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LTC1968CMS8

Description
RMS TO DC CONVERTER, PDSO8
CategoryAnalog mixed-signal IC    converter   
File Size295KB,28 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric Compare View All

LTC1968CMS8 Overview

RMS TO DC CONVERTER, PDSO8

LTC1968CMS8 Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?incompatible
Parts packaging codeMSOP
package instructionPLASTIC, MSOP-8
Contacts8
Manufacturer packaging codeMS8
Reach Compliance Code_compli
ECCN codeEAR99
Converter typeRMS TO DC CONVERTER
JESD-30 codeR-PDSO-G8
JESD-609 codee0
length3 mm
Maximum linear error (EL)0.15%
Humidity sensitivity level1
Number of functions1
Number of terminals8
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeTSSOP
Encapsulate equivalent codeTSSOP8,.19
Package shapeRECTANGULAR
Package formSMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)NOT SPECIFIED
Maximum positive input voltage5.5 V
power supply5 V
Certification statusNot Qualified
Maximum seat height1.1 mm
Maximum supply voltage5.5 V
Minimum supply voltage4.5 V
Nominal supply voltage5 V
surface mountYES
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width3 mm
Base Number Matches1
LTC1968
Precision Wide Bandwidth,
RMS-to-DC Converter
FEATURES
DESCRIPTIO
High Linearity:
0.02% Linearity Allows Simple System Calibration
Wide Input Bandwidth:
Bandwidth to 1% Additional Gain Error: 500kHz
Bandwidth to 0.1% Additional Gain Error: 150kHz
3dB Bandwidth Independent of Input Voltage
Amplitude
No-Hassle Simplicity:
True RMS-DC Conversion with Only One External
Capacitor
Delta Sigma Conversion Technology
Ultralow Shutdown Current:
0.1µA
Flexible Inputs:
Differential or Single Ended
Rail-to-Rail Common Mode Voltage Range
Up to 1V
PEAK
Differential Voltage
Flexible Output:
Rail-to-Rail Output
Separate Output Reference Pin Allows Level Shifting
Small Size:
Space Saving 8-Pin MSOP Package
The LTC
®
1968 is a true RMS-to-DC converter that uses an
innovative delta-sigma computational technique. The ben-
efits of the LTC1968 proprietary architecture, when com-
pared to conventional log-antilog RMS-to-DC converters,
are higher linearity and accuracy, bandwidth independent
of amplitude and improved temperature behavior.
The LTC1968 operates with single-ended or differential in-
put signals and accurately supports crest factors up to 4.
Common mode input range is rail-to-rail. Differential in-
put range is 1V
PEAK
, and offers unprecedented linearity. The
LTC1968 allows hassle-free system calibration at any in-
put voltage.
The LTC1968 has a rail-to-rail output with a separate out-
put reference pin providing flexible level shifting; it oper-
ates on a single power supply from 4.5V to 5.5V. A low power
shutdown mode reduces supply current to 0.1µA.
The LTC1968 is packaged in the space-saving MSOP pack-
age, which is ideal for portable applications.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Protected under U.S. Patent Numbers 6,359,576, 6,362,677 and 6,516,291
APPLICATIO S
True RMS Digital Multimeters and Panel Meters
True RMS AC + DC Measurements
TYPICAL APPLICATIO
Linearity Performance
LINEARITY ERROR (V
OUT
mV DC – V
IN
mV AC
RMS
)
0.2
LTC1968,
∆Σ
0
–0.2
–0.4
–0.6
–0.8
–1.0
60Hz SINEWAVE
0
100
200
300
V
IN
(mV AC
RMS
)
400
500
1968 TA01b
Single Supply RMS-to-DC Converter
4.5V TO 5.5V
V
+
IN1
DIFFERENTIAL
INPUT
0.1µF
OPT. AC
COUPLING
IN2
EN
OUTPUT
LTC1968
OUT RTN
GND
C
AVE
10µF
+
V
OUT
1968 TA01
U
CONVENTIONAL
LOG/ANTILOG
1968f
U
U
1

LTC1968CMS8 Related Products

LTC1968CMS8 LTC1968 LTC1968IMS8
Description RMS TO DC CONVERTER, PDSO8 RMS TO DC CONVERTER, PDSO8 RMS TO DC CONVERTER, PDSO8
Number of functions 1 1 1
Number of terminals 8 8 8
Maximum operating temperature 85 °C 85 Cel 85 °C
Minimum operating temperature -40 °C -40 Cel -40 °C
Maximum positive input voltage 5.5 V 5.5 V 5.5 V
surface mount YES Yes YES
Temperature level INDUSTRIAL INDUSTRIAL INDUSTRIAL
Terminal form GULL WING GULL WING GULL WING
Terminal location DUAL pair DUAL
Brand Name Linear Technology - Linear Technology
Is it Rohs certified? incompatible - incompatible
Parts packaging code MSOP - MSOP
package instruction PLASTIC, MSOP-8 - PLASTIC, MSOP-8
Contacts 8 - 8
Manufacturer packaging code MS8 - MS8
Reach Compliance Code _compli - _compli
ECCN code EAR99 - EAR99
Converter type RMS TO DC CONVERTER - RMS TO DC CONVERTER
JESD-30 code R-PDSO-G8 - R-PDSO-G8
JESD-609 code e0 - e0
length 3 mm - 3 mm
Maximum linear error (EL) 0.15% - 0.15%
Humidity sensitivity level 1 - 1
Package body material PLASTIC/EPOXY - PLASTIC/EPOXY
encapsulated code TSSOP - TSSOP
Encapsulate equivalent code TSSOP8,.19 - TSSOP8,.19
Package shape RECTANGULAR - RECTANGULAR
Package form SMALL OUTLINE, THIN PROFILE, SHRINK PITCH - SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius) NOT SPECIFIED - NOT SPECIFIED
power supply 5 V - 5 V
Certification status Not Qualified - Not Qualified
Maximum seat height 1.1 mm - 1.1 mm
Maximum supply voltage 5.5 V - 5.5 V
Minimum supply voltage 4.5 V - 4.5 V
Nominal supply voltage 5 V - 5 V
technology CMOS - CMOS
Terminal surface Tin/Lead (Sn/Pb) - Tin/Lead (Sn/Pb)
Terminal pitch 0.65 mm - 0.65 mm
Maximum time at peak reflow temperature NOT SPECIFIED - NOT SPECIFIED
width 3 mm - 3 mm
Base Number Matches 1 - 1
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