LTC1060CSW Просмотр технического описания (PDF) - Linear Technology

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производитель

LTC1060CSW

Universal Dual Filter Building Block

Linear Technology 

LTC1060

ODES OF OPERATIO

R3

R2

R1 = R2

VIN

4–

(17)

+

3

AP2

(18)

5

S1A

(16)

+

–

Σ

∫

–

2

BP

(19)

1

LP

(20)

∫

SA/B

6 15

1/2 LTC1060

TLC1060 • MOO10

V+

( ) f0

= fCLK ;

100(50)

Q

=

R3;

R2

HOAP

=

–

R2;

R1

HOLP

=

–2

HOBP

=

–

2

R3

R2

Figure 13. Mode 4: 2nd Order Filter Providing Allpass,

Bandpass, Lowpass

R4

R3

R2

R1

VIN

4–

(17)

+

3

CZ

(18)

5

S1A

(16)

+

–

Σ

∫

–

2

BP

(19)

1

LP

(20)

∫

SA/B

6 15

1/2 LTC1060

TLC1060 • MOO12

V+

f0

=

fCLK

100(50)

1

+

R2

R4

;

fz

=

fCLK

100(50)

1 – R1 ; Q = R3

R4 R2

1 + R2

R4

Q2

=

R3

R1

( 1

–

R1

R4

;

HOZ

=

(f

0)

=

(R4/R1) –1

(R4/R2) + 1

;

HOZ

f

)fCLK = R2 ;

2 R1

( ) HOBP

=

R3

R2

1 + R2

R1

;

HOLP

=

1

1

+

+

(R2/R1)

(R2/R4)

Figure 15. Mode 5: 2nd Order Filter Providing Numerator

Complex Zeros, Bandpass, Lowpass

R4

R3

R2

R1

VIN

4–

(17)

+

SA/B

6 15

V–

3

HP

(18)

5

S1A

(16)

2

BP

(19)

1

LP

(20)

+–

Σ∫

∫

–

R5

1/2 LTC1060

R

2R

–

EXTERNAL

OP AMP

+

f0

= fCLK

100(50)

R2 ; Q = R3

R4 R2

R2

R4

;

H0AP

=

R5;

2R

H0HP

=

–

R2;

R1

H0BP

=

–

R3

R1

;

H0LP = –

R4

R1

TLC1060 • MOO11

Figure 14. Mode 4a: 2nd Order Filter Providing Highpass,

Bandpass, Lowpass, Allpass

R3

R2

R1

VIN

4–

(17)

+

3

N

(18)

5

S1A

(16)

2

BP

(19)

1

LP

(20)

+–

Σ∫

∫

–

SA/B

6 15

1/2 LTC1060

TLC1060 • MOO13

V–

fC

=

fCLK R2

100(50) R3

;

H0LP

=

–

R3/R1

;

H0HP

=

–

R2/R1

Figure 16. Mode 6a: 1st Order Filter Providing Highpass,

Lowpass

1060fb

14

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