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Technical content

Features

► Up to ±100V input voltage protection ► Low on resistance - 15Ω typical ► Fast switching speed ► Effectively, a simple two terminal device ► No external supplies needed

Applications

► Medical ultrasound imaging ► NDT applications ► Fast resettable fuses ► High side switches ► Data acquisition General Description The Supertex MD0100 is a high voltage, two terminal, bi- directional, current-limiting protection device. The two terminals are interchangeable. It is designed to protect a low noise receiver from the high voltage transmit pulses in ultrasound applications and is commonly referred to as a T/R (transmit and receive) switch. The MD0100 can be considered as a normally closed switch with a typical switching resistance of 15Ω that allows small signals to pass. Once the voltage drop across the two terminals exceeds a nominal value of ±2.0V, the device will start to turn off. In the off state, the MD0100 can withstand up to ±100V across its terminals. A small amount of current, typical of 200µA, is allowed to flow through. The applications for the MD0100 are not limited to just ultrasound. It can also be used for resettable fuses to protect power lines, output short circuit protection, and data acquisition. The MD0100 is available in the SOT-89 package as a single channel device for ease of assembly. It is also available in a 4.0x4.0mm 8-Lead DFN package as a two channel device for high density requirements. Typical Application Circuit High Voltage Protection T/R Switch Transmitter Piezo Transducers B A Receiver TX RX High Voltage Switches +90V -90V T/R Switch MD0100 Logic Control and Signal Processing

Supertex inc. www.supertex.com Doc.# DSFP-MD0100 C070113 Absolute Maximum Ratings1 Pin Configuration Product Marking 8-Lead DFN (top view) (Pads are at bottom of device) COM1 COM2 COM1 COM1 COM2 COM2 A COM B COM M10YW Y = Last Digit of Year Sealed W = Code for Week Sealed = “Green” Packaging SOT-89 SOT-89 Package may or may not include the following marks: Si or Package may or may not include the following marks: Si or 0100 YWLL Y = Last Digit of Year Sealed W = Code for Week Sealed LL = Lot Number = “Green” Packaging 8-Lead DFN Parameter Value VA-B, differential voltage drop 0 to ±110V Maximum junction temperature +125°C Storage temperature range -65°C to 150°C Power dissipation, 8-Lead DFN2 1.1W Power dissipation, SOT-892 1.6W Notes: 1. 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. 2. Mounted on FR4 board, 25mm x 25mm x 1.57mm

Ordering Information

Part Number Package Options Packing MD0100DK6-G (Dual Channel) 8-Lead (4x4) DFN 3000/Reel MD0100N8-G (Single Channel) 3-Lead TO-243AA (SOT-89) 2000/Reel Typical Thermal Resistance Package θja 8-Lead DFN 44OC/W 3-Lead TO-243AA (SOT-89) 133OC/W -G denotes a lead (Pb)-free / RoHS compliant package Electrical Characteristics (TJ = 25ºC, unless otherwise specified) Sym Parameter Min Typ Max Units Conditions VA-B Max. differential input voltage from A to B ±100 - - V IA-B = ±500µA RSW Switch ON resistance from A to B - 15 - Ω IA-B = ±5.0mA VTRIP VA-B trip point to turn off - ±1.0 ±2.0 V --- VOFF Switch turn off voltage - ±2.0 - V IA-B = ±1.0mA IA-B(OFF) Switch off current - ±200 ±300 µA VA-B = ±100V IPEAK Peak switching current - ±60 - mA See Fig. 8

Supertex inc. www.supertex.com Doc.# DSFP-MD0100 C070113 Block Diagram Switch Control COM A B Typical I-V Characteristics IA-B -VOFF -VTRIP +100V IA-B = -200µA -100V IA-B = +200µA VA-B RSW = 15Ω +IPEAK -IPEAK +VTRIP +VOFF +1.0mA +1.0mA Electrical Characteristics (TJ = 25ºC, unless otherwise specified) Sym Parameter Min Typ Max Units Conditions TOFF Turn off time - - 20 ns See Fig. 2, 3 & 4 TON Turn on time - - 20 ns See Fig. 5, 6 & 7 CSW(ON) Switch ON capacitance from A to B - 21 - pF SW = ON CSW(OFF) Switch OFF capacitance from A to B - 15 - pF VSW = 25V BW Small signal bandwidth - 100 - MHz RLOAD = 50Ω TJ Operating junction temperature -40 - +125 °C ---

Supertex inc. www.supertex.com Doc.# DSFP-MD0100 C070113 Pin Description (SOT-89) Name Description A Switch terminal A COM Leave floating B Switch terminal B Pin Description (8-Lead DFN) Pin Name Description

1 A1 Switch terminal A1

2 B1 Switch terminal B1

3 A2 Switch terminal A2

4 B2 Switch terminal B2

5 COM2

6 COM2

7 COM1

8 COM1

Heat Slug 1 COM1 Leave floating Heat Slug 2 COM2 Leave floating

Supertex inc. www.supertex.com Doc.# DSFP-MD0100 C070113 8-Lead DFN Package Outline (K6) 4.00x4.00mm body, 1.00mm height (max), 1.00mm pitch (dual pad) Symbol A A1 A3 b D D2 E E2 e K1 L L1 θ Dimension (mm) MIN 0.80 0.00 0.20 REF 1.00 BSC 0.50 REF 0.40 0.00 0O Drawings not to scale Supertex Doc. #: DSPD-8DFNK64x4P100, Version C010813 Bottom View View B Note 1 (Index Area D/2 x E/2) Note 1 K1/2 Seating Plane Top View Side View A D E eb A3 L View B Note 1 (Index Area D/2 x E/2) Note 3 Note 2 θ Notes: 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. 2. Depending on the method of manufacturing, a maximum of 0.15mm pullback (L1) may be present. 3. The inner tip of the lead may be either rounded or square.

Supertex inc. does not recommend the use of its products in life support applications, and will not knowingly sell them for use in such appl ications unless it receives an adequate “product liability indemnification insurance agreement.” Supertex inc. does not assume responsibility for use of devices described, and limits its liabilit y 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) ©2013 Supertex inc. All rights reserved. Unauthorized use or reproduction is prohibited. Supertex inc.

1235 Bordeaux Drive, Sunnyvale, CA 94089

Tel: 408-222-8888 www.supertex.com MD0100 (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.) Doc.# DSFP-MD0100 C070113 3-Lead TO-243AA (SOT-89) Package Outline (N8) Symbol A b b1 C D D1 E E1 e e1 H L Dimensions (mm) 1.50 BSC 3.00 BSC 3.94 0.73† JEDEC Registration TO-243, Variation AA, Issue C, July 1986. † This dimension differs from the JEDEC drawing Drawings not to scale. Supertex Doc. #: DSPD-3TO243AAN8, Version F111010. b b1 D E H E1 C A 1 2 3 e Top View Side View L