LTC1664_15 Datasheet, PDF (1/16 Pages) Linear Technology – Micropower Quad 10-Bit DAC

Features
n _{Tiny: 4 DACs in the Board Space of an SO-8}
n _{Micropower: 59µA per DAC Plus}
1µA Sleep Mode for Extended Battery Life
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 V_CC Output
n _{Reference Input Impedance is Code-Independent}
—Eliminates External Reference Buffer
n _{Individually Addressable DACs}
n _{Differential Nonlinearity: ≤ ±0.75LSB Max}
n _{Pin-Compatible Octal Version Available (LTC1660)}
Applications
n _{Mobile Communications}
n _{Remote Industrial Devices}
n _{Automatic Calibration for Manufacturing}
n _{Portable Battery-Powered Instruments}
n _{Trim/Adjust Applications}
LTC1664
Micropower Quad
10-Bit DAC
Description
The LTC^®1664 integrates four accurate, serially addressable
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.
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.
Block Diagram
GND 1
V_{OUT A} 2
10-BIT
DAC A
V_{OUT B} 3
10-BIT
DAC B
10-BIT
DAC D
10-BIT
DAC C
16 V_CC
5 V_{OUT D}
4 VOUT C
REF 6
CS/LD 7
SCK 8
CONTROL
LOGIC
ADDRESS
DECODER
SHIFT REGISTER
11 CLR
10 D_OUT
9 D_IN
1664 BD
Differential Nonlinearity (DNL)
1.0
V_CC = 5V
0.8 _{VREF = 4.096V}
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0
256
512
768
1023
CODE
1664 G02
1664fa
1