LTC1063CN8

更新时间： 2024-02-16 08:19:35

品牌	Logo	应用领域
凌特 - Linear		时钟
页数	文件大小	规格书
12页	319K
描述
DC Accurate, Clock-Tunable 5th Order Butterworth Lowpass Filter

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LTC1063CN8 数据手册

LTC1063

DC Accurate, Clock-Tunable

5th Order Butterworth

Lowpass Filter

DESCRIPTIO

EATURE

Clock-Tunable Cutoff Frequency

1mV DC Offset (Typical)

80dB CMRR (Typical)

Internal or External Clock

50µV_RMSClock Feedthrough

100:1 Clock-to-Cutoff Frequency Ratio

95µV_RMSTotal Wideband Noise

0.01% THD at 2V_RMSOutput Level

50kHz Maximum Cutoff Frequency

Cascadable for Faster Roll-Off

Operates from ±2.375 to ±8V Power Supplies

Self-Clocking with 1 RC

■

The LTC1063 is the first monolithic filter providing both

clock-tunability, low DC output offset and over 12-bit DC

accuracy. The frequency response of the LTC1063 closely

approximates a 5th order Butterworth polynomial. With

appropriate PCB layout techniques the output DC offset is

typically 1mV and is constant over a wide range of clock

frequencies. With ±5V supplies and ±4V input voltage

range, the CMR of the device is 80dB.

The filter cutoff frequency is controlled either by an inter-

nalorexternalclock. Theclock-to-cutofffrequencyratiois

100:1. The on-board clock is power supply independent,

and it is programmed via an external RC. The 50µV_RMS

clock feedthrough is considerably reduced over existing

monolithic filters.

O U

PPLICATI

■

Audio

The LTC1063 wideband noise is 95µV_RMS, and it can

process large AC input signals with low distortion. With

±7.5V supplies, for instance, the filter handles up to

4V_RMS(92dB S/N ratio) while the standard 1kHz THD is

below 0.02%; 80dB dynamic ranges (S/N +THD) is ob-

Strain Gauge Amplifiers

Anti-Aliasing Filters

Low Level Filtering

Digital Voltmeters

60Hz Lowpass Filters

Smoothing Filters

Reconstruction Filters

tained with input levels between 1V_RMSand 2.3V_RMS

TheLTC1063isavailablein8-pinminiDIPand16-pinSOL.

For a linear phase response, see LTC1065 data sheet.

TYPICAL APPLICATI

2.5kHz 5th Order Lowpass Filter

Frequency Response

–10

–20

–30

–40

–50

–60

–70

–80

–90

OUT

LTC1063

*19.1k

0.1µF

–5V

200pF*

0.1µF

SELF-CLOCKING SCHEME

** IF THE INPUT VOLTAGE CAN EXCEED V ,

CONNECT A SIGNAL DIODE BETWEEN PIN 1 AND V .

1063 TA01

100

FREQUENCY (kHz)

1063 TA02

12 3 4 5 6 7...12

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