ltc1659cs8-trpbf Linear Technology Corporation, ltc1659cs8-trpbf Datasheet

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ltc1659cs8-trpbf

Manufacturer Part Number
ltc1659cs8-trpbf
Description
Ltc1659 - 12-bit Rail-to-rail Micropower Dac In Msop Package
Manufacturer
Linear Technology Corporation
Datasheet
FEATURES
APPLICATIONS
TYPICAL APPLICATION
OTHER
DACS
μP
TO
Buffered True Rail-to-Rail Voltage Output
Maximum DNL Error: 0.5LSB
12-Bit Resolution
Supply Operation: 3V to 5V
Output Swings from 0V to V
V
Schmitt Trigger On Clock Input Allows Direct
Optocoupler Interface
Power-On Reset Clears DAC to 0V
3-Wire Cascadable Serial Interface
Low Cost
8-Lead SO and MSOP Packages
Digital Calibration
Industrial Process Control
Automatic Test Equipment
Cellular Telephones
REF
Can Tie to V
2
1
3
4
2.7V TO 5.5V
D
CLK
CS/LD
D
IN
OUT
POWER-ON
Functional Block Diagram: 12-Bit Rail-to-Rail DAC
12-BIT
LATCH
RESET
SHIFT
REG
AND
DAC
CC
V
CC
8
12-BIT
DAC
REF
GND
6
REF
5
+
DESCRIPTION
The LTC
12-bit digital-to-analog converter (DAC) in an MSOP pack-
age. It includes a rail-to-rail output buffer amplifi er and an
easy-to-use 3-wire cascadable serial interface.
The LTC1659 output swings from 0V to REF. The REF input
can be tied to V
This allows a rail-to-rail output swing from 0V to V
LTC1659 draws only 250μA from a 5V supply.
Its guaranteed ±0.5LSB maximum DNL makes the LTC1659
excel in calibration, control and trim/adjust applications.
The low power supply current and the small MSOP
package make the LTC1659 ideal for battery-powered
applications.
All other trademarks are the property of their respective owners.
V
1659 TA01
OUT
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
7
®
RAIL-TO-RAIL
VOLTAGE
OUTPUT
1659 is a single supply, rail-to-rail voltage output,
Micropower DAC in
CC
which can range from 2.7V to 5.5V.
12-Bit Rail-to-Rail
–0.5
0.5
MSOP Package
0
0
512
Differential Nonlinearity
1024
vs Input Code
1536
CODE
2048 2560
LTC1659
3072 3584 4095
CC
1659 TA02
. The
1659fa
1

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ltc1659cs8-trpbf Summary of contents

Page 1

... The low power supply current and the small MSOP package make the LTC1659 ideal for battery-powered applications. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 6 REF ...

Page 2

... SYMBOL PARAMETER DAC Resolution Monotonicity DNL Differential Nonlinearity INL Integral Nonlinearity 2 (Note 1) Operating Temperature Range LTC1659CS8 ............................................ 0°C to 70°C + 0.5V LTC1659IS8 ......................................... –40°C to 85°C CC LTC1659CMS8 ......................................... 0°C to 70°C LTC1659IMS8 ...................................... –40°C to 85°C Lead Temperature (Soldering, 10 sec) .................. 300° ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T unless otherwise noted. SYMBOL PARAMETER V Offset Error Offset Error Temperature Coeffi cient OS V Full-Scale Voltage Full-Scale Voltage Temperature Coeffi cient FS Power ...

Page 4

LTC1659 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T unless otherwise noted. SYMBOL PARAMETER Switching (V = 4. Valid to CLK Setup Valid to CLK Hold ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS Integral Nonlinearity (INL –1 –2 –3 –4 –5 0 512 1824 1536 2048 2560 3072 3584 4095 CODE 1659 • G01 Supply Headroom for Full Output Swing vs Load Current 0.6 ...

Page 6

LTC1659 PIN FUNCTIONS CLK (Pin 1): Serial Interface Clock. Internal Schmitt trigger on this input allows direct optocoupler interface. D (Pin 2): Serial Interface Data. Data on the D IN latched into the shift register on the rising edge of ...

Page 7

TIMING DIAGRAM CLK PREVIOUS WORD CS/LD B11 D OUT PREVIOUS WORD DEFINITIONS Differential Nonlinearity (DNL): The difference between the measured change and the ideal 1LSB change for any two adjacent codes. The DNL error between ...

Page 8

LTC1659 OPERATION Serial Interface The data on the D input is loaded into the shift register IN on the rising edge of the clock. The MSB is loaded fi rst. The DAC register loads the data from the shift register ...

Page 9

APPLICATIONS INFORMATION Rail-to-Rail Output Considerations In any rail-to-rail DAC, the output swing is limited to volt- ages within the supply range. If the DAC offset is negative, the output for the lowest codes limits shown in Figure ...

Page 10

LTC1659 TYPICAL APPLICATION 12-Bit Single Supply, Rail-to-Rail Voltage Output DAC PACKAGE DESCRIPTION .050 BSC .245 MIN .030 ±.005 TYP RECOMMENDED SOLDER PAD LAYOUT .010 – .020 (0.254 – 0.508) .008 – .010 (0.203 – 0.254) NOTE: 1. ...

Page 11

... LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX 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 representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 12

... OUT LTC1454 4.5V to 5.5V 4.095V CC OUT LTC1454L 2.7V to 5.5V 2.5V CC OUT Low Power, Complete V DAC in SO-8 Package with OUT Clear Pin LTC1458 4.5V to 5.5V 4.095V CC OUT LTC1458L 2.7V to 5.5V 2.5V CC OUT LT 0507 REV A• PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 1997 1659fa ...

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