LTC1560-1 1MHz/500kHz Continuous Time Low Noise, Lowpass Elliptic Filter

The LTC™1560-1 is a 5th order, continuous-time, lowpass filter. The elliptic transfer function of the LTC1560-1 was carefully chosen to reach a compromise between selectivity, for antialiasing applications, and transient response. The filter cutoff frequency, fCUTOFF, is pin selectable to either 500kHz (Pin 5 to V+) or 1MHz (Pin 5 to V�). When programmed for 1MHz, the passband ripple is typically �0.2dB up to 0.55fCUTOFF and �0.3dB to 0.9fCUTOFF. The transition band gain is �24dB at 1.4fCUTOFF and �51dB at 2fCUTOFF. Stopband attenuation is 63dB at 2.43fCUTOFF and above, remaining at least 60dB to 10MHz with proper board layout. When the LTC1560-1 is programmed for fCUTOFF = 500kHz, the filter response closely follows the 1MHz case with the exception of passband flatness near the cutoff frequency; the gain at fCUTOFF is �1.3dB.

The LTC1560-1, unlike other high frequency filters, is designed for low noise and low distortion. With a 1VRMS input signal, the signal-to-noise ratio is 69dB and the THD is �63dB. The maximum SNR of 75dB is obtained with a 2.1VRMS input signal. This results in �46dB THD.

The LTC1560-1 operates with ±5V supplies, has a power saving mode and is available in an SO-8 surface mount package.

Other cutoff frequencies from 450kHz to 1.5MHz can be obtained. Demo board DC135A is available for the LTC1560-1. For more information please contact LTC Marketing

产品特点 Features

5th Order, 1MHz Elliptic Filter in SO-8 Package
Pin Selectable 1MHz/500kHz Cutoff Frequency
Signal-to-Noise Ratio (SNR): 75dB
Signal-to-Noise Ratio with �63dB THD: 69dB
Passband Ripple (fCUTOFF = 1MHz): �0.3dB
Stopband Attenuation Better Than 60dB
No External Components Required

参数

应用

Antialiasing Filters
Smoothing or Reconstruction Filters
Communication Filters

典型应用图

LTC1560-1 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) *
LTC1560-1CS8	SO	8	C	$5.45	$4.65
LTC1560-1CS8#PBF	SO	8	C	$5.45	$4.65
LTC1560-1CS8#TR	SO	8	C		$4.71
LTC1560-1CS8#TRPBF	SO	8	C		$4.71
LTC1560-1IS8	SO	8	I	$6.20	$5.25
LTC1560-1IS8#PBF	SO	8	I	$6.20	$5.25
LTC1560-1IS8#TR	SO	8	I		$5.31
LTC1560-1IS8#TRPBF	SO	8	I		$5.31

LTC1560-1 数据手册及相关资料下载

数据手册(英文) : LTC1560-1 - 1MHz/500kHz Continuous Time Low Noise, Lowpass Elliptic Filter.PDF
应用指南 (英文) : AN87 - linear Technology Magazine Circuit Collection, Volume V: Data Conversion, Interface and Signal Conditioning Products.PDF
设计要点 (英文) : DN169 - LTC1560-1: Tiny 1MHz Lowpass Filter Uses No Inductors.PDF
可靠性数据 : R401 Reliability Data.PDF