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Details, datasheet, quote on part number:PA85
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| Part: | PA85 |
| Category: | Analog & Mixed-Signal Processing => Amplifiers => Audio/Power Amplifiers |
| Description: | High Voltage Power Operational Amplifier |
| Company: | Apex Microtechnology Corporation |
| Datasheet: | Download PA85 datasheet File size : 61 kB |
| Request For quote: | Find where to buy PA85
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Datasheet text preview:
HIGH VOLTAGE POWER OPERATIONAL AMPLIFIERS
PA85 · PA85A
MICROTECHNOLOGY
HTTP://WWW.APEXMICROTECH.COM
(800) 546-APEX
(800) 546-2739
FEATURES
· HIGH VOLTAGE -- 450V (±225V) · HIGH SLEW RATE -- 1000V/µS · HIGH OUTPUT CURRENT -- 200mA
APPLICATIONS
· · · · HIGH VOLTAGE INSTRUMENTATION PIEZO TRANSDUCER EXCITATION PROGRAMMABLE POWER SUPPLIES UP TO 430V ELECTROSTATIC TRANSDUCERS & DEFLECTION
PATENTED
TYPICAL APPLICATION
Dynamic focusing is the active correction of focusing voltage as a beam traverses the face of a CRT. This is necessary in high resolution flat face monitors since the distance between cathode and screen varies as the beam moves from the center of the screen to the edges. PA85 lends itself well to this function since it can be connected as a summing amplifier with inputs from the nominal focus potential and the dynamic correction. The nominal might be derived from a potentiometer, or perhaps automatic focusing circuitry might be used to generate this potential. The dynamic correction is generated from the sweep voltages by calculating the distance of the beam from the center of the display.
DC FOCUS X SWEEP SAMPLE z = x2 + y2 Y SWEEP SAMPLE R IN2 PA85 TO FOCUS GRID R IN1 RF +225V
DESCRIPTION
The PA85 is a high voltage, high power bandwidth MOSFET operational amplifier designed for output currents up to 200mA. Output voltages can swing up to ±215V with a dual supply and up to +440 volts with a single supply. The safe operating area (SOA) has no second breakdown limitations and can be observed with all types of loads by choosing an appropriate current limiting resistor. High accuracy is achieved with a cascode input circuit configuration. All internal biasing is referenced to a bootstrapped zener-MOSFET current source. As a result, the PA85 features an unprecedented supply range and excellent supply rejection. The MOSFET output stage is biased on for linear operation. External compensation provides user flexibility. This hybrid circuit utilizes thick film (cermet) resistors, ceramic capacitors and silicon semiconductor chips to maximize reliability, minimize size and give top performance. Ultrasonically bonded aluminum wires provide reliable interconnections at all operating temperatures. The 8-pin TO-3 package is hermetically sealed and electrically isolated. The use of compressible isolation washers voids the warranty.
R
CL
225V
EQUIVALENT SCHEMATIC
D1 Q1 Q2 Q4 D23 COMP 7 8 Q12 Q6 IN 5 Q10A Q10B Q17 Q18 Q13 Q16 D2 VS 6 Q7 +IN 4 Q11 1 OUT Q9 CL 2 3 +VS
EXTERNAL CONNECTIONS
+Vs CL RCL
Q8
3
2 1 OUT
+IN 4 TOP VIEW IN
PHASE COMPENSATION Gain CC RC 1 68pF 100 20 10pF 330 100 3.3pF 0 CC RATED FOR FULL SUPPLY VOLTAGE
5 6
Vs
8 7
COMP
COMP CC
RC
APEX MICROTECHNOLOGY CORPORATION · TELEPHONE (520) 690-8600 · FAX (520) 888-3329 · ORDERS (520) 690-8601 · EMAIL prodlit@apexmicrotech.com
PA85 · PA85A
ABSOLUTE MAXIMUM RATINGS
SUPPLY VOLTAGE, +VS to VS OUTPUT CURRENT, continuous within SOA POWER DISSIPATION, continuous @ TC = 25°C2 INPUT VOLTAGE, differential INPUT VOLTAGE, common mode TEMPERATURE, pin solder - 10s max TEMPERATURE, junction2 TEMPERATURE, storage OPERATING TEMPERATURE RANGE, case PA85 TEST CONDITIONS
1
ABSOLUTE MAXIMUM RATINGS SPECIFICATIONS
450V 200mA 30W ± 25V ± VS 300°C 150°C 65 to +150°C 55 to +125°C PA85A
SPECIFICATIONS
PARAMETER INPUT OFFSET VOLTAGE, initial OFFSET VOLTAGE, vs. temperature OFFSET VOLTAGE, vs. supply OFFSET VOLTAGE, vs. time BIAS CURRENT, initial3 BIAS CURRENT, vs. supply OFFSET CURRENT, initial3 INPUT IMPEDANCE, DC INPUT CAPACITANCE COMMON MODE VOLTAGE RANGE4 COMMON MODE REJECTION, DC NOISE GAIN OPEN LOOP, @ 15Hz RL = 2K, CC = OPEN GAIN BANDWIDTH PRODUCT at 1MHz RL = 2K, CC = 3.3pf POWER BANDWIDTH CC = 10pf CC = 3.3pf PHASE MARGIN Full temperature range OUTPUT VOLTAGE SWING4 VOLTAGE SWING4 VOLTAGE SWING4 CURRENT, continuous SLEW RATE, AV = 20 SLEW RATE, AV = 100 CAPACITIVE LOAD, AV = +1 SETTLING TIME to .1% RESISTANCE, no load POWER SUPPLY VOLTAGE6 CURRENT, quiescent THERMAL RESISTANCE, AC, junction to case5 RESISTANCE, DC, junction to case RESISTANCE, junction to air TEMPERATURE RANGE, case NOTES: * 1. 2. 3. 4. 5. 6. Full temperature range, F > 60Hz Full temperature range, F < 60Hz Full temperature range Meets full range specifications Full temperature range ± 15 IO = ±200mA IO = ±75mA IO = ±20mA TC = 85°C CC = 10pf CC = OPEN Full temperature range CC = 10pf, 2V step RCL = 0 96 Full temperature range MIN
TYP
MAX
MIN
TYP
MAX
UNITS
VCM = ±90V 100kHz BW, RS = 1K, CC = 10pf
± VS12 90
.5 10 3 75 5 .01 10 1011 4 110 1 111 100 300 500 60
2 30 10 50 100 * *
.25 5 * * 3 * 3 * * * * * * * * * * * * * * *
.5 10 * 10 30
mV µV/°C µV/V µV/kh pA pA/V pA pF V dB µVrms dB MHz kHz kHz ° V V V mA V/µs V/µs pf µs V mA °C/W °C/W °C/W °C
*
± Vs10 ±Vs6.5 ± V8.5 ±Vs6.0 ± V8.0 ±Vs5.5 ± 200 400 1000 470 1 50 ± 150 21 ± 225 25 2.5 4.2 30 25 +85
* * * 700 *
* * *
*
* *
* * * *
* * *
The specification of PA85A is identical to the specification for PA85 in applicable column to the left. Unless otherwise noted: TC = 25°C, compensation = CC = 68pF, RC = 100. 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. Ratings apply only to output transistors. An additional 10W may be dissipated due to quiescent power. Doubles for every 10°C of temperature increase. +VS and VS denote the positive and negative power supply rail respectively. Rating applies if the output current alternates between both output transistors at a rate faster than 60Hz. Derate max supply rating .625 V/°C below 25°C case. No derating needed above 25°C case. The PA85 is constructed from MOSFET transistors. ESD handling procedures must be observed. The internal substrate contains beryllia (BeO). Do not break the seal. If accidentally broken, 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
PA85 · PA85A
PHASE RESPONSE
0 45
OUTPUT STAGE INTERNAL POWER DISSIPATION, P(W)
40 32
POWER DERATING
NORMALIZED QUIESCENT CURRENT, I Q (X)
QUIESCENT CURRENT
1.20 1.15 1.10
TC= 125 °C
C
PHASE, (°)
24 16 8 0 0 25 50 75 100 125 150 CASE TEMPERATURE, TC (°C)
90 135 180 225 270 .2M
C C = 68pF C C = 10pF
1.05 1.00 .95 .90
TC = 25°
TC = 55°C
C C = 3.3pF 1M 10M FREQUENCY F (Hz) 40M
200 0 100 300 400 450 TOTAL SUPPLY VOLTAGE, VS (V)
120
SMALL SIGNAL RESPONSE
VOLTAGE DROP FROM SUPPLY, V S VO (V)
10 9
OUTPUT VOLTAGE SWING
500
POWER RESPONSE
OUTPUT VOLTAGE, VO (VPP )
OPEN LOOP GAIN, A (dB)
100 80 60 40 20 0 C C = 68pF C C = 10pF C C = 3.3pF
8
12
5°
250
C
CC =3
CC
=
.3p
T
C
=1
7 6 5 4 0 100 200 250 OUTPUT CURRENT, I O (mA)
TC C = 25°
55°C TC =
125 100 75 50
f
R L = 2K 25 50K 100K 200K 500K 1M 2M FREQUENCY, F (Hz) 5M
CC =6 8p f
0p f
20 10
100 1K 10K .1M 1M 10M 20M FREQUENCY, F (Hz)
INPUT NOISE VOLTAGE, VN (nV/ Hz)
SLEW RATE
1000 .05 .03
HARMONIC DISTORTION
AV = 30 PO = 15W CC = 10pf RL = 1K
20 15 10 7 5
INPUT NOISE VOLTAGE
SLEW RATE, (V/ µ S)
500
DISTORTION, (%)
.01 .005 .003
200
3 2 10
100 0 60 15 45 90 30 75 EXT. COMPENSATION CAPACITOR, C C (pF)
.001 10
100 1K 10K FREQUENCY, F (Hz)
100K
1K 100 10K FREQUENCY, F (Hz)
100K
COMMON MODE REJECTION, CMR (dB)
140 C C = 10pF 120 100 80 60 40 20 1K
POWER SUPPLY REJECTION, PSR (dB)
COMMON MODE REJECTION
POWER SUPPLY REJECTION
140 120 100 80 60 40 20 1 10 100 1K 10K .1M FREQUENCY, F (Hz) 1M 500
CURRENT LIMIT
CURRENT LIMIT, I LIM (mA)
300 200
100
50
20 1 2 20 30 5 10 RESISTOR VALUE, R CL ( )
100K 1M 10K FREQUENCY, F (Hz)
10M
APEX MICROTECHNOLOGY CORPORATION · TELEPHONE (520) 690-8600 · FAX (520) 888-3329 · ORDERS (520) 690-8601 · EMAIL prodlit@apexmicrotech.com
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