1

LTC2609/LTC2619/LTC2629

26091929f

Quad 16-/14-/12-Bit

Rail-to-Rail DACs with

The LTC

12-bit, 2.7V-to-5.5V rail-to-rail voltage output DACs in a

16-lead SSOP package. They have built-in high perfor-

mance output buffers and are guaranteed monotonic.

These parts establish new board-density benchmarks for

16- and 14-bit DACs and advance performance standards

for output drive and load regulation in single-supply,

voltage-output DACs.

LTC2609/LTC2619/LTC2629 operate in both the standard

mode (clock rate of 100kHz) and the fast mode (clock rate

of 400kHz).

The LTC2609/LTC2619/LTC2629 incorporate a power-on

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

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

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

power-on reset circuit resets the LTC2609-1/LTC2619-1/

LTC2629-1 to midscale. The voltage outputs stay at

midscale until a valid write and update take place.

LTC2609: 16 Bits

LTC2619: 14 Bits

LTC2629: 12 Bits

µA per DAC at 3V

µA (Max)

±15mA, Min)

µV)

Zero Scale

to Midscale

Differential Nonlinearity

(LTC2609)

APPLICATIO S

FEATURES

DESCRIPTIO

BLOCK DIAGRA

CODE

0

16384

32768

49152

65535

2609 G02

1.0

0.8

0.6

0.4

0.2

0

–0.2

–0.4

–0.6

–0.8

–1.0

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

All other trademarks are the property of their respective owners.

Protected by U.S. Patents, including 5396245. Patent pending.

INTERFACE

ADDRESS

DECODE

LOGIC

32-BIT SHIFT REGISTER

SDA

2609 BD

9

REFB

6

SCL

8

5

REFA

3

REFLO

2

GND

1

DAC A

DAC B

REFC

12

13

14

CA2

7

CA1

10

CA0

11

REFD

15

16

DAC D

DAC C

CONTROL

LOGIC