DAC8408 반도체 회로 부품 판매점
Quad 8-Bit Multiplying CMOS D/A Converter with Memory
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 Analog Devices |
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Quad 8-Bit Multiplying CMOS
D/A Converter with Memory
DAC8408
FEATURES
Four DACs in a 28 Pin, 0.6 Inch Wide DIP or 28-Pin JEDEC
Plastic Chip Carrier
؎1/4 LSB Endpoint Linearity
Guaranteed Monotonic
DACs Matched to Within 1%
Microprocessor Compatible
Read/Write Capability (with Memory)
TTL/CMOS Compatible
Four-Quadrant Multiplication
Single-Supply Operation (+5 V)
Low Power Consumption
Latch-Up Resistant
Available In Die Form
APPLICATIONS
Voltage Set Points in Automatic Test Equipment
Systems Requiring Data Access for Self-Diagnostics
Industrial Automation
Multichannel Microprocessor-Controlled Systems
Digitally Controlled Op Amp Offset Adjustment
Process Control
Digital Attenuators
GENERAL DESCRIPTION
The 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. The readback function serves as memory
for those systems requiring self-diagnostics.
A common 8-bit TTL/CMOS compatible input port is used to
load data into any of the four DAC data-latches. Control lines
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. The
DAC8408 is bus compatible with most 8-bit microprocessors,
including the 6800, 8080, 8085, and Z80. The DAC8408 oper-
ates on a single +5 volt supply and dissipates less than 20 mW.
The 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.
ORDERING INFORMATION1
Model
Temperature Package
INL DNL Range
Description
DAC8408GP ± 1/4 LSB ± 1/2 LSB 0°C to +70°C
DAC8408ET ± 1/4 LSB ± 1/2 LSB –40°C to +85°C
DAC8408AT2 ± 1/4 LSB ± 1/2 LSB –55°C to +125°C
DAC8408FT ± 1/2 LSB ± 1 LSB –40°C to +85°C
DAC8408BT2 ± 1/2 LSB ± 1 LSB –55°C to +125°C
DAC8408FPC3 ± 1/2 LSB ± 1 LSB –40°C to +85°C
DAC8408FS ± 1/2 LSB ± 1 LSB –40°C to +85°C
DAC8408FP ± 1/2 LSB ± 1 LSB –40°C to +85°C
28-Pin Plastic DIP
28-Pin Cerdip
28-Pin Cerdip
28-Pin Cerdip
28-Pin Cerdip
28-Contact PLCC
28-Pin SOL
28-Pin Plastic DIP
NOTES
1Burn-in is available on commercial and industrial temperature range parts
in cerdip, plastic DIP, and TO-can packages. For outline information see Pack-
age Information section.
2For devices processed in total compliance to MIL-STD-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.
FUNCTIONAL BLOCK DIAGRAM
DAC8408
REV. A
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
DAC8408
ELECTRICAL CHARACTERISTICS (@ VDD = +5 V; VREF = ؎10 V; VOUTA, B, C, D = 0 V; TA = –55؇C to +125؇C apply for
DAC8408AT/BT, TA = –40؇C to +85؇C apply for DAC8408ET/FT/FP/FPC/FS; TA = 0؇C to +70؇C apply for DAC8408GP, unless otherwise noted.
Specifications apply for DAC A, B, C, & D.)
Parameter
Symbol Conditions
DAC8408
Min Typ Max Units
STATIC ACCURACY
Resolution
Nonlinearity1, 2
Differential
Nonlinearity
Gain Error
Gain Tempco3, 6
Power Supply Rejection
(∆VDD = ± 10%)
IOUT 1A, B, C, D
Leakage Current13
N
INL
DNL
GFSE
TCGFS
PSR
ILKG
REFERENCE INPUT
Input Voltage Range
Input Resistance Match4
Input Resistance
DIGITAL INPUTS
Digital Input Low
Digital Input High
Input Current5
Input Capacitance6
DATA BUS OUTPUTS
Digital Output Low
Digital Output High
Output Leakage Current
RIN
VIL
VIH
IIN
CIN
VOL
VOH
ILKG
DAC OUTPUTS6
Propagation Delay7
Settling Time11,12
Output Capacitance
AC Feedthrough
SWITCHING CHARACTERISTICS6, 10
Write to Data Strobe Time
Data Valid to Strobe Set-Up Time
Data Valid to Strobe Hold Time
DAC Select to Strobe Set-Up Time
DAC Select to Strobe Hold Time
Write Select to Strobe Set-Up Time
Write Select to Strobe Hold Time
Read to Data Strobe Width
Data Strobe to Output Valid Time
Output Data to Deselect Time
Read Select to Strobe Set-Up Time
Read Select to Strobe Hold Time
Specifications subject to change without notice.
tPD
tS
COUT
FT
tDS1 or
tDS2
tDSU
tDH
tAS
tAH
tWSU
tWH
tRDS
tCO
tOTD
tRSU
tRH
DAC8408A/E/G
DAC8408B/F/H
DAC8408A/E/G
DAC8408B/F/H
(Using Internal RFB)
TA =+25°C
TA = Full Temperature Range
RA, B, C, D
TA = +25°C
TA = Full Temperature Range
16 mA Sink
400 µA Source
TA = +25°C
TA = Full Temperature Range
DAC Latches All “0s”
DAC Latches All “1s”
(20 Vp-p @ F = 100 kHz)
TA = +25°C
TA = Full Temperature Range
TA = +25°C
TA = Full Temperature Range
TA = +25°C
TA = Full Temperature Range
TA = +25°C
TA = Full Temperature Range
TA = +25°C
TA = Full Temperature Range
8 Bits
± 1/4 LSB
± 1/2 LSB
± 1/2 LSB
± 1 LSB
± 1 LSB
± 2 ± 40 ppm/°C
0.001 %FSR/%
± 30 nA
± 100 nA
± 20 V
±1 %
6 10 14 kΩ
0.8 V
2.4 V
± 0.01 ± 1.0 µA
± 10.0 µA
8 pF
0.4 V
4V
± 0.005 ± 1.0 µA
± 0.075 ± 10.0 µA
150 180 ns
190 250 ns
30 pF
50 pF
54 dB
90 ns
145 ns
150 ns
175 ns
10 ns
0 ns
0 ns
0 ns
0 ns
220 ns
350 ns
320 ns
430 ns
200 ns
270 ns
0 ns
0 ns
–2– REV. A
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DAC8408 converter
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관련 데이터시트
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Quad 8-Bit Multiplying CMOS D/A Converter with Memory - Analog Devices
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Quad 8-Bit Multiplying CMOS D/A Converter with Memory - Analog Devices
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DAC8408FS
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DAC8408FT
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DAC8408GP
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