What are the output levels that can be obtained with the e2v-grenoble devices?

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Question:

What are the output levels that can be obtained with the e2v-grenoble devices?

Answer:

ADC TS8388B

Our ADCs are designed to support the ECL and LVDS output modes.

However, the output levels are dependent upon two factors: VPLUSD and the output loading configuration.

VPLUSD can vary from 0V to 2.5V (typical).

As far as the output loading configuration is concerned, here are 2 examples:

- with a differential 50 Ohms termination, the differential outputs (OUT/OUTB) are respectively –1.02V/-1.35V and –1.35/-1.02V for VPLUSD = 0V. These are respectively 1.38V/1.05V and 1.05V/1.38V for VPLUSD = 2.4V.

- with an open loaded termination, the differential outputs (OUT/OUTB) are respectively –0.8V/-1.6V and –1.6V/-0.8V for VPLUSD = 0V. They are respectively 1.6V/0.8V and 0.8V/1.6V for VPLUSD = 2.4V.

ADC TS83102G0

Our ADCs are designed to support the ECL and LVDS output modes.

However, the output levels are dependent upon two factors: VPLUSD and the output loading configuration.

VPLUSD can vary from -0.8V to +1.6V (typical).

As far as the output loading configuration is concerned, here are 2 examples:

- with a differential 50 Ohms termination, the differential outputs (OUT/OUTB) are respectively -1.2V/-0.9V and -0.9/-1.2V for VPLUSD = -0.8V. These are respectively +1.2V/+1.5V and +1.5V/+1.2V for VPLUSD = 1.45V.

- with an open loaded termination, the differential outputs (OUT/OUTB) are respectively -1.3V/-0.8V and -0.8V/-1.3V for VPLUSD = -0.8V. They are respectively +1.1V/+1.6V and +1.6V/+1.1V for VPLUSD = 1.45V.

Notes:

1) In order to obtain the –0.8V voltage, we advise you to connect VPLUSD to the ground plane through a 5.1 Ohms resistor.

DMUX

e2v-Grenoble DMUX is designed to support the ECL, PECL and TTL output modes.

However, the output levels are dependent upon two factors: VPLUSD and the “swing adjust” value.

VPLUSD can vary from 0V to 3.5V (typical) and determines the common mode voltage of the output signals.

The “swing adjust” function enables to tune the swing of the output buffers from 0.2V to 2V.

This allows you to have a wide range of output modes available.

Caution: The output current should not exceed 36mA to avoid damages to the device.