Power States And Current Consumption Breakdown - Elatec TWN4 USB Front Reader Technical Handbook

4 Power states and current consumption breakdown

4 Power states and current consumption
breakdown
The first section of Table 4.1 shows the expected typical current draw. The second section of the table lists
the maximum additional current drawn by the device's peripherals; these values are to be added to those
in the "Normal Idle" base state. It is assumed that a +5V DC Power Source is used.
Normal Idle
Maximum Consumption by Function wrt. Normal Idle System State
SearchTag-HF
SearchTag-LF
BLE Active Packet Reception
BLE Active Transmission (0 dBm output power)
BLE Active Transmission (8 dBm output power)
Speaker Constant Tone
LED (Red)
LED (Green)
Front USB port (w/o current of connected device)
Table 4.1: Current Consumption Breakdown given +5V DC Supply (mA)
Typical Consumption in Base System States
135
+140
+25
+9
+9
+24
+80
+2
+6
+10
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