LTC1966CMS8 datasheet, PDF - EEWORLD Datasheet

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LTC1966CMS8: DescriptionRMS TO DC CONVERTER, PDSO8; CategoryAnalog mixed-signal IC converter; File Size445KB，32 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html

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LTC1966CMS8 Overview

RMS TO DC CONVERTER, PDSO8

LTC1966CMS8 Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	incompatible
Parts packaging code	MSOP
package instruction	PLASTIC, MSOP-8
Contacts	8
Manufacturer packaging code	MS8
Reach Compliance Code	_compli
ECCN code	EAR99
Converter type	RMS TO DC CONVERTER
JESD-30 code	S-PDSO-G8
JESD-609 code	e0
length	3 mm
Maximum linear error (EL)	0.15%
Humidity sensitivity level	1
Maximum negative input voltage	-5 V
Maximum negative supply voltage	-5.5 V
Minimum negative supply voltage
Nominal negative supply voltage	-5 V
Number of functions	1
Number of terminals	8
Maximum operating temperature	70 °C
Minimum operating temperature
Package body material	PLASTIC/EPOXY
encapsulated code	TSSOP
Encapsulate equivalent code	TSSOP8,.19
Package shape	SQUARE
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	235
Maximum positive input voltage	5 V
power supply	3/5/+-5 V
Certification status	Not Qualified
Maximum seat height	1.1 mm
Maximum supply voltage	5.5 V
Minimum supply voltage	2.7 V
Nominal supply voltage	5 V
surface mount	YES
technology	CMOS
Temperature level	COMMERCIAL
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	GULL WING
Terminal pitch	0.65 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	20
width	3 mm
Base Number Matches	1

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FEATURES

LTC1966

Precision Micropower,

∆Σ

RMS-to-DC Converter

DESCRIPTIO

The LTC

1966 is a true RMS-to-DC converter that utilizes

an innovative patented

∆Σ

computational technique. The

internal delta-sigma circuitry of the LTC1966 makes it sim-

pler to use, more accurate, lower power and dramatically

more flexible than conventional log-antilog RMS-to-DC

converters.

The LTC1966 accepts single ended or differential input

signals (for EMI/RFI rejection) and supports crest factors

up to 4. Common mode input range is rail-to-rail. Differ-

ential input range is 1V

PEAK

, and offers unprecedented lin-

earity. Unlike previously available RMS-to-DC converters,

the superior linearity of the LTC1966 allows hassle-free

system calibration at any input voltage.

The LTC1966 also has a rail-to-rail output with a separate

output reference pin providing flexible level shifting. The

LTC1966 operates on a single power supply from 2.7V to

5.5V or dual supplies up to

±5.5V.

A low power shutdown

mode reduces supply current to 0.5µA.

The LTC1966 is insensitive to PC board soldering and

stresses, as well as operating temperature. The LTC1966

is packaged in the space-saving MSOP package which is

ideal for portable applications.

APPLICATIO S

True RMS Digital Multimeters and Panel Meters

True RMS AC + DC Measurements

, LTC and LT are registered trademarks of Linear Technology Corporation.

Protected under U.S. Patent Numbers 6,359,576 and 6,362,677

TYPICAL APPLICATIO

Quantum Leap in Linearity Performance

LINEARITY ERROR (V

OUT

mV DC – V

mV AC

RMS

)

0.2

LTC1966,

∆Σ

Single Supply RMS-to-DC Converter

2.7V TO 5.5V

IN1

DIFFERENTIAL

INPUT

0.1µF

OPT. AC

COUPLING

IN2

OUTPUT

LTC1966

OUT RTN

GND

AVE

1µF

1966 TA01

–0.2

–0.4

–0.6

–0.8

–1.0

60Hz SINEWAVES

50 100 150 200 250 300 350 400 450 500

(mV AC

RMS

)

1966 TA01b

CONVENTIONAL

LOG/ANTILOG

OUT

–

No-Hassle Simplicity:

True RMS-DC Conversion with Only One External

Capacitor

Delta Sigma Conversion Technology

High Accuracy:

0.1% Gain Accuracy from 50Hz to 1kHz

0.25% Total Error from 50Hz to 1kHz

High Linearity:

0.02% Linearity Allows Simple System Calibration

Low Supply Current:

155µA Typ, 170µA Max

Ultralow Shutdown Current:

0.1µA

Constant Bandwidth:

Independent of Input Voltage

800kHz –3dB, 6kHz

±1%

Flexible Supplies:

2.7V to 5.5V Single Supply

Up to

±5.5V

Dual Supply

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

sn1966 1966fas

LTC1966CMS8 Related Products

	LTC1966CMS8	LTC1966	LTC1966IMS8
Description	RMS TO DC CONVERTER, PDSO8	RMS TO DC CONVERTER, PDSO8	RMS TO DC CONVERTER, PDSO8
Maximum negative supply voltage	-5.5 V	-5.5 V	-5.5 V
Number of functions	1	1	1
Number of terminals	8	8	8
Maximum operating temperature	70 °C	70 Cel	85 °C
Minimum operating temperature	-	0.0 Cel	-40 °C
Maximum positive input voltage	5 V	5 V	5 V
surface mount	YES	Yes	YES
Temperature level	COMMERCIAL	COMMERCIAL	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	S-PDSO-G8	-	S-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
Maximum negative input voltage	-5 V	-	-5 V
Nominal negative supply voltage	-5 V	-	-5 V
Package body material	PLASTIC/EPOXY	-	PLASTIC/EPOXY
encapsulated code	TSSOP	-	TSSOP
Encapsulate equivalent code	TSSOP8,.19	-	TSSOP8,.19
Package shape	SQUARE	-	SQUARE
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	-	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	235	-	235
power supply	3/5/+-5 V	-	3/5/+-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	2.7 V	-	2.7 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	20	-	20
width	3 mm	-	3 mm

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