Supertex inc. HV238 16-Channel High Voltage Analog Switch With Bleed Resistors Features ►► ►► ►► ►► ►► ►► ►► ►► ►► ►► HVCMOS® technology for high performance 220V operating conditions Output on-resistance typically 22Ω Integrated bleed resistors on the outputs 5.0 and 12.0V CMOS logic compatibility Very low quiescent power dissipation (-10µA) -45dB min off isolation at 7.5MHz Low parasitic capacitance Excellent noise immunity Flexible operating supply voltages Applications ►► Medical ultrasound imaging ►► Non-destructive evaluation General Description The Supertex HV238 is a 220V, 16-channel, high voltage analog switch integrated circuit (IC) with output bleed resistors (RINT). The output switches are configured as 2 sets of 8 single pole single throw analog switches. It is intended to be used in applications requiring high voltage switching controlled by low voltage control signals such as ultrasound imaging. The 2 sets of 8 analog switches are controlled by 2 input logic controls, DIN1 and DIN2. A logic high on DIN1 will turn on switches 0 to 7 and a logic high on DIN2 will turn on switches 8 to 15. The bleed resistors help to significantly reduce voltage built up on capacitive loads such as piezoelectric transducers connected to the outputs. Block Diagram VDD DIN1 SW0 Latch 1 Level Translator 1 SW0 SW7 SW7 VDD SW8 DIN2 LE GND VPP Latch 2 Level Translator 2 SW8 SW15 VNN SW15 RGND Doc.# DSFP-HV238 B070813 Supertex inc. www.supertex.com HV238 Pin Configuration Ordering Information Part Number Package Option HV238FG-G HV238FG-G M931 Packing 1 48 250/Tray 48-Lead LQFP 1000/Reel -G denotes a lead (Pb)-free / RoHS compliant package Absolute Maximum Ratings Parameter Value VDD logic power supply voltage VPP - VNN supply voltage VPP positive high voltage supply 48-Lead LQFP -0.5V to +15V (top view) 225V Product Marking -0.5V to VNN +225V VNN negative high voltage supply Top Marking +0.5V to -225V Logic input voltages -0.5V to VDD +0.3V Analog signal range VNN to VPP Peak analog signal current/channel Storage temperature Y Y WW H V2 3 8 F G LLLLLLLLL 3.0A Bottom Marking -65OC to +150OC Power dissipation CCCCCCCC AAA 1.0W Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied. Continuous operation of the device at the absolute rating level may affect device reliability. All voltages are referenced to device ground. YY = Year Sealed WW = Week Sealed L = Lot Number C = Country of Origin* A = Assembler ID* = “Green” Packaging *May be part of top marking Package may or may not include the following marks: Si or 48-Lead LQFP Typical Thermal Resistance Package θja 48-Lead LQFP 52OC/W Operating Conditions Sym Parameter Value VDD Logic power supply voltage 4.75V to 12.6V VPP Positive high voltage supply 50V to 110V VNN Negative high voltage supply VIH High level input voltage VDD -1.0V to VDD VIL Low-level input voltage 0V to 1.0V VSIG Analog signal voltage peak-to-peak TA -10V to VPP -220V VNN +10V to VPP -10V Operating free air temperature 0OC to 70OC Notes: 1. Power up/down sequence is arbtrary except GND must be powered -up first and powered-down last. 2. VSIG must be VNN ≤ VSIG ≤ VPP or floating during power up/down transition. 3. Rise and fall times of power supplies VDD, VPP, and VNN should not be less than 1.0msec. Doc.# DSFP-HV238 B070813 2 Supertex inc. www.supertex.com HV238 DC Electrical Characteristics (Over operating conditions unless otherwise specified ) Sym RONS Parameter Small signal switch on-resistance 0OC +25OC +70OC Units Conditions Min Max Min Typ Max Min Max - 30 - 26 32 - 40 VSIG = 0V, ISIG = 5.0mA VSIG = 0V, ISIG = 200mA - 25 - 22 27 - 35 - 25 - 22 27 - 30 VSIG = 0V, ISIG = 5.0mA VSIG = 0V, ISIG = 200mA Ω VPP = +50V VNN = -170V VPP = +110V VNN = -110V - 20 - 18 22 - 25 Small signal switch on-resistance matching - 20 - 5.0 20 - 20 % VSIG = 0V, ISIG = 5.0mA, VPP = +110V, VNN = -110V RONL Large signal switch on-resistance - - - 15 - - - Ω VSIG = 0V, ISIG = 1.0A RINT Output switch shunt resistance - - 20 35 50 - - KΩ Output switch to RGND, IRINT = 0.5mA ISOL Switch off leakage per switch - 5.0 - 1.0 10 - 15 μA VSIG = VPP -10V, VNN = +10V DC offset switch off - 300 - 100 300 - 300 DC offset switch on - 500 - 100 500 - 500 mV No Load IPPQ Quiescent VPP supply current - - - 10 50 - - INNQ Quiescent VNN supply current - - - -10 -50 - - μA All switches off IPPQ Quiescent VPP supply current - - - 10 50 - - INNQ Quiescent VNN supply current - - - -10 -50 - - μA All switches on, ISW = 5.0mA ISW Switch output peak current - 3.0 - 3.0 2.0 - 2.0 A VSIG duty cycly < 0.1% fSW Output switching frequency - - - - 50 - - kHz Duty cycle = 50% IPP Average VPP supply current - 6.5 - - 8.8 - 10 INN Average VNN supply current - 8.1 - - -8.8 - -10 mA VPP = +50V, VNN = -170V All output switches are turning on and off at 50kHz IPP Average VPP supply current - -8.1 - - 6.3 - 6.9 INN Average VNN supply current - 5.0 - - -6.3 - -6.9 mA VPP = +110V, VNN = -110V All output switches are turning on and off at 50kHz IDDQ Logic supply quiescent current - 10 - - 10 - 10 μA All logic inputs are static. IDD Logic supply average current - 2.0 - - 2.0 - 2.0 mA DIN1 = DIN2 = 3.0MHz, LE is high CIN Logic input capacitance - 10 - - 10 - 10 pF --- ΔRONS VOS AC Electrical Characteristics (Over recommended operating conditions, V DD = 5.0V, unless otherwise specified) tWLE Time width of LE 150 - 150 - - 150 - ns --- tWDIN Time width of DIN 150 - 150 - - 150 - ns --- tSD Set up time before LE rises 150 - 150 - - 150 - ns --- tON Turn on time - 5.0 - - 5.0 - 5.0 μs VSIG = VPP -10V, RLOAD = 10kΩ tOFF Turn off time - 5.0 - - 5.0 - 5.0 μs VSIG = VPP -10V, RLOAD = 10kΩ Maximun VSIG slew rate - 20 - - 20 - 20 V/ns dv/dt Doc.# DSFP-HV238 B070813 3 --- Supertex inc. www.supertex.com HV238 AC Electrical Characteristics (Over recommended operating conditions, V 0OC Sym Parameter KO Off isolation KCR Switch crosstalk +25OC +70OC DD = 5.0V, unless otherwise specified) Units Conditions Min Max Min Typ Max Min Max -30 - -30 -33 - -30 - -45 - -45 -50 - -45 - -45 - -45 - - -45 - dB f = 5.0MHz, 50Ω load - 300 - - 300 - 300 mA 300ns pulse width, 2.0% duty cycle CSG(OFF) Off capacitance SW to GND 5.0 17 5.0 12 17 5.0 17 pF VSIG = 0V, f = 1.0MHz CSG(ON) 25 50 25 38 50 25 50 pF VSIG = 0V, f = 1.0MHz - - - 4.0 - - - - - - -4.0 - - - V RLOAD = 50Ω IID +VSPK -VSPK Output switch isolation diode current On capacitance SW to GND Output voltage spike f = 5.0MHz, 1.0kΩ/15pF load dB f = 7.5MHz, RLOAD = 50Ω load Logic Timing Diagram VDD DIN 50% 0V VDD tSD LE tWLE 50% 50% 50% 0V ON 90% SW 10% OFF TON TOFF Truth Table DIN2 DIN1 LE SW0 to SW7 SW8 to SW15 L L L OFF OFF L H L ON OFF H L L OFF ON H H L ON ON X X H Doc.# DSFP-HV238 B070813 4 Hold Previous State Supertex inc. www.supertex.com HV238 Test Circuits VPP -10V RL 10kΩ VPP -10V and VNN +10V VOUT VOUT VOUT RINT RINT RINT RGND RGND RGND VPP VPP VDD VNN VNN GND ISOL = 5.0V VPP VPP VDD VNN VNN GND VOUT RINT RINT RINT RINT 5.0V VPP VPP VDD VNN VNN GND 5.0V TON/TOFF Test Circuit DC Offset ON/OFF Switch OFF Leakage VOUT VOUT RINT VIN = 10VP-P @5.0MHz RINT VIN = 10VP-P @5.0MHz RLOAD RINT 50Ω VPP VPP VDD VNN VNN GND 5.0V VPP VPP VDD VNN VNN GND VOUT KCR = 20Log VIN OFF Isolation VNN RINT RINT 1.0kΩ RGND VPP VDD VNN VNN GND Isolation Diode Current Doc.# DSFP-HV238 B070813 5.0V VOUT VIN RINT ∆VOUT +VSPK VSIG RINT 50Ω -VSPK RINT VOUT RINT 1000pF RGND RGND VPP 5.0V Crosstalk VOUT IID RINT RGND KO = 20Log VSIG 50Ω NC VPP VPP VDD VNN VNN GND Output Voltage Spike 5 5.0V VPP VPP VDD VNN VNN GND 5.0V Q = 1000pF • ∆VOUT Charge Injection Supertex inc. www.supertex.com HV238 Pin Description Doc.# DSFP-HV238 B070813 Pin Function Pin Function 1 VNN 25 SW10 2 N/C 26 SW10 3 VPP 27 SW9 4 N/C 28 SW9 5 DIN1 29 SW8 6 LE 30 SW8 7 DIN2 31 SW7 8 N/C 32 SW7 9 N/C 33 SW6 10 VDD 34 SW6 11 GND 35 SW5 12 N/C 36 SW5 13 RGND 37 SW4 14 SW15 38 N/C 15 SW15 39 SW4 16 SW14 40 N/C 17 SW14 41 SW3 18 SW13 42 SW3 19 SW13 43 SW2 20 SW12 44 SW2 21 SW12 45 SW1 22 SW11 46 SW1 23 SW11 47 SW0 24 N/C 48 SW0 6 Supertex inc. www.supertex.com HV238 48-Lead LQFP Package Outline (FG) 7.00x7.00mm body, 1.60mm height (max), 0.50mm pitch D D1 E1 E Note 1 (Index Area D1/4 x E1/4) 48 1 e b Top View View B A A2 L2 Seating Plane L L1 A1 θ Gauge Plane Seating Plane View B Side View Note: 1. A Pin 1 identifier must be located in the index area indicated. The Pin 1 identifier can be: a molded mark/identifier; an embedded metal marker; or a printed indicator. Symbol MIN Dimension NOM (mm) MAX A A1 A2 b D D1 E E1 1.40* 0.05 1.35 0.17 8.80* 6.80* 8.80* 6.80* - - 1.40 0.22 9.00 7.00 9.00 7.00 1.60 0.15 1.45 0.27 9.20* 7.20* 9.20* 7.20* e L 0.50 BSC 0.45 0.60 0.75 L1 1.00 REF L2 0.25 BSC θ 0O 3.5O 7O JEDEC Registration MS-026, Variation BBC, Issue D, Jan. 2001. * This dimension is not specified in the JEDEC drawing. Drawings are not to scale. Supertex Doc. #: DSPD-48LQFPFG Version, D041309. (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to http://www.supertex.com/packaging.html.) Supertex inc. does not recommend the use of its products in life support applications, and will not knowingly sell them for use in such applications unless it receives an adequate “product liability indemnification insurance agreement.” Supertex inc. does not assume responsibility for use of devices described, and limits its liability to the replacement of the devices determined defective due to workmanship. No responsibility is assumed for possible omissions and inaccuracies. Circuitry and specifications are subject to change without notice. For the latest product specifications refer to the Supertex inc. (website: http//www.supertex.com) Supertex inc. ©2013 Supertex inc. All rights reserved. Unauthorized use or reproduction is prohibited. Doc.# DSFP-HV238 B070813 7 1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: 408-222-8888 www.supertex.com