FPD03784 datasheet(8/12 Pages) NSC

8 / 12 page

Functional Description (Continued)

Optional — The UP die pad is bounded on each side by a

logic High and a logic Low pad. This allows the state of UP

to be chosen on the TCP to eliminate an input pin.

CS — CHARGE SHARE VOLTAGE REFERENCE

This input provides the reference for the common node

voltage during charge share time.

DD1 — DIGITAL VOLTAGE SUPPLY

Positive supply voltage for the digital logic functions of the

driver.

DD2 — ANALOG VOLTAGE SUPPLY

Positive supply voltage for the analog functions of the driver.

GMA1–VGMA12 — RDAC REFERENCES (INPUTS)

The reference voltages to the upper and lower RDACs used

to control the inverse gamma transfer function of the driver.

Option – Any or all of the inputs VGMA2 through VGMA5 and

VGMA8 through VGMA11 can be left undriven (floating) at the

designer’s option to eliminate input pins and/or external

reference circuitry.

HBIAS — HIGH BIAS CURRENT VOLTAGE SUPPLY

Optional positive supply voltage that provides a constant

bias current to the output amplifiers to extend dynamic

range. When separately provided, V

HBIAS must be 1.5V

greater than V

GMA1 (see Table iii for limits). When not sepa-

rately provided, V

HBIAS must be supplied by VDD2. In this

configuration, V

GMA1 must be held at or below VDD2 − 1.5V

(see table iii for limits).

SS1 — DIGITAL GROUND

Digital ground reference voltage.

SS2 — ANALOG GROUND

Analog ground reference voltage.

DS200152-8

FIGURE 1. External Components and Connections for the I

REF,ISIN and ISOUTPins

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