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MC144112 Datasheet PDF : 6 Pages
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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Advance Information
Quad Six-Bit Digital-to-Analog
Converter
CMOS
The MC144112 contains four independent DACs which are controlled
through a common serial data port. When all DACs are utilized, there are 24 bits
in the serial data stream. However, if not all DACs are utilized, the bit stream
length may be reduced by up to six bits per unused DAC.
For new designs, the MC144112 is preferred over the MC144110 and
MC144111. The newer MC144112 offers a wider operating temperature range,
lower operating supply voltage, and lower supply current.
• Operating Supply Voltage Range: 2.7 to 5.5 V *
• Maximum Supply Current (per Package) —
All DAC Outputs = Zero: 1.25 mA @ 2.7 V
2.1 mA @ 4.5 V
All DAC Outputs = Full Scale: 30 µA @ 5.5 V
• Integral Nonlinearity: – 1 1/4 to 1/4 LSB
• Operating Temperature Range: – 40 to 85°C
• Direct R–2R Network Outputs
• Direct Interface to Motorola SPI Serial Data Port
• Digital Data Output Permits Cascading
BLOCK DIAGRAM
R1 OUT R2 OUT R3 OUT R4 OUT
3
5
10
12
Order this document
by MC144112/D
MC144112
14
1
D SUFFIX
SOG PACKAGE
CASE 751A
ORDERING INFORMATION
MC144112D SOG Package
Plastic DIP availability
dependent on market demand.
PIN ASSIGNMENT
Din 1
NC 2
R1 Out 3
NC 4
R2 Out 5
ENB 6
VSS 7
14 VDD
13 Dout
12 R4 Out
11 NC
10 R3 Out
9 NC
8 CLK
NC = NO CONNECTION
R–2R LADDER NETWORKS
6
ENB
8
CLK
1
Din
6
6
6
6
INVERTING BUFFERS
6
6
6
6
LOAD
LATCHES
6
6
6
6
D **
CQ
CLOCK
24–BIT SHIFT REGISTER
DATA
13 Dout
R4 OUT
VDD
2R
R
R
R
RR
2R 2R 2R 2R 2R 2R
R–2R DETAIL
* This product is being evaluated for operation at supply voltages less than 2.7 V. Contact your Motorola representative for further information.
** Transparent Latch
This document contains information on a new product. Specifications and information herein are subject to change without notice.
REV 3
2/98 TN98030200
©MOMoTtoOroRla,OInLc.A1998
MC144112
1
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