- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377675 > LT1061 (Linear Technology Corporation) High Performance Triple Universal Filter Building Block(高性能通用型三濾波器組件) PDF資料下載
參數(shù)資料
| 型號： | LT1061 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | High Performance Triple Universal Filter Building Block(高性能通用型三濾波器組件) |
| 中文描述： | 三高性能通用濾波器積木（高性能通用型三濾波器組件） |
| 文件頁數(shù)： | 8/16頁 |
| 文件大?。?/td> | 290K |
| 代理商： | LT1061 |
8
LTC1061
ODES OF OPERATIO
W
U
Figure 6. Measures Frequency Response of
the Lowpass Butterworth Filter of Figure 3.
2. Secondary Modes: Mode 1b –
It is derived from Mode
1. In Mode 1b, Figure 7, two additional resistors, R5 and
R6, are added to attenuate the amount of voltage fed back
from the lowpass output into the input of the S
A
(S
B
)
switched capacitor summer. This allows the filter clock-
to-center frequency ratio to be adjusted beyond 50:1 (or
100:1). Mode 1b still maintains the speed advantages of
Mode 1. Figure 8 shows the 3 lowpass sections of the
LTC1061 in cascade resulting in a Chebyshev lowpass
filter. The side A of the IC is connected in Mode 1b to
provide the first resonant frequency below the cutoff
frequency of the filter. The practical ripple, obtained by
using a non-A version of the LTC1061 and 1% standard
resistor values, was 0.15dB. For this 6th order lowpass,
the textbook Qs and center frequencies normalized to the
ripple bandwidth are: Q1 = 0.55, f
O1
= 0.71, Q2 = 1.03, F
O2
= 0.969, Q3 = 3.4, F
O3
= 1.17. The design was done with
speed in mind. The higher (Q3, F
O3
) section was in Mode
1 and placed in the side B of the LTC1061. The remaining
two center frequencies were then normalized with respect
to the center frequency of side B; this changes the ratio of
clock-to-cutoff frequency from 50:1 to 50
×
1.17 = 58.5:1.
As shown in Figure 9, the maximum cutoff frequency is
about 33kHz. The total wideband output noise is 220
μ
V
RMS
and the measured output DC offset voltage is 60mV.
–
+
Σ
∫
∫
AGND
R1
N
BP
LP
V
IN
1061 F07
+
–
S
R2
R3
R6
R5
f
O
=1f
n
= f
O
; Q = R2
√
→
H
ON1
(f
→
0) = H
ON2
f
H
OLP
= R6–R2/R1
OBP
= – R1
CLK
R2
R1
R6
R5 + R6
√
R6
R5 + R6
f
CLK
2
(
)
f
IN
(Hz)
10k
–70
V
O
/
I
–60
–50
–40
–30
100k
1M
1061 F09
–20
–10
0
30k
V
S
>
±5V
T
A
= 25°C
V
IN
= 1V
RMS
f
CLK
= 1.9MHz
Figure 8. 6th Order Chebyshev, Lowpass Filter Using 3
Different Modes of Operation for Speed Optimization
Figure 9. Amplitude Response of the 6th Order
Chebyshev Lowpass Filter of Figure 8
Figure 7. Mode 1b: 2nd Order Filter Providing
Notch, Bandpass, Lowpass
f
IN
(Hz)
10k
–70
G
–60
–50
–40
–30
100k
1M
1061 F06
–20
–10
0
20k
40k
200k
V
S
≥
±5V
T
A
= 25°C
V
IN
= 1V
RMS
f
CLK
= 2MHz
f
C
= 40kHz
f
CLK
= 1MHz
f
C
= 20kHz
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
R32
V
OUT
R11
V
IN
LTC1061 F08
LTC1061
R22
R12
R33
R23
R43
R31
R21
f
CLK
< 2MHz
V
–
R13
V
+
R51
R61
STANDARD 1% RESISTOR VALUES
R11 = 35.7k
R31 = 11.5k
R51 = 5.49k
R12 = 11k
R21 = 12.1k
R61 = 2.87k
R22 = 11k
R23 = 10.5
R43 = 15.8k
R32 = 36.5k
R13 = 15.8k
R33 = 13k
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LT1062 | 5th Order Lowpass filter(5階低通濾波器) |
| LT1070CT | Dual 1-of-4 Data Selectors/Multiplexers 16-PDIP 0 to 70 |
| LT1071HVIT | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| LT1070 | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| LT1070CK | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1070CT | 功能描述:IC REG MULTI CONFIG ADJ TO220-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 設(shè)計資源:Design Support Tool 標準包裝:1 系列:- 類型:升壓（升壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開關(guān):- 電流 - 輸出:100mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-5 細型，TSOT-23-5 包裝:剪切帶 (CT) 供應(yīng)商設(shè)備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT |
| LT1070CT#06 | 制造商:Linear Technology 功能描述:5A and 2.5A High Efficiency Switching Regulator |
| LT1070CT#06PBF | 制造商:Linear Technology 功能描述:Conv DC-DC Single Non-Inv/Inv/Step Up/Step Down 3V to 60V 5-Pin(5+Tab) TO-220 制造商:Linear Technology 功能描述:IC REG MULTI CONFIG ADJ TO-220-5 |
| LT1070CT#30PBF | 制造商:Linear Technology 功能描述:IC REG MULTI CONFIG ADJ TO220-5 |
| LT1070CT#PBF | 功能描述:IC REG MULTI CONFIG ADJ TO220-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標準包裝:250 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V 輸入電壓:2.05 V ~ 6 V PWM 型:電壓模式 頻率 - 開關(guān):2MHz 電流 - 輸出:500mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:6-UFDFN 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:6-SON（1.45x1） 產(chǎn)品目錄頁面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。