LTC1562 Very Low Noise, Low Distortion Active RC Quad Universal Filter

The LTC®1562 is a low noise, low distortion continuous-time filter with rail-to-rail inputs and outputs, optimized for a center frequency (fO) of 10kHz to 150kHz. Unlike most monolithic filters, no clock is needed. Four independent 2nd order filter blocks can be cascaded in any combination, such as one 8th order or two 4th order filters. Each block’s response is programmed with three external resistors for center frequency, Q and gain, using simple design formulas. Each 2nd order block provides lowpass and bandpass outputs. Highpass response is available if an external capacitor replaces one of the resistors. Allpass, notch and elliptic responses can also be realized.

The LTC1562 is designed for applications where dynamic range is important. For example, by cascading 2nd order sections in pairs, the user can configure the IC as a dual 4th order Butterworth lowpass filter with 94dB signal-to-noise ratio from a single 5V power supply. Low level signals can exploit the built-in gain capability of the LTC1562. Varying the gain of a section can achieve a dynamic range as high as 118dB with a ±5V supply.

Other cutoff frequency ranges can be provided upon request. Please contact LTC Marketing

产品特点 Features

Continuous Time—No Clock
Four 2nd Order Filter Sections, 10kHz to 150kHz Center Frequency
±0.5% Typical Center Frequency Accuracy
±0.3% Typical Center Frequency Accuracy (A Grade)
Wide Variety of Response Shapes
Lowpass, Bandpass and Highpass Responses
103dB Typical S/N, ±5V Supply (Q = 1)
97dB Typical S/N, Single 5V Supply (Q = 1)
96dB Typical S/(N + THD) at ±5V Supply, 20kHz Input
Rail-to-Rail Input and Output Voltages
DC Accurate to 3mV (Typ)
“Zero-Power” Shutdown Mode
Single or Dual Supply, 5V to 10V Total
Resistor-Programmable fO, Q, Gain

参数

应用

High Resolution Systems (14 Bits to 18 Bits)
Antialiasing/Reconstruction Filters
Data Communications, Equalizers
Dual or I-and-Q Channels (Two Matched 4th Order Filters in One Package)
linear Phase Filtering
Replacing LC Filter Modules

典型应用图

LTC1562 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) *
LTC1562ACG	SSOP	20	C	$13.90	$11.75
LTC1562ACG#PBF	SSOP	20	C	$13.90	$11.75
LTC1562ACG#TR	SSOP	20	C		$11.85
LTC1562ACG#TRPBF	SSOP	20	C		$11.85
LTC1562AIG	SSOP	20	I	$15.30	$12.95
LTC1562AIG#PBF	SSOP	20	I	$15.30	$12.95
LTC1562AIG#TR	SSOP	20	I		$13.05
LTC1562AIG#TRPBF	SSOP	20	I		$13.05
LTC1562CG	SSOP	20	C	$10.20	$8.95
LTC1562CG#PBF	SSOP	20	C	$10.20	$8.95
LTC1562CG#TR	SSOP	20	C		$9.05
LTC1562CG#TRPBF	SSOP	20	C		$9.05
LTC1562CG-2	SSOP	20	C	$10.20	$8.95
LTC1562CG-2#PBF	SSOP	20	C	$10.20	$8.95
LTC1562CG-2#TR	SSOP	20	C		$9.05
LTC1562CG-2#TRPBF	SSOP	20	C		$9.05
LTC1562CN	PDIP	16	C	$10.35	$8.95
LTC1562CN#PBF	PDIP	16	C	$10.35	$8.95
LTC1562IG	SSOP	20	I	$11.75	$10.30
LTC1562IG#PBF	SSOP	20	I	$11.75	$10.30
LTC1562IG#TR	SSOP	20	I		$10.40
LTC1562IG#TRPBF	SSOP	20	I		$10.40
LTC1562IG-2	SSOP	20	I	$11.75	$10.30
LTC1562IG-2#PBF	SSOP	20	I	$11.75	$10.30
LTC1562IG-2#TR	SSOP	20	I		$10.40
LTC1562IG-2#TRPBF	SSOP	20	I		$10.40

LTC1562 数据手册及相关资料下载

数据手册(英文) : LTC1562 - Very Low Noise, Low Distortion Active RC Quad Universal Filter.PDF
应用指南 (英文) : AN83 - Performance Verification of Low Noise, Low Dropout Regulators.PDF
设计要点 (英文) : DN195 - Get 100dB Stopband Attenuation with the LTC1562 Universal Filter Family.PDF
可靠性数据 : R401 Reliability Data.PDF