TL32088

DIFFERENTIAL ANALOG BUFFER AMPLIFIER

FOR THE TLC320AD58

SLAS123B – MARCH 1995 – REVISED NOVEMBER 1995

1

POST OFFICE BOX 655303

18-Bit Stereo Audio Sigma-Delta Analog-to-

Digital Converter TLC320AD58C

– THD+N... 0.00056% Typ

– SNR... 108-dB Typ

description

The TL32088 is an analog signal conditioning

integrated circuit built using a proprietary Texas

Instruments bipolar process. This device is used

for the analog signal input stage for the 18-bit,

stereo

audio,

sigma-delta,

analog-to-digital

converter (ADC) TLC320AD58C exclusively. The

TL32088

can

convert

input

signals

from

single-ended to differential and differential to

single-ended. The TL32088 also implements a single-ended to single-ended and differential to differential

amplifier buffer. The differential output can be connected to the TLC320AD58C directly. The TLC32088 is

composed of high performance amplifiers that offer wide output swing with low distortion and low noise. The

reference voltage for the internal amplifier circuit is provided from an internal voltage reference circuit.

The TL32088 provides a wide output swing while maintaining 0.00056% THD+N and 108-dB SNR and,

therefore, is ideally suited for high-end audio systems.

functional block diagram

_

+

_

+

_

+

5 k

Ω

5 k

Ω

R OUT

R OUT

_

+

5 k

Ω

5 k

Ω

L OUT

L OUT

OUT R

REF R

OUT L

REF L

IN R–

IN R+

REF L1

IN L+

IN L–

AOUT R1

AOUT R2

AOUT L2

AOUT L1

R1

L1

L2

R2

FLTR 1

FLTR 2

FLTL 1

FLTL 2

REF R1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

Copyright

© 1995, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

AVAILABLE OPTIONS

PACKAGE

SMALL OUTLINE

(NS)

TA

0

°C to 70°C

TL32088CNS

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

REF L1

IN L+

IN L–

OUT L

REF L

FLTL 1

FLTL 2

AOUT L1

AOUT L2

REF R1

IN R+

IN R–

OUT R

REF R

FLTR 1

FLTR 2

AOUT R1

AOUT R2

NS PACKAGE

(TOP VIEW)