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

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.

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

Typical Application

Applications

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

Packaging

**Order Information**
Part Number	Package	Temp	Price(1-99)	Price (1k)*
LTC1564CG#PBF	SSOP-16	C	$10.13	$8.95
LTC1564CG#TRPBF	SSOP-16	C		$9.01
LTC1564IG#PBF	SSOP-16	I	$11.67	$10.30
LTC1564IG#TRPBF	SSOP-16	I		$10.36

Demo Boards


Part Number	Description	Price
DC393A	LTC1564CG \| Digitally Programmable Amplifier and Filter	$150.00