Fina l Ele c tric a l Sp e c ific a tio ns
LTC1664
Mic ro p o we r Qua d
10-Bit DAC
Ja nua ry 2000
U
DESCRIPTIO
FEATURES
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
just59µAtotalsupplycurrent, yetis capableofsupplying
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.
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Tiny: 4 DACs in the Board Space of an SO-8
Micropower: 59µA per DAC Plus
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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
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0V-to-V Output
CC
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Reference Input Has Constant Impedance over All
Codes—Eliminates External Reference Buffer
Individually Addressable DACs
Differential Nonlinearity: ≤ ±0.75LSB Max
Pin-Compatible Octal Version Available (LTC1660)
Linear Technology’s proprietary, inherently monotonic
voltage interpolation architecture provides excellent lin-
earity while allowing for an exceptionally small external
form factor.
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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.
U
APPLICATIO S
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Mobile Communications
Remote Industrial Devices
Automatic Calibration for Manufacturing
Portable Battery-Powered Instruments
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, LTC and LT are registered trademarks of Linear Technology Corporation.
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Trim/Adjust Applications
W
BLOCK DIAGRA
GND
1
2
16
5
V
CC
LTC1664 Differential Nonlinearity (DNL)
10-BIT
DAC A
10-BIT
DAC D
V
V
OUT D
OUT A
1
V
CC
= 5V
0.8
0.6
V
REF
= 4.096V
10-BIT
DAC B
10-BIT
DAC C
0.4
V
OUT B
V
OUT C
3
4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1
CONTROL
LOGIC
ADDRESS
DECODER
REF
CS/LD
SCK
CLR
6
7
8
11
10
9
D
OUT
SHIFT REGISTER
0
256
512
768
1023
CODE
1664 G08
D
IN
1664 BD
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tationthattheinterconnectionofits circuits as describedhereinwillnotinfringeonexistingpatentrights.
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