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HIGH VOLTAGE POWER OPERATIONAL AMPLIFIERS
PA141/PA142 • PA141A/PA142A
M I C R O T E C H N O L O G Y
HTTP://WWW.APEXMICROTECH.COM
(800) 546-APEX
(800) 546-2739
FEATURES
• • • • • • • MONOLITHIC MOS TECHNOLOGY LOW COST HIGH VOLTAGE OPERATION—350V LOW QUIESCENT CURRENT—2mA NO SECOND BREAKDOWN HIGH OUTPUT CURRENT—120 mA PEAK AVAILABLE IN DIE FORM—CPA141
APPLICATIONS
• • • • • PIEZO ELECTRIC POSITIONING ELECTROSTATIC TRANSDUCER & DEFLECTION DEFORMABLE MIRROR FOCUSING BIOCHEMISTRY STIMULATORS COMPUTER TO VACUUM TUBE INTERFACE
8-PIN TO-3 PACKAGE STYLE CE
TYPICAL APPLICATION
20R +175 2.2K 10pF A1
PA141/142
10-PIN SIP PACKAGE STYLE DW
Ref: APPLICATION NOTE 20: "Bridge Mode Operation of Power Amplifiers" R V IN 20R 20R +175 2.2K 10pF A2 R CL R CL
PA141/142
DESCRIPTION
The PA141/PA142 are high voltage monolithic MOSFET operational amplifiers 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 and can be observed with all type loads by choosing an appropriate current limiting resistor. External compensation provides the user flexibility in choosing optimum gain and bandwidth for the application. The PA141 is packaged in a hermetically sealed TO-3 and all circuitry is isolated from the case by an aluminum nitride (AlN) substrate. The PA142 is packaged in APEX’s hermetic ceramic SIP package.
Rn Cn
PIEZO 180 TRANSDUCER 180 100 Ω 100 Ω 330pF 330pF
–175
LOW COST 660V p-p PIEZO DRIVE
–175
Two PA141/PA142 amplifiers operated as a bridge driver for a piezo transducer provides a low cost 660 volt total drive capability. The RN CN network serves to raise the apparent gain of A2 at high frequencies. If RN is set equal to R the amplifiers can be compensated identically and will have matching bandwidths.
EXTERNAL CONNECTIONS
R CL RC COMP 3 CC
2 COMP 1
EQUIVALENT SCHEMATIC
D1 Q1 Q2 Q3 Q4 (1) 5 –IN D2 (2) 6 +IN Q11 Q12 Q13 D3 D4 D5 Q5 (8) 2 Q6 COMP COMP Q8 (9) 3 Q7 4 (10) OUT I LIM 1 (7)
5
8 (6) +VS
PHASE COMPENSATION
I LIM
OUT
4
Gain 1 10 30
CS 330pF
CC 18pF 10pF 3.3pF
RC 2.2K 2.2K 2.2K
TOP VIEW
–IN
6
8
+IN
–VS
7
+VS
RS 100 Ω
CS ,CC ARE NPO RATED FOR FULL SUPPLY VOLTAGE. R CL = 3 I LIM
Q9
PA141
1 2 3 NC 4
TOP VIEW 5 6 +VS I LIM RS 100 Ω CS 330pf 7 8 CC RC 9 CC 10 OUT
Q10 Q14 –VS 7 (5)
–IN +IN
NC –VS
CC RCL
PA142
5
PA141 PIN NUMBER
(1) PA142 PIN NUMBER
NOTE: PA141 Recommended mounting torque is 4-7 in•lbs (.45 -.79 N•m) CAUTION: The use of compressible, thermally conductive insulators may void warranty.
APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL
[email protected]
1
PA141/PA142 • PA141A/PA142A
ABSOLUTE MAXIMUM RATINGS
SUPPLY VOLTAGE, +VS to –VS OUTPUT CURRENT, continuous within SOA OUTPUT CURRENT, peak POWER DISSIPATION, continuous @ TC = 25°C INPUT VOLTAGE, differential INPUT VOLTAGE, common mode TEMPERATURE, pin solder – 10 sec TEMPERATURE, junction2 TEMPERATURE, storage TEMPERATURE RANGE, powered (case)
ABSOLUTE MAXIMUM RATINGS SPECIFICATIONS
PA141/PA141A PA142/PA142A 350V 350V 60 mA 60 mA 120 mA 120 mA 12W 9W ±16 V ±16 V ±VS ±VS 300°C 220°C 150°C 150°C –65 to +150°C –65 to +150°C –40 to +125°C –40 to +125°C PA141A/PA142A MIN TYP MAX 15 40/* * * * * *
*
SPECIFICATIONS
PARAMETER INPUT OFFSET VOLTAGE, initial OFFSET VOLTAGE, vs. temperature4, 7 OFFSET VOLTAGE, vs supply OFFSET VOLTAGE, vs time BIAS CURRENT, initial7 BIAS CURRENT, vs supply OFFSET CURRENT, initial7 INPUT IMPEDANCE, DC INPUT CAPACITANCE COMMON MODE, voltage range COMMON MODE REJECTION, DC NOISE, broad band NOISE, low frequency GAIN OPEN LOOP at 15Hz BANDWIDTH, open loop POWER BANDWIDTH PHASE MARGIN OUTPUT VOLTAGE SWING CURRENT, peak5 CURRENT, continuous SETTLING TIME to .1% SLEW RATE CAPACITIVE LOAD RESISTANCE6, no load RESISTANCE6, 20 mA load POWER SUPPLY VOLTAGE3 CURRENT, quiescent THERMAL PA141 RESISTANCE, AC junction to case PA142 RESISTANCE, AC junction to case PA141 RESISTANCE, DC junction to case PA142 RESISTANCE, DC junction to case PA141 RESISTANCE, junction to air PA142 RESISTANCE, junction to air TEMPERATURE RANGE, case NOTES: * 1. 2. 3. 4. 5. 6. 7. TEST CONDITIONS1 MIN
PA141/PA142 TYP MAX 25 40 70 130 20 32 75 5/100 50/2000 .2/.5 .5/50 2.5/100 50/400 1011 5
UNITS mV µV/°C µV/V µV kh pA pA/V pA pF V dB µV RMS µV p-p dB MHz kHz ° V mA mA µs V/µs nF
Full temperature range
30 65/* * * * *
* * * * * * * * * *
VCM = ±90V DC 10kHz BW, RS = 1K 1-10 Hz RL = 5K CC = 10pf, 280V p-p Full temperature range IO = 40mA CC = 10pF, 10V step, AV = –10 CC = OPEN AV = +1 RCL = 0 RCL = 0 See Note 3
±VS–12 84
94 50 110 106 1.6 26 60
94
*
±VS–12 ±VS–10 120 60 12 40 10 150 25 ±50 ±150 1.6 5.4 7 9 12 30 55 –25 ±175 2.0 6.5 10 10.4 14 +85
±VS–10 ±VS–8.5 * * * * * * * * .9 * 1.4 * * * * * * * * 1.8 * * * * *
V mA °C/W °C/W °C/W °C/W °C/.