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PDF L6660 Data sheet ( Hoja de datos )
| Número de pieza | L6660 | |
| Descripción | MILLI-ACTUATOR DRIVER | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de L6660 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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® L6660
90V BCD MIXED TECHNOLOGY
SO24 PLASTIC SMD PACKAGE
4.5 TO 13.2V OPERATIVE VOLTAGE
±25 TO ±35V OUTPUT VOLTAGE RANGE
SELECTABLE BY EXTERNAL RESISTORS
FULL-WAVE RESONANT DC-DC CON-
VERTER USING SINGLE COIL FOR DUAL
HIGH VOLTAGE GENERATOR WITH OUT-
PUT SLEW RATE CONTROL AND SELF
CURRENT LIMITING FOR LOW EMI
±35V OR 0/+70V OPERATIVE VOLTAGE
DRIVING CONFIGURATION MODES:
1. SINGLE ENDED VOLTAGE MODE
2. DIFFERENTIAL VOLTAGE MODE
3. SINGLE ENDED CHARGE MODE
DOUBLE OPERATIONAL AMPLIFIERS WITH
500KHZ GAIN BANDWIDTH PRODUCT AND
LOAD DRIVING CAPABILITY FROM 0.4nF
UP TO 24nF
ANALOG VOLTAGE SHIFTING CIRCUITRY
BLOCK AND APPLICATION DIAGRAM
MILLI-ACTUATOR DRIVER
PRODUCT PREVIEW
SO24(Shrink)
INTERNAL 2.5V VOLTAGE REFERENCE
POWER SAVING SLEEP MODE
USER SPECIFIED INPUT REFERENCE
(2.25V DC)
DESCRIPTION
The L6660 is a piezoelectric actuator driver.
[7] SLEEP
[17] INB(inv)
[16] INB(not inv)
[10] Vosh
[11] Vin0-5
From DAC
OUTPUT
[8] INA(inv)
[9] INA(not inv)
[15] WENA
[4] AorB
[1] AandB
[20] V5/12AP
[14] IN Vref
[13] Vref out
SLEEP
Shifter
Vosh=Vin-Vref
HVP
-
B
+
HVM
HVP
-
A
+
HVM
MUX
Controll
Logic
Digital
Pwr Supply
A-GND
Internal
Current
Bias
+
-
Internal Band-gap
and 2.5 reference Voltage
100nF
[12] GND-A
[24] HVP
1K
1K
1K
1K
V5/12
Back-Up
Oscill.
DC-DC LOGIC
[21] Vfdb
:5
[22] RCcomp
[18] OUTK-B
[19] OUT1-B
[23] HVM
[6] OUTK-A
[5] OUT1-A
V512
47µH
[3] COIL
2.2nF
+35V
Rs
[2] GND-P
68nF
220nF
Rfdb1
HVM Rfdb2
-35V
220nF
47nF HVP=VrefIN(1+Rfdb1/Rfdb2)
December 2000
This is preliminary information on a new product now in development. Details are subject to change without notice.
1/9
1 page  
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]
1K
Vdac
+
-
HVM
Cpiezo
1K
RP
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 1X
INA+
connected to AGND
0 0X
INA+
connected to PIN9
111
INA+
connected to PIN9
101
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.
5/9
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| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet L6660.PDF ] | |
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