HV238 Series

16-Channel High Voltage Analog Switch with Bleed Resistors

Catalog

16-Channel High Voltage Analog Switch with Bleed Resistors

Part	Multiplexer/Demultiplexer Circuit	On-State Resistance (Max) [Max]	Supplier Device Package	Applications	Package / Case	Voltage - Supply, Single (V+) [Max]	Voltage - Supply, Single (V+) [Min]	Operating Temperature [Max]	Operating Temperature [Min]	Switch Circuit	Number of Channels	Mounting Type	Voltage - Supply, Dual (V±) [Min]	Voltage - Supply, Dual (V±) [Max]	Voltage - Supply, Dual (V±)
Microchip Technology HV238TQ-G	1:1	22 Ohm	48-TQFP (7x7)	Ultrasound	48-TQFP	12.6 V	4.75 V	70 °C	0 °C	SPST	16
Microchip Technology HV238FG-G	1:1	22 Ohm	48-LQFP (7x7)	Ultrasound	48-LQFP	50 V	15 V	70 °C	0 °C	SPST	16	Surface Mount	-100 V	100 V	225 V

Catalog

16-Channel High Voltage Analog Switch with Bleed Resistors

Key Features

• + HVCMOS® technology for high performance

• + 220V operating conditions

• + Output on-resistance typically 22O

• + 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

Description

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.