
LTC1664
1
1664fa
Block Diagram
Features
Description
Micropower Quad
10-Bit DAC
TheLTC1664integratesfouraccurate,seriallyaddressable
10-bit digital-to-analog converters (DACs) in a tiny 16-pin
narrowSSOPpackage.EachbufferedDACdrawsjust59A
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 1A.
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.
Differential Nonlinearity (DNL)
applications
n
Tiny: 4 DACs in the Board Space of an SO-8
n
Micropower: 59A per DAC Plus
1A 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 VCC 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)
n
Mobile Communications
n
Remote Industrial Devices
n
Automatic Calibration for Manufacturing
n
Portable Battery-Powered Instruments
n
Trim/Adjust Applications
CODE
0
256
512
768
1023
LSB
1664 G02
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
VCC = 5V
VREF = 4.096V
2
5
1
GND
VOUT A
VOUT B
REF
CS/LD
SCK
VCC
VOUT D
VOUT C
CLR
DOUT
DIN
1664 BD
16
10-BIT
DAC A
10-BIT
DAC D
3
4
10-BIT
DAC B
10-BIT
DAC C
7
6
8
10
11
9
ADDRESS
DECODER
CONTROL
LOGIC
SHIFT REGISTER