LTC1062 5th Order Lowpass Filter

The LTC™1062 is a 5th order all pole maximally flat lowpass filter with no DC error. Its unusual architecture puts the filter outside the DC path so DC offset and low frequency noise problems are eliminated. This makes the LTC1062 very useful for lowpass filters where DC accuracy is important.

The filter input and output are simultaneously taken across an external resistor. The LTC1062 is coupled to the signal through an external capacitor. This RC reacts with the internal switched capacitor network to form a 5th order rolloff at the output.

The filter cutoff frequency is set by an internal clock that can be externally driven. The clock-to-cutoff frequency ratio is typically 100:1, allowing the clock ripple to be easily removed.

Two LTC1062 scan be cascaded to form a 10th order quasi max flat lowpass filter. The device can be operated with single or dual supplies ranging from ±2.5V to �9V.

The LTC1062 is manufactured using linear Technology’s enhanced LTCMOS® silicon gate process

产品特点 Features

Lowpass Filter with No DC Error
Low Passband Noise
Operates DC to 20kHz
Operates on a Single 5V Supply or Up to ±8V
5th Order Filter
Maximally Flat Response
Internal or External Clock
Cascadable for Faster Rolloff
Buffer Available

参数

应用

60Hz Lowpass Filters
Anti-Aliasing Filter
Low Level Filtering
Rolling Off AC Signals from High DC Voltages
Digital Voltmeters
Scales
Strain Gauges

典型应用图

LTC1062 订购信息和价格参考Package Variations and Pricing

器件型号	封装	引脚	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量) *
LTC1062CN8	PDIP	8	C	$4.10	$3.20
LTC1062CN8#PBF	PDIP	8	C	$4.10	$3.20
LTC1062CSW	SO	16	C	$4.20	$3.40
LTC1062CSW#PBF	SO	16	C	$4.20	$3.40
LTC1062CSW#TR	SO	16	C		$3.46
LTC1062CSW#TRPBF	SO	16	C		$3.46

LTC1062 数据手册及相关资料下载

数据手册(英文) : LTC1062 - 5th Order Lowpass Filter.PDF
应用指南 (英文) : AN24 - Unique Applications for the LTC1062 Lowpass Filter.PDF
应用指南 (英文) : AN40 - Take the Mystery Out of the Switched Capacitor Filter.PDF
可靠性数据 : R042 Reliability Data.PDF