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ST95HF Datasheet(PDF) 53 Page - STMicroelectronics |
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ST95HF Datasheet(HTML) 53 Page - STMicroelectronics |
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53 / 93 page  DocID025630 Rev 4 53/93 ST95HF Electrical characteristics 92 6.2 DC characteristics 6.3 Power consumption characteristics TA = –25 °C to 85 °C, unless otherwise specified. The ST95HF supports two VPS_TX supply ranges for RF drivers: 2.7V to 3.3V or 4.5V to 5.5V. Antenna matching circuit must be defined accordingly. Table 45. DC characteristics Symbol Parameter Condition Min. Typ. Max. Unit VPS_Main Supply voltage - 2.7 3.0 5.5 V VPS_TX Supply voltage (RF drivers) - 2.7 3.0 5.5 V VIL Input low voltage (I/Os) - 0 - 0.2 x VPS_Main V VIH Input high voltage (I/Os) - 0.7 x VPS_Main - VPS_Main V VOH Output high voltage (I/Os) IOH = - 8 µA 0.7 x VPS_Main - VPS_Main V VOL Output low voltage (I/Os) IOLMAX = 500 µA 0 - 0.15 x VPS_Main V POR Power-on reset voltage - - 1.8 - V Table 46. Power consumption characteristics (VPS_Main from 2.7 to 3.3 V) Symbol Parameter Condition Typ. Max. Unit ICC (VPS) Power-up Supply current in power-up state TA = 25°C 200 600 µA ICC (VPS) Card Emulation Supply current in Card Emulation mode TA = 25 °C 2.5 5.0 mA ICC (VPS) Hibernate Supply current in Hibernate state TA = 25 °C 1 5 µA ICC (VPS) Sleep/Field Detector Supply current in Sleep/Field Detector state TA = 25 °C 20/25 80 µA ICC (VPS) Ready Supply current in Ready state TA = 25 °C 2.5 5.0 mA ICC (VPS) Tag Detect Average supply current in Tag Detector state TA = 25 °C, 4 RF bursts per second 50 100 µA Table 47. Power consumption characteristics (VPS_TX from 2.7 to 3.3 V) Symbol Parameter Condition Typ. Max. Unit ICC RF (VPS_TX) RF Field ON Supply current in RF Field (Reader mode) (1) TA = 25 °C 70 100 mA ICC RF (VPS_TX) RF Field OFF Supply current in RF Field (Ready mode) (2) TA = 25 °C - 200 µA ICC RF (VPS_TX) Tag Detect Peak(3) current during Burst detection TA = 25 °C 70 100 mA 1. Parameter measured using recommended output matching network (Z load is 27 Ω and 0°). |
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