APEX MICROTECHNOLOGY CORPORATION TELEPHONE (520) 690-8600 FAX (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
1
PRELIMINARY
TYPICAL APPLICATION
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 deflec-
tion of droplets for high production environments.
EXTERNAL CONNECTIONS - EU PACkAGE
FEATURES
A UNIQUE (Patent Pending) TECHNIQUE FOR VERY
LOW QUIESCENT CURRENT < 1 mA
OVER 350 V/S 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
DESCRIPTION
The PA86 is a high voltage, high speed Precision IC power
op amp with performance and unique features not found previ-
ously 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.
12-PIN SIP
PACkAGE STYLE EU
LEAD FORM EW
20-PIN PSOP
PACkAGE STYLE Dk
EXTERNAL CONNECTIONS - Dk PACkAGE
APEX MICROTECHNOLOGY CORPORATION 5980 NORTH SHANNON ROAD TUCSON, ARIZONA 85741 USA APPLICATIONS HOTLINE: 1 (800) 546-2739
2
PRELIMINARY
ABSOLUTE MAXIMUM RATINGS
SPECIFICATIONS
SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
SUPPLY VOLTAGE, +V
S
to -V
S
200V
OUTPUT CURRENT, peak
200mA, within SOA
POWER DISSIPATION, internal, DC
23W
INPUT VOLTAGE, Differential
15V
INPUT VOLTAGE, Common Mode
Vs
TEMPERATURE, pin solder, 10s
300
TEMPERATURE, junction
2
150C.
TEMPERATURE RANGE, storage
-55 to 125C.
OPERATING TEMPERATURE, case
-40 to 125C
PARAMETER
TEST CONDITIONS
1
MIN
TYP
MAX
UNITS
INPUT
OFFSET VOLTAGE
8
25
mV
OFFSET VOLTAGE vs. temperature
0 to 125C (Case Temperature)
-63
V/C
OFFSET VOLTAGE vs. supply
V/V
BIAS CURRENT, initial
3
8.5
pA
BIAS CURRENT vs. supply
pA/V
OFFSET CURRENT, initial
12
pA
INPUT RESISTANCE, DC
10
6
INPUT CAPACITANCE
pF
COMMON MODE VOLTAGE RANGE, pos.
+V
S
- 2
V
COMMON MODE VOLTAGE RANGE, neg.
-V
S
+ 5.5
V
COMMON MODE REJECTION, DC
90
dB
NOISE
1MHz bandwidth, 1kR
S
V RMS
GAIN
OPEN LOOP @ 15Hz
120
dB
GAIN BANDWIDTH PRODUCT @ 1MHz
1
MHz
PHASE MARGIN
Full temperature range
50
OUTPUT
VOLTAGE SWING
I
O
= 10mA
|V
S
| - 2
V
VOLTAGE SWING
I
O
= 150mA
|V
S
| - 10
V
CURRENT, continuous, DC
150
mA
SLEW RATE
Package Tab connected to GND
350
V/S
SETTLING TIME, to 0.1%
2V Step
TBD
S
POWER BANDWIDTH, 200V
P-P
+V
S
= 100V, -V
S
= -100V
300
kHz
POWER SUPPLY
VOLTAGE
10
100
V
CURRENT, quiescent
0.7
2.5
mA
THERMAL
RESISTANCE, AC, junction to case
5
Full temperature range, f 60Hz
C/W
RESISTANCE, DC, junction to case
Full temperature range, f < 60Hz
5.5
C/W
RESISTANCE, junction to air
Full temperature range
C/W
TEMPERATURE RANGE, case
-40
85
C
PA86
NOTES: 1. Unless otherwise noted: TC = 25C, 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 10
o
C of temperature increase.
4. +V
S
and V
S
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 TELEPHONE (520) 690-8600 FAX (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
3
PRELIMINARY
TYPICAL PERFORMANCE
GRAPHS
PA86
APEX MICROTECHNOLOGY CORPORATION 5980 NORTH SHANNON ROAD TUCSON, ARIZONA 85741 USA APPLICATIONS HOTLINE: 1 (800) 546-2739
4
PRELIMINARY
POWER SUPPLY BYPASSING
Bypass capacitors to power supply terminals +Vs and Vs
must be connected physically close to the pins to prevent lo-
cal parasitic oscillation in the output stage of the PA86. Use
electrolytic capacitors at least 1F. Bypass the electrolytic
capacitors with high quality ceramic capacitors (X7R) 0.1F
or greater.
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.
STABILITY
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 compensa-
tion 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 (mini-
mum 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.
GENERAL
Please read Application Note 1 "General Operating Consid-
erations" 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.
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 sup-
ply or GND. An AC connection through a 0.1F 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 calcu-
lated as follows, with Ilim in A; the maximum practical value
is 1500.
Rlim = 0.7 / Ilim
SAFE OPERATING AREA
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 MOS-
FET structure. However, for protection against sustained high
energy flyback external fast-recovery diodes must be used.
OPERATING
CONSIDERATIONS
PA86
This data sheet has been carefully checked and is believed to be reliable, however, no responsibility is assumed for possible inaccuracies or omissions. All specifications are subject to change without notice.
PA86U REV 3 FEBRUARY 2006 2006 Apex Microtechnology Corp.
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