Packaging information
| Package | Pins TSSOP (PW) | 20 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 70 | TUBE |
Features for the INA253
- Precision Integrated Shunt
Resistor
- Shunt Resistor: 2 mΩ
- Shunt Inductance: 3 nH
- Shunt Resistor Tolerance: 0.1% (Max)
- ±15 A Continuous from –40°C to +85°C
- 0°C to 125°C Temperature Coefficient:
10 ppm/°C
- High Bandwidth: 350 kHz
- Enhanced PWM rejection
- Excellent
CMRR
- > 120-dB DC CMRR
- 90-dB AC CMRR at 50 kHz
- Accuracy:
- Gain:
- Gain Error: 0.4% (Max)
- Gain Drift: 45 ppm/°C (Max)
- Offset:
- Offset Current: ±15 mA (Max)
- Offset Drift: 125 µA/°C (Max)
- Gain:
- Wide Common-Mode Range: –4 V to +80 V
- Available Gains: 100 mV/A, 200 mV/A,
and 400 mV/A - Quiescent Current: 2.4 mA (Max)
Description for the INA253
The INA253 is a voltage-output, current sense amplifier with an integrated shunt resistor
of 2 mΩ. The INA253 is designed to monitor bidirectional currents over a wide common-mode range
from
–4 V to +80 V, independent of the supply voltage. Three fixed gains are available: 100 mV/A,
200 mV/A, and 400 mV/A. The integration of the precision resistor with a zero-drift chopped
amplifier provides calibration equivalent measurement accuracy, ultra-low temperature drift
performance of 15 ppm/°C, and an optimized Kelvin layout for the sensing resistor.
The INA253 is designed with enhanced PWM rejection circuitry to suppress large (dv/dt) signals that enable real-time continuous current measurements. The measurements are critical for in-line current measurements in a motor-drive application, and for solenoid valve control applications.
This device operates from a single 2.7-V to 5.5-V power supply, drawing a maximum of 3 mA of supply current. All gain versions are specified over the extended operating temperature range (–40°C to +125°C), and are available in a 20-pin TSSOP package.