPACITOR (X5R).
3SEE TABLE 8 FOR ADDITIONAL RECOMMENDED AMPLIFIERS.
4OPTIONAL FILTER. SEE ANALOG INPUT SECTION.
5SEE THE DIGITAL INTERFACE SECTION FOR MOST CONVENIENT INTERFACE MODE.
33
0
63
94
-0
26
Figure 27. Typical Application Diagram with Multiple Supplies
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