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LTC2615| Datasheet

By datasheet - November 4th, 2008

LTC2615| Datasheet

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LTC2605/LTC2615/LTC2625 Octal 16-/14-/12-Bit Rail-to-Rail DACs in 16-Lead SSOP DESCRIPTIO
The LTC 2605/LTC2615/LTC2625 are octal 16-, 14and 12-bit, 2.7V 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 monotonic. 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 the 2-wire I2C compatible serial interface. The LTC2605/LTC2615/LTC2625 operate in both the standard mode (maximum clock rate of 100kHz) and the fast mode (maximum clock rate of 400kHz). The LTC2605/LTC2615/LTC2625 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. The power-on reset circuit resets the LTC2605-1/ LTC2615-1/LTC2625-1 to midscale. The voltage output stays at midscale until a valid write and update takes place.
, LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.

FEATURES

Smallest Pin-Compatible Octal DACs: LTC2605: 16 Bits LTC2615: 14 Bits LTC2625: 12 Bits Guaranteed Monotonic Over Temperature 400kHz I2C Interface Wide 2.7V to 5.5V Supply Range Low Power Operation: 250uA per DAC at 3V Individual Channel Power-Down to 1uA, Max Ultralow Crosstalk Between DACs (<10uV) High Rail-to-Rail Output Drive ( 15mA, Min) Double-Buffered Digital Inputs 27 Selectable Addresses LTC2605/LTC2615/LTC2625: Power-On Reset to Zero Scale LTC2605-1/LTC2615-1/LTC2625-1: Power-On Reset to Midscale Tiny 16-Lead Narrow SSOP Package

APPLICATIO S

Mobile Communications Process Control and Industrial Automation Instrumentation Automatic Test Equipment

BLOCK DIAGRA
GND 1 VOUT A 2 DAC A

16 VCC

REGISTER

REGISTER

REGISTER

REGISTER

DAC H

15 VOUT H

REGISTER

REGISTER

REGISTER

REGISTER

VOUT B

3

DAC B

DAC G

14 VOUT G

REGISTER

REGISTER

REGISTER

REGISTER

DNL (LSB)

VOUT C

4

DAC C

DAC F

13 VOUT F

REGISTER

REGISTER

REGISTER

REGISTER

VOUT D

5

DAC D

DAC E

12 VOUT E

REF

6 32-BIT SHIFT REGISTER

11

CA0

CA2

7

10

CA1

2-WIRE INTERFACE SCL 8

9
2605/15/25 BD

SDA

U

W

U

Differential Nonlinearity (LTC2605)
1.0 0.8 0.6 0.4 0.2 0 0.2 0.4 0.6 0.8 1.0 0 16384 32768 CODE 49152 65535
2605 G02

VCC = 5V VREF = 4.096V

2605f

1


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