參數(shù)資料
型號(hào): DAC650
廠商: Texas Instruments, Inc.
英文描述: 12-Bit 500MHz Dightal-To-Analog Converter(12位 500M赫茲單片D/A轉(zhuǎn)換器)
中文描述: 12位500MHz的Dightal到模擬轉(zhuǎn)換器(12位500米赫茲單片的D / A轉(zhuǎn)換器)
文件頁數(shù): 8/11頁
文件大?。?/td> 142K
代理商: DAC650
DAC650
8
FIGURE 1. Functional Block Diagram of the DAC650.
5V Ref
Current
Sources
Current
Switches
100
100
100
100
+2V
(Ladder
Equivalent
Resistance)
V
OUT
V
OUT
S
L
L
R
ECL Logic
Threshold
Tracking
ECL Logic
Threshold
MSB
2
3
4
5
6
7
8
9
10
11
LSB
V
(–1.3V)
V
(Mid-point
Out)
2k
8k
4.95k
3k
3k
3k
V
BB
+1V
+1V
Clock Buffer
ECL High In
ECL Low In
CLK
CLK
Ref
ADJUST
Ref
OUT
Ref
IN
Offset Adjust
FIGURE 2. Using a Potentiometer for
±
1% Gain Adjust.
DAC650
100
Ref
IN
61
Ref
OUT
60
FIGURE 3. Series Bit Termination.
–5.2V
ECL Drive Gates
Recommended
Pull Down Resistor
DAC650
Bit
Input
47
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