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INA237AIDGSR TI Chips INA237 85-V 16-Bit Precision Power Monitor

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INA237AIDGSR TI Chips INA237 85-V 16-Bit Precision Power Monitor

Brand Name:	TI Chips
Model Number:	INA237AIDGSR
MOQ:	2500
Packaging Details:	2500PCS/reel
Payment Terms:	T/T

Detail Information

Product Description

Detail Information

Place of Origin:

China

Document:

Model:

INA237AIDGSR

Product Name:

TI Chips

Type:

SMD/SMT

Encapsulation:

Common-mode Voltage:

- 300 MV To 85 V

Operating Power Supply Current:

640 UA

Supply Ability:

1000000

Highlight:

INA237AIDGSR

INA237AIDGSR TI Chips

85V Power Monitor

Product Description

TI Chips INA237AIDGSR INA237 85-V, 16-Bit, Precision Power Monitor

Features

• High-resolution, 16-bit delta-sigma ADC

• Current monitoring accuracy:

– Offset voltage: ±50 µV (maximum)

– Offset drift: ±0.02 µV/°C (maximum)

– Gain error: ±0.3% (maximum)

– Gain error drift: ±50 ppm/°C (maximum)

– Common mode rejection: 120 dB (minimum)

• Power monitoring accuracy:

– 1.6% full scale, –40°C to +125°C (maximum)

• Fast alert response: 75 μs

• Wide common-mode range: –0.3 V to +85 V

• Bus voltage sense input: 0 V to 85 V

• Shunt full-scale differential range:

±163.84 mV / ±40.96 mV

• Input bias current: 2.5 nA (maximum)

• Temperature sensor: ±1°C (maximum at 25°C)

• Programmable conversion time and averaging

• 2.94-MHz high-speed I2C interface with 16 pin-

selectable addresses

• Operates from a 2.7-V to 5.5-V supply:

– Operational current: 640 µA (typical)

– Shutdown current: 5 µA (maximum)

Applications

• DC/DC converters and power inverters

• Industrial battery packs

• Power-over-ethernet (PoE)

• Telecom equipment

• Enterprise servers

Description

The INA237 is an ultra-precise digital power monitor

with a 16-bit delta-sigma ADC specifically designed

for current-sensing applications. The device can

measure a full-scale differential input of ±163.84 mV

or ±40.96 mV across a resistive shunt sense element

with common-mode voltage support from –0.3 V to

+85 V.

The INA237 reports current, bus voltage, temperature,

and power, all while performing the needed

calculations in the background. The integrated

temperature sensor is ±1°C accurate for die

temperature measurement and is useful in monitoring

the system ambient temperature.

The low offset and gain drift design of the INA237

allows the device to be used in precise systems

that do not undergo multi-temperature calibration

during manufacturing. Further, the very low offset

voltage and noise allow for use in A to kA sensing

applications and provide a wide dynamic range

without significant power dissipation losses on the

sensing shunt element. The low input bias current

of the device permits the use of larger current-

sense resistors, thus providing accurate current

measurements in the micro-amp range.

The device allows for selectable ADC conversion

times from 50 µs to 4.12 ms as well as sample

averaging from 1x to 1024x, which further helps

reduce the noise of the measured data.

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products details

INA237AIDGSR TI Chips INA237 85-V 16-Bit Precision Power Monitor

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