Описание
The Supertex HV2701 is a low charge injection, 16-channel, high voltage, analog switch integrated circuit (IC) with bleed resistors. The device can be used in applications requiring high voltage switching controlled by low voltage control signals, such as medical ultrasound imaging and piezoelectric transducer drivers. The bleed resistors eliminate voltage built up on capacitive loads such as piezoelectric transducers.Input data are shifted into a 16-bit shift register that can then be retained in a 16-bit latch. To reduce any possible clock feed-through noise, the latch enable bar should be left high until all bits are clocked in. Data is clocked in during the rising edge of the clock. Using HVCMOS technology, this device combines high voltage bilateral DMOS switches and low power CMOS logic to provide efficient control of high voltage analog signals.The device is suitable for various combinations of high voltage supplies, e.g., VPP/VNN: +40V/-160V, +100V/-100V, and +160V/-40V.
- HVCMOS technology for high performance
- Integrated bleed resistors on the outputs
- 16-channel high voltage analog switch
- 3.3V input logic level compatible
- 20MHz data shift clock frequency
- Very low quiescent power dissipation (-10µA)
- Low parasitic capacitance
- DC to 50MHz small signal frequency response
- -60dB typical OFF-isolation at 5.0MHz
- CMOS logic circuitry for low power
- Excellent noise immunity
- Cascadable serial data register with latches
- Flexible operating supply voltages
