TDA1545 datasheet(2/20 Pages) PHILIPS

2 / 20 page

1997 Sep 04

Philips Semiconductors

Preliminary speciﬁcation

Stereo continuous calibration DAC

TDA1545A

FEATURES

• Space saving packages

• Low power consumption

• Low total harmonic distortion

• Wide dynamic range (16-bit resolution)

• Continuous calibration concept

• Easy application: single 3 to 5.5 V rail power supply and

output- and bias current are proportional to the supply

voltage

• Fast settling time permits 2×, 4× and 8× oversampling

(serial input) or double speed operation at 4

oversampling

• Internal bias current ensures maximum dynamic range

• Wide operating temperature range of −40 to +85 °C

• Compatible with most of the Japanese input formats:

time multiplexed, two's complement and TTL

• No zero crossing distortion.

GENERAL DESCRIPTION

The TDA1545A is the first device of a new generation of

the digital-to-analog converters which embodies the

innovative technique of continuous calibration. The largest

bit-currents are repeatedly generated by one single

current reference source. This duplication is based upon

an internal charge storage principle having an accuracy

insensitive to ageing, temperature and process variations.

The device is fabricated in a 1.0

µm CMOS process and

features an extremely low power dissipation, small

package size and easy application. Furthermore, the

accuracy of the high coarse current combined with the

implemented symmetrical offset decoding method

preclude zero-crossing distortion and ensures high quality

audio reproduction. Therefore, the continuous calibration

digital-to-analog converter is eminently suitable for use in

(portable) digital audio equipment.

ORDERING INFORMATION

TYPE

NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

TDA1545A

DIP8

plastic dual in-line package; 8 leads (300 mil)

SOT97-1

TDA1545AT

SO8

plastic small outline package; 8 leads; body width 3.9 mm

SOT96-1

TDA1545ATT

TSSOP14

plastic thin shrink small outline package; 14 leads; body width 4.4 mm

SOT402-1

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