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LTC1660_15

Description
Micropower Octal 8-Bit and 10-Bit DACs
File Size233KB,18 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
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LTC1660_15 Overview

Micropower Octal 8-Bit and 10-Bit DACs

FEATURES
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LTC1665/LTC1660
Micropower Octal
8-Bit and 10-Bit DACs
DESCRIPTION
The 8-bit LTC
®
1665 and 10-bit LTC1660 integrate eight
accurate, serially addressable digital-to-analog convert-
ers (DACs) in tiny 16-pin narrow SSOP packages. Each
buffered DAC draws just 56μA total supply current, yet
is capable of supplying DC output currents in excess
of 5mA and reliably driving capacitive loads to 1000pF.
Sleep mode further reduces total supply current to 1μA.
Linear Technology’s proprietary, inherently monotonic volt-
age interpolation architecture provides excellent linearity
while allowing for an exceptionally small external form factor.
Ultralow supply current, power-saving Sleep mode and
extremely compact size make the LTC1665 and LTC1660
ideal for battery-powered applications, while their ease
of use, high performance and wide supply range make
them excellent choices as general purpose converters.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Tiny: 8 DACs in the Board Space of an SO-8
Micropower: 56μA per DAC Plus
1μA Sleep Mode for Extended Battery Life
Pin Compatible 8-Bit LTC1665 and 10-Bit LTC1660
Wide 2.7V to 5.5V Supply Range
Rail-to-Rail Voltage Outputs Drive 1000pF
Reference Range Includes Supply for Ratiometric
0V-to-V
CC
Output
Reference Input Impedance is Constant—
Eliminates External Buffer
APPLICATIONS
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Mobile Communications
Remote Industrial Devices
Automatic Calibration for Manufacturing
Portable Battery-Powered Instruments
Trim/Adjust Applications
BLOCK DIAGRAM
GND
1
16 V
CC
DAC A
DAC H
LTC1665 Differential Nonlinearity (DNL)
0.5
0.4
0.3
0.2
V
CC
= 5V
V
REF
= 4.096V
V
OUT A
2
15 V
OUT H
LSB
0.1
0
–0.1
–0.2
V
OUT B
3
DAC B
DAC G
14 V
OUT G
–0.3
–0.4
–0.5
0
64
128
CODE
192
255
166560 G09
V
OUT C
4
DAC C
DAC F
13 V
OUT F
LTC1660 Differential Nonlinearity (DNL)
1
V
OUT D
5
DAC D
DAC E
12 V
OUT E
0.8
0.6
0.4
REF
6
CONTROL
LOGIC
ADDRESS
DECODER
11
CLR
LSB
0.2
0
–0.2
–0.4
SCK
8
SHIFT REGISTER
9
D
IN
166560 BD
V
CC
= 5V
V
REF
= 4.096V
CS/LD
7
10
D
OUT
–0.6
–0.8
–1
0
256
512
CODE
768
1023
166560 G13
166560fa
1

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Description Micropower Octal 8-Bit and 10-Bit DACs Micropower Octal 8-Bit and 10-Bit DACs
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