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参数资料
| 型号： | LTC1264-7CN |
| 厂商： | Linear Technology |
| 文件页数： | 3/16页 |
| 文件大小： | 0K |
| 描述： | IC FILTER 8TH ORDR LOWPASS 14DIP |
| 标准包装： | 25 |
| 滤波器类型： | 线性相位，低通开关电容器 |
| 频率 - 截止或中心： | 200kHz |
| 滤波器数： | 1 |
| 滤波器阶数： | 8th |
| 电源电压： | ±2.37 V ~ 8 V |
| 安装类型： | 通孔 |
| 封装/外壳： | 14-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 14-PDIP |
| 包装： | 管件 |
LTC1264-7
12647fa
11
External Connection Pins (7, 14)
Pins 7 and 14 should be connected together. In a printed
circuit board the connection should be done under the IC
package through a short trace surrounded by the analog
ground plane.
Ratio Input Pin (10)
The DC level at this pin determines the ratio of the clock
frequency to the cutoff frequency of the filter. Pin 10 at V
+
gives a 25:1 ratio and pin 10 at V
– gives a 50:1 ratio. For
single supply operation the ratio is 25:1 when pin 10 is at
V
+ and 50:1 when pin 10 is at ground. When pin 10 is not
tied to ground, it should be bypassed to analog ground
with a 0.1
F capacitor. If the DC level at pin 10 is switched
mechanically or electrically at slew rates greater than
1V/
s while the device is operating, a 10k resistor should
be connected between pin 10 and the DC source.
UU
U
PI FU CTIO S
Clock Input Pin (11)
Any TTL or CMOS clock source with a square-wave output
and 50% duty cycle (
±10%) is an adequate clock source
for the device. The power supply for the clock source
should not be the filter’s power supply. The analog ground
for the filter should be connected to clock’s ground at a
single point only. Table 7 shows the clock’s low and high
level threshold values for a dual or single supply operation.
A pulse generator can be used as a clock source provided
the high level ON time is greater than 0.1
s. Sine waves are
not recommended for clock input frequencies less than
100kHz, since excessively slow clock rise or fall times
generate internal clock jitter (maximum clock rise or fall
time
≤1s). The clock signal should be routed from the
right side of the IC package and perpendicular to it to avoid
coupling to any input or output analog signal path. A 200
resistor between clock source and pin 11 will slow down
the rise and fall times of the clock to further reduce charge
coupling (Figures 2 and 3).
Table 7. Clock Source High and Low Threshold Levels
POWER SUPPLY
HIGH LEVEL
LOW LEVEL
Dual Supply =
±7.5V
≥ 2.18V
≤ 0.5V
Dual Supply =
±5V
≥ 1.45V
≤ 0.5V
Dual Supply =
±2.5V
≥ 0.73V
≤ – 2.0V
Single Supply = 12V
≥ 7.80V
≤ 6.5V
Single Supply = 5V
≥ 1.45V
≤ 0.5V
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| LTC1264-7CN#PBF | 功能描述:IC FILTER 8TH ORDR LOWPASS 14DIP RoHS:是 类别:集成电路 (IC) >> 接口 - 滤波器 - 有源 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1,000 系列:- 滤波器类型:连续时间，带通低通 频率 - 截止或中心:150kHz 滤波器数:4 滤波器阶数:8th 电源电压:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) |
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| LTC1264-7CSW#TR | 功能描述:IC FILTER LP 8ORD 250KHZ 16SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 滤波器 - 有源 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1,000 系列:- 滤波器类型:连续时间，带通低通 频率 - 截止或中心:150kHz 滤波器数:4 滤波器阶数:8th 电源电压:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) |
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