INA237AQDGSRQ1
Current Sense Amplifier
Inventory:5,700
- 90-day after-sales guarantee
- 365 Days Quality Guarantee
- Genuine Product Guarantee
- 7*24 hours service quarantee
-
Part Number : INA237AQDGSRQ1
-
Package/Case : VSSOP10
-
Brands : TI
-
Components Categories : Digital power monitors
-
Datesheet : INA237AQDGSRQ1 DataSheet (PDF)
Overview of INA237AQDGSRQ1
The INA237-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 INA237-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 INA237-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.
Key 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: ±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)
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
Common-mode voltage (max) (V) | 85 | Common-mode voltage (min) (V) | -0.3 |
Input offset (±) (max) (µV) | 50 | Input offset drift (±) (max) (µV/°C) | 0.02 |
Input offset drift (±) (typ) (µV/°C) | 0.002 | Voltage gain (V/V) | 1 |
CMRR (min) (dB) | 120 | Bandwidth (kHz) | 10 |
Supply voltage (max) (V) | 5.5 | Supply voltage (min) (V) | 2.7 |
Iq (max) (mA) | 1.1 | Digital interface | I2C, SMBus |
Gain error (%) | 0.3 | Gain error drift (±) (max) (ppm/°C) | 50 |
Features | Alert Function, Bi-directional, Bidirectional, Digital Temp Monitor, I2C, Integrated Power Monitor, Low-side Capable | Number of channels | 1 |
Resolution (Bits) | 16 | Power measurement accuracy (%) | 0.6 |
TI functional safety category | Functional Safety-Capable | Rating | Automotive |
Operating temperature range (°C) | -40 to 125 |
Warranty & Returns
Warranty, Returns, and Additional Information
-
QA & Return Policy
Parts Quality Guarantee: 365 days
Returns for refund: within 90 days
Returns for Exchange: within 90 days
-
Shipping and Package
Shipping:For example, FedEx, SF, UPS, or DHL.UPS, or DHL.
Parts Packaging Guarantee: Featuring 100% ESD anti-static protection, our packaging incorporates high toughness and superior buffering capabilities.
-
Payment
For example, channels like VISA, MasterCard, UnionPay, Western Union, PayPal, and more.
If you have specific payment channel preferences or requirements, please get in touch with our sales team for assistance.
Similar Product
INA233AIDGSR
10-Pin VSSOP Package
INA220AIDGST
Precision current measurement solution
INA219BID
Current & Power Monitors & Regulators 0-Drift,Bi-dir Current/Pwr Mon
INA231BIYFDR
SP Amp Current Sense Amp Single 5.5V 12-Pin DSBGA T/R
INA231AIYFDR
SP Amp Current Sense Amp Single 5.5V 12-Pin DSBGA T/R
INA3221AQRGVRQ1
Monitor 2.7V to 5.5V Automotive 16-Pin VQFN EP T/R
INA234AIYBJR
SP Amp Current Sense Amp Single 5.5V 8-Pin DSBGA T/R
INA230AIDGST
SP Amp Current Sense Amp Single 5.5V 10-Pin VSSOP T/R