LTC2946MPMS#TRPBF datasheet, PDF

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LTC2946MPMS#TRPBF: DescriptionMonitor 2.7V to 100V Automotive 16-Pin MSOP T/R; File Size437KB，42 Pages; ManufacturerADI; Websitehttps://www.analog.com

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LTC2946MPMS#TRPBF Overview

Monitor 2.7V to 100V Automotive 16-Pin MSOP T/R

LTC2946MPMS#TRPBF Parametric

Parameter Name	Attribute value
EU restricts the use of certain hazardous substances	Compliant
ECCN (US)	EAR99
Part Status	Active
HTS	8542.39.00.01
Type	Monitor
Input Voltage (V)	2.7 to 100
Minimum Operating Supply Voltage (V)	2.7
Maximum Operating Supply Voltage (V)	100
Maximum Supply Current (mA)	1.3
Minimum Operating Temperature (°C)	-55
Maximum Operating Temperature (°C)	125
Supplier Temperature Grade	Military
Packaging	Tape and Reel
Standard Package Name	MSOP
Pin Count	16
Supplier Package	MSOP
Mounting	Surface Mount
Package Height	0.86
Package Length	4.04
Package Width	3
PCB changed	16
Lead Shape	Gull-wing

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LTC2946

Wide Range I

C Power,

Charge and Energy Monitor

FEATURES

DESCRIPTION

The

LTC

2946

is a rail-to-rail system monitor that measures

current, voltage, power, charge and energy. It features an

operating range of 2.7V to 100V and includes a shunt regu-

lator for supplies above 100V. The current measurement

common mode range of 0V to 100V is independent of the

input supply. A 12-bit ADC measures load current, input

voltage and an auxiliary external voltage. Load current and

internally calculated power are integrated over an external

clock or crystal or internal oscillator time base for charge

and energy. An accurate time base allows the LTC2946

to provide measurement accuracy of better than ±0.6%

for charge and ±1% for power and energy. Minimum and

maximum values are stored and an overrange alert with

programmable thresholds minimizes the need for software

polling. Data is reported via a standard I

C interface.

The LTC2946 I

C interface includes separate data input

and output pins for use with standard or opto-isolated I

connections. The LTC2946-1 has an inverted data output

for use with inverting opto-isolator configurations.

LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and

Hot Swap is a trademark of Linear Technology Corporation. All other trademarks are the

property of their respective owners.

Rail-to-Rail Input Range: 0V to 100V

Wide Input Supply Range: 2.7V to 100V

Shunt Regulator for Supplies >100V

Δ∑ ADC with Less Than ±0.4% Total

Unadjusted Error

12-Bit Resolution for Current and Voltages

±1% Accurate Power and Energy Measurements

±0.6% Accurate Current and Charge Measurements

Additional ADC Input Monitors an External Voltage

Internal ±5% or External Time Bases

Continuous Scan and Snapshot Modes

Stores Minimum and Maximum Values

Alerts When Limits Exceeded

Split SDA Pin Eases Opto-Isolation

Shutdown Mode with I

< 40µA

Available in 4mm × 3mm DFN and 16-Lead

MSOP Packages

APPLICATIONS

Telecom Infrastructure

Industrial Equipment

General Purpose Energy Measurement

TYPICAL APPLICATION

Wide Range Power, Charge and Energy

Monitor with Onboard ADC and I

4V TO 100V

0.1µF

NINE I

ADDRESSES

ACCUMULATION

ENABLE

INTV

ADR1

ADR0

GND

GPIO2

CLKIN

LTC2946

0.02

SENSE

–

GPIO3

SCL

SDAI

SDAO

ADIN

GPIO1

CLKOUT

LOAD

ALERT

ADC TUE (%)

INTERFACE

MEASURED

VOLTAGE

GENERAL

PURPOSE

OUTPUT

0.10

ADC Total Unadjusted Error (ADIN)

0.05

–0.05

OPTIONAL

CRYSTAL

TIMEBASE

–0.10

2946 TA01a

1024

2048

CODE

3072

4096

2946 TA01b

2946fa

For more information

www.linear.com/LTC2946

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