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參數(shù)資料
| 型號(hào)： | 5962-9089501M2A |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 運(yùn)算放大器 |
| 英文描述： | OP-AMP, 10 uV OFFSET-MAX, 1.9 MHz BAND WIDTH, CQCC20 |
| 封裝： | CERAMIC, LCC-20 |
| 文件頁數(shù)： | 14/38頁 |
| 文件大?。?/td> | 900K |
| 代理商： | 5962-9089501M2A |
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TLC2652, TLC2652A, TLC2652Y
Advanced LinCMOS PRECISION CHOPPERSTABILIZED
OPERATIONAL AMPLIFIERS
SLOS019E SEPTEMBER 1988 REVISED FEBRUARY 2005
21
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 31
50
25
50
°
48
°
46
°
44
°
42
°
40
°
TA Free-Air Temperature °C
75
0
50
PHASE MARGIN
vs
FREE-AIR TEMPERATURE
100
125
25
75
VDD ± = ±5 V
RL = 10 k
CL = 100 pF
om
Phase
Margin
φ
m
Figure 32
0
200
400
600
PHASE MARGIN
vs
LOAD CAPACITANCE
800
1000
VDD ± = ±5 V
RL = 10 k
TA = 25°C
CL Load Capacitance pF
om
Phase
Margin
φ
m
60
°
50
°
40
°
30
°
20
°
10
°
0
°
Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.
APPLICATION INFORMATION
capacitor selection and placement
The two important factors to consider when selecting external capacitors CXA and CXB are leakage and
dielectric absorption. Both factors can cause system degradation, negating the performance advantages
realized by using the TLC2652.
Degradation from capacitor leakage becomes more apparent with the increasing temperatures. Low-leakage
capacitors and standoffs are recommended for operation at TA = 125°C. In addition, guard bands are
recommended around the capacitor connections on both sides of the printed circuit board to alleviate problems
caused by surface leakage on circuit boards.
Capacitors with high dielectric absorption tend to take several seconds to settle upon application of power, which
directly affects input offset voltage. In applications where fast settling of input offset voltage is needed, it is
recommended that high-quality film capacitors, such as mylar, polystyrene, or polypropylene, be used. In other
applications, however, a ceramic or other low-grade capacitor can suffice.
Unlike many choppers available today, the TLC2652 is designed to function with values of CXA and CXB in the
range of 0.1
F to 1 F without degradation to input offset voltage or input noise voltage. These capacitors
should be located as close as possible to the CXA and CXB pins and returned to either VDD or C RETURN. On
many choppers, connecting these capacitors to VDD causes degradation in noise performance. This problem
is eliminated on the TLC2652.
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| 5962-9089504QPA | 制造商:Texas Instruments 功能描述:SP Amp Chopper Stabilization Single |
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