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AD9975 Fiches technique(PDF) 5 Page - Analog Devices

No de pièce AD9975
Description  Broadband Modem Mixed-Signal Front End
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

AD9975 Fiches technique(HTML) 5 Page - Analog Devices

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AD9975
–5–
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although the
AD9975 features proprietary ESD protection circuitry, permanent damage may occur on devices
subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended
to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
PIN CONFIGURATION
1
OSC IN
2
SENABLE
3
SCLK
4
SDATA
5
AVDD
6
AVSS
7
TX+
8
TX–
9
AVSS
10
FS ADJ
11
REFIO
12
CLKVDD
36
DRVSS
35
DRVDD
34
RXBOOST/SDO
33
CLKOUT2
32
RXCLK
31
TXCLK
30
TXEN
29
RXEN
28
ADIO0
27
ADIO1
26
ADIO2
25
ADIO3
AD9975
48-PIN LQFP
TOP VIEW
(Not to Scale)
PIN FUNCTION DESCRIPTION
Pin No.
Mnemonic
Function
1OSC IN
Crystal Oscillator Inverter Input
2
SENABLE
Serial Bus Enable Input
3
SCLK
Serial Bus Clock Input
4
SDATA
Serial Bus Data I/O
5, 38, 47
AVDD
Analog 3.3 V Power Supply
6, 9, 39, 42,
AVSS
Analog Ground
43, 46
7Tx+
Transmit DAC + Output
8
Tx–
Transmit DAC – Output
10
FS ADJ
DAC Full-Scale Output Current
Adjust with External Resistor
11
REFIO
DAC Band Gap Decoupling Node
12
CLKVDD
Power Supply for CLKOUT1
13
DVSS
Digital Ground
14
DVDD
Digital 3.3 V Power Supply
15–17
AGC[2:0]
AGC Control Inputs
18
CLKOUT1
Auxiliary Clock Output
19–28
ADIO[9:0]
Digital Data I/O Port
29
RXEN
ADIO Direction Control Input
30
TXEN
TX Path Enable
31
TXCLK
ADIO Sample Clock Input
32
RXCLK
ADIO Request Clock Input
33
CLKOUT2
Auxiliary Clock Output
34
RXBOOST/
External Gain Control Output/
SDO
Serial Data Output
35
DRVDD
Digital I/O 3.3 V Power Supply
36
DRVSS
Digital I/O Ground
37
RESET
Reset Input
40, 41
REFB, REFT ADC Reference Decoupling Node
44
Rx+
Receive Path + Input
45
Rx–
Receive Path – Input
48
XTAL
Crystal Oscillator Inverter Output
ORDERING GUIDE
Model
Temperature Range
Package Description
Package Option
AD9975ABST
–40ºC to +85ºC
48-Lead LQFP
ST-48
AD9975ABSTEB
–40ºC to +85ºC
AD9975 EVAL Board
AD9975ABSTRL
–40ºC to +85ºC
AD9975ABST Reel


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