
1999 Apr 29
2
Philips Semiconductors
Product specication
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
12
13.2
V
ICC
supply current
VCC =12V
14
mA
P
power dissipation
170
mW
VVMAX
input effective voltage
1
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
V
Isource(min)
minimum DAC source current
data = 1FH
2
mA
Isink(min)
minimum DAC sink current
data = 1FH
2
mA
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