LTC1564 10kHz to 150kHz Digitally Controlled Antialiasing Filter and 4-Bit P.G.A

The LTC®1564 is a new type of continuous time filter for antialiasing, reconstruction and other band-limiting applications. No other analog components or filter expertise are needed to use it. There is one analog input pin and one analog output pin. The cutoff frequency (fC) and gain are programmable while the shape of the lowpass response is fixed. A latching digital interface stores fC and gain settings or it can be bypassed for control directly from the pins. The LTC1564 operates from 2.7V to 10V total (single or split supplies) and comes in a 16-pin surface mount SSOP.

The LTC1564 is a rail-to-rail high resolution 8th-order lowpass filter with two stopband notches, giving approximately 100dB attenuation at 2.5 times the passband cutoff frequency fC (a de-facto standard for DSP front ends). Signals with low or variable levels can be normalized with the built-in variable gain that reduces input-referred noise with increasing gain for a typical dynamic range (maximum signal level to minimum noise) of 122dB (20 equivalent bits) with 20kHz fC and 118dB at 100kHz fC on a ±5V supply.

Other frequency-response shapes can be provided upon request. Please contact LTC Marketing

产品特点 Features

4-Bit Digitally Controlled 8th-Order Lowpass Filter –fCUTOFF Adjustable from 10kHz to 150kHz in 10kHz Steps
4-Bit Digitally Controlled Programmable Gain Amplifier – G = 1 to 16 in 1V/V Steps
Miniature 16-Pin SSOP Package
No External Components
122dB Total System Dynamic Range
Rail-to-Rail Input and Output Range
2.7V to 10V Operation
Low Noise Mute Mode
Low Power Shutdown Mode
Available in 16-Lead Plastic SSOP Package

参数

应用

Antialias or Reconstruction Filtering
DSP Systems
Communications Systems
Scientific Instruments
High Resolutions (16 Bits to 20 Bits)
Processing Signals Buried in Noise
Audio Signal Processing
Programmable Data Rates
Automatic Gain Control (AGC)
Single Part Replacing Multiple Filters

典型应用图

LTC1564 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) *
LTC1564CG	SSOP	16	C	$10.13	$8.95
LTC1564CG#PBF	SSOP	16	C	$10.13	$8.95
LTC1564CG#TR	SSOP	16	C		$9.01
LTC1564CG#TRPBF	SSOP	16	C		$9.01
LTC1564IG	SSOP	16	I	$11.67	$10.30
LTC1564IG#PBF	SSOP	16	I	$11.67	$10.30
LTC1564IG#TR	SSOP	16	I		$10.36
LTC1564IG#TRPBF	SSOP	16	I		$10.36

LTC1564 数据手册及相关资料下载

数据手册(英文) : LTC1564 - 10kHz to 150kHz Digitally Controlled Antialiasing Filter and 4-Bit P.G.A.PDF
设计要点 (英文) : DN276 - LTC1564: A Digitally Tuned Antialiasing / Reconstruction Filter Simplifies High Performance DSP Design.PDF
可靠性数据 : R420 Reliability Data .PDF
LT Journal : May 2001 Digitally Programmable Low Noise Filter/Gain Block Requires No External Parts.PDF