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LTC2640AITS8-HZ12#TRPBF

Description
DAC 1-CH 12-bit 8-Pin TSOT-23 T/R
File Size383KB,24 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric View All

LTC2640AITS8-HZ12#TRPBF Overview

DAC 1-CH 12-bit 8-Pin TSOT-23 T/R

LTC2640AITS8-HZ12#TRPBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
Converter TypeGeneral Purpose
Resolution12bit
Number of DAC Channels1
Number of Outputs per Chip1
Maximum Settling Time (us)4.6(Typ)
Digital Interface TypeSerial (3-Wire, SPI, Microwire)
Output TypeVoltage
Output PolarityUnipolar
Voltage ReferenceExternal|Internal
Minimum Single Supply Voltage (V)4.5
Typical Single Supply Voltage (V)5
Maximum Single Supply Voltage (V)5.5
Power Supply TypeSingle
Integral Nonlinearity Error±1LSB
Full Scale Error±0.4%FSR
Digital Supply SupportNo
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
PackagingTape and Reel
Supplier Temperature GradeIndustrial
Pin Count8
Standard Package NameSOT-23
Supplier PackageTSOT-23
MountingSurface Mount
Package Height0.9(Max)
Package Length2.9
Package Width1.75(Max)
PCB changed8
Lead ShapeGull-wing
FEATURES
n
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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