Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Measurement | Unipolar high-side current sensing |
| Supply / Common Mode | 2.7 V to 60 V recommended |
| Quiescent Current | 60 µA typical |
| Output Architecture | Current output; external RL sets voltage gain |
| Transfer Core | 1 kΩ internal transconductance network |
| Bandwidth | Up to about 440 kHz depending on load |
| Package | SOT-23 (DBV), 5 pins |
| Packing | 3000-piece large tape and reel |
Product Overview
INA169NA/3K combines the 60 V high-side range of INA168 with the higher-output-current 1 kΩ transconductance architecture used by INA139. An external resistor converts output current to voltage, so the final voltage gain remains a board-level choice.
This distinction matters when comparing INA168 and INA169. Both can monitor 60 V rails, but their output-current scaling and quiescent current differ; copying RL from one family to the other changes the transfer function.
The exact /3K ordering option is the large-reel SOT-23-5 format. Electrical design should be based on the INA169 family transfer relationship, while procurement should retain the full order code.
For related devices, see HKEQGOO’s Current Sense Amplifiers category.
Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | INA169NA/3K |
| Measurement | Unipolar high-side current sensing |
| Supply / Common Mode | 2.7 V to 60 V recommended |
| Quiescent Current | 60 µA typical |
| Output Architecture | Current output; external RL sets voltage gain |
| Transfer Core | 1 kΩ internal transconductance network |
| Bandwidth | Up to about 440 kHz depending on load |
| Package | SOT-23 (DBV), 5 pins |
| Packing | 3000-piece large tape and reel |
| Manufacturer Status | Active / Production |
| Part Marking | A69 |
Functional Highlights
Same 60 V bus range does not mean the same analog transfer as INA168
INA169 uses the 1 kΩ current-output core and about 60 µA typical quiescent current. INA168 uses the 5 kΩ core and about 25 µA. This changes both gain-resistor calculations and power overhead.
External gain helps match different ADC full-scale ranges
RL can adapt one shunt/current range to different converters, but the selected value must also satisfy bandwidth and output-compliance limits.
Design Considerations
- Do not use INA168 RL values without recalculating the INA169 transfer.
- Verify the direct TI datasheet/current family information when maintaining legacy BOMs because the local PDF asset is manufacturer-direct for this order code.
- Kelvin-connect the shunt and keep high-current ground/copper resistance out of the sense path.
Product Status and Exact Order Code
Manufacturer status: Active / Production
Texas Instruments lists INA169NA/3K as Active / Production; SOT-23 (DBV), 5 pins; 3000-piece large tape and reel; −40°C to +125°C; marking A69.
Related Engineering Resources
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