鈥?/div>
TELEPHONE RING GENERATOR
PIEZO ELECTRIC POSITIONING
ELECTROSTATIC TRANSDUCER & DEFLECTION
DEFORMABLE MIRROR FOCUSING
DESCRIPTION
The PA40 is a high voltage monolithic MOSFET operational
ampli鏗乪r achieving performance features previously found
only in hybrid designs while increasing reliability. Inputs are
protected from excessive common mode and differential
mode voltages. The safe operating area (SOA) has no second
breakdown limitations. External compensation provides the
user 鏗俥xibility in choosing optimum gain and bandwidth
for the application.
The PA40 is packaged in Apex's 7 LEAD TO220 package.
The metal back of the package is tied to 鈥揤s. The 15 mil
minimum spacing of the TO220 package is adequate to
stand-off the 250V rating of the PA40. The user must insure
that a minimum of 11 mils spacing is maintained between
pins for the circuit board artwork. If spacing is less than 11
mils, the voltage must be derated.
EQUIVALENT SCHEMATIC
3
D1
Q1
Q2
Q3
Q4
1
+V
S
I
OUT
5
Q5
6
Q6
鈥揑N
D2
2
COMP
D3
D4
D5
COMP Q8
7
+IN
Q11
Q12
Q13
Q10
Q14
鈥揤
S
4
TYPICAL APPLICATION
2.67K
140V
IN6300A
15V
2.5K + 15
.22
MUR130
3.3pF
10K
4
7
PA40
100K
SUB
EXTERNAL CONNECTIONS
2.2K
90Vrms
10K
5
6
MUR120
ICL8038
8
2
PHASE COMPENSATION
IN6300A
100
.22
330pf
82K
10
*
* 1.5
碌F
@ 16Hz
1.2
碌F
@ 20Hz
11
鈮?/div>
鈮?/div>
鈮?/div>
Gain
1
10
鈮?0
C
C
18pF
10pF
3.3pF
R
C
2.2K
2.2K
2.2K
MUR120
鈥?5V
鈥?40V
MUR130
Telephone Ring Generator
NOTE: At gains above 30, Rc and Cc
may be omitted.
1
- IN
2
+ IN
3
+VS
4
-VS
5
OUT
6
COMP (Rc)
7
COMP (Cc)
The PA40 is set for a gain of 38.5 boosting the 2.33V signal
to 90V. The recommended compensation for gains above 30
is used. If capacitive loading is at least 330pF at all times, the
recommended snubber network may be omitted.
APEX MICROTECHNOLOGY CORPORATION 鈥?TELEPHONE (520) 690-8600 鈥?FAX (520) 888-3329 鈥?ORDERS (520) 690-8601 鈥?EMAIL prodlit@apexmicrotech.com
1
2
3
4
