MAX4800 데이터 시트보기 (PDF) - Maxim Integrated

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MAX4800

Low-Charge Injection, 8-Channel, High-Voltage Analog Switches

Maxim Integrated 

Low-Charge Injection,

8-Channel, High-Voltage Analog Switches

DIN

DN+1

50%

DN

50%

DN-1

LE

CLK

DOUT

tWL

50%

50%

tCS

50%

50%

tDS

tDH

tDO

ON

SWITCH

OFF

CLR

50%

50%

tWC

Figure 1. Serial Interface Timing

10%

tOFF

tON

90%

Detailed Description

The MAX4800/MAX4801/MAX4802 provide high-volt-

age switching on eight channels for ultrasound imaging

and printer applications. The devices utilize BCDMOS

process technology to provide eight high-voltage low-

charge-injection SPST switches, controlled by a digital

interface. Data is clocked into an internal 8-bit shift reg-

ister and retained by a programmable latch with enable

and clear inputs. A power-on reset function ensures

that all switches are open on power-up.

The MAX4800/MAX4801/MAX4802 operate with a wide

range of high-voltage supplies including: VPP/VNN =

+100V/-100V, +185V/-15V, or +40V/-160V. The digital

interface operates from a separate VDD supply from

+2.7V to +13.2V. Digital inputs DIN, CLK, LE, and CLR

are +13.2V tolerant, independent of the VDD supply

voltage. The MAX4802 provides integrated 35kΩ bleed

resistors on each switch terminal to discharge capaci-

tive loads.

The MAX4800 and MAX4802 are drop-in replacements

for the Supertex HV20220 and HV232, respectively.

The MAX4801 is a drop-in replacement for the Supertex

HV20320.

Analog Switch

The MAX4800/MAX4801/MAX4802 allow a peak-to-

peak analog signal range from VNN + 10V to VPP - 10V.

Analog switch inputs must be unconnected, or satisfy

VNN ≤ (VCOM_, VNO_) ≤ VPP during power-up and

power-down.

High-Voltage Supplies

The MAX4800/MAX4801/MAX4802 allow a wide range

of high-voltage supplies. The devices operate with VNN

from -160V to -15V and VPP from +40V to VNN + 200V.

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