詳細信息
Features
??8??6 Ratiometric rail-to-rail output
??8??6 Programmability at end-of-line
??8??6 Wide sensitivity range
- +3mV/Gs to +16mV/Gs
- -16mV/Gs to -3mV/Gs
??8??6 T emperature-stable quiescent voltage output
and sensitivity
??8??6 Output voltage and sensitivity are independent
with VDD over the range of 4.5V—5.5V
??8??6 Wide ambient temperature range: -40°C to 125°C
??8??6 Fast power-on time
??8??6 Resistant to mechanical stress
??8??6 Precise recoverability after temperature cycling
??8??6 TO94 package is available
Applications
??8??6 Angular position
??8??6 AC/DC current sensing
??8??6 Over current detection circuit
??8??6 BLDC motor current monitoring
??8??6 Current sensor for solar energy will flow box
??8??6 Damper controls Description
The SC4616 family of programmable linear Hall Effect sensor ICs is designed specifically for angular position, and AC/DC current measurement etc. The accuracy of these devices is enhanced via programmability on the output pin for end-of-line optimization without the added complexity and cost of a fully programmable device.
These ratiometric Hall effect devices provide a voltage output that is proportional to the applied magnetic field. Both the quiescent voltage output and magnetic sensitivity are user adjustable. The quiescent voltage output can be set to 2.5V or 0.5V, and the sensitivity adjusted between 3 mV/Gs and 16 mV/Gs. Programming selections also exist for output polarity and temperature compensation.
Each Bi-CMOS monolithic circuit integrates a Hall element, temperature-compensating circuitry to reduce the intrinsic sensitivity drift of the Hall element, a small-signal high-gain amplifier, a low-impedance output stage, a proprietary dynamic offset cancellation technique and trimming unit.
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
ELECTRICAL CHARACTERISTICS
Supply Voltage
VDD
Operating voltage
4.5 5 5.5
V
Supply Current
IDD
No load on OUT and VREF
8 10 14
mA
Power-On Delay
TPOD
TA=25°C, OUT to 2.5V @ Sens=4.0mV/Gs
25
μS
Internal Bandwidth
BW
Output signal -3dB
20
kHz
Output Load Resistance
RL
OUT to VDD
4
kΩ??0??7
OUT to GND
4
OUTPUT CHARACTEEERISTICS
Output Load Capacitance
CL
OUT to GND
-- 100 --
nF
Output Voltage Range
VOUTH
TA=25°C, B=1000Gs
4.8 4.9 5
V
@ Sens=4.0mV/Gs
VOUTL
TA=25°C, B=-1000Gs
0 0.1 0.2
V
@ Sens=4.0mV/Gs
Step Response Time
Tresp
Delay the output signal reaching 90%
-- 25 --
μS