Canon XRD9827REF user manual Preliminary

... the analog plusTM compa

EXAR Corporation 48720 Kato Road, Fremont, CA 94538 Phone (510)-668-7000, Fax (510)-668-7030

PRELIMINARY

Figure 6. Black Target Scan After Global Offset Adjust Using the 9827 Internal

Bandgap Reference Voltage

17.Then, set the dip switches to [111 00010000] and push the Serial Port button again. By doing this, a 1.24V reference voltage provided by an internal bandgap is applied to the VDCEXT pin. VDCEXT is connected to VREF pin (Pin 5) of the CANON CIS, this voltage is used by the CIS as a biasing voltage. Moreover, a 12K built-in resistor of the XRD9827 serves as a pull-down for the output of the CIS. By interfacing the XRD9827 with a CANON CIS, a designer can save two biasing diodes and two resistors and thus reduce cost.

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