1

LTC1665/LTC1660

Micropower Octal

8-Bit and 10-Bit DACs

The 8-bit LTC

accurate, serially addressable digital-to-analog convert-

ers (DACs) in tiny 16-pin narrow SSOP packages. Each

buffered DAC draws just 56

µA 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 1

µA.

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.

s

Tiny: 8 DACs in the Board Space of an SO-8

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Micropower: 56

1

µA Sleep Mode for Extended Battery Life

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Pin Compatible 8-Bit LTC1665 and 10-Bit LTC1660

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Wide 2.7V to 5.5V Supply Range

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Rail-to-Rail Voltage Outputs Drive 1000pF

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Reference Range Includes Supply for Ratiometric

s

Reference Input Impedance is Constant—

Eliminates External Buffer

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Mobile Communications

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Remote Industrial Devices

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Automatic Calibration for Manufacturing

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Portable Battery-Powered Instruments

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Trim/Adjust Applications

LTC1665 Differential Nonlinearity (DNL)

FEATURES

DESCRIPTIO

APPLICATIO S

BLOCK DIAGRA

2

15

1

GND

REF

CS/LD

SCK

CLR

1665/60 BD

16

DAC A

DAC H

3

14

DAC B

DAC G

4

13

DAC C

DAC F

5

7

6

8

10

11

9

12

DAC D

DAC E

ADDRESS

DECODER

CONTROL

LOGIC

SHIFT REGISTER

CODE

0

64

128

192

255

1665/60 G09

0.5

0.4

0.3

0.2

0.1

0

–0.1

–0.2

–0.3

–0.4

–0.5

CODE

0

256

512

768

1023

1665/60 G13

1

0.8

0.6

0.4

0.2

0

–0.2

–0.4

–0.6

–0.8

–1

LTC1660 Differential Nonlinearity (DNL)

, LTC and LT are registered trademarks of Linear Technology Corporation.