Overview
The STHV64SW is an integrated circuit developed by STMicroelectronics, featuring 64 independent switches. It is primarily designed for medical ultrasound applications but is also versatile for driving piezoelectric, capacitive, or MEMS transducers, and for use in industrial applications such as generic high voltage switches. The device includes a shift register for serial communication, self-biased high voltage MOSFET gate drivers, high power N-channel MOSFETs, bleed resistance for each switch, a thermal sensor, and undervoltage lockout. Additionally, it incorporates self-biasing and thermal shutdown blocks, ensuring robust and reliable operation.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Switches | 64 |
| Peak-to-Peak Input and Output Signal | 200 V |
| Operating Ranges | -100 V to +100 V, 0 V to 200 V, -200 V to 0 V |
| Peak Output Current | ±3 A |
| Input Slew Rate | 40 V/ns (without load) |
| Low Voltage Supply | +3.3 V |
| On-Resistance | Low |
| Cross-Talk Between Channels | Very Low |
| Parasitic Capacitance | Low |
| Bleed Resistor on Outputs | 42 kΩ |
| Thermal and Undervoltage Protection | Yes |
| Control Interface | Serial |
| Data Shift Clock Frequency | 20 MHz |
| Package Type | TFBGA 12X12X1.2 196 P0.8 B0.4 |
| Operating Temperature Range | -40°C to 125°C |
Key Features
- Rail-to-rail input signal
- Low on-resistance and low parasitic capacitance
- Very low cross-talk between channels
- Thermal and undervoltage protection
- Latch-up free
- Control through serial interface with a 20 MHz data shift clock frequency
- Cascadable serial register with latches
- Self-biasing and thermal shutdown blocks
Applications
- Medical ultrasound applications
- Driving piezoelectric, capacitive, or MEMS transducers
- Industrial applications such as generic high voltage switches
Q & A
- What is the primary application of the STHV64SW?
The STHV64SW is primarily designed for medical ultrasound applications. - How many independent switches does the STHV64SW feature?
The STHV64SW features 64 independent switches. - What are the operating voltage ranges of the STHV64SW?
The operating ranges are from -100 V to +100 V, from 0 V to 200 V, and from -200 V to 0 V. - What is the peak output current capability of the STHV64SW?
The switches can provide up to ±3 A peak output current. - What is the input slew rate of the STHV64SW?
The input slew rate is 40 V/ns without load. - What is the low voltage supply requirement for the STHV64SW?
The device requires only a +3.3 V low voltage supply. - Does the STHV64SW have thermal protection?
Yes, it includes thermal and undervoltage protection. - How is the STHV64SW controlled?
The device is controlled through a serial interface. - What is the data shift clock frequency of the STHV64SW?
The data shift clock frequency is 20 MHz. - Is the STHV64SW latch-up free?
Yes, the STHV64SW is latch-up free.
