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參數資料
| 型號： | AD9446 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 16-Bit, 80/100 MSPS ADC |
| 中文描述： | 16位，80/100 MSPS的模數轉換器 |
| 文件頁數： | 14/36頁 |
| 文件大小： | 952K |
| 代理商： | AD9446 |
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AD9446
Table 8. Pin Function Descriptions—100-Lead TQFP/EP in CMOS Mode
Pin No.
Mnemonic
1
DCS MODE
Rev. 0 | Page 14 of 36
Description
Clock Duty Cycle Stabilizer (DCS) Control Pin. CMOS compatible. DCS = low (AGND) to
enable DCS (recommended); DCS = high (AVDD1) to disable DCS.
Do Not Connect. These pins should float.
CMOS-Compatible Output Logic Mode Control Pin. OUTPUT MODE = 0 for CMOS mode;
OUTPUT MODE = 1 (AVDD1) for LVDS outputs.
Data Format Select Pin. CMOS control pin that determines the format of the output data.
DFS = high (AVDD1) for twos complement; DFS = low (ground) for offset binary format.
Set Pin for LVDS Output Current. Place 3.7 kΩ resistor terminated to DRGND.
3.3 V (±5%) Analog Supply.
2, 49 to 62, 65 to 66, 69,
3
DNC
OUTPUT MODE
4
DFS
5
6, 18 to 20, 32 to 34, 36,
38, 43 to 45, 92 to 97
7
LVDS_BIAS
AVDD1
SENSE
Reference Mode Selection. Connect to AGND for internal 1 V reference; connect to AVDD1
for external reference.
1.6 V Reference I/O. Function dependent on SENSE and external programming resistors.
Decouple to ground with 0.1 μF and 10 μF capacitors.
Analog Ground. The exposed heat sink on the bottom of the package must be connected to
AGND.
8
VREF
9, 21, 24, 39, 42, 46, 91, 98,
99, 100, Exposed Heat
Sink
10
AGND
REFT
Differential Reference Output. Decoupled to ground with 0.1 μF capacitor and to REFB (Pin 11)
with 0.1 μF and 10 μF capacitors.
Differential Reference Output. Decoupled to ground with a 0.1 μF capacitor and to REFT (Pin 10)
with 0.1 μF and 10 μF capacitors.
5.0 V Analog Supply (±5%).
Analog Input—True.
Analog Input—Complement.
Clock Input—True.
Clock Input—Complement.
Digital Output Ground.
3.3 V Digital Output Supply (3.0 V to 3.6 V).
Data Clock Output—Complement.
Data Clock Output—True.
D0 True Output Bit (CMOS levels).
D1 True Output Bit.
D2 True Output Bit.
D3 True Output Bit.
D4 True Output Bit.
D5 True Output Bit.
D6 True Output Bit.
D7 True Output Bit.
D8 True Output Bit.
D9 True Output Bit.
D10 True Output Bit.
D11 True Output Bit.
D12 True Output Bit.
D13 True Output Bit.
D14 True Output Bit.
D15 True Output Bit.
Out-of-Range True Output Bit.
11
REFB
12 to 17, 25 to 31, 35, 37
22
23
40
41
47, 63, 75, 87,
48, 64, 76, 88
67
68
70
71
72
73
74
77
78
79
80
81
82
83
84
85
86
89
90
AVDD2
VIN+
VIN
CLK+
CLK
DRGND
DRVDD
DCO
DCO+
D0+ (LSB)
D1+
D2+
D3+
D4+
D5+
D6+
D7+
D8+
D9+
D10+
D11+
D12+
D13+
D14+
D15+ (MSB)
OR+
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