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ADP7112 датащи(PDF) 27 Page - Analog Devices

номер детали ADP7112
подробное описание детали  20V, 200mA, Ultra-Low Noise, Ultra-High PSRR, Linear Regulator
PDF  47 Pages
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

ADP7112 датащи(HTML) 27 Page - Analog Devices

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Data Sheet
LT3046
analog.com
Rev 0
27 of 47
Figure 70. Ceramic Capacitor DC Bias Characteristics
Figure 71. Ceramic Capacitor Temperature Characteristics
X5R and X7R dielectrics result in more stable characteristics and are thus more suitable for the LT3046. The X7R
dielectric has better stability across temperature, while the X5R is less expensive and is available in higher values.
Nonetheless, care must still be exercised when using X5R and X7R capacitors. The X5R and X7R codes only specify
operating temperature range and the maximum capacitance change over temperature. While capacitance changes
due to DC bias for X5R and X7R is better than Y5V and Z5U dielectrics, it can still be significant enough to drop
capacitance to below sufficient levels. As shown in Figure 72, capacitor DC bias characteristics tend to improve as
component case size increases. However, verification of expected capacitance at the operating voltage is highly
recommended. Due to its good voltage coefficient in small case sizes, Analog Devices recommends using the
Murata GCM series ceramic capacitors.
BOTH CAPACITORS ARE 16V
1210 CASE SIZE, 10µF
X5R
Y5V
DC BIAS VOLTAGE(V)
0
2
4
6
8
10
12
14
16
–100
–80
–60
–40
–20
0
BOTH CAPACITORS ARE 25V
1210 CASE SIZE, 10µF
X5R
Y5V
TEMPERATURE (°C)
–55
–35
–15
5
25
45
65
85
–100
–80
–60
–40
–20
0
20



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