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FEATURES
• A UNIQUE (Patent Pending) TECHNIQUE FOR VERY
LOW QUIESCENT CURRENT < 1 mA
• OVER 350 V/µS SLEW RATE
• WIDE SUPPLY VOLTAGE
• SINGLE SUPPLY: 10V to 200V
• SPLIT SUPPLIES: +/- 10V to +/- 100V
• OUTPUT CURRENT- 150mA cont. ; 200mA Pk
• UP TO 23 WATT DISSIPATION CAPABILITY
• OVER 300 kHz POWER BANDWIDTH
APPLICATIONS
• PIEZOELECTRIC POSITIONING AND ACTUATION
• ELECTROSTATIC DEFLECTION
• DEFORMABLE MIRROR ACTUATORS
• CHEMICAL AND BIOLOGICAL STIMULATORS
12-Pin SIP
PACKAGE STYLE EU
LEAD FORM EW
TYPICAL APPLICATION
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DESCRIPTION
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The PA86 is a high voltage, high speed Precision IC power
op amp with performance and unique features not found previously in any commercially available OpAmp .
Novel input stage design of this amplifier provides extremely
high slew rates in pulse applications while maintaining low
quiescent current of under 1mA. This novel input stage also
has the effect of adding variables to the power response and
slew rate characteristics of the amplifier. To a lesser degree,
there are also input related effects on open loop gain and
phase. It is important to note that slew rate for the PA86 is
independent of supply current. However the slew rate is a
strong function of input voltage amplitude. It should be noted
that the package tab needs to be connected to a stable
reference such as GND for high slew rates. Please refer
to special considerations section for details.
The output stages are well protected with user defined
current limit although the Safe Operating Area (SOA) must
be observed for reliable protection. Proper heatsinking is
required for maintaining maximum reliability. External phase
compensation provides the user with great flexibility in trading
gain, stability and bandwidth.
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The PA86 is ideally suited to driving continuous drop ink jet
systems, in both piezo actuation and deflection applications.
The deflection amplifier shown above achieves accurate droplet
displacement at high speeds to deposit crisp, clear lot code
information on product containers. The external compensation
networks have been optimized to match the gain of the circuit
and the complex impedance of the load. The combination of
high voltage and high speed allow repeatable low cost deflection of droplets for high production environments.
EXTERNAL CONNECTIONS - EU Package
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APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL [email protected]
PA86
ABSOLUTE MAXIMUM RATINGS
SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
SUPPLY VOLTAGE, +VS to −VS
OUTPUT CURRENT, peak
POWER DISSIPATION, internal, DC
INPUT VOLTAGE, Differential
INPUT VOLTAGE, Common Mode
TEMPERATURE, pin solder, 10s
TEMPERATURE, junction2
TEMPERATURE RANGE, storage
OPERATING TEMPERATURE, case
200V
200mA, within SOA
23W
±15V
±Vs
300
150°C.
−55 to 125°C.
-40 to 125°C
SPECIFICATIONS
PARAMETER
TEST CONDITIONS1
MIN
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TYP
MAX
INPUT
OFFSET VOLTAGE
8
25
OFFSET VOLTAGE vs. temperature
0 to 125°C (Case Temperature)
-63
OFFSET VOLTAGE vs. supply
BIAS CURRENT, initial3
8.5
BIAS CURRENT vs. supply
OFFSET CURRENT, initial
12
INPUT RESISTANCE, DC
106
INPUT CAPACITANCE
COMMON MODE VOLTAGE RANGE, pos.
+VS - 2
COMMON MODE VOLTAGE RANGE, neg.
-VS + 5.5
COMMON MODE REJECTION, DC
90
NOISE
1MHz bandwidth, 1kΩRS
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GAIN
OPEN LOOP @ 15Hz
GAIN BANDWIDTH PRODUCT @ 1MHz
PHASE MARGIN
Full temperature range
IM
UNITS
mV
µV/°C
µV/V
pA
pA/V
pA
Ω
pF
V
V
dB
µV RMS
120
1
50
dB
MHz
°
OUTPUT
VOLTAGE SWING
IO = 10mA
|VS| - 2
VOLTAGE SWING
IO = 150mA |VS| - 10
CURRENT, continuous, DC
150
SLEW RATE
Package Tab connected to GND
350
SETTLING TIME, to 0.1%
2V Step
TBD
POWER BANDWIDTH, 200VP-P
+VS = 100V, −VS = -100V
300
V
V
mA
V/µS
µS
kHz
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POWER SUPPLY
VOLTAGE
±10
CURRENT, quiescent
0.7
±100
2.5
THERMAL
RESISTANCE, AC, junction to case5
Full temperature range, f ≥ 60Hz
RESISTANCE, DC, junction to case
Full temperature range, f < 60Hz
5.5
RESISTANCE, junction to air
Full temperature range
TEMPERATURE RANGE, case
−40
85
V
mA
°C/W
°C/W
°C/W
°C
NOTES: 1. Unless otherwise noted: TC = 25°C, DC input specifications are ± value given, power supply voltage is typical rating.
2. Long term operation at the maximum junction temperature will result in reduced product life. Derate power dissipation to achieve
high MTTF.
3. Doubles for every 10oC of temperature increase.
4. +VS and –VS denote the positive and negative supply voltages yo the output stage.
5. Rating applies if output current alternates between both output transistors at a rate faster than 60Hz.
APEX MICROTECHNOLOGY CORPORATION • 5980 NORTH SHANNON ROAD • TUCSON, ARIZONA 85741 • USA • APPLICATIONS HOTLINE: 1 (800) 546-2739
PA86
TYPICAL PERFORMANCE
GRAPHS
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APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL [email protected]
OPERATING
CONSIDERATIONS
PA86
GENERAL
POWER SUPPLY BYPASSING
Please read Application Note 1 “General Operating Considerations” which covers stability, power supplies, heat sinking,
mounting, current limit, SOA interpretation, and specification
interpretation. Visit www.apexmicrotech.com for design tools
that help automate tasks such as calculations for stability,
internal power dissipation, current limit, heat sink selection,
Apex’s complete Application Notes library, Technical Seminar
Workbook and Evaluation Kits.
Bypass capacitors to power supply terminals +Vs and –Vs
must be connected physically close to the pins to prevent local parasitic oscillation in the output stage of the PA86. Use
electrolytic capacitors at least 1μF. Bypass the electrolytic
capacitors with high quality ceramic capacitors (X7R) 0.1μF
or greater.
SPECIAL CONSIDERATIONS
It is very important to realize that in order to achieve
high frequency performance the heat sink tab has to be
tied to a stable, low impedance reference, i.e. power supply or GND. An AC connection through a 0.1µF capacitor
is also sufficient. Internal to the PA86, the heatsink tab
is electrically isolated to more than 350V . This may help
allay some electrical isolation concerns in tying the heat
sink to Vs or GND.
CURRENT LIMIT
For proper operation, the current limit resistor, Rlim, must
be connected as shown in the external connections diagram.
For maximum reliability and protection, the resistor should
be set as high as possible. The value of the resistor is calculated as follows, with Ilim in A; the maximum practical value
is 1500Ω.
Rlim = 0.7 / Ilim
SUPPLY CURRENT
The PA86 features a class A/B driver stage to drive the output
MOSFETs and an innovative input stage to achieve very high
slew rates. The supply current drawn by the PA86, even with
no load, varies with the slew rate of the output signal.
The PA86 is externally compensated and performance
can be tailored to the application. Use the graphs of small
signal response and power response as a guide. Due to the
innovative design of the PA86, two compensation networks
are required. The values of these components should be the
same to provide symmetric slew rate characteristics. The
compensation capacitor Cc must be rated at 500V working
voltage. NPO capacitors are recommended. The compensation networks CcRc must be mounted closely to the amplifier
pins x & y and z & w to avoid spurious oscillation.
The PA86 may require an external 33 pF capacitor (minimum breakdown of 200 V) between CC- (pin 3) and –Vs (pin
5) to prevent oscillations in the falling edge of the output. This
capacitor is provided with the evaluation kit. Please refer to
EK60 datasheet for details.
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SAFE OPERATING AREA
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STABILITY
The MOSFET output stage of the PA86 is not limited by
second breakdown considerations as in bipolar output stages.
Only thermal considerations and current handling capabilities
limit the SOA. The output stage is protected against transient
flyback by the parasitic body diodes of the output stage MOSFET structure. However, for protection against sustained high
energy flyback external fast-recovery diodes must be used.
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This
dataMICROTECHNOLOGY
sheet has been carefully CORPORATION
checked and is believed
to be reliable,
no responsibility
assumed for
possible inaccuracies
omissions.
All specifications HOTLINE:
are subject to1change
without
notice.
APEX
• 5980
NORTHhowever,
SHANNON
ROAD • isTUCSON,
ARIZONA
85741 •orUSA
• APPLICATIONS
(800)
546-2739
PA86U REV 3 FEBRUARY 2006 © 2006 Apex Microtechnology Corp.