
LTC1665/LTC1660
1
166560fa
BLOCK DIAGRAM
FEATURES
DESCRIPTION
Micropower Octal
8-Bit and 10-Bit DACs
The 8-bit LTC1665 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.
LinearTechnology’sproprietary,inherentlymonotonicvolt-
age interpolation architecture provides excellent linearity
whileallowingforanexceptionallysmallexternalformfactor.
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.
LTC1665 Differential Nonlinearity (DNL)
LTC1660 Differential Nonlinearity (DNL)
APPLICATIONS
n Tiny: 8 DACs in the Board Space of an SO-8
n Micropower: 56μA per DAC Plus
1μA Sleep Mode for Extended Battery Life
n Pin Compatible 8-Bit LTC1665 and 10-Bit LTC1660
n Wide 2.7V to 5.5V Supply Range
n Rail-to-Rail Voltage Outputs Drive 1000pF
n Reference Range Includes Supply for Ratiometric
0V-to-VCC Output
n Reference Input Impedance is Constant—
Eliminates External Buffer
n Mobile Communications
n Remote Industrial Devices
n Automatic Calibration for Manufacturing
n Portable Battery-Powered Instruments
n Trim/Adjust Applications
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.
2
15
1
GND
VOUT A
VOUT B
VOUT C
VOUT D
REF
CS/LD
SCK
VCC
VOUT H
VOUT G
VOUT F
VOUT E
CLR
DOUT
DIN
166560 BD
16
DAC A
DAC H
3
14
DAC B
DAC G
4
13
DAC C
DAC F
5
7
6
8
10
11
9
12
DAC D
DAC E
ADDRESS
DECODER
CONTROL
LOGIC
SHIFT REGISTER
CODE
0
64
128
192
255
LSB
166560 G09
0.5
0.4
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
VCC = 5V
VREF = 4.096V
CODE
0
256
512
768
1023
LSB
166560 G13
1
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1
VCC = 5V
VREF = 4.096V