DAC1218 Datasheet, PDF (1/12 Pages) National Semiconductor (TI) – 12-Bit Binary Multiplying D/A Converter

December 1994
DAC1218 DAC1219
12-Bit Binary Multiplying D A Converter
General Description
The DAC1218 and the DAC1219 are 12-bit binary 4-quad-
rant multiplying D to A converters The linearity differential
non-linearity and monotonicity specifications for these con-
verters are all guaranteed over temperature In addition
these parameters are specified with standard zero and full-
scale adjustment procedures as opposed to the impractical
best fit straight line guarantee
This level of precision is achieved though the use of an
advanced silicon-chromium (SiCr) R-2R resistor ladder net-
work This type of thin-film resistor eliminates the parasitic
diode problems associated with diffused resistors and al-
lows the applied reference voltage to range from b25V to
25V independent of the logic supply voltage
CMOS current switches and drive circuitry are used to
achieve low power consumption (20 mW typical) and mini-
mize output leakage current errors (10 nA maximum)
Unique digital input circuitry maintains TTL compatible input
threshold voltages over the full operating supply voltage
range
The DAC1218 and DAC1219 are direct replacements for
the AD7541 series AD7521 series and AD7531 series with
a significant improvement in the linearity specification In
applications where direct interface of the D to A converter to
a microprocessor bus is desirable the DAC1208 and
DAC1230 series eliminate the need for additional interface
logic
Features
Y _{Linearity specified with zero and full-scale adjust only}
Y _{Logic inputs which meet TTL voltage level specs (1 4V}
logic threshold)
Y _{Works with} g_{10V reference full 4-quadrant}
multiplication
Y _{All parts guaranteed 12-bit monotonic}
Key Specifications
Y _{Current Settling Time}
Y _Resolution
Y _{Linearity (Guaranteed}
over temperature)
Y _{Gain Tempco}
Y _{Low Power Dissipation}
Y _{Single Power Supply}
1 ms
12 Bits
12 Bits (DAC1218)
11 Bits (DAC1219)
1 5 ppm C
20 mW
5 V_DC to 15 V_DC
Typical Application
Connection Diagram
Dual-In-Line Package
 ^{A1 A2 A3}
V_OUT e bV_REF
aaa
248
where AN e 1 if digital input is high
AN e 0 if digital input is low
Ordering Information
J ^A12
4096
Temperature Range
Non
Linearity
0 012%
0 024%
0 C to a70 C
DAC1218LCJ-1
TL H 5691 – 1
b40 C to a85 C
DAC1218LCJ
DAC1219LCJ
TL H 5691 – 15
Top View
Package Outline
J18A Cerdip
J18A Cerdip
BI-FETTM is a trademark of National Semiconductor Corp
C1995 National Semiconductor Corporation TL H 5691
RRD-B30M115 Printed in U S A