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INA238AQDGSRQ1
The INA238AQDGSRQ1 is an AEC-Q100 compliant current and power monitor with a high precision 16-bit output for monitoring current, voltage, and charge
Brands: Texas Instruments
Mfr.Part #: INA238AQDGSRQ1
Datasheet: INA238AQDGSRQ1 Datasheet (PDF)
Package/Case: VSSOP (DGS)-10
RoHS Status:
Stock Condition: 6814 pcs, New Original
Warranty: 1 Year Ovaga Warranty - Find Out More
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Add To BomINA238AQDGSRQ1 General Description
The INA238-Q1 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 INA238-Q1 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 INA238-Q1 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.
Features
- AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
- Functional Safety-Capable
- Documentation available to aid functional safety system design
- High-resolution, 16-bit delta-sigma ADC
- Current monitoring accuracy:
- Offset voltage: ±5 µV (maximum)
- Offset drift: ±0.02 µV/°C (maximum)
- Gain error: ±0.1% (maximum)
- Gain error drift: ±25 ppm/°C (maximum)
- Common mode rejection: 140 dB (minimum)
- Power monitoring accuracy:
- 0.7% 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)
Application
Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Common-mode voltage (max) (V) | 85 | Common-mode voltage (min) (V) | -0.3 |
| Input offset (±) (max) (µV) | 5 | Input offset drift (±) (max) (µV/°C) | 0.02 |
| Input offset drift (±) (typ) (µV/°C) | 0.002 | Voltage gain (V/V) | 1 |
| CMRR (min) (dB) | 140 | Supply voltage (max) (V) | 5.5 |
| Supply voltage (min) (V) | 2.7 | Iq (max) (mA) | 1.1 |
| Digital interface | I2C, SMBus | Gain error (%) | 0.1 |
| Gain error drift (±) (max) (ppm/°C) | 25 | Features | Alert Function, Bi-directional, Bidirectional, Digital Temp Monitor, High precision, I2C, Integrated Power Monitor, Low-side Capable |
| Number of channels | 1 | Resolution (Bits) | 16 |
| Power measurement accuracy (%) | 0.2 | TI functional safety category | Functional Safety-Capable |
| Rating | Automotive |
Shipping
| Shipping Type | Ship Fee | Lead Time | |
|---|---|---|---|
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DHL | $20.00-$40.00 (0.50 KG) | 2-5 days |
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Fedex | $20.00-$40.00 (0.50 KG) | 2-5 days |
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UPS | $20.00-$40.00 (0.50 KG) | 2-5 days |
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TNT | $20.00-$40.00 (0.50 KG) | 2-5 days |
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EMS | $20.00-$40.00 (0.50 KG) | 2-5 days |
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REGISTERED AIR MAIL | $20.00-$40.00 (0.50 KG) | 2-5 days |
Processing Time：Shipping fee depend on different zone and country.
Payment
| Terms of payment | Hand Fee | |
|---|---|---|
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Wire Transfer | charge US$30.00 banking fee. |
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Paypal | charge 4.0% service fee. |
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Credit Card | charge 3.5% service fee. |
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Western Union | charge US.00 banking fee. |
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Money Gram | charge US$0.00 banking fee. |
Guarantees
1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.
2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.
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All the products will packing in anti-staticbag. Ship with ESD antistatic protection.
Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.
We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.
After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.
We provide high quality products, thoughtful service and after sale guarantee
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365 days quality guarantee for all products
