–12–

AD828

REV. C

Revision History

Location

Page

6/02–Data Sheet changed from REV. B to REV. C.

Renumbered Figures and TPCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Global

Changes to Figure 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

LOW DISTORTION LINE DRIVER

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

tion line driver (see Figure 10). In this arrangement, the AD828

can comfortably drive a 75

Ω back-terminated cable with a

5 MHz, 2 V p-p input, while achieving the harmonic distortion

performance outlined in the following table.

Configuration

2nd Harmonic

1. No Load

–78.5 dBm

2. 150

Ω R

–63.8 dBm

3. 150

Ω R

Ω R

C

–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 provides 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 operate from low

satisfy the following equation:

1.1k

7.5

75

75

75

0.1 F

1/2

AD828

1

8

1 F

1k

1k

1/2

AD828

6

5

7

1k

0.1 F

1 F

4

3

2

Figure 10. Low Distortion Amplifier

OUTLINE DIMENSIONS

8-Lead Plastic Dual-in-Line Package [PDIP]

(N-8)

Dimensions shown in inches and (millimeters)

SEATING

PLANE

0.0598 (1.52)

0.0150 (0.38)

0.2098

(5.33)

MAX

0.0220 (0.56)

0.0142 (0.36)

0.1598 (4.06)

0.1154 (2.93)

0.0697 (1.77)

0.0453 (1.15)

0.1299

(3.30)

MIN

8

1

4

5

PIN 1

0.2799 (7.11)

0.2402 (6.10)

0.1000 (2.54)

BSC

0.4299 (10.92)

0.3480 (8.84)

0.1949 (4.95)

0.1154 (2.93)

0.0150 (0.38)

0.0079 (0.20)

0.3248 (8.25)

0.3000 (7.62)

8-Lead Standard Small Outline Package [SOIC]

(R-8)

Dimensions shown in millimeters and (inches)

0.25 (0.0098)

0.19 (0.0075)

1.27 (0.0500)

0.41 (0.0160)

0.50 (0.0196)

0.25 (0.0099)

45

8

0

1.75 (0.0688)

1.35 (0.0532)

SEATING

PLANE

0.25 (0.0098)

0.10 (0.0040)

85

4

1

5.00 (0.1968)

4.80 (0.1890)

PIN 1

0.1574 (4.00)

0.1497 (3.80)

1.27 (0.0500)

BSC

6.20 (0.2440)

5.80 (0.2284)

0.51 (0.0201)

0.33 (0.0130)

COPLANARITY

CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS

(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR

REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN

COMPLIANT TO JEDEC STANDARDS MS-012 AA