PDF PI5A4765 Data sheet ( Hoja de datos )

Número de pieza	PI5A4765
Descripción	CSP Low Voltage Dual SPDT Audio Clickless Analog Switch
Fabricantes	Peregrine Semiconductor
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No Preview Available ! www.DataSheet4U.com ADVANCE INFORMATION - COMPANY CONFIDENTIAL PI5A4765 Low Voltage Dual SPDT Audio Clickless Analog Switch with Headphone/Mute Detection 2:1 Mux/DeMux Bus Switch Features • CMOS Technology for Bus and Analog Applications • Low On-Resistance: 0.6Ω @ 2.7V. • Wide VCC Range: 1.65V to 5.5V • Rail-to-Rail Signal Range • Control Input Overvoltage Tolerance: 5.5V min. • High Off Isolation: -50dB • Crosstalk Rejection Reduces Signal Distortion: -80dB • Break-Before-Make Switching • Extended Industrial Temperature Range: –40°C to 85°C • Packaging (Pb-free & Green available): -12-ball CSP Applications • Cell Phones • PDAs • MP3 players • Portable Instrumentation • Computer Peripherals • Speaker Headset Switching • Power Routing • Relay Replacement • Audio/Video Signal Routing • PCMCIA Cards • Modems Description Pericom Semiconductors PI5A4765 is a dual high-bandwidth, fast single-pole double throw (SPDT) CMOS switch. It can be used as an analog switch or as a low-delay bus switch. Specified over a wide operating power supply voltage, 1.65V to 5.5V, the PI5A4765 has a low On-Resistance of 0.6Ω @ 2.7V. Break-before-make switching prevents both switches being enabled simultaneously. This eliminates signal disruption during switching. The control input, INX, tolerates input drive signals up to 6.0V, independent of supply voltage. The PI5A4765 offers a headphone & mute detection function through utilization of an on-chip comparator. When the negative terminal of the comparator (COMP-) is less than the threshold (internally set to VCC/3, COMP0 (comparator output) is a logic high. A logic low on COMP0 occurs when COMP- rises above the the threshold. PI5A4765 also offers shunt switches connected to ground in order to dissipate capacitance that builds up on the unconnected NC or NO line. As a result, reduction of popping and clicking sounds is achieved when switching between audio sources. Pin Configuration / Block Diagram (top view) Pin Description Pin # Pin # CSP A1, C1 B1 A3, C3 B4 A2, C2 B2 B3 A4, C4 Note: 1. x = 1, or 2 Name NOX VCC NCX GND COMX COMP0 COMP- INX Description Data Port (Normally open) Positive Power Supply Data Port (Normally closed) Ground Common Output/Data Port Comparator Output Comparator Input Logic Control Function Table Logic Input (INX) 0 1 Note: 1. x = 1, or 2 Function NCX Connected to COMX NOX Connected to COMX NO2 C1 COM2 C2 NC2 C3 IN2 C4 VCC B1 SHUNT SWITCH COMP0 B2 -+ VCC B3 3 COMP- B4 GND MUTE VCC A1 NO1 A2 COM1 A3 NC1 A4 IN1 1 P-0.9 08/02/05 1 page www.DataSheet4U.com ADVANCE INFORMATION - COMPANY CONFIDENTIAL PI5A4765 Low Volt. Dual SPDT Analog Switch 2:1 Mux/DeMux Bus Switch (w/Comparator & Shunt Switches) Test Circuits and Timing Diagrams VN NC or NO LOGIC INPUT IN GND VCC VCC COM VOUT RL CL 50Ω 35pF CL INCLUDES FIXTURE AND STRAY CAPACITANCE. Notes: 1. Unused input (NC or NO) must be grounded. Figure 1. AC Test Circuit Logic VIH Input VIL Switch Output 0V Off 50% On VOUT 90% tON Off tOFF tr < 5ns tf < 5ns 90% Logic Input Waveforms inverted for Switches that have opposite logic * 1.5V for 3.3V Supply Figure 2. AC Waveforms VIN Logic Input NC COM NO A VOUT RL CL 50Ω 35pF Logic Input VOUT 50% tBBM 0.9 x VOUT Figure 3. Break Before Make Interval Timing 5 P-0.9 08/02/05 5 Page

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