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LTC2640ITS8-HM8#TRMPBF

Description
Digital to Analog Converters - DAC 8-Bit SPI DAC (4.096V ref, Reset to Zero-Scale)
CategoryAnalog mixed-signal IC    converter   
File Size514KB,24 Pages
ManufacturerADI
Websitehttps://www.analog.com
Environmental Compliance
Download Datasheet Download user manual Parametric View All

LTC2640ITS8-HM8#TRMPBF Overview

Digital to Analog Converters - DAC 8-Bit SPI DAC (4.096V ref, Reset to Zero-Scale)

LTC2640ITS8-HM8#TRMPBF Parametric

Parameter NameAttribute value
Brand NameAnalog Devices Inc
Is it lead-free?Contains lead
Is it Rohs certified?conform to
MakerADI
package instructionVSSOP,
Contacts8
Manufacturer packaging code05-08-1637
Reach Compliance Codecompliant
ECCN codeEAR99
Maximum analog output voltage4.096 V
Minimum analog output voltage
Converter typeD/A CONVERTER
Enter bit codeBINARY
Input formatSERIAL
JESD-30 codeR-PDSO-G8
JESD-609 codee3
length2.9 mm
Maximum linear error (EL)0.1953%
Humidity sensitivity level1
Number of digits8
Number of functions1
Number of terminals8
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeVSSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height1 mm
Nominal settling time (tstl)3.7 µs
Nominal supply voltage5 V
surface mountYES
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width1.625 mm
FEATURES
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LTC2640
Single 12-/10-/8-Bit SPI
V
OUT
DACs with
10ppm/°C Reference
DESCRIPTION
The
LTC
®
2640
is a family of 12-, 10-, and 8-bit voltage-
output DACs with an integrated, high-accuracy, low-drift
reference in an 8-lead TSOT-23 package. It has a rail-to-rail
output buffer that is guaranteed monotonic.
The LTC2640-L has a full-scale output of 2.5V, and operates
from a single 2.7V to 5.5V supply. The LTC2640-H has a
full-scale output of 4.096V, and operates from a 4.5V to
5.5V supply. A 10ppm/°C reference output is available at
the REF pin.
Each DAC can also operate in External Reference mode,
in which a voltage supplied to the REF pin sets the full-
scale output.
The LTC2640 DACs use a SPI/MICROWIRE™ compatible
3-wire serial interface which operates at clock rates up
to 50MHz.
The LTC2640 incorporates a power-on reset circuit. Op-
tions are available for Reset to Zero-Scale or Reset to
Mid-Scale after power-up.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
ThinSOT is a trademark of Analog Devices, Inc. All other trademarks are the property of their
respective owners. Protected by U.S. Patents, including 5396245, 5859606, 6891433, 6937178
and 7414561.
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Integrated Precision Reference
2.5V Full-Scale 10ppm/°C (LTC2640-L)
4.096V Full-Scale 10ppm/°C (LTC2640-H)
Maximum INL Error: 1LSB (LTC2640A-12)
Bidirectional Reference: Input or 10ppm/°C Output
Low Noise (0.7mVpp, 0.1Hz to 200kHz)
Guaranteed Monotonic Over Temperature
2.7V to 5.5V Supply Range (LTC2640-L)
Low Power Operation: 180µA at 3V
Power Down to 1.8µA Maximum (C and I Grades)
Asynchronous DAC Clear Pin (LTC2640-Z)
Power-On Reset to Zero or Mid-Scale options
Double-Buffered Data Latches
Guaranteed Operation from –40°C to 125°C (H-Grade)
8-Lead TSOT-23 (ThinSOT™) Package
APPLICATIONS
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Mobile Communications
Process Control and Industrial Automation
Automatic Test Equipment
Portable Equipment
Automotive
Optical Networking
(LTC2640-Z)
REF
INTERNAL
REFERENCE
SWITCH
BLOCK DIAGRAM
V
CC
Integral Nonlinearity (LTC2640A-LZ12)
1.0
V
CC
= 3V
V
FS
= 2.5V
SDI
0.5
INL (LSB)
V
OUT
–1.0
CLR
GND
2640 TA01
SCK
24-BIT
SHIFT
REGISTER
CONTROL
DECODE LOGIC
RESISTOR
DIVIDER
0
DACREF
CS/LD
INPUT
REGISTER
DAC
REGISTER
DAC
–0.5
0
1024
2048
CODE
3072
4095
2640 TA01b
2640fd
For more information
www.linear.com/LTC2640
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