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DAC1020LIV Datasheet

  • DAC1020LIV

  • 10-Bit, 12-Bit Binary Multiplying D/A Converter

  • 14頁

  • NSC

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DAC1020 DAC1021 DAC1022 10-Bit Binary Multiplying D A Converter
DAC1220 DAC1222 12-Bit Binary Multiplying D A Converter
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 V
a
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
Y
Y
Y
Y
Y
Y
Y
Y
Y
Linearity specified with zero and full-scale adjust only
Non-linearity guaranteed over temperature
Integrated thin film on CMOS structure
10-bit or 12-bit resolution
Low power dissipation 10 mW 15V typ
Accepts variable or fixed reference
b
25V
s
V
REF
s
25V
4-quadrant multiplying capability
Interfaces directly with DTL TTL and CMOS
Fast settling time 500 ns typ
Low feedthrough error
LSB 100 kHz typ
Equivalent Circuit
Note Switches shown in digital high state
TL H 5689 鈥?1
Ordering Information
Temperature Range
Non-
Linearity
0 05%
0 10%
0 20%
Package Outline
Temperature Range
Non-
Linearity
0 05%
0 20%
DAC1220LCN
DAC1222LCN
DAC1020LCN
DAC1021LCN
DAC1022LCN
10-BIT D A CONVERTERS
0 C to 70 C
AD7520LN AD7530LN
AD7520KN AD7530KN
AD7520JN AD7530JN
N16A
12-BIT D A CONVERTERS
0 C to 70 C
AD7521LN AD7531LN
AD7521JN AD7531JN
N18A
b
40 C to
a
85 C
b
40 C to 85 C
DAC1020LCV
DAC1020LIV
V20A
DAC1220LCJ
DAC1222LCJ
AD7521LD AD7531LD
AD7521JD AD7531JD
J18A
Package Outline
Note
Devices may be ordered by either part number
C
1996 National Semiconductor Corporation
TL H 5689
RRD-B30M96 Printed in U S A
http
www national com

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