EMIF02-MIC07F3 STMicroelectronics

EMIF02-MIC07F3 EMI filter and ESD protection Features EMI symmetrical (I/O) low-pass filter High efficiency in EMI/ESD protection Lead-free package Very thin package High reliability offered by monolithic integration Lead-free Flip-Chip package (8 bumps) High reduction of parasitic elements through integration and wafer level packaging Complies with the following standards Figure 1. Pin configuration (bump side) IEC 61000-4-2 level 4 (on external pins B1 and C1): 3 2 1 +15 kV (air discharge) +8 kV (contact discharge) MIC Acc Det A Bias IEC 61000-4-2 level 1 (on external pins): +2 kV (air discharge) Op Gnd Mic2p B +2 kV (contact discharge) Gnd Mic2n On C Applications Where EMI filtering in ESD sensitive equipment is required: Mobile phones and communication systems Computers, printers and MCU Boards Description The EMIF02-MIC07F3 chip is a highly integrated audio filter device designed to suppress EMI/RFI noise in all systems subjected to electromagnetic interference. This filter includes ESD protection circuitry, which prevents damage to the protected device when subjected to ESD surges up to 15 kV. TM: IPAD is a trademark of STMicroelectronics. September 2011 Doc ID 17052 Rev 3 1/8 www.st.com 8Characteristics EMIF02-MIC07F3 1 Characteristics Figure 2. Configuration Acc Det GND A2 GND GND Mic Bias A3 C11 C21 R11 B1 R31 R21 B3 C31 Mic2p to ASIC C32 Mic2n R22 C1 C3 R12 C22 C12 GND GND GND GND B2 and C2 are ground bumps and must be connected together Acc Det pin connection The Acc Det pin (accessory detection) is an input pin for the audio pre-amplifier chip which detects the voltage of the microphone line MIC2P in case the user presses the on-hook/off- hook button on the headset. When the user selects off-hook using the headset button, the MIC2P is shorted to MIC2N which is grounded. If your design does not support the Acc Det feature, the Acc Det pin must be left open (not connected). Table 1. Absolute ratings (limiting values) Symbol Parameter and test conditions Value Unit Pins B1 and C1, ESD discharge IEC 61000-4-2, level 4: 15 air discharge contact discharge 8 V kV PP Pins A2, A3, B3, C3, ESD discharge IEC 61000-4-2, level 1 air discharge 2 contact discharge 2 P Power dissipation at T = 25 C 60 mW D amb T Operating temperature range - 40 to + 85 C op T Storage temperature range - 55 to + 150 C stg 2/8 Doc ID 17052 Rev 3