1

LTC2600/LTC2610/LTC2620

2600fa

Octal 16-/14-/12-Bit

Rail-to-Rail DACs in 16-Lead SSOP

The LTC

12-bit, 2.5V-to-5.5V rail-to-rail voltage-output DACs in

16-lead narrow SSOP packages. They have built-in high

performance output buffers and are guaranteed mono-

tonic.

These parts establish new board-density benchmarks for

16- and 14-bit DACs and advance performance standards

for output drive, crosstalk and load regulation in single-

supply, voltage-output multiples.

The parts use a simple SPI/MICROWIRE

3-wire serial interface which can be operated at clock rates

up to 50MHz. Daisy-chain capability and a hardware CLR

function are included.

The LTC2600/LTC2610/LTC2620 incorporate a power-on

reset circuit. During power-up, the voltage outputs rise

less than 10mV above zero scale; and after power-up, they

stay at zero scale until a valid write and update take place.

s

Smallest Pin-Compatible Octal DACs:

LTC2600: 16 Bits

LTC2610: 14 Bits

LTC2620: 12 Bits

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Guaranteed 16-Bit Monotonic Over Temperature

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Wide 2.5V to 5.5V Supply Range

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Low Power Operation: 250

µA per DAC at 3V

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Individual Channel Power-Down to 1

µA, Max

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Ultralow Crosstalk between DACs (<10

µV)

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High Rail-to-Rail Output Drive (

±15mA, Min)

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Double-Buffered Digital Inputs

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Pin-Compatible 10-/8-Bit Versions

(LTC1660/LTC1665)

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Tiny 16-Lead Narrow SSOP Package

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Mobile Communications

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Process Control and Industrial Automation

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Instrumentation

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Automatic Test Equipment

Differential Nonlinearity (LTC2600)

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

2

15

1

GND

REF

CS/LD

SCK

CLR

SDO

SDI

2600 BD

16

DAC A

3

14

4

13

5

7

6

8

10

11

9

12

DECODE

POWER-ON

RESET

CONTROL

LOGIC

32-BIT SHIFT REGISTER

DAC H

DAC B

DAC G

DAC C

DAC F

DAC D

DAC E

CODE

0

16384

32768

49152

65535

2600 G21

1.0

0.8

0.6

0.4

0.2

0

–0.2

–0.4

–0.6

–0.8

–1.0

MICROWIRE is a trademark of National Semiconductor Corporation.

APPLICATIO S

FEATURES

DESCRIPTIO

BLOCK DIAGRA