The drivers can be supplied with HVP-HVM (dou-

ble supply mode) or with HVP-Ground (single

supply mode). In both cases they can achieve a

rail-to rail output dynamic range with an average

load current up to

±75mA.

In double supply mode the input stage has -

5V/+5V common mode dynamic range, while in

single supply configuration it has 1.2V up to 10V

input common mode dynamic range.

-

+

HVP

HVM

Rb

1

1

K

K

C

Qpiezo=K*[Cint*(1+Ra/Rb)+C]*Vdac

Qpiezo=Cost*Vdac

Cost=k*[Cint*(1+Ra/Rb)+C]

Vdac

D98IN970A

Ra

Cpiezo

Cint

Figure 2. Charge Mode Configuration (configuration example; the final application depends on

user needs according with Electrical Characteristics).

Input Multiplexer

MULTIPLEXER is controlled by internal logic with 3 digital inputs, supplied by IntVref (2.5V), it is com-

patible to 3.3V and 5V logic command signals, it allows to perform the following configuration:

Table 1.

AandB

(PIN1)

AorB

(PIN4)

WENA

(PIN15)

INA+Status

INB+Status

Comment

0

1

X

INA+

connected to AGND

INB+

connected to AGND

Both drv. inp. are disconnected from ext

PIN and are connected to AGND

0

0

X

INA+

connected to PIN9

INB+

connected to PIN16

Both drv. inp. are accesible

(MUX is transparent)

1

1

1

INA+

connected to PIN9

INB+

connected to AGND

INA is selected

1

0

1

INA+

connected to AGND

INB+

connected to PIN16

INB is selected

1

1

(F.E.)

INA+

connected to PIN9

INB+

connected to AGND

From WENA Falling Edge, changes on

AorB (pin 4) will not change MUX state.

1

0

(F.E.)

INA+

connected to AGND

INB+

connected to PIN16

From WENA Falling Edge, changes on

AorB (pin 4) will not change MUX state.

F.E. = Falling Edge

The MUX is at NOT inv. Inputs, and NO current flows through the MUX switches, because the driver in-

put stage is designed with high impedance stage.

L6660

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