Si8511-C-IS Silicon Laboratories Inc, Si8511-C-IS Datasheet - Page 17

• Manufacturer Part Number: Si8511-C-IS
• Description: Board Mount Current Sensors 5A DUAL OUTPUT 5kV
• Manufacturer: Silicon Laboratories Inc
• Type: AC Current Sensorr
• Series: -r

Specifications of Si8511-C-IS

• Current Rating: 5 A
• Supply Voltage: 2.7 V to 5.5 V
• Frequency Range: 50 KHz to 1 MHz
• Operating Temperature: - 40 C to + 125 C
• Accuracy: 5 %
• Current - Sensing: 5A
• Sensitivity: 392mV/A
• Current - Supply: 4mA
• Sensor Type: Closed Loop
• Voltage - Supply: 2.7 V ~ 5.5 V
• Output: Configurable
• Frequency: 50kHz ~ 1MHz
• Response Time: -
• Polarization: Unidirectional
• Package / Case: 20-SOIC (0.295", 7.50mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

As explained in Section “2.3. Integrator Reset and Current Measurement”, the signals applied to R1–R4 can
control integrator reset in real time (Option 1), or they can trigger a reset event of programmable duration (Option
2). Referring to Figure 13, reset timing is exclusively a function of the signals applied to R1–R4 when TRST is tied
to VDD.
If not connected to VDD, the reset timer is enabled, and TRST must be connected through a resistor to ground to
set the reset duration (t
pulse whenever the reset logic output transitions from low to high.
output voltage > VDD
Required if driver
CONTROLLER
SYSTEM
Internal
Driver
R2
R3
R4
R1
External
Logic level gate
control signals
Driver
(to Rn inputs)
Logic level gate
control signals
(to Rn inputs)
R
). Note that the reset timer is retriggerable and generates a timed integrator discharge
Figure 13. Si851x Integrator Reset Logic
Preliminary Rev. 0.21
MODE = 1
MODE = 1
MODE = 0
R4 = 1
R4 = 0
Output 1
Output 2
Output 3
CLK
Reset timing determined
RESET
TIMER
only by inputs R1–R4.
TRST = VDD
PGM
OUT
1
INTEGRATOR
0
+
R1–R4. Reset time (t
by value of resistor R
Reset triggered by inputs
VREF
TRST
TRST = R1 to GND
Si85xx
R
TRST
) set
.
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