SGS Thomson Microelectronics TDA7237 Datasheet

QUAD DIFFERENTIAL LINE DRIVER

DESCRIPTION

The quad differential line driver is a monolithic in­tegrated circuit intended to provide low noise, low
distortion voltage gain.

Additionally, the signal is converted from a single
ended to a differential signal pair for applications
reuiring signal isolation from DC grounded.

The four channel’s gains are matched within 1dB.

TDA7237

PRODUCT PREVIEW

DIP18

ORDERING NUMBER: TDA7237

BLOCK DIAGR A M

10µF

10µF

10µF

10µF

10µF

C(ext)

CH1I

GND

CH2I

CH3I

CH4I

18

3

5

4

7

8

1,2,6

N.C.

BIAS

GENERATOR

V

17

CH1

CH2

CH3

CH4

CC

16
15

14
13

12
11

10

9

D95AU385

CH1Iout
CH1Nout

CH2Iout
CH2Nout

CH3Iout
CH3Nout

CH4Iout
CH4Nout

November 1995

This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

1/5

TDA7237

ABSOLUTE MAX IMUM RAT INGS

Symbol Parameter Value Unit

V

S

P

tot

T

amb

T

stg

PIN CONN E CT ION

Supply Voltage 20 V
Total Power Dissipation 750 mW
Operating Ambient Temperature -40 to 85 °C
Storage Temperature -55 to 150 °C

N.C.

N.C.
CH1I
CH2I
GND

N.C.
CH3I
CH4I

CH4NO

1
2
3
4
5
6
7
8
9 CH4IO

D95AU386

17
16
15
14
13
12
11
10

CEXT18
V

S

CH1IO
CH1NO
CH2IO
CH2NO
CH3IO
CH3NO

THERMAL DAT A

Symbol Parameter Value Unit

Rth j-pins Thermal Resistance junction - pins 90 °C/W

PIN FUNCTIONS

N. Name Function

1 N.C.
2 N.C.
3 CH1I Input to channel one
4 CH2I Input to channel two
5 GND Ground
6 N.C.
7 CH3I Input to channel three
8 CH4I Input to channel four

9 CH4NO Channel four non inverting output
10 CH4IO Channel four inverting output
11 CH3NO Channel three non inverting output
12 CH3IO Channel three inverting output
13 CH2NO Channel two non inverting output
14 CH2IO Channel two inverting output
15 CH1NO Channel one non inverting output
16 CH1IO Channel one inverting output
17 V
18 CEXT By-pass Capacitor

S

Supply Voltage

2/5