LT1809CS8 datasheet(24/24 Pages) LINER

24 / 24 page

LT1809/LT1810

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408)432-1900 q FAX: (408) 434-0507 qwww.linear-tech.com

©LINEAR TECHNOLOGY CORPORATION 2000

sn180910 180910fs LT/TP 1100 4K • PRINTED IN USA

PART NUMBER

DESCRIPTION

COMMENTS

LT1395

400MHz Current Feedback Amplifier

800V/

µs Slew Rate, Shutdown

LT1632/LT1633

Dual/Quad 45MHz, 45V/

µs Rail-to-Rail Input and Output Op Amps

High DC Accuracy, 1.35mV VOS(MAX), 70mA Output Current,

Max Supply Current 5.2mA per Amplifier

LT1630/LT1631

Dual/Quad 30MHz, 10V/

µs Rail-to-Rail Input and Output Op Amps

High DC Accuracy, 525

µV VOS(MAX), 70mA Output Current,

Max Supply Current 4.4mA per Amplifier

LT1806/LT1807

Single/Dual 325MHz, 140V/

µs Rail-to-Rail

High DC Accuracy, 550

µV VOS(MAX), Low Noise 3.5nV/√Hz,

Input and Output Op Amps

Low Distortion –80dBc at 5MHz

Figure 10. Single 3V Supply, 4MHz, 4th Order Butterworth Filter

TYPICAL APPLICATIO

RELATED PARTS

Single 3V Supply, 4MHz, 4th Order Butterworth Filter

Benefiting from a low voltage supply operation, low

distortion and rail-to-rail output of LT1809, a low distor-

tion filter that is suitable for antialiasing can be built as

shown Figure 10. On a 3V supply, the filter has a pass-

band of 4MHz with 2.5VP-P signal and a stopband that is

greater than 70dB to frequency of 100MHz.

–

47pF

1/2 LT1810

220pF

665

Ω

VIN

VOUT

1809 F10

232

Ω

232

Ω

–

22pF

470pF

562

Ω

274

Ω

274

Ω

1/2 LT1810

FREQUENCY (Hz)

10k

100k

10M

100M

1809 F11

–10

–20

–30

–40

–50

–60

–70

–80

–90

VS = 3V, 0V

VIN = 2.5VP-P

Figure 11. Filter Frequency Response

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