TDA844 datasheet(2/16 Pages) PHILIPS

2 / 16 page

1999 Apr 29

Philips Semiconductors

Product speciﬁcation

Octuple 6-bit DACs with I2C-bus

TDA8444; TDA8444T;

TDA8444AT

FEATURES

• Eight DACs with 6-bit resolution

• Adjustable common output swing

• Push-pull outputs

• Outputs short-circuit protected

• Three programmable slave address bits

• Large supply voltage range

• Low temperature coefficient.

GENERAL DESCRIPTION

The interface circuit is a bipolar IC in a DIP16, SO16, or

SO20 package made in an I2L-compatible 18 V process.

The TDA8444 contains eight programmable 6-bit DAC

outputs, an I2C-bus slave receiver with three (two for

SO16) programmable address bits and one input (VMAX) to

set the maximum output voltage. Each DAC can be

programmed separately by a 6-bit word to 64 values, but

VMAX determines the maximum output voltage for all

DACs. The resolution will be approximately 1

⁄64VMAX.

At power-on all DACs are set to their lowest value.

QUICK REFERENCE DATA

ORDERING INFORMATION

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

VCC

supply voltage

4.5

13.2

ICC

supply current

VCC =12V

−

power dissipation

−

170

−

VVMAX

input effective voltage

−

VCC − 2.0 V

Vo(DACn)

DAC output voltage

VMAX =VCC

0.1

−

VCC − 0.5 V

Vo(DACn)(max)

maximum DAC output voltage

1 < VMAX <VCC − 2.0

−

VMAX + 0.3 −

Isource(min)

minimum DAC source current

data = 1FH

−−

Isink(min)

minimum DAC sink current

data = 1FH

−−

TYPE

NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

TDA8444

DIP16

plastic dual in-line package; 16 leads (300 mil); long body

SOT38-1

TDA8444T

SO16

plastic small outline package; 16 leads; body width 7.5 mm

SOT162-1

TDA8444AT

SO20

plastic small outline package; 20 leads; body width 7.5 mm

SOT163-1

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