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HIGH VOLTAGE POWER OPERATIONAL AMPLIFIER
PA46
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 PROGRAMMABLE IQ (5 or 50 mA MAX) LOW COST HIGH VOLTAGE OPERATION—150V HIGH SLEW RATE—27V/µs HIGH POWER—5A, 75W DISSIPATION
APPLICATIONS
• • • • MAGNETIC DEFLECTION PA AUDIO MOTOR DRIVE NOISE CANCELLATION
DESCRIPTION
The PA46 is a high power monolithic MOSFET operational amplifier that achieves performance levels unavailable even in many hybrid amplifier designs. Inputs are protected from excessive common mode and differential mode voltages as well as static discharge. 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. Class C operation with resulting low quiescent current is pin programmable. A shutdown input turns off the output stage. This circuit utilizes a beryllia oxide (BeO) substrate to minimize thermal resistance. The 10-pin power SIP package is electrically isolated.
TYPICAL APPLICATION
+80 RC
6 2 8 9
CC RCL CF YOKE –20 RD RF
VI RI
1
PA46
10 4
5
±2.5A 7µSec Retrace Horizontal Deflection Coil Amplifiers
RS
EQUIVALENT SCHEMATIC
6 +VS D1 Q24 3 SHDN Q2 Q5 Q6 Q7 Q3 Q8 D2 D4 –IN 1 2 +IN Q20 –VS 4 Q21 D7 D5 Q11 Q12 CC1 8 9 CC2 D3 Q13 Q14 Q15 Q16 Q17 Q19 7 IQ Q9 Q10 OUTPUT DRIVE 5
Horizontal deflection amplifiers require both high speed and low distortion. The speed at which current can be changed in a deflection coil is a function of the voltage available from the op amp. In this application an 80 volt power supply is used for the retrace polarity to provide a 7 µSec retrace time, half of which is required for amplifier slewing. This circuit can perform 15.75 KHz deflection in up to 50µH coils at up to 5A p-p.
EXTERNAL CONNECTIONS
RCL RC 1 –IN 2 3 4 5 6 7 IQ 8 CC1
Package: SIP02
OUTPUT
10 CURRENT SENSE
CC 9 CC2 10 ILIM
+IN SHDN –VS OUT +VS
CC is NPO rated for full suppy voltage. Phase Compensation RC Gain CC ≥10 10pF 1KΩ ≥1 68pF 1KΩ
APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL
[email protected]
PA46
ABSOLUTE MAXIMUM RATINGS
ABSOLUTE MAXIMUM RATINGS SPECIFICATIONS
SUPPLY VOLTAGE, +VS to –VS OUTPUT CURRENT, continuous within SOA POWER DISSIPATION, continuous @ TC = 25°C INPUT VOLTAGE, differential INPUT VOLTAGE, common mode TEMPERATURE, pin solder – 10 sec TEMPERATURE, junction TEMPERATURE, storage TEMPERATURE RANGE, powered (case)
150V 5A 75W ± 16 V ± VS 220°C 150°C –65 to +150°C –55 to +125°C
SPECIFICATIONS
PARAMETER INPUT OFFSET VOLTAGE, initial OFFSET VOLTAGE, vs. temperature OFFSET VOLTAGE, vs supply OFFSET VOLTAGE, vs time BIAS CURRENT, initial BIAS CURRENT, vs supply OFFSET CURRENT, initial INPUT IMPEDANCE, DC INPUT CAPACITANCE COMMON MODE, voltage range COMMON MODE REJECTION, DC NOISE, broad band GAIN OPEN LOOP at 15Hz GAIN BANDWIDTH PRODUCT @ 1MHz POWER BANDWIDTH PHASE MARGIN OUTPUT VOLTAGE SWING CURRENT, continuous SETTLING TIME to .1% SLEW RATE CAPACITIVE LOAD RESISTANCE , no load POWER SUPPLY VOLTAGE3 CURRENT, quiescent CURRENT, quiescent, class C THERMAL2 RESISTANCE, AC junction to case RESISTANCE, DC junction to case RESISTANCE, junction to air TEMPERATURE RANGE, case TEST CONDITIONS1 MIN TYP MAX UNITS
Full temperature range
5 10 8 20
10 50 15 2 100 2 200
10kHz BW, RS = 1KΩ
± VS–10 90
1011 5 106 10
mV µV/°C µV/V µV √kh pA pA/V pA Ω pF V dB µV RMS
RL = 500Ω, CC = 10pF CC = 10pF, 130V p-p, RL = 8Ω Full temp range, CC = 68pF, RL = 10Ω
94
106 4.5 66 60 ± VS–8 2 27
dB MHz kHz °
IO = 5A 10V step, AV = –10 CC = 10pF, RL = 8Ω AV = +1, CC = 68pF RCL = 0
± VS–10 5
10 150 ±15 ±50 30 ±75 50 5
V A µs V/µs nF Ω
See Note 3
V mA mA °C/W °C/W °C/W °C
F > 60Hz F < 60Hz Full temperature range Meets full range specifications
1.3 1.7 30 –25 +85
NOTES: 1. 2. 3.
Unless otherwise noted TC = 25°C, CC = 10pF, RC = 1KΩ. DC input specifications are ± value given. Power supply voltage is typical rating. Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power dissipation to achieve high MTTF. For guidance, refer to heatsink data sheet. Derate maximum supply voltage .5 V/°C below case temperature of 25°C. No derating is needed above TC = 25°C. The PA46 is constructed from MOSFET transistors. ESD handling procedures must be observed. The exposed substrate is beryllia (BeO). Do not crush, machine, or subject to temperatures in excess of 850°C to avoid generating toxic fumes.
CAUTION
APEX MICROTECHNOLOGY CORPORATION • 5980 NORTH SHANNON ROAD • TUCSON, ARIZONA 85741 • USA • APPLICATIONS HOTLINE: 1 (800) 546-2739
TYPICAL PERFORMANCE GRAPHS
PA46
NORMALIZED CURRENT LIMIT, ILIM (X)
INTERNAL POWER DISSIPATION, P(W)
POWER DERATING.