LTC1564 datasheet(1/12 Pages) LINER

tên linh kiện	LTC1564

Giải thích chi tiết về linh kiện	10kHz to 150kHz Digitally Controlled Antialiasing Filter and 4-Bit P.G.A

PDF	12 Pages

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nhà sản xuất	LINER [Linear Technology]

Trang chủ	http://www.linear.com

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LTC1564

1564fa

10kHz to 150kHz

Digitally Controlled

Antialiasing Filter and 4-Bit P.G.A.

■ 4-Bit Digitally Controlled 8th-Order Lowpass Filter

–fCUTOFF Adjustable from 10kHz to 150kHz in 10kHz

Steps

– 100dB Attenuation at 2.5

× fCUTOFF

■ 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

■ 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

Low Noise Programmable Filter with Variable Gain

The LTC

®1564 is a new type of continuous time filter for

antialiasing, reconstruction and other band-limiting appli-

cations. 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 approxi-

mately 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 (maxi-

mum signal level to minimum noise) of 122dB (20 equiva-

lent 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.

IN AGND V+ RST G3

LTC1564

G2

G1

G0

OUT V–

123

4

5

6

7

1564 TA01

8

16

15

14

13

12

11

GAIN CODE

FREQUENCY CODE

V+ AND V– SUPPLIES CAN BE FROM

1.35V TO 5.25V EACH

TIE F AND G PINS TO V+ OR V– TO

SET FREQUENCY AND GAIN

DYNAMIC RANGE 118dB TO 122dB

AT

±5V DEPENDING ON FREQUENCY CODE

0.1

µF

V+

10

9

EN

CS/

HOLD F3

F2

F1

F0

0.1

µF

ANALOG

OUT

ANALOG

IN

V–

LTC1564 Programmable Range

FREQUENCY (kHz)

5

10

100

500

1564 TA02

10

30

20

0

–10

–20

–30

–40

–50

–60

–70

–80

–120

–110

–100

–90

fC = 10kHz

GAIN = 1V/V

fC = 150kHz

GAIN = 16V/V

FEATURES

DESCRIPTIO

APPLICATIO S

TYPICAL APPLICATIO

, LTC and LT are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

Số phần tương tự - LTC1564

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Linear Technology	LTC1564	227Kb / 12P	10kHz to 150kHz Digitally Controlled Antialiasing Filter and 4-Bit P.G.A
Analog Devices	LTC1564	346Kb / 28P	Very Low Noise, Low Distortion Active RC Quad Universal Filter REV A
	LTC1564	183Kb / 12P	10kHz to 150kHz Digitally Controlled Antialiasing Filter and 4-Bit P.G.A. REV A
	LTC1564	234Kb / 16P	Very Low Noise, Low Distortion Active RC Quad Universal Filter REV A
Linear Technology	LTC1564CG	227Kb / 12P	10kHz to 150kHz Digitally Controlled Antialiasing Filter and 4-Bit P.G.A

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