Quad 8-Bit Multiplying CMOS
D/A Converter with Memory
a
DAC8408
FEATURES
A common 8-bit T T L/CMOS compatible input port is used to
Four DACs in a 28 Pin, 0.6 Inch Wide DIP or 28-Pin J EDEC load data into any of the four DAC data-latches. Control lines
Plastic Chip Carrier
؎1/ 4 LSB Endpoint Linearity
Guaranteed Monotonic
DS1, DS2, and A/B determine which DAC will accept data.
Data loading is similar to that of a RAMs write cycle. Data can
be read back onto the same data bus with control line R/W. T he
DAC8408 is bus compatible with most 8-bit microprocessors,
including the 6800, 8080, 8085, and Z80. T he DAC8408 oper-
ates on a single +5 volt supply and dissipates less than 20 mW.
T he DAC8408 is manufactured using PMI’s highly stable,
thin-film resistors on an advanced oxide-isolated, silicon-gate,
CMOS process. PMI’s improved latch-up resistant design elimi-
nates the need for external protective Schottky diodes.
DACs Matched to Within 1%
Microprocessor Com patible
Read/ Write Capability (w ith Mem ory)
TTL/ CMOS Com patible
Four-Quadrant Multiplication
Single-Supply Operation (+5 V)
Low Pow er Consum ption
Latch-Up Resistant
O RD ERING INFO RMATIO N1
Available In Die Form
APPLICATIONS
Tem perature
Range
P ackage
D escription
Voltage Set Points in Autom atic Test Equipm ent
System s Requiring Data Access for Self-Diagnostics
Industrial Autom ation
Multichannel Microprocessor-Controlled System s
Digitally Controlled Op Am p Offset Adjustm ent
Process Control
Model
INL
D NL
DAC8408GP
DAC8408ET
±1/4 LSB ±1/2 LSB 0°C to +70°C
±1/4 LSB ±1/2 LSB –40°C to +85°C
28-Pin Plastic DIP
28-Pin Cerdip
DAC8408AT 2 ±1/4 LSB ±1/2 LSB –55°C to +125°C 28-Pin Cerdip
DAC8408FT
±1/2 LSB ±1 LSB
–40°C to +85°C
–55°C to +125°C 28-Pin Cerdip
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
28-Pin Cerdip
DAC8408BT 2 ±1/2 LSB ±1 LSB
DAC8408FPC 3 ±1/2 LSB ±1 LSB
28-Contact PLCC
28-Pin SOL
28-Pin Plastic DIP
Digital Attenuators
DAC8408FS
DAC8408FP
±1/2 LSB ±1 LSB
±1/2 LSB ±1 LSB
NOT ES
1Burn-in is available on commercial and industrial temperature range parts
in cerdip, plastic DIP, and T O-can packages. For outline information see Pack-
age Information section.
GENERAL D ESCRIP TIO N
T he DAC8408 is a monolithic quad 8-bit multiplying digital-to-
analog CMOS converter. Each DAC has its own reference input,
feedback resistor, and onboard data latches that feature
read/write capability. T he readback function serves as memory
for those systems requiring self-diagnostics.
2For devices processed in total compliance to MIL-ST D-883, add /883 after
part number. Consult factory for 883 data sheet.
3For availability and burn-in information on SO and PLCC packages, contact
your local sales office.
FUNCTIO NAL BLO CK D IAGRAM
DAC8408
REV. A
Inform ation furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assum ed by Analog Devices for its
use, nor for any infringem ents of patents or other rights of third parties
which m ay result from its use. No license is granted by im plication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norw ood, MA 02062-9106, U.S.A.
Tel: 617/ 329-4700
Fax: 617/ 326-8703