L6660 Просмотр технического описания (PDF) - STMicroelectronics
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L6660 Datasheet PDF : 9 Pages
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L6660
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.
Figure 2. Charge Mode Configuration (configuration example; the final application depends on
user needs according with Electrical Characteristics).
HVP
Qpiezo=K*[Cint*(1+Ra/Rb)+C]*Vdac
Qpiezo=Cost*Vdac
Cost=k*[Cint*(1+Ra/Rb)+C]
1
K
Vdac
+
-
HVM
Cpiezo
RP
1
K
Ra
Rb
C
Cint
D98IN970A
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 AorB WENA
(PIN1) (PIN4) (PIN15)
INA+Status
0
1
X
INA+
connected to AGND
0
0
X
INA+
connected to PIN9
1
1
1
INA+
connected to PIN9
1
0
1
INA+
connected to AGND
1
1 (F.E.)
INA+
connected to PIN9
1
0 (F.E.)
INA+
connected to AGND
F.E. = Falling Edge
INB+Status
INB+
connected to AGND
INB+
connected to PIN16
INB+
connected to AGND
INB+
connected to PIN16
INB+
connected to AGND
INB+
connected to PIN16
Comment
Both drv. inp. are disconnected from ext
PIN and are connected to AGND
Both drv. inp. are accesible
(MUX is transparent)
INA is selected
INB is selected
From WENA Falling Edge, changes on
AorB (pin 4) will not change MUX state.
From WENA Falling Edge, changes on
AorB (pin 4) will not change MUX state.
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.
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