參數(shù)資料
型號(hào): LT1128MJ8
廠商: LINEAR TECHNOLOGY CORP
元件分類: 運(yùn)動(dòng)控制電子
英文描述: Ultra Low Noise Precision High Speed Op Amps
中文描述: OP-AMP, 180 uV OFFSET-MAX, 20 MHz BAND WIDTH, CDIP8
封裝: 0.300 INCH, HERMETIC SEALED, CERDIP-8
文件頁數(shù): 14/20頁
文件大小: 439K
代理商: LT1128MJ8
14
LT1028/LT1128
U
S
A
O
PPLICATI
U
U
If C
F
is only used to cut noise bandwidth, a similar effect
can be achieved using the over-compensation terminal.
The Gain, Phase plot also shows that phase margin is
about 45
°
at gain of 10 (20dB). The following configura-
tion has a high (
70%) overshoot without the 10pF
capacitor because of additional phase shift caused by the
feedback resistor – input capacitance pole. The presence
of the 10pF capacitor cancels this pole and reduces
overshoot to 5%.
Over-Compensation
The LT1028/LT1128 are equipped with a frequency over-
compensation terminal (pin 5). A capacitor connected
between pin 5 and the output will reduce noise bandwidth.
Details are shown on the Slew Rate, Gain-Bandwidth
Product vs Over-Compensation Capacitor plot. An addi-
tional benefit is increased capacitive load handling capa-
bility.
1028/1128 AI11
10pF
10k
50
1.1k
+
LT1028
U
A
O
PPLICATI
TYPICAL
Strain Gauge Signal Conditioner with Bridge Excitation
Low Noise Voltage Regulator
1028/1128 TA05
1
μ
F
REFERENCE
OUTPUT
+
LT1128
30.1k*
49.9
*
15V
330
10k
ZERO
TRIM
5.0V
301k*
LT1021-5
0V TO 10V
OUTPUT
3
2
7
6
4
350
BRIDGE
–15V
15V
15V
LT1028
+
3
2
7
6
4
–15V
LT1028
+
3
2
7
6
4
–15V
5k
GAIN
TRIM
330
*RN60C FILM RESISTORS
THE LT1028’s NOISE CONTRIBUTION IS NEGLIGIBLE
COMPARED TO THE BRIDGE NOISE.
1028/1128 TA04
10
2k
20V OUTPUT
+
LT1028
2.3k
PROVIDES PRE-REG
AND CURRENT
LIMITING
10
+
28V
121
2k
330
1000pF
1k
28V
LT317A
LT1021-10
2N6387
相關(guān)PDF資料
PDF描述
LT1028AC Ultra Low Noise Precision High Speed Op Amps
LT1028ACH Ultra Low Noise Precision High Speed Op Amps
LT1028ACN8 Ultra Low Noise Precision High Speed Op Amps
LT1028AM Ultra Low Noise Precision High Speed Op Amps
LT1028AMH Ultra Low Noise Precision High Speed Op Amps
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