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參數(shù)資料
| 型號： | LTC1066-1CSW#PBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 1/20頁 |
| 文件大小： | 0K |
| 描述： | IC FILTR 8TH ORDR LOWPASS 18SOIC |
| 標(biāo)準(zhǔn)包裝： | 40 |
| 濾波器類型： | 貝塞爾，低通開關(guān)電容器 |
| 頻率 - 截止或中心： | 50kHz |
| 濾波器數(shù)： | 1 |
| 濾波器階數(shù)： | 8th |
| 電源電壓： | 4.75 V ~ 16 V，±2.375 V ~ 8 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 18-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 18-SOIC |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 1324 (CN2011-ZH PDF) |
LTC1066-1
1
10661fa
■ DC Gain Linearity: 14 Bits
■ Maximum DC Offset:
±1.5mV
■ DC Offset TempCo: 7
V/°C
■ Device Fully Tested at fCUTOFF = 80kHz
■ Maximum Cutoff Frequency: 120kHz (VS = ±8V)
■ Drives 1k
Load with 0.02% THD or Better
■ Signal-to-Noise Ratio: 90dB
■ Input Impedance: 500M
■ Selectable Elliptic or Linear Phase Response
■ Operates from Single 5V up to
±8V Power Supplies
■ Available in an 18-Pin SO Wide Package
FREQUENCY (Hz)
100
10k
100k
1M
1066-1 TA02
1k
GAIN
(dB)
10
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
fC = 800Hz
fC = 80kHz
7.5V
1066-1 TA01
–7.5V
7.5V
VOUT;
VOS(OUT) =
2.5mVMAX
VIN
40kHz
≤ fCLK ≤ 4MHz
1
F
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
15pF
OUT A
–IN A
+IN A
V–
V+
CONNECT 1
FILTEROUT
50/100
CLK
V+
OUT B
+IN B
GND
FILTERIN
COMP 2
CONNECT 2
COMP 1
V–
LTC1066-1
20k
30k
SHORT CONNECTION UNDER
IC AND SHIELDED BY A
GROUND PLANE
BYPASS THE POWER SUPPLIES
WITH 0.1
F DISC CERAMIC
■ Instrumentation
■ Data Acquisition Systems
■ Anti-Aliasing Filters
■ Smoothing Filters
■ Audio Signal Processing
APPLICATIO S
U
FEATURES
DESCRIPTIO
U
14-Bit DC Accurate
Clock-Tunable, 8th Order Elliptic
or Linear Phase Lowpass Filter
Amplitude Response
Clock-Tunable, DC Accurate, 800Hz to 80kHz Elliptic Lowpass Filter
The LTC
1066-1 is an 8th order elliptic lowpass filter
which simultaneously provides clock-tunability and DC
accuracy. The unique and proprietary architecture of the
filter allows 14 bits of DC gain linearity and a maximum of
1.5mV DC offset. An external RC is required for DC
accurate operation. With
±7.5V supplies, a 20k resistor
and a 1
F capacitor, the cutoff frequency can be tuned
from 800Hz to 100kHz. A clock-tunable 10Hz to 100kHz
operation can also be achieved (see Typical Application
section).
The filter does not require any external active components
such as input/output buffers. The input/output impedance
is 500M
/0.1 and the output of the filter can source or
sink 40mA. When pin 8 is connected to V +, the clock-to-
cutoff frequency ratio is 50:1 and the input signal is
sampled twice per clock cycle to lower the risk of aliasing.
For frequencies up to 0.75fCUTOFF, the passband ripple is
±0.15dB. The gain at fCUTOFF is –1dB and the filter’s
stopband attenuation is 80dB at 2.3fCUTOFF. Linear phase
operation is also available with a clock-to-cutoff frequency
ratio of 100:1 when pin 8 is connected to ground.
The LTC1066-1 is available in an 18-pin SO Wide package.
TYPICAL APPLICATIO
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
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