LTC1664
Micropower Quad
10-Bit DAC
FEATURES
s
s
DESCRIPTIO
s
s
s
s
s
s
s
Tiny: 4 DACs in the Board Space of an SO-8
Micropower: 59
µ
A per DAC Plus
1µA Sleep Mode for Extended Battery Life
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 Code-Independent
—Eliminates External Reference Buffer
Individually Addressable DACs
Differential Nonlinearity:
≤ ±0.75LSB
Max
Pin-Compatible Octal Version Available (LTC1660)
The LTC
®
1664 integrates four accurate, serially addres-
sable 10-bit digital-to-analog converters (DACs) in a tiny
16-pin Narrow SSOP package. Each buffered DAC draws
just 59µA total supply current, yet is capable of supplying
DC output currents in excess of 5mA and reliably driving
capacitive loads of up 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 LTC1664 ideal for
battery-powered applications, while its ease of use, high
performance and wide supply range make it an excellent
choice as a general-purpose converter.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
s
Mobile Communications
Remote Industrial Devices
Automatic Calibration for Manufacturing
Portable Battery-Powered Instruments
Trim/Adjust Applications
BLOCK DIAGRA
GND
1
10-BIT
DAC A
16 V
CC
10-BIT
DAC D
5
V
OUT D
1.0
0.8
0.6
V
CC
= 5V
V
REF
= 4.096V
V
OUT A
2
V
OUT B
3
10-BIT
DAC B
10-BIT
DAC C
4
V
OUT C
LSB
0.4
0.2
0
–0.2
CONTROL
LOGIC
REF
CS/LD
SCK
6
7
8
ADDRESS
DECODER
11
10
9
CLR
D
OUT
D
IN
1664 BD
–0.4
–0.6
–0.8
SHIFT REGISTER
–1.0
0
256
512
CODE
768
1023
1664 G08
U
Differential Nonlinearity (DNL)
W
U
1
LINER [ LINEAR TECHNOLOGY ]
