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AD9267 Scheda tecnica(PDF) 8 Page - Analog Devices

Il numero della parte AD9267
Spiegazioni elettronici  10 MHz Bandwidth, 640 MSPS Dual Continuous Time Sigma-Delta Modulator
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

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AD9267
Rev. 0 | Page 8 of 24
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
NOTES
1. DNC = DO NOT CONNECT.
2. THE EXPOSED PAD MUST BE SOLDERED TO THE GROUND PLANE FOR THE
LFCSP PACKAGE. SOLDERING THE EXPOSED PADDLE TO THE PCB
INCREASES THE RELIABILITY OF THE SOLDER JOINTS, MAXIMIZING
THE THERMAL CAPACITY OF THE PACKAGE.
PIN 1
INDICATOR
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CLK–
CVDD
PDWNA
PDWNB
PLL_LOCKED
DVDD
DGND
DRVDD
D0–B
D0+B
D1–B
D1+B
D2–B
D2+B
D3–B
D3+B
SCLK/PLLMULT0
SDIO/PLLMULT1
PLLMULT2
PLLMULT3
PLLMULT4
DVDD
DGND
DRVDD
D3+A
D3–A
D2+A
D2–A
D1+A
D1–A
D0+A
D0–A
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
AD9267
TOP VIEW
(Not to Scale)
Figure 3. Pin Configuration
Table 7. Pin Function Descriptions
Pin No.
Mnemonic
Description
1
CLK−
Differential Clock Input (−).
2
CVDD
Clock Supply (1.8 V).
3, 4
PDWNA, PDWNB
Power-Down Pins. Active high.
5
PLL_LOCKED
PLL Lock Indicator.
6, 25, 43
DVDD
Digital Supply (1.8 V).
7, 24, 42
DGND
Digital Ground.
8, 23, 41
DRVDD
Digital Output Driver Supply
9 to 16
D0−B, D0+B to D3−B, D3+B
Channel B Differential LVDS Data Output Bits. D0+B is the LSB and D3+B is the MSB.
17, 18
OR−B, OR+B
Channel B Overrange Indicator Pins.
19, 20
DCO−, DCO+
Differential Data Clock Output.
21, 22, 26 to 30
DNC
Do Not Connect.
31, 32
OR−A, OR+A
Channel A Overrange Indicator Pins.
33 to 40
D0−A, D0+A to D3−A, D3+A
Channel A Differential LVDS Data Output Bits. D0+A is the LSB and D3+A is the MSB.
44, 45, 46
PLLMULT4, PLLMULT3, PLLMULT2
PLL Mode Selection Pins.
47
SDIO/PLLMULT1
Serial Port Interface Data Input/Output/PLL Mode Selection Pins.
48
SCLK/PLLMULT0
Serial Port Interface Clock/PLL Mode Selection Pins.
49
CSB
Serial Port Interface Chip Select Pin Active Low.
50
RESET
Chip Reset.
51, 62
AGND
Analog Ground.
52, 55, 58, 61
AVDD
Analog Supply (1.8 V).
53, 54
VIN+A, VIN−A
Channel A Analog Input.
56
VREF
Voltage Reference Input.
57
CFILT
Noise Limiting Filter Capacitor.
59, 60
VIN+B, VIN−B
Channel B Analog Input.
63
CGND
Clock Ground.
64
CLK+
Differential Clock Input (+).
65
Exposed paddle (EPAD)
Analog Ground. (Pin 65 is the exposed thermal pad on the bottom of the package.) The
exposed paddle must be soldered to analog ground of the PCB to achieve optimal electrical
and thermal performance.


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