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AD9121 Arkusz danych(PDF) 10 Page - Analog Devices

Numer części AD9121
Szczegółowy opis  TxDAC Digital-to-Analog Converter
Download  61 Pages
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Producent  AD [Analog Devices]
Strona internetowa  http://www.analog.com
Logo AD - Analog Devices

AD9121 Arkusz danych(HTML) 10 Page - Analog Devices

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Data Sheet
AD9121
Rev. B | Page 9 of 60
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CVDD18
DACCLKP
DACCLKN
CVSS
FRAMEP
FRAMEN
IRQ
D13P
D13N
NC
IOVDD
DVDD18
D12P
D12N
D11P
D11N
17
D10P
18
D10N
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
RESET
CS
SCLK
SDIO
SDO
DVDD18
NC
NC
NC/BYTELSBN
NC/BYTELSBP
DVSS
DVDD18
D0N
D0P
D1N
D1P
D2N
D2P
PIN 1
INDICATOR
AD9121
TOP VIEW
(Not to Scale)
NOTES
1. EXPOSED PAD (EPAD) MUST BE SOLDERED TO THE GROUND PLANE (AVSS).
THE EPAD PROVIDES AN ELECTRICAL, THERMAL, AND MECHANICAL
CONNECTION TO THE BOARD.
2. PINS LABELED NC CAN BE ALLOWED TO FLOAT, BUT IT IS BETTER TO CONNECT
THESE PINS TO GROUND. AVOID ROUTING HIGH SPEED SIGNALS THROUGH
THESE PINS BECAUSE NOISE COUPLING MAY RESULT.
Figure 3. Pin Configuration
Table 8. Pin Function Descriptions
Pin No.
Mnemonic
Description
1
CVDD18
1.8 V Clock Supply. Supplies clock receivers, clock distribution, and PLL circuitry.
2
DACCLKP
DAC Clock Input, Positive.
3
DACCLKN
DAC Clock Input, Negative.
4
CVSS
Clock Supply Common.
5
FRAMEP
Frame Input, Positive. This pin must be tied to DVSS if not used.
6
FRAMEN
Frame Input, Negative. This pin must be tiedto DVDD18 if not used.
7
IRQ
Interrupt Request. Open-drain, active low output. Connect an external pull-up to IOVDD through a 10 kΩ
resistor.
8
D13P
Data Bit 13 (MSB), Positive.
9
D13N
Data Bit 13 (MSB), Negative.
10
NC
This pin is not connected internally (see Figure 3).
11
IOVDD
Supply Pinfor Serial Port I/O Pins, RESET, and IRQ. 1.8 V to 3.3 V can be suppliedto this pin.
12
DVDD18
1.8 V Digital Supply. Supplies power to digital core and digital data ports.
13
D12P
Data Bit 12, Positive.
14
D12N
Data Bit 12, Negative.
15
D11P
Data Bit 11, Positive.
16
D11N
Data Bit 11, Negative.
17
D10P
Data Bit 10, Positive.
18
D10N
Data Bit 10, Negative.
19
D9P
Data Bit 9, Positive.
20
D9N
Data Bit 9, Negative.
21
D8P
Data Bit 8, Positive.
22
D8N
Data Bit 8, Negative.


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