LTC1562-2-非常低噪声、低失真有源RC四通道通用滤波

LTC1562描述
The LTC®1562-2 is a low noise, low distortion continuous time filter with rail-to-rail inputs and outputs, optimized for a center frequency (fO) of 20kHz to 300kHz. 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 LTC1562-2 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 90dB signal-to-noise ratio from a single 5V power supply. Low level signals can exploit the built-in gain capability of the LTC1562-2. Varying the gain of a section can achieve a dynamic range as high as 114dB with a ±5V supply. Other cutoff frequency ranges can be provided upon request. Please contact LTC Marketing.

LTC1562特点
Click Here for LT1562-2 Evaluation Kit
Continuous Time—No Clock
Four 2nd Order Filter Sections, 20kHz to 300kHz
Center Frequency
Butterworth, Chebyshev, Elliptic or Equiripple
Delay Response
Lowpass, Bandpass, Highpass Responses
99dB Typical S/N, ±5V Supply (Q = 1)
93dB Typical S/N, Single 5V Supply (Q = 1)
Rail-to-Rail Input and Output Voltages
DC Accurate to 3mV (Typ)
±0.5% Typical Center Frequency Accuracy
“Zero-Power” Shutdown Mode
Single or Dual Supply, 5V to 10V Total
Resistor-Programmable fO, Q, Gain

Typical Application

LTC1562封装
SSOP-20

LTC1562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

LTC1562仿真
FilterCAD 3.0 is a computer aided design program to help users without special expertise in filter design to create filters using Linear Technology's monolithic filter ICs. With FilterCAD, you can design filters with a variety of responses, including Butterworth, Bessel, Chebychev, elliptic, minimum Q elliptic, and custom responses.