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Details, datasheet, quote on part number:PA94
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| Part: | PA94 |
| Category: | Analog & Mixed-Signal Processing => Amplifiers => Audio/Power Amplifiers |
| Description: | High Voltage Power Operational Amplifier |
| Company: | Apex Microtechnology Corporation |
| Datasheet: | Download PA94 datasheet File size : 73 kB |
| Request For quote: | Find where to buy PA94
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Datasheet text preview:
HIGH VOLTAGE POWER OPERATIONAL AMPLIFIER
PA94
MICROTECHNOLOGY
HTTP://WWW.APEXMICROTECH.COM
(800) 546-APEX
(800) 546-2739
FEATURES
· · · · HIGH VOLTAGE -- 900V (±450V) HIGH SLEW RATE -- 500V/µS HIGH OUTPUT CURRENT -- 100mA PROGRAMMABLE CURRENT LIMIT
APPLICATIONS
· · · · HIGH VOLTAGE INSTRUMENTATION PROGRAMMABLE POWER SUPPLIES UP TO ±430V MASS SPECTROMETERS SEMICONDUCTOR MEASUREMENT EQUIPMENT
PATENT PENDING
DESCRIPTION
The PA94 is a high voltage, MOSFET operational amplifier designed as a low cost solution for driving continuous output currents up to 100mA and pulse currents up to 200mA into capacitive loads. The safe operating area (SOA) has no second breakdown limitations and can be observed for all load types by choosing an appropriate current limiting resistor. The MOSFET output stage is biased AB for linear operation. External compensation provides flexibility in choosing bandwidth and slew rate for the application. APEX's Power SIP04 package uses a minimum of board space allowing for high density circuit boards.
TYPICAL APPLICATION
Piezo positioning may be applied to the focusing of segmented mirror systems. The composite mirror may be composed of hundreds of elements, each requiring focusing under computer control. In such complex systems the PA94 reduces the costs of power supplies and cooling with its advantages of low cost and low quiescent power consumption while increasing circuit density with the SIP package.
RF +VS
EQUIVALENT SCHEMATIC
12 + VS
R1 R2
C1
R3
R IN
1
12 PIEZO DRIVE PA94 7 V OUT
Q1 Q6 Q5
Q2 6 CC2
Q3 R4 Q4 ILIM 8 Q8 Q11 R7
2 COMPUTER FOCUS COMMAND VOLTAGE 8 10 R CL
4 CC1
V S
EXTERNAL CONNECTIONS
7 OUT
PACKAGE SIP04
1 IN
R5 R8 R9
R6 Q12 Q13
IN
1
+IN
2
CC1
4
CC2 OUT Ilim
6 7 8
Vs
10
+Vs
12
2 +IN Q15 Q16
Q14 R10
Cc
RL I M
*
*
* .01µF or greater ceramic power supply bypassing required.
R11 VS 10 R12
PHASE COMPENSATION GAIN 100 50 10 CC
2.2pF 4.7pF 22pF R LIM = .7 IL I M
APEX MICROTECHNOLOGY CORPORATION · TELEPHONE (520) 690-8600 · FAX (520) 888-3329 · ORDERS (520) 690-8601 · EMAIL prodlit@apexmicrotech.com
PA94
ABSOLUTE MAXIMUM RATINGS
SUPPLY VOLTAGE, +VS to VS OUTPUT CURRENT, source, sink POWER DISSIPATION, continuous @ TC = 25°C INPUT VOLTAGE, differential INPUT VOLTAGE, common mode3 TEMPERATURE, pin solder - 10s max TEMPERATURE, junction2 TEMPERATURE, storage OPERATING TEMPERATURE RANGE, case
ABSOLUTE MAXIMUM RATINGS SPECIFICATIONS
900V 200mA, within SOA 30W ± 20V ± 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 RANGE3 COMMON MODE REJECTION, DC NOISE GAIN OPEN LOOP, @ 15Hz GAIN BANDWIDTH PRODUCT at 1MHz POWER BANDWIDTH PHASE MARGIN, Av=100 OUTPUT VOLTAGE SWING CURRENT, continuous SLEW RATE, AV = 100 SETTLING TIME to .1% RESISTANCE POWER SUPPLY VOLTAG E 5 CURRENT, quiescent total CURRENT, quiescent output stage only THERMAL RESISTANCE, AC, junction to case 4 RESISTANCE, DC, junction to case RESISTANCE, junction to air TEMPERATURE RANGE, case NOTES: 1. 2. 3. 4. 5. Full temperature range, F > 60Hz Full temperature range, F < 60Hz Full temperature range Meets full range specifications 2.5 4.2 30 25 +85 °C/W °C/W °C/W °C See note 5 ± 50 ± 300 17 ± 450 24 120 V mA µA IO = 100mA CC =2.2pF 2V step no load RL = 5K RL = 5K RL = 5K Full temperature range 94 115 140 300 60 ± VS 20 700 1 100 dB MHz kHz ° V mA V/µs µs Full temperature range .5 15 10 75 200 4 50 1011 4 98 2 5 50 25 2000 500 mV µV/°C µV/V µV/kh pA pA/V pA pF V dB µVrms TEST CONDITIONS 1 MIN TYP MAX UNITS
Unless otherwise noted: TC = 25°C, DC input specifications are ± value given. Power supply voltage is typical rating. Cc= 4.7pF. Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power dissipation to achieve high MTTF. Although supply voltages can range up to ± 450V the input pins cannot swing over this range. The input pins must be at least 30V from either supply rail but not more than 500V from either supply rail. See text for a more complete description of the common mode voltage range. 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.
CAUTION
The PA94 is constructed from MOSFET transistors. ESD handling procedures must be observed.
APEX MICROTECHNOLOGY CORPORATION · 5980 NORTH SHANNON ROAD · TUCSON, ARIZONA 85741 · USA · APPLICATIONS HOTLINE: 1 (800) 546-2739
±
± VS 24 100 500
±
Vs=± 250V SEE NOTE 3 VCM = ±90V 10KHz BW, RS = 1K
± VS 30 80
±
TYPICAL PERFORMANCE GRAPHS
PA94
PHASE RESPONSE
-90 QUIESCENT CURRENT, I(X) -120 PHASE, (°) -150 CC = 22 pF CC = 4.7pF CC = 2.2pF -180 -210 -240 1M VOLTAGE DROP FROM SUPPLY, V S VO (V) 1.08 1.04 1.00
INTERNAL POWER DISSIPATION, P(W)
30 25
POWER DERATING
QUIESCENT CURRENT
T = TC 20 15 10 5 0 0 25 50 75 100 125 TEMPERATURE, T (°C) 150 T = TA
.96 .92 .88 0
10M FREQUENCY, F (Hz)
20M
400 600 200 800 1000 TOTAL SUPPLY VOLTAGE, VS (V)
SMALL SIGNAL RESPONSE
120 OPEN LOOP GAIN, A (dB) 100 CC = 2.2pF 80 60 40 20 0 10 CC = 22 pF CC = 4.7pF
24 20 16
OUTPUT VOLTAGE SWING
1K
C
POWER RESPONSE
OUTPUT VOLTAGE, V O (VP-P)
CC
5°
T
T
C
=
C
°C 85
12
CC
=2
500
=
F .2p
=4
.7p
CC
T C=
25°
C
F
=2
200
2p
12
TC = 55°C
F
8 4 0 100 60 20 40 80 OUTPUT CURRENT, I O (mA)
100
100 1K 10K 100K 1M 10M 20M FREQUENCY, F (Hz)
50 10K
100K 1M 2M FREQUENCY, F (Hz)
CURRENT LIMIT
200 CURRENT LIMIT, I LIM (mA) 120 100 70 50 30 20 10 50 100 150 35 10 20 CURRENT LIMIT RESISTOR, RCL ( )
OUTPUT CURRENT FROM +VS OR VS, (mA)
INPUT NOISE VOLTAGE, VN (nV/Hz)
250 150 100 50
SAFE OPERATING AREA
10 0m S 0m S
= 25 °C
20
INPUT NOISE
15 10 7 5
DC
20
,T
C
DC
DC
25 15 10
,T
C
,T
=
85
C
=
°C
12
5°
C
3
5 PULSE CURVES @ 10% DUTY CYCLE MAX 2 100 200 500 1K 50 10 SUPPLY TO OUTPUT DIFFERENTIAL, VS VO (V)
100 1K 10K FREQUENCY, F (Hz)
1M
INTERNAL POWER DISSIPATION AND HEATSINK SELECTION
With the unique combination of high voltage and speed of the PA94, traditional formulas for heatsink selection will falsely lower the apparent power handling capability of this amplifier. To more accurately predict operating temperatures use Power Design1 revision 10 or higher, or use the following procedure: Find internal dissipation (PD) resulting from driving the load. Use Power Design or refer to Apex Applications Note 1, General Operating Considertaions, paragraph 7. Find total quiescent power (PDQ) by multiplying 0.024A by VSS (total supply voltage). Find output stage quiescent power (PDQOUT) by multiplying 0.00012 by VSS. Calculate a heatsink rating which will maintain the case at 85°C or lower.
Where: TC = maximum case temperature allowed TA = maximum ambient temperature encountered Calculate a heatsink rating which will maintain output transistor junctions at 150°C or lower.
RSA
=
TJ - Ta - (PD + PDQOUT) *RJC PD + PDQ
-0.1 ° C/W
Where: TJ = maximum junction temperature allowed. RJC = AC or DC thermal resistance from the specification table. Use the larger heatsink of these two calculations. Power Design is an Excel spreadsheet available free from www.apexmicrotech.com
RSA
=
Tc - Ta - 0.1°C/W PD + PDQ
APEX MICROTECHNOLOGY CORPORATION · TELEPHONE (520) 690-8600 · FAX (520) 888-3329 · ORDERS (520) 690-8601 · EMAIL prodlit@apexmicrotech.com
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