參數(shù)資料
型號(hào): LT1113CS8#TRPBF
廠商: Linear Technology
文件頁數(shù): 5/16頁
文件大?。?/td> 0K
描述: IC PREC OP-AMP JFET DUAL 8SOIC
標(biāo)準(zhǔn)包裝: 2,500
放大器類型: J-FET
電路數(shù): 2
轉(zhuǎn)換速率: 3.9 V/µs
增益帶寬積: 5.6MHz
電流 - 輸入偏壓: 320pA
電壓 - 輸入偏移: 500µV
電流 - 電源: 5.3mA
電壓 - 電源,單路/雙路(±): ±4.5 V ~ 20 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 8-SO
包裝: 帶卷 (TR)
13
LT1113
1113fb
U
S
A
O
PPLICATI
TYPICAL
Accelerometer Amplifier with DC Servo
Paralleling Amplifiers to Reduce Voltage Noise
8
5V TO 15V
–5V TO –15V
4
1113 TA03
OUTPUT
R1
100M
C1
1250pF
R3
2k
C3
2
F
R2
18k
C2
2
F
6
5
R4
20M
+
1/2 LT1113
7
R5
20M
ACCELEROMETER
B & K MODEL 4381
OR EQUIVALENT
1
3
2
+
1/2 LT1113
R4C2 = R5C3 > R1 (1 + R2/R3) C1
OUTPUT = 0.8mV/pC* = 8.0mV/g**
DC OUTPUT
≤ 2.7mV
OUTPUT NOISE = 6nV/
√Hz AT 1kHz
*PICOCOULOMBS
**g = EARTH’S GRAVITATIONAL CONSTANT
1. ASSUME VOLTAGE NOISE OF LT1113 AND 51
SOURCE RESISTOR = 4.6nV/√Hz
2. GAIN WITH n LT1113s IN PARALLEL = n 200
3. OUTPUT NOISE =
√n 200 4.6nV/√Hz
4. INPUT REFERRED NOISE =
OUTPUT NOISE
=
4.6
nV/
√Hz
n 200
√n
5. NOISE CURRENT AT INPUT INCREASES
√n TIMES
6. IF n = 5, GAIN = 1000, BANDWIDTH = 1MHz, RMS NOISE, DC TO 1MHz =
9
V
= 4
V
√5
8
15V
–15V
4
8
15V
–15V
4
1113 TA04
1k
7
6
5
1k
1
2
3
+
A2
1/2 LT1113
+
1k
51
51
51
1
2
3
A1
1/2 LT1113
10k
7
5
6
+
1/2 LT1113
+
An
1/2 LT1113
1k
OUTPUT
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