參數(shù)資料
型號(hào): AD9284BCPZRL7-250
廠商: Analog Devices Inc
文件頁(yè)數(shù): 23/24頁(yè)
文件大?。?/td> 0K
描述: IC ADC 8BIT 250MSPS 1.8V 48LFCSP
標(biāo)準(zhǔn)包裝: 750
位數(shù): 8
采樣率(每秒): 250M
數(shù)據(jù)接口: 串行,SPI?
轉(zhuǎn)換器數(shù)目: 2
功率耗散(最大): 330mW
電壓電源: 模擬和數(shù)字
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 48-VFQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 48-LFCSP-VQ(7x7)
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 2 個(gè)差分,雙極
配用: AD9284-250EBZ-ND - BOARD EVAL FOR AD9284
AD9284
Data Sheet
Rev. A | Page 8 of 24
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
13
14
15
16
17
18
19
20
21
22
23
24
D2–
D2+
D3–
D3+
DCO
DCO
+
D4–
D4+
D5–
D5+
D6–
D6+
48
47
46
45
44
43
42
41
40
39
38
37
AV
DD
V
IN–B
V
IN+
B
AV
DD
AV
DD
VR
EF
AV
DD
V
CM
AV
DD
V
IN+
A
V
IN–A
AV
DD
1
2
3
4
5
6
7
8
9
10
11
12
AVDD
DNC
RBIAS
DNC
DRGND
DRVDD
D0– (LSB)
D0+ (LSB)
D1–
D1+
AVDD
CLK+
CLK–
CSB
SDIO/PWDN
SCLK
OE
DRGND
DRVDD
D7+ (MSB)
D7– (MSB)
35
AVDD
36
34
33
32
31
30
29
28
27
26
25
AD9284
TOP VIEW
(Not to Scale)
PIN 1
INDICATOR
NOTES
1. DNC = DO NOT CONNECT. DO NOT CONNECT TO THIS PIN.
2. THE EXPOSED PADDLE MUST BE SOLDERED TO THE PCB ANALOG
GROUND TO ENSURE PROPER FUNCTIONALITY AND HEAT
DISSIPATION, NOISE, AND MECHANICAL STRENGTH BENEFITS.
09085-
003
Figure 3. Pin Configuration
Table 8. Pin Function Descriptions
Pin No.
Mnemonic
Type
Description
ADC Power Pins
1, 2, 35, 36, 37, 40, 42,
44, 45, 48
AVDD
Supply
Analog Power Supply (1.8 V Nominal).
8, 27
DRVDD
Supply
Digital Output Driver Supply (1.8 V Nominal).
7, 28
DRGND
Ground
Digital Output Ground.
0
AGND
Ground
Analog Ground. Pin 0 is the exposed thermal pad on the bottom of the
package. This is the only ground connection, and it must be soldered to
the PCB analog ground to ensure proper functionality and heat dissipation,
noise, and mechanical strength benefits.
ADC Analog Pins
39
VIN+A
Input
Differential Analog Input Pin (+) for Channel A.
38
VINA
Input
Differential Analog Input Pin () for Channel A.
46
VIN+B
Input
Differential Analog Input Pin (+) for Channel B.
47
VINB
Input
Differential Analog Input Pin () for Channel B.
43
VREF
Input/output
Voltage Reference Input/Output.
5
RBIAS
Input/output
External Reference Bias Resistor. Connect 10 kΩ from RBIAS to AGND.
41
VCM
Output
Common-Mode Level Bias Output for Analog Inputs.
34
CLK+
Input
ADC Clock Input—True.
33
CLK
Input
ADC Clock Input—Complement.
Digital Input
29
OE
Input
Digital Enable (Active Low) to Tristate Output Data Pins.
Digital Outputs
26
D7+ (MSB)
Output
Channel A/Channel B LVDS Output Data 7—True.
25
D7 (MSB)
Output
Channel A/Channel B LVDS Output Data 7—Complement.
24
D6+
Output
Channel A/Channel B LVDS Output Data 6—True.
23
D6
Output
Channel A/Channel B LVDS Output Data 6—Complement.
22
D5+
Output
Channel A/Channel B LVDS Output Data 5—True.
21
D5
Output
Channel A/Channel B LVDS Output Data 5—Complement.
20
D4+
Output
Channel A/Channel B LVDS Output Data 4—True.
19
D4
Output
Channel A/Channel B LVDS Output Data 4—Complement.
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