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MAS8444A Datasheet, PDF (1/9 Pages) Micro Analog systems – OCTAL 6-BIT TRIMMER IC | |||
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DA8444A.005
May 31, 1996
MAS8444A
OCTAL 6-BIT TRIMMER IC
⢠Eight discrete DACs
⢠I2C-bus slave receiver
⢠Voltage output
DESCRIPTION
The MAS8444a comprises eight digital to analog
converters (DACs) each controlled by a two-wire I2C
bus. The DACs are individually programmed using an
6-bit word to select an output from one of 64 voltage
steps. The maximum output voltage of all DACs is set
by Vmax. At power-on all outputs are set to their lowest
value. The I2C-bus slave receiver has 3 programmable
address pins (2 in the SO16 package).
FEATURES
⢠Rail to rail output stages
⢠Octal 6-bit DACs on a single monolithic chip
⢠Power supply¡ range from +5V to +12V
⢠-25 C to +85 C temperature range
⢠16-pin PDIL and SO package
⢠pin to pin compatibility with TDA8444
APPLICATION
⢠Trimmer replacement
⢠Automatic gain control
⢠High resolution monitors
BLOCK DIAGRAM
SDA 3
SCL 4
A0 5
A1 6
A2 7
I2C Bus
Slave
Receiver
Vmax 2
Reference
Voltage
Generator
18
VDD GND
6-BIT DAC
6-BIT DAC
6-BIT DAC
6-BIT DAC
6-BIT DAC
6-BIT DAC
6-BIT DAC
6-BIT DAC
DAC7
DAC6
DAC5
DAC4
DAC3
DAC2
DAC1
DAC0
1
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