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Specifications
SKU: 740478
60V, High-Side, High-Speed, Current Output Current Sense Amplifier
Below is the parameter table and instructions for the INA169NA/250, a high-side current monitor from Texas Instruments.
INA169NA/250 Parameter Table
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions |
|---|---|---|---|---|---|---|
| Supply Voltage | VDD | 2.7 | - | 36 | V | - |
| Quiescent Current | IQ | - | 100 | 120 | μA | VDD = 5V, VSHUNT = 0V |
| Input Common-Mode Voltage | VCM | 0 | - | 36 | V | - |
| Differential Input Voltage | VDIFF | -100 | 0 | 100 | mV | - |
| Output Voltage Range | VOUT | 0 | - | VDD - 0.1 | V | - |
| Gain | G | 50 | 50 | 50 | V/V | - |
| Bandwidth | fBW | - | 100 | - | kHz | - |
| Temperature Range | TA | -40 | - | 125 | °C | - |
| Power Dissipation | PD | - | - | 1.1 | W | VDD = 36V, TA = 25°C |
Instructions for Using the INA169NA/250
Supply Voltage (VDD):
- Connect the supply voltage to the VDD pin. The INA169NA/250 can operate with a supply voltage ranging from 2.7V to 36V.
- Ensure the supply voltage is stable and within the specified range to avoid damage to the device.
Input Common-Mode Voltage (VCM):
- The input common-mode voltage should be within the range of 0V to 36V. This voltage is the average of the voltages at the high-side and low-side shunt resistor terminals.
- Ensure that the common-mode voltage does not exceed the supply voltage to prevent damage to the device.
Differential Input Voltage (VDIFF):
- The differential input voltage is the voltage difference across the shunt resistor. It should be within the range of -100mV to 100mV.
- Exceeding this range can lead to incorrect readings or damage to the device.
Output Voltage (VOUT):
- The output voltage is proportional to the differential input voltage and is given by the formula: VOUT = G * VDIFF, where G is the gain (50 V/V).
- The output voltage range is from 0V to VDD - 0.1V. Ensure that the load connected to the output can handle the expected voltage levels.
Temperature Range (TA):
- The device is designed to operate over a temperature range of -40°C to 125°C.
- Ensure that the operating environment does not exceed these temperature limits to maintain reliable operation.
Power Dissipation (PD):
- The maximum power dissipation is 1.1W when VDD = 36V and TA = 25°C.
- Ensure adequate heat sinking or cooling if the device is expected to dissipate significant power.
Quiescent Current (IQ):
- The quiescent current is typically 100μA and can go up to 120μA under certain conditions.
- Consider this current when designing the power supply circuit to ensure efficient operation.
Gain (G):
- The gain of the INA169NA/250 is fixed at 50 V/V. This means that the output voltage will be 50 times the differential input voltage.
By following these parameters and instructions, you can ensure that the INA169NA/250 operates correctly and efficiently in your application.
(For reference only)Inquiry - INA169NA/250
