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EVM7804BHFT

更新时间： 2024-01-15 03:48:02
品牌 Logo 应用领域
商升特 - SEMTECH 驱动器比较器电子
页数 文件大小 规格书
41页 645K
描述
133 MHZ Quad Pin Electronics Driver and Window Comparator

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EVM7804BHFT 数据手册

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E7804  
133 MHZ Quad Pin Electronics  
Driver and Window Comparator  
TEST AND MEASUREMENT PRODUCTS  
Features  
Description  
• Four Integrated Three-Statable Drivers and  
Window Comparators  
• Driver Voltage Range –0.2V, +5.2V  
• Comparator Voltage Range –2.0V to +5.5V  
• Internal Disconnect Switches  
• Internal Switches to an External PMU,  
Range –4.75V to +9.75V, up to ±40 mA  
• Per Pin Pull-Up/Down 2KΩ to (0V to +5V)  
• Per Pin Continuity Test (Force Current up to  
–250 µA, Limit Voltage 0 to –2V)  
• Self-Calibrating Driver Source Impedance to an  
External Reference (48Ω to 110Ω)  
• Low Power Dissipation (250mW/channel quiescent)  
• ꢀ28 Pin MQFP Package (with Internal Heat Spreader)  
The E7804 is a quad channel, monolithic ATE pin  
electronics solution manufactured in a high-performance  
BiCMOS process.  
The E7804 operates up to ꢀ33 MHz with up to 3V signals,  
and ꢀ00 MHz with 5V signals.  
Each channel has a three-statable driver capable of  
generating 5.4V swings over a –0.2V, +5.2V range. Drivers  
have independent high and low input levels that are  
buffered internally. Drivers feature a self-calibrating source  
impedance, programmable in the range 48Ω to 110Ω. The  
source impedance of all drivers matches R /ꢀ00, where  
EREF  
R
EREF  
is the external reference resistor. Each channel’s  
dual comparator has a range of –2.0V to +5.5V.  
Applications  
A channel’s driver and comparators are connected  
internally via high voltage switches to the VIO pin. These  
switches provide a means to disconnect the driver and  
comparator from the VIO pin.  
• Design for Test/Structural Pins in ATE  
• Low Cost  
–
–
Logic Testers  
Memory Testers  
The E7804 contains an independent network of high  
voltage switches intended to connect an external  
Parametric Measurement Unit (EPMU) to any channel (or  
channels) output on the channel’s POUT pin. The EPMU  
can have a range of –4.75V to +9.75V, up to ±40 mA.  
Typically, a channel’s VIO and POUT pins are connected  
together externally.  
Functional Block Diagram  
DVH[0]  
48 110Ω  
DHI[0]  
DEN[0]  
DVL[0]  
Each channel contains a continuity test circuit (CTC) with a  
switch to connect it to the channel’s POUT pin. This circuit  
forces a current up to –250 µA, and tests the resulting  
voltage with a 0 to –2V programmable limit. The result is  
tested by the channel’s comparator.  
OPN[0]  
CVA[0]  
QA[0]  
VIO[0]  
POUT[0]  
QB[0]  
CTC  
CVB[0]  
2K  
Control  
Logic  
LOAD  
RESET*  
Each channel contains a 2KΩ pull-up resistor with a switch  
to connect to the channel’s POUT pin.  
DVH[3]  
DHI[3]  
48 110Ω  
DEN[3]  
DVL[3]  
The channel’s function and connections are programmed  
using a serial interface. An individual channel’s function  
can be programmed, or a function of any set of channels  
(of multiple E7804s) can be programmed in parallel where  
each channel can belong to none, one, or more (up to 8)  
sets.  
OPN[3]  
CVA[3]  
QA[3]  
VIO[3]  
POUT[3]  
QB[3]  
CVB[3]  
CTC  
2K  
The E7804 features the inclusion of all four channels of  
pin electronics into a ꢀ28 pin package.  
SDOUT  
ANODE  
PMU_OUT  
United States Patent 7,064,575  
www.semtech.com  
Revision 7 / February 26, 2007  
ꢀ
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