19

LTC1060

1060fb

Output Offsets

The DC offset at the filter bandpass output is always equal

(Notch and LP) depend on the mode of operation and

external resistor ratios. Table 5 illustrates this.

It is important to know the value of the DC output offsets,

especially when the filter handles input signals with large

dynamic range. As a rule of thumb, the output DC offsets

increase when:

1. The Q’s decrease.

done by decreasing either the (R2/R4) or the

R6/(R5 + R6) resistor ratios.

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-

tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.

N Package

20-Lead PDIP (Narrow .300 Inch)

(Reference LTC DWG # 05-08-1510)

LTC1060 OFFSETS

PACKAGE DESCRIPTIO

.255 ± .015*

(6.477 ± 0.381)

1.040*

(26.416)

MAX

12

3

4

5

6

7

8

910

19

11

12

13

14

16

15

17

18

20

NOTE:

1. DIMENSIONS ARE

INCHES

MILLIMETERS

*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.

MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm)

N20 1002

.020

(0.508)

MIN

.120

(3.048)

MIN

.125 – .145

(3.175 – 3.683)

.065

(1.651)

TYP

.045 – .065

(1.143 – 1.651)

.018 ± .003

(0.457 ± 0.076)

.005

(0.127)

MIN

.100

(2.54)

BSC

.008 – .015

(0.203 – 0.381)

.300 – .325

(7.620 – 8.255)

.325

+.035

–.015

+0.889

–0.381

8.255

()

Table 5

MODE

PIN 3 (18)

PIN 2 (19)

PIN 1 (20)

1,4

1a

1b

1c

(R5 + R6)

(R5 + 2R6)

2, 5

2a

(R5 + R6)

(R5 + 2R6)

2b

3, 4a

R4

R1

+

R4

R2

+

R4

R3

R4

R2

R4

R3

R4(1 + k)

R2 + R4(1 + k)

;k =

•

R2

R2 + R4(1 + k)

R6

R5 + R6

R4k

R2 + R4k

;k =

•

R2

R2 + R4k

R6

R5 + R6