LTC2600/LTC2610/LTC2620

1

2600fe

BLOCK DIAGRAM

DESCRIPTION

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 and 20-lead 4mm × 5mm QFN

packages. They have built-in high performance output

buffers and are guaranteed monotonic.

These parts establish new board-density benchmarks for

16-and14-bitDACsandadvanceperformancestandardsfor

output drive, crosstalk and load regulation in single-supply,

voltage-output multiples.

The parts use a simple SPI/MICROWIRE compatible 3-wire

serial interface which can be operated at clock rates up

to 50MHz. Daisychain 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.

FEATURES

APPLICATIONS

LTC2600: 16 Bits

LTC2610: 14 Bits

LTC2620: 12 Bits

and 20-Lead 4mm × 5mm QFN Packages

2

15

1

GND

REF

CS/LD

SCK

CLR

SDO

SDI

2600 BD

16

DAC A

3

14

4

13

5

7

6

8

(1)

(20)

(2)

(3)

(4)

(7)

(5)

(8)

(16)

(17)

(15)

(14)

(13)

(10)

(11)

(9)

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

NOTE: NUMBERS IN PARENTHESIS REFER TO THE UFD PACKAGE

Differential Nonlinearity (LTC2600)

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

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.