E8403A中文资料

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November 7, 2007E8403A

100-500MHz Dual Channel, Digitally Programmed Pin Electronics Solution

Functional Block Diagram

Applications

The E8403A has a Driver and Window Comparator receiver

for each channel with performance settings to save power or

maximize bandwidth.

All level’s DACs for the Driver and Receiver are on-chip

and are programmed via a high speed serial bus. Each of

the level’s DACs have offset and gain registers for on-chip

calibrations.

The Driver circuit is capable of forcing two levels to the DUT

(DVH and DVL) as well as a third voltage for a termination

level (DVT) to terminate high-speed DUT signals to the Com-parator receivers into a high quality 50? load. The Driver

can also be configured to a high impedance (HiZ) state for

an open termination of DUT signals.

Waveform clamps are also available to clip the input signals

from a DUT when not using the Driver as a termination.

The clamps prevent reflections from returning to the DUT

transmission line which can create timing errors and false triggering.

All of the on-chip DAC levels and configuration registers for each channel may be programmed via SET commands. This PinCast method of programming allows all channels in a system to be programmed concurrently with a simple set command whereby any pin channel that had been assigned to that set will respond.

The two driver circuits may be placed into a differential drive mode. This reduces driver-to-driver skews to levels difficult to achieve by external deskewing. The two window comparators may also be placed into a differential receive mode. These features enable higher quality testing of differential signals to/from the DUT.

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Two Fully Integrated Pin Channels including:

- 16-bit DACs for each level

- Tri-level Driver - Window Receiver

- Waveform Clamps

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Driver, Comparator maximum 8V span over -2 to

+7V range

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Configurable Output Protection ? 50MHz Serial Bus Programming

- SPI?/QSPI?/ MICROWIRE?

- Daisy-chainable ?

Power Dissipation

~0.8W/Channel (quiescent, low performance, I/O Mode)

~0.9W/Channel (quiescent, high performance, I/O Mode)?

Pin and Software Compatible with E8400, E8404, E8405, E8410 and E8415

?

Digitally Programmable Performance/Power ?

Differential Drive and Receive Functionality ?

Optimal Small Swing Performance ?

Small 11mm x 11mm Package

? Logic Testers

? Mixed-Signal Test Equipment ? Memory Testers

? Flash Memory Testers ?

ASIC Verifiers

SPI and QSPI and trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

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