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AD8284 Fiches technique(PDF) 8 Page - Analog Devices

No de pièce AD8284
Description  Radar Receive Path AFE - 4-Channel Mux
Download  28 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

AD8284 Fiches technique(HTML) 8 Page - Analog Devices

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AD8284
Data Sheet
Rev. D | Page 8 of 28
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Figure 3. Pin Configuration
Table 6. Pin Function Descriptions
Pin No.
Mnemonic
Description
1
NC
No Connection. Tie NC to any potential.
2
SFLAG
Saturation Flag.
3
PDWN
Full Power-Down. A logic high on PDWN overrides the SPI and powers down the part; a logic low allows
selection through the SPI.
4
DVDD18
1.8 V Digital Supply.
5
SCLK
Serial Clock.
6
CS
Chip Select.
7
SDI
Serial Data Input.
8
SDO
Serial Data Output.
9
AUX
Auxiliary Channel. A logic high on AUX switches the AUX channel to ADC (INADC+/INADC−).
10
MUX[0]
Digital Control for Mux Channel Selection.
11
MUX[1]
Digital Control for Mux Channel Selection.
12
ZSEL
Input Impedance Select. A logic high on ZSEL overrides the SPI and sets the input impedance to 200 kΩ; a
logic low allows selection through the SPI.
13
TEST1
Test. Do not use the TEST1 pin; tie TEST1 to ground.
14
TEST2
Test. Do not use the TEST2 pin; tie TEST2 to ground.
15
DVDD33SPI
3.3 V Digital Supply, SPI Port.
16
NC
No Connection. Tie NC to any potential.
17
NC
No Connection. Tie NC to any potential.
18
AVDD18
1.8 V Analog Supply.
19
AVDD33
3.3 V Analog Supply.
20
INA+
Positive Mux Analog Input for Channel A.
21
INA−
Negative Mux Analog Input for Channel A.
22
INB+
Positive Mux Analog Input for Channel B.
23
INB−
Negative Mux Analog Input for Channel B.
PIN 1
AD8284
TOP VIEW
(Not to Scale)
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29 30 31
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64
NC
SFLAG
PDWN
DVDD18
SCLK
SDI
SDO
CS
AUX
MUX[0]
MUX[1]
ZSEL
TEST1
TEST2
DVDD33SPI
NC
NC
AGND
AVDD18ADC
TEST3
ANOUT
APOUT
RBIAS
VREF
BAND
AVDD33REF
DVDD33CLK
CLK–
CLK+
DVDD18CLK
TEST4
NC
NOTES
1. TIE THE EXPOSED PAD ON THE BOTTOM SIDE TO THE ANALOG GROUND PLANE.
2. NC = NO CONNECTION. TIE NC TO ANY POTENTIAL.


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