LTC1665 Datasheet, PDF (1/16 Pages) Linear Technology – Micropower Octal 8-Bit and 10-Bit DACs

FEATURES
s _{Tiny: 8 DACs in the Board Space of an SO-8}
s _{Micropower: 56µA per DAC Plus}
1µA Sleep Mode for Extended Battery Life
s _{Pin Compatible 8-Bit LTC1665 and 10-Bit LTC1660}
s _{Wide 2.7V to 5.5V Supply Range}
s _{Rail-to-Rail Voltage Outputs Drive 1000pF}
s _{Reference Range Includes Supply for Ratiometric}
0V-to-V_CC Output
s _{Reference Input Impedance is Constant—}
Eliminates External Buffer
U
APPLICATIO S
s _{Mobile Communications}
s _{Remote Industrial Devices}
s _{Automatic Calibration for Manufacturing}
s _{Portable Battery-Powered Instruments}
s _{Trim/Adjust Applications}
LTC1665/LTC1660
Micropower Octal
8-Bit and 10-Bit DACs
DESCRIPTIO
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
voltage interpolation architecture provides excellent lin-
earity 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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
BLOCK DIAGRA
GND 1
V_{OUT A} 2
DAC A
DAC H
V_{OUT B} 3
DAC B
DAC G
V_{OUT C} 4
DAC C
DAC F
V_{OUT D} 5
REF 6
CS/LD 7
SCK 8
DAC D
DAC E
CONTROL
LOGIC
ADDRESS
DECODER
SHIFT REGISTER
16 V_CC
15 V_{OUT H}
14 VOUT G
13 VOUT F
12 VOUT E
11 CLR
10 D_OUT
9 D_IN
1665/60 BD
LTC1665 Differential Nonlinearity (DNL)
0.5
V_CC = 5V
0.4 _{VREF = 4.096V}
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
0
64
128
CODE
192
255
1665/60 G09
LTC1660 Differential Nonlinearity (DNL)
1
0.8
V_CC = 5V
V_REF = 4.096V
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1
0
256
512
CODE
768
1023
1665/60 G13
1