AD828

REV. B

–12–

OUTLINE DIMENSIONS

Dimensions shown in inches and (mm).

8-Lead Plastic Mini-DIP (N) Package

0.011

0.003

(0.28

0.08)

0.30 (7.62)

REF

15

°

0

°

PIN 1

4

5

8

1

0.25

(6.35)

0.31

(7.87)

0.10

(2.54)

BSC

SEATING

PLANE

0.035

0.01

(0.89

0.25)

0.18

0.03

(4.57

0.76)

0.033

(0.84)

NOM

0.018

0.003

(0.46

0.08)

0.125

(3.18)

MIN

0.165

0.01

(4.19

0.25)

0.39 (9.91) MAX

8-Lead SO (R) Package

85

4

1

0.1968 (5.00)

0.1890 (4.80)

0.2440 (6.20)

0.2284 (5.80)

PIN 1

0.1574 (4.00)

0.1497 (3.80)

0.0500 (1.27)

BSC

0.0688 (1.75)

0.0532 (1.35)

SEATING

PLANE

0.0098 (0.25)

0.0040 (0.10)

0.0192 (0.49)

0.0138 (0.35)

0.0098 (0.25)

0.0075 (0.19)

0.0500 (1.27)

0.0160 (0.41)

8

0

0.0196 (0.50)

0.0099 (0.25)

45

LOW DISTORTION LINE DRIVER

The AD828 can quickly be turned into a powerful, low distor-

tion line driver (see Figure 46). In this arrangement the AD828

can comfortably drive a 75

Ω back-terminated cable, with a

5 MHz, 2 V p-p input; all of this while achieving the harmonic

distortion performance outlined in the following table.

Configuration

2nd Harmonic

1. No Load

–78.5 dBm

2. 150

–63.8 dBm

3. 150

–70.4 dBm

In this application one half of the AD828 operates at a gain of

2.1 and supplies the current to the load, while the other pro-

vides the overall system gain of 2. This is important for two

reasons: the first is to keep the bandwidth of both amplifiers the

same, and the second is to preserve the AD828’s ability to oper-

be chosen to satisfy the following equation:

1.1k

7.5

75

75

75

0.1 F

1/2

AD828

3

2

1

8

1 F

1k

1k

1/2

AD828

6

5

7

1k

0.1 F

1 F

4

Figure 46. Low Distortion Amplifier