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National Semiconductor Electronic Components Datasheet

DAC1221 Datasheet

Binary Multiplying D/A Converter

No Preview Available !

DAC1221 pdf
May 1996
DAC1020 DAC1021 DAC1022
10-Bit Binary Multiplying D A Converter
DAC1220 DAC1222
12-Bit Binary Multiplying D A Converter
General Description
The DAC1020 and the DAC1220 are respectively 10 and
12-bit binary multiplying digital-to-analog converters A de-
posited thin film R-2R resistor ladder divides the reference
current and provides the circuit with excellent temperature
tracking characteristics (0 0002% C linearity error temper-
ature coefficient maximum) The circuit uses CMOS current
switches and drive circuitry to achieve low power consump-
tion (30 mW max) and low output leakages (200 nA max)
The digital inputs are compatible with DTL TTL logic levels
as well as full CMOS logic level swings This part combined
with an external amplifier and voltage reference can be
used as a standard D A converter however it is also very
attractive for multiplying applications (such as digitally con-
trolled gain blocks) since its linearity error is essentially in-
dependent of the voltage reference All inputs are protected
from damage due to static discharge by diode clamps to Va
and ground
This part is available with 10-bit (0 05%) 9-bit (0 10%) and
8-bit (0 20%) non-linearity guaranteed over temperature
(note 1 of electrical characteristics) The DAC1020
DAC1021 and DAC1022 are direct replacements for the 10-
bit resolution AD7520 and AD7530 and equivalent to the
AD7533 family The DAC1220 and DAC1222 are direct re-
placements for the 12-bit resolution AD7521 and AD7531
family
Features
Y Linearity specified with zero and full-scale adjust only
Y Non-linearity guaranteed over temperature
Y Integrated thin film on CMOS structure
Y 10-bit or 12-bit resolution
Y Low power dissipation 10 mW 15V typ
Y Accepts variable or fixed reference b25VsVREFs25V
Y 4-quadrant multiplying capability
Y Interfaces directly with DTL TTL and CMOS
Y Fast settling time 500 ns typ
Y Low feedthrough error LSB 100 kHz typ
Equivalent Circuit
Note Switches shown in digital high state
Ordering Information
10-BIT D A CONVERTERS
TL H 5689 – 1
Temperature Range
0 C to 70 C
b40 C to 85 C
Non-
Linearity
0 05%
0 10%
0 20%
DAC1020LCN
DAC1021LCN
DAC1022LCN
AD7520LN AD7530LN
AD7520KN AD7530KN
AD7520JN AD7530JN
DAC1020LCV
DAC1020LIV
Package Outline
N16A
V20A
12-BIT D A CONVERTERS
Temperature Range
0 C to 70 C
b40 C to a85 C
Non-
Linearity
0 05%
0 20%
DAC1220LCN
DAC1222LCN
AD7521LN AD7531LN
AD7521JN AD7531JN
DAC1220LCJ
DAC1222LCJ
AD7521LD AD7531LD
AD7521JD AD7531JD
Package Outline
N18A
J18A
Note Devices may be ordered by either part number
C1996 National Semiconductor Corporation TL H 5689
RRD-B30M96 Printed in U S A
http www national com


National Semiconductor Electronic Components Datasheet

DAC1221 Datasheet

Binary Multiplying D/A Converter

No Preview Available !

DAC1221 pdf
Absolute Maximum Ratings (Note 5)
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Va to Gnd
17V
VREF to Gnd
Digital Input Voltage Range
g25V
Va to Gnd
DC Voltage at Pin 1 or Pin 2 (Note 3)
b100 mV to Va
Storage Temperature Range
b65 C to a150 C
Lead Temperature (Soldering 10 sec )
Dual-In-Line Package (plastic)
Dual-In-Line Package (ceramic)
260 C
300 C
ESD Susceptibility (Note 4)
800V
Operating Ratings
Temperature (TA)
DAC1020LIV DAC1220LCJ
DAC1222LCJ
DAC1020LCN DAC1020LCV
DAC1021LCN
DAC1022LCN DAC1220LCN
DAC1222LCN
Min
b40
0
0
0
Max
a85
a70
a70
a70
Units
C
C
C
C
Electrical Characteristics (Va e 15V VREF e 10 000V TA e 25 C unless otherwise specified)
Parameter
Conditions
DAC1020 DAC1021 DAC1220 DAC1222
DAC1022
Units
Min Typ Max Min Typ Max
Resolution
10 12
Bits
Linearity Error
10-Bit Parts
9-Bit Parts
8-Bit Parts
TMINkTAkTMAX
b10VkVREFk a 10V
(Note 1) End Point Adjustment Only
(See Linearity Error in Definition of Terms)
DAC1020 DAC1220
DAC1021
DAC1022 DAC1222
0 05
0 10
0 20
0 05 % FSR
0 10 % FSR
0 20 % FSR
Linearity Error Tempco
b10VsVREFs a 10V
(Notes 1 and 2)
0 0002
0 0002 % FS C
Full-Scale Error
b10VsVREFs a 10V
(Notes 1 and 2)
03 10
03 10
% FS
Full-Scale Error Tempco
TMINkTAkTMAX
(Note 2)
0 001
0 001 % FS C
Output Leakage Current
IOUT 1
IOUT 2
Power Supply Sensitivity
TMINsTAsTMAX
All Digital Inputs Low
All Digital Inputs High
All Digital Inputs High
14VsVas16V (Note 2)
(Figure 2)
0 005
200
200
200 nA
200 nA
0 005
% FS V
VREF Input Resistance
Full-Scale Current Settling
Time
RLe 100X from 0 to 99 95%
FS
All Digital Inputs Switched
Simultaneously
10 15
20 10 15
20
kX
500 500 ns
VREF Feedthrough
All Digital Inputs Low
VREFe20 Vp-p 100 kHz
J Package (Note 4)
N Package
10
69
25
10 mVp-p
6 9 mVp-p
2 5 mVp-p
Output Capacitance
IOUT 1
IOUT 2
All Digital Inputs Low
All Digital Inputs High
All Digital Inputs Low
All Digital Inputs High
40 40 pF
200 200 pF
200 200 pF
40 40 pF
http www national com
2


Part Number DAC1221
Description Binary Multiplying D/A Converter
Maker National Semiconductor
Total Page 14 Pages
PDF Download
DAC1221 pdf
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