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HV2918/R4X

Description
16 电路 IC 开关 2:1 9 欧姆 64-VQFN(9x9)
Categorysemiconductor    The interface of IC   
ManufacturerMicrochip
Websitehttps://www.microchip.com
Environmental Compliance
Download Datasheet Parametric View All

HV2918/R4X Overview

16 电路 IC 开关 2:1 9 欧姆 64-VQFN(9x9)

HV2918/R4X Parametric

Parameter NameAttribute value
category
MakerMicrochip
series-
Packagetray
switching circuitSPDT
Multiplexer/Demultiplexer Circuit2:1
Number of circuits16
On-resistance (maximum value)9 ohms
Voltage - Power Supply, Single (V+)4.5V ~ 6.3V
Voltage - Power Supply, Dual (V±)-
Switching time (Ton, Toff) (maximum)5µs,5µs
-3db bandwidth50MHz
charge injection100pC
Channel capacitance (CS(off), CD(off))21pF
Current - Leakage (IS(off)) (maximum)3µA
crosstalk-70dB @ 5MHz
Operating temperature0°C ~ 70°C(TA)
Installation typesurface mount type
Package/casing64-VFQFN Exposed Pad
Supplier device packaging64-VQFN(9x9)
Basic product numberHV2918
HV2818/HV2918
No High-Voltage Bias, Low Harmonic Distortion,
32-Channel, High-Voltage Analog Switch
Features
• 32-channel (16 2:1 MUX) High-Voltage Analog
Switch
• Only +5V Bias Supply Required
• 3.3V and 5V CMOS Input Logic Level
• Asymmetric Switch Topology for Small Size
• 66 MHz Data Shift Clock Frequency
• Low-Parasitic Capacitance
• Low Harmonic Distortion
• DC to 50 MHz Analog Small-Signal Frequency
• 200 kHz to 50 MHz Large Signal Frequency
• -70 dB Typical Off Isolation at 5.0 MHz
• Excellent Noise Immunity
• Cascadable Serial Data Register with Latches
• Integrated Bleed Resistors on the SW Outputs
(HV2918 only)
General Description
The HV2818/HV2918 are low harmonic distortion, low
charge injection, 16 2:1 multiplexer/demultiplexer, high
-voltage analog switches without high-voltage bias
supplies. They are intended for use in applications
requiring high-voltage switching controlled by low-
voltage control signals, such as medical ultrasound
imaging, driving piezoelectric transducers and
printers.
The HV2818/HV2918 are pin-to-pin compatible to
high-voltage bias HV2801/HV2901, except for bias
voltage pins. HV2818/HV2918 are available in a 64-
pin, 9 x 9 mm QFN package. HV2818/HV2918 have
asymmetric topology to implement a small size in low
voltage bias high-voltage switches while keeping
performance such as peak current. The SW pin can
pass high-voltage pulsed signals when the switch is
ON. During the OFF state, high-voltage should not be
applied to the SW pin due to its asymmetric topology.
In medical ultrasound systems, the Y pin should be
connected to the AFE (analog front end) and the SW
pin should be connected to a single piezoelectric
transducer element to avoid high-voltage in the SW
pin during the switch OFF state.
HV2818 and HV2918 are identical, except for bleed
resistors at SW pins. HV2818 does not have the bleed
resistors at SW pins like HV2801. HV2918 has the
bleed resistors at SW pins like HV2901. The bleed
resistors eliminate possible voltage build-up on
capacitive loads such as piezoelectric transducers.
The ON/OFF state of the 32 switches is programmed
individually through a digital serial interface.
The devices only need a +5V low voltage bias supply.
However, all of the analog switches can pass up to
±100V high-voltage pulsed signals. Like other low
voltage bias switches, the HV2818/HV2918 cannot
pass high-voltage DC signals. They can only pass high
-voltage pulsed signals up to 2.5
μs
pulse width.
These devices have typical 6Ω ON resistance and
50 MHz bandwidth for small signals.
Applications
• Medical Ultrasound Imaging
• Non-Destructive Testing (NDT) Metal Flaw
Detection
• Piezoelectric Transducer Drivers
• Inkjet Printer Head
• Optical MEMS Modules
2020 Microchip Technology Inc.
DS20006375A-page 1
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