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參數(shù)資料
| 型號： | LTC1066-1CSW#TRPBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 19/20頁 |
| 文件大小： | 0K |
| 描述： | IC FILTR 8TH ORDR LOWPASS 18SOIC |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 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： | 帶卷 (TR) |
LTC1066-1
8
10661fa
15pF capacitor should be connected between pins 11 and
13. Compensation is recommended for the following
cases shown in Table 6.
Table 6. Cases Where an RC Compensation (15pF in Series with
30k
pins 11, 13) is Recommended, fCLK/fCUTOFF = 50:1
VS = Single 5V (AGND = 2V)
TA = 25°CfCUTOFF ≥ 28kHz
TA = 70°CfCUTOFF ≥ 24kHz
VS = ±5V
TA = 25°CfCUTOFF ≥ 60kHz
TA = 70°CfCUTOFF ≥ 50kHz
VS = ±7.5V
TA = 25°CfCUTOFF ≥ 70kHz
TA = 70°CfCUTOFF ≥ 60kHz
Connect Pins (6, 12)
Pin 6 (CONNECT 1) and pin 12 (CONNECT 2) should be
shorted. In a printed circuit board the connection should
be done under the IC package through a short trace
surrounded by the analog ground plane. Pin 6 should be
0.2 inches away from any other circuit trace.
PIN FUNCTIONS
UU
U
(see Block Diagram). Input bias current flows out of pins
2 and 3. Pin 16 (+IN B) is the positive input of a high
performance op amp B which is internally connected as
a unity-gain follower. Op amp B buffers the switched-
capacitor network output. The input capacitance of both
op amps is 10pF.
Pin 14 (FILTERIN) is the input of a switched-capacitor
network. The input impedance of pin 14 is typically 11k.
Output Pins (1, 7, 17)
Pins 1 and 17 are the outputs of the internal high perfor-
mance op amps A and B. Pin 1 is usually connected to the
internal switched-capacitor filter network input pin 14.
Pin 17 is the buffered output of the filter and it can drive
loads as heavy as 200
(see THD + Noise curves under
Typical Performance Characteristics). Pin 7 is the internal
switched-capacitor network output and it can typically
sink or source 1mA.
Compensation Pins (11, 13)
Pins 11 and 13 are the AC compensation pins. If compen-
sation is needed, an external 30k resistor in series with a
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