1

LTC1664

Micropower Quad

10-Bit DAC

January 2000

The LTC

sable 10-bit digital-to-analog converters (DACs) in a tiny

16-pin Narrow SSOP package. Each buffered DAC draws

just 59

µA 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 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 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.

s

Tiny: 4 DACs in the Board Space of an SO-8

s

Micropower: 59

1

µA Sleep Mode for Extended Battery Life

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Wide 2.7V to 5.5V Supply Range

s

Rail-to-Rail Voltage Outputs Drive 1000pF

s

Reference Range Includes Supply for Ratiometric

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Reference Input Has Constant Impedance over All

Codes—Eliminates External Reference Buffer

s

Individually Addressable DACs

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Differential Nonlinearity:

≤ ±0.75LSB Max

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Pin-Compatible Octal Version Available (LTC1660)

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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

2

5

1

GND

REF

CS/LD

SCK

CLR

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

CODE

0

256

512

768

1023

1664 G08

1

0.8

0.6

0.4

0.2

0

–0.2

–0.4

–0.6

–0.8

–1

LTC1664 Differential Nonlinearity (DNL)

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

Final Electrical Specifications

APPLICATIO S

FEATURES

DESCRIPTIO

BLOCK DIAGRA

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-

tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.