KTH3101
Manufacturer: CONNTEK
The KTH3101 sits at the low-sensitivity end of the CONNTEK KTH31XX ratiometric linear Hall family. Its 1.00 mV/Gs at 3.3 V keeps a ±1400 Gs field inside the output swing, which suits designs where the magnet sits close to the package and the field is strong. Typical work is busbar and motor-phase current sensing and coarse linear travel, where a wide measurement span matters more than fine resolution.
Overview
Key features
- Lowest gain in the family — ±1400 Gs span for strong fields
- Ratiometric analog output, quiescent at VDD / 2
- 30 kHz bandwidth covers motor phase current sensing
- 3.0 – 5.5 V supply, −40 to +125 °C operating range
- SOT-23, TO-92S and DFN1616 package options
- Drop-in option against Allegro A1308, functional against TI DRV5055
Typical applications
- Contactless current sensing in busbars and motor phases
- Coarse linear position and travel measurement
- Magnetic field strength measurement
- Over-current detection in power conversion
Specifications
Magnetic performance
| Sensitivity @ 3.3 V | 1.00 mV/Gs typ (0.93 – 1.07) |
|---|---|
| Sensitivity @ 5 V | 1.50 mV/Gs typ (1.40 – 1.61) |
| Magnetic range @ 3.3 V | ±1400 Gs |
| Magnetic range @ 5 V | ±1500 Gs |
| Output noise @ 3.3 V | 2.4 mVrms typ |
| Sensitivity drift | 0.1 %/°C typ |
| Linearity error | ±1.5 % |
Electrical
| Supply voltage | 3.0 – 5.5 V |
|---|---|
| Quiescent output | VDD / 2 (1.65 V at 3.3 V, 2.50 V at 5 V) |
| Output linear range | 0.25 V to VDD − 0.25 V |
| Supply current | 4.5 mA typ @ 3.3 V, 5.4 mA typ @ 5 V |
| Bandwidth | 30 kHz (−3 dB) |
| Power-on time | 20 µs typ |
| Load capacitance | ≤ 10 nF |
Package and temperature
| Packages | SOT-23, TO-92S, DFN1616 |
|---|---|
| Pins | VDD / OUT / GND |
| Operating temperature | -40 – +125 °C |
Family sensitivity options
| KTH3101 | 1.00 mV/Gs @ 3.3 V · ±1400 Gs |
|---|---|
| KTH3102 | 1.65 mV/Gs @ 3.3 V · ±840 Gs |
| KTH3103 | 2.25 mV/Gs @ 3.3 V · ±620 Gs |
| KTH3105 | 3.30 mV/Gs @ 3.3 V · ±420 Gs |
| KTH3110 | 6.60 mV/Gs @ 3.3 V · ±210 Gs |
| KTH3113 | 8.90 mV/Gs @ 3.3 V · ±150 Gs |
Note on parameters. The figures above are taken from the manufacturer datasheet for KTH3101. Electrical limits vary by ordering option and revision — confirm the current datasheet before finalising your design.
Package and ordering
| Ordering code | Package | Operating temp. / grade |
|---|---|---|
| KTH3101 | SOT-23 / TO-92S / DFN1616 | -40 to +125 °C |
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Sourcing KTH3101
We supply KTH3101 with original manufacturer documentation and a quotation that states lead time, packaging and price breaks. Send your annual quantity and target date and you will get a reply with the datasheet attached.