DataSheetWiki


LTC2946 fiches techniques PDF

Linear Technology - Charge and Energy Monitor

Numéro de référence LTC2946
Description Charge and Energy Monitor
Fabricant Linear Technology 
Logo Linear Technology 





1 Page

No Preview Available !





LTC2946 fiche technique
LTC2946
Wide Range I2C Power,
Charge and Energy Monitor
FEATURES
DESCRIPTION
n Rail-to-Rail Input Range: 0V to 100V
n Wide Input Supply Range: 2.7V to 100V
n Shunt Regulator for Supplies >100V
n Δ∑ ADC with Less Than ±0.4% Total
Unadjusted Error
n 12-Bit Resolution for Current and Voltages
n ±1% Accurate Power and Energy Measurements
n ±0.6% Accurate Current and Charge Measurements
n Additional ADC Input Monitors an External Voltage
n Internal ±5% or External Time Bases
n Continuous Scan and Snapshot Modes
n Stores Minimum and Maximum Values
n Alerts When Limits Exceeded
n Split SDA Pin Eases Opto-Isolation
n Shutdown Mode with IQ < 40µA
n Available in 4mm × 3mm DFN and 16-Lead
MSOP Packages
APPLICATIONS
n Telecom Infrastructure
n Industrial Equipment
n General Purpose Energy Measurement
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 I2C interface.
The LTC2946 I2C interface includes separate data input
and output pins for use with standard or opto-isolated I2C
connections. The LTC2946-1 has an inverted data output
for use with inverting opto-isolator configurations.
L, 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.
TYPICAL APPLICATION
Wide Range Power, Charge and Energy
Monitor with Onboard ADC and I2C
VIN
4V TO 100V
0.1µF
NINE I2C
ADDRESSES
ACCUMULATION
ENABLE
0.02Ω
TO
LOAD
SENSE+ SENSE
VDD GPIO3
INTVCC
SCL
ADR1 LTC2946 SDAI
ADR0
SDAO
GND ADIN
ALERT
I2C
INTERFACE
MEASURED
VOLTAGE
GPIO2
CLKIN
GPIO1
CLKOUT
GENERAL
PURPOSE
OUTPUT
OPTIONAL
CRYSTAL
TIMEBASE
2946 TA01a
ADC Total Unadjusted Error (ADIN)
0.10
0.05
0
–0.05
–0.10
0
1024
2048
CODE
3072
4096
2946 TA01b
For more information www.linear.com/LTC2946
2946fa
1

PagesPages 30
Télécharger [ LTC2946 ]


Fiche technique recommandé

No Description détaillée Fabricant
LTC2941 Battery Gas Gauge Linear Technology
Linear Technology
LTC2941-1 1A I2C Battery Gas Gauge Linear
Linear
LTC2942 Battery Gas Gauge Linear Technology
Linear Technology
LTC2942-1 1A Battery Gas Gauge Linear Technology
Linear Technology

US18650VTC5A

Lithium-Ion Battery

Sony
Sony
TSPC106

PCI Bus Bridge Memory Controller

ATMEL
ATMEL
TP9380

NPN SILICON RF POWER TRANSISTOR

Advanced Semiconductor
Advanced Semiconductor


www.DataSheetWiki.com    |   2020   |   Contactez-nous  |   Recherche