Leshan Radio Co ., Ltd Low Voltage 0.4Ω Quad SPDT Analog Switch LR1554 Description Features z Wide Power Supply Range:1.6V to 4.2V z Low On-Resistance: 0.4Ω (VDD=2.7V) z Low On-Resistance Flatness z -3dB BandWidth: 42 MHz z Fast Switching Speed(VDD=3.3V): The LR1554 is a quad single-pole double-throw (SPDT) CMOS switch featuring an On-Resistance of 0.4 ohm at VDD=2.7V and wide power supply range from 1.6V to 4.2V. It can be used as an analog switch or low-delay bus switch. tON: 20ns Block Diagram tOFF: 10ns z IDD = 300nA @ TA = +25°C z High Off Isolation: -65dB z Crosstalk Rejection: -65dB z Lead(Pb) Free QFN-16 Package(3mmx3mm) Applications z Wireless Handsets z Portable electronic devices z PDAs z Audio & Video Switching z PCMCIA Cards z Computer Peripherals z Modems Pin Configuration COM1 16 Function Table NO1 VDD NC4 15 14 13 1 A0 12 A1 LR 1554 SSSSS 2 3 10 9 NC2 6 7 GND NO3 Top View Function 0 NC1(NC2) connect to COM1 (COM2) 1 NO1(NO2) connect to COM1 (COM2) 0 NC3(NC4) connect to COM3 (COM4) 1 NO3(NO4) connect to COM3 (COM4) 11 4 5 In 8 COM3 Pin Description Pin Name Type Description VDD PWR Power Supply GND Ground Ground COMx Input/Output Data Port NCx Input/Output Data Port NOx Input/Output Data Port Ay Input Logic Control Signal x = 1, 2, 3 or 4; y = 0 or 1 1/6 Leshan Radio Co ., Ltd ABSOLUTE MAXIMUM RATINGS Parameter Symbol Min Max Units DC Supply Voltage VDD 1.5 4.6 V Signals on NC VNCX -0.5 VSUP + 0.3 V Signals on NO VNOX -0.5 VSUP + 0.3 V Signals On COM VCOM -0.5 VSUP + 0.3 V Peak Current(1)（VNC+VNO） IPEAK -500 +500 mA Notes: (1): Pulsed at 1ms, 10% duty circle ELECTRICAL CHARACTERISTICS Parameter Symbol Conditions VDD Guaranteed Limit Min. Typ.(1) Max. Unit DC ELECTRICAL CHARACTERISTICS (Analog Section) (2) Input Signal Range VAN On Resistance(2) RON (2, 3) On Resistance Flatness On Resistance Match Between Channels (2, 4) NC or NO Off Leakage Current COM On Leakage Current RFLAT △RON INC(OFF) or INO(OFF) ICOM(ON) 0 VDD 4.0 0.4 0.6 2.7 0.4 0.6 ICOM =100mA ; VIN = 0.8V to 4.0 0.08 0.12 2.0V 2.7 0.08 0.12 4.0 0.08 0.09 2.7 0.08 0.09 ICOM =100mA ; VIN = 1.5V ICOM =100mA ; VIN = 1.5V 4.2 -500 500 3.6 -400 400 4.2 -500 500 3.6 -400 400 Minimum High Level Input 4.2 1.6 Voltage 3.3 1.3 Maximum Low Level Input 4.2 0.7 Voltage 3.3 0.5 VNO or VNC = 0.3V, 3.3V VCOMX = 0.3V, 3.3V V Ω Ω Ω nA nA DC ELECTRICAL CHARACTERISTICS (Digital Section) Input High Voltage VIH Input Low Voltage VIL Input Current (High Level) IAH VA = 1.4V，Others = 0.5V Input Current (Low Level) IAL VA = 0.5V，Others = 1.4V V 4.2 -1 1 3.3 -1 1 4.2 -1 1 3.3 -1 1 V uA uA Note: (1). Typical characteristics are at 25°C (2). Guaranteed by design. Resistance measurement do not include test circuit or package resistance (3). Flatness is defined as the difference between the maximum and minimum value of on resistance as measured over the specified analog signal ranges. (4). △RON= RON(MAX) - RON(MIN) between channels 2/6 Leshan Radio Co ., Ltd ELECTRICAL CHARACTERISTICS Parameter Symbol Conditions VDD Guaranteed Limit Min. Typ. (1) Max. Unit AC ELECTRICAL CHARACTERISTICS 4.2 20 25 3.3 20 25 4.2 10 15 3.3 10 15 4.2 13 16 3.3 13 16 4.2 50 3.3 50 4.2 135 3.3 135 VIN Centered Between VDD and 4.2 42 GND 3.3 42 4.2 100 3.3 100 4.2 -65 3.3 -65 4.2 -65 3.3 -65 Turn On Time tON VCOM = 2V; RL = 50Ω; CL = 35pF Turn Off Time tOFF VCOM = 2V; RL = 50Ω; CL = 35pF Break Before Make Time tBBM VIN = 1.5V; RL = 50Ω; CL = 35pF NC/NO OFF Capacitance NC/NO ON Capacitance CNC(OFF) or CNO(OFF) CNC(ON) or CNO(ON) f = 1MHz , f = 1MHz , ns ns ns pF pF ADDITIONAL APPLICATION CHARACTERISTICS 3dB Bandwidth f3dB Charge Injection Select Q VGEN = 0V; RGEN = 0Ω; CL = 1nF VISO f = 100kHz; RL = 50Ω VCT f = 100kHz; RL = 50Ω (2) Input to Common I/O Off Isolation (3) Cross Talk Between Two Switches (4) MHz pC dB dB Supply Power Supply Range VDD Maximum Quiescent Supply Current IDD 1.5 VA = VDD or GND 4.2 4.4 V 1.5 uA Note: (1). Typical characteristics are at 25°C (2). Guaranteed by design. (3). Off Channel Isolation = 20log10 [(VNO\NC)/VCOM] (4). Between any two switches THERMAL INFORMATION Continuous Power Dissipation 16-pin QFN (derate 7.1mW/ºC above +70ºC)... ..................... ..................... ..............................0.5W Storage Temperature ............................ ..................... ..................... ................................–65ºC to +150ºC Operating Temperature Range ........ ..................... ..................... ......................................–40ºC to +85ºC 3/6 Leshan Radio Co ., Ltd TEST SETUP CIRCUITS Fig.1 AC Test Circuit & Waveforms Fig.2 Break Before Make Time (tBBM) Fig.3 Charge Injection Select Input to Common I/O (Q) 4/6 Leshan Radio Co ., Ltd TEST SETUP CIRCUITS Fig.4 Off Isolation (VISO) Fig.6 Channel Off Capacitance(CNX(OFF)) Fig.5 Cross Talk (VCT) Fig.7 Channel On Capacitance(CNX(ON)) Fig.8 -3dB Bandwidth (f3dB) 5/6 Leshan Radio Co ., Ltd PACKAGE OUTLINE DIMENSIONS 16L QFN 3X3 mm A1 A3 A D A1 E PIN 1 DOT BY MARKING SIDE VIEW TOP VIEW D2 PIN #1 IDENTIFICATION CHAMFER COMMON DIMENSIONS (MM) e b BOTTOM VIEW L E2 PKG. W: VERY VERY THIN REF. MIN. NOM. MAX. A 0.70 0.75 0.80 A1 0.00 0.2 REF. 0.05 D 2.95 3.00 3.05 E 2.95 3.00 3.05 b 0.18 0.25 0.30 L 0.30 0.40 0.50 D2 1.55 1.70 1.80 E2 1.55 1.70 0.5 BSC 1.80 A3 e 6/6