MAX4968/MAX4968A 19-5786 Rev 2 1/12 16-Channel, Linear, High-Voltage Analog Switches General Description Features The MAX4968/MAX4968A are 16-channel, high-linearity, S Latch Free high-voltage, bidirectional SPST analog switches with SOI HVCMOS Process Technology for High 18I (typ) on-resistance. The devices are ideal for use in Performance and Robustness applications requiring high-voltage switching controlled S No Dedicated High-Voltage Supplies Required by a low-voltage control signal, such as ultrasound imag- S R Flatness Guaranteed in Entire Input Range ON ing and printers. The MAX4968A provides integrated S Low-Power Dissipation 40kI (typ) bleed resistors on each switch terminal to discharge capacitive loads. Using HVCMOS technol- S Low-Charge Injection and Voltage Spike ogy, these switches combine high-voltage bilateral MOS S 25MHz Serial Interface (+2.5V to +5V) switches and low-power CMOS logic to provide efficient S 2nd Harmonic Distortion < -45dB at 2MHz 90V control of high-voltage analog signals. Pulse The MAX4968 is pin-to-pin compatible with the MAX14802 S Low Parasitic Capacitance Guarantees High and Supertex HV2601. The MAX4968A is pin-to-pin Bandwidth compatible with the MAX14803 and Supertex HV2701. The only difference is the V positive supply voltage PP S DC to 30MHz Small-Signal Analog Bandwidth level. The MAX4968/MAX4968A require a low +10V (typ) (C = 200pF) LOAD voltage (V ), whereas the MAX14802/MAX14803 and PP S 500kHz to 20MHz High-Signal Analog Bandwidth HV2601/HV2701 require a high +100V supply voltage. (C = 200pF) LOAD In a typical ultrasound application, these devices do not S Extended Input Range Up to 210V P-P require a dedicated high-voltage supply that implies a sig- S -80dB (typ) Off-Isolation at 5MHz (50I) nificant simplification of system requirement. The negative voltage supply can be shared with the transmitter, and the S Shunt (Bleed) Resistors on Outputs (MAX4968A positive voltage supply is typically +10V. Only) The devices are available in the 48-pin LQFP package S Daisy-Chainable Serial Interface and are specified over the -40NC to +85NC extended temperature range. Applications Medical Ultrasound Imaging Nondestructive Testing (NDT)/Industrial Ultrasound Imaging Printers Ordering Information/Selector Guide PART TEMP RANGE SWITCH CHANNELS BLEED RESISTOR PIN-PACKAGE MAX4968ECM+ 16 No 48 LQFP -40C to +85C MAX4968AECM+ 16 Yes 48 LQFP -40C to +85C +Denotes a lead(Pb)-free/RoHS-compliant package. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.16-Channel, Linear, High-Voltage Analog Switches ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND.) Analog Signal Range (SW ) ........ (V - 0.3V) to (V + 220V) NN NN V Logic Supply Voltage Range ..........................-0.3V to +6V Continuous Power Dissipation (T = +70NC) DD A LQFP (derate 22.7mW/NC above +70NC) .................1818mW V - V Supply Voltage ................................................ +212V PP NN Operating Temperature Range .......................... -40NC to +85NC V Supply Voltage Range ...................................-0.3V to +12V PP Storage Temperature Range ............................ -65NC to +150NC V Negative Supply Voltage ............................................-200V NN Junction Temperature ................................................... +150NC Logic Input Voltage Range (CLK, DIN, CLR) .........-0.3V to +6V Lead Temperature (soldering, 10s) ................................+300NC Logic Input Voltage Range Soldering Temperature (reflow) ......................................+260NC (LE) ........................-0.3V to a minimum of (V + 0.3V) or 6V PP Logic Output Voltage Range (DOUT) ...... -0.3V to (V + 0.3V) DD Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. PACKAGE THERMAL CHARACTERISTICS (Note 1) LQFP Junction-to-Ambient Thermal Resistance (q ) ..........44C/W JA Junction-to-Case Thermal Resistance (q ) ...............10C/W JC Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four- layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial. ELECTRICAL CHARACTERISTICS (V = +2.37V to +5.5V, V = +10V Q5%, V = 0 to -200V, T = T to T , unless otherwise noted. Typical values are DD PP NN A MIN MAX V = +3.3V, V = -100V, V = +10V at T = +25NC.) (Note 2) DD NN PP A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS POWER SUPPLIES V Logic Supply Voltage V +2.37 +5.5 V DD DD V Supply Voltage V -200 0 V NN NN V Supply Voltage V +9.5 +10 +10.5 V PP PP V Static Current I 4 FA DD DDS V Dynamic Current I V = +5V, f = 5MHz, f = 2.5MHz 200 FA DD DD DD CLK DIN V Static Current I All switches remain on or off, SW = GND 10 25 FA NN NNS V Supply Dynamic Current NN V = +10V, V = -100V, PP NN (All Channels Switching I 3.3 5 mA NN f = 50kHz, SW = GND TURN ON/OFF Simultaneously) V Supply Static Current I All switches remain on or off, SW = GND 12 25 FA PP PPS V Supply Dynamic Current PP V = +10V, V = -100V, PP NN (All Channels Switching I 4 6 mA PP f = 50kHz, SW = GND TURN ON/OFF Simultaneously) SWITCH CHARACTERISTICS V + NN Analog Dynamic Signal Range V AC operation only, f > 500kHz V V SW NN 210 V = +10V, V = -100V, V = 0V, PP NN SW Small-Signal On-Resistance R 18 34 I ONS I = 5mA SW 2 MAX4968/MAX4968A