Apex PA04A, PA04 Datasheet

POWER OPERATIONAL AMPLIFIERS

MICROTECHNOLOGY

HTTP://WWW.APEXMICROTECH.COM (800) 546-APEX [phone]

FEATURES

• HIGH INTERNAL DISSIPATION — 200 WATTS

• HIGH VOLTAGE, HIGH CURRENT — 200V, 20A

• HIGH SLEW RATE — 50V/µS

• 4 WIRE CURRENT LIMIT SENSING

• LOW DISTORTION

• EXTERNAL SLEEP MODE CONTROL

• OPTIONAL BOOST VOLTAGE INPUTS

• EVALUATION KIT — SEE EK04

APPLICATIONS

• SONAR TRANSDUCER DRIVER

• LINEAR AND ROTARY MOTOR DRIVES

• YOKE/MAGNETIC FIELD EXCITATION

• PROGRAMMABLE POWER SUPPLIES TO ±95V

• AUDIO UP TO 400W

DESCRIPTION

The PA04 is a high voltage MOSFET power operational
amplifier that extends the performance limits of power ampli­fiers in slew rate and power bandwidth, while maintaining high
current and power dissipation ratings.

The PA04 is a highly flexible amplifier. The sleep mode
feature allows ultra-low quiescent current for standby opera­tion or load protection by disabling the entire amplifier. Boost
voltage inputs allow the small signal portion of the amplifier to
operate at a higher voltage than the high current output stage.
The amplifier is then biased to achieve close linear swings to
the supply rails at high currents for extra efficient operation.
External compensation tailors performance to user needs. A
four wire sense technique allows precision current limiting
without the need to consider internal or external milliohm
parasitic resistance in the output line.

The JEDEC MO-127 12-pin Power Dip™ package (see
Package Outlines) is hermetically sealed and isolated from the
internal circuits. The use of compressible thermal washers will
void product warranty.

EQUIVALENT SCHEMATIC

SLEEP

12

9

+V

BOOST

Q10

D5 D6

–IN

1

Q14 Q15

–V

Q21

BOOST

5

Q22

COMP

D1

Q5

D2
D3

Q12

+IN

2

4

COMP

3

Q20

Q17

D7
D8

Q19

Q26

+Vs

D4

D9

–Vs

8

Q13

Q18

6

PA04 • PA04A

TYPICAL APPLICATION

The high power bandwidth and high voltage output of the
PA04 allows driving sonar transducers via a resonant circuit
including the transducer and a matching transformer. The load
circuit appears resistive to the PA04. Control logic turns off the
amplifier in sleep mode.

R

R

C

C

*

PHASE COMPENSATION

Gain C

1 470pF 120Ω

>3 220pF 120Ω

≥10 100pF 120Ω

C

RATED FOR FULL SUPPLY VOLTAGE

C

*See “BOOST OPERATION” paragraph.

Q6

OUT

Q7

ULTRA-

SONIC
DRIVE

EXTERNAL CONNECTIONS

-INPUT

+INPUT

COMP

C

COMP

-V

BOOST

I

LIM

11

10

I

LIM

7

-SUPPLY

PA04

∆

USA BeO

TE949311

R

f

CONTROL

LOGIC

i

1

12

2

PA04

10

7

R

11

Sonar Transducer Driver

1
2
3

TOP

TOP

VIEW

VIEW

4
5
6

12
11
10

9
8
7

C

CL

TRANSFORMER

TUNED

SLEEP
CURRENT LIMIT
CURRENT LIMIT

+V

BOOST

*

+SUPPLY

OUTPUT

R

C

APEX MICROTECHNOLOGY CORPORATION • TELEPHONE [phone] • FAX [phone] • ORDERS [phone] • EMAIL [e-mail]

P A04 • P A04A

ABSOLUTE MAXIMUM RATINGS

SPECIFICATIONS

ABSOLUTE MAXIMUM RATINGS

SUPPLY VOLTAGE, +VS to –V
BOOST VOLTAGE SUPPLY VOLTAGE +20V

S

200V

OUTPUT CURRENT, within SOA 20A
POWER DISSIPATION, internal 200W
INPUT VOLTAGE, differential ±20V
INPUT VOLTAGE, common mode ±V
TEMPERATURE, pin solder - 10s 300°C
TEMPERATURE, junction

2

S

150°C
TEMPERATURE, storage –65 to +150°C
OPERATING TEMPERATURE RANGE, case –55 to +125°C

SPECIFICATIONS

PARAMETER TEST CONDITIONS

PA04

1

MIN TYP MAX MIN TYP MAX UNITS

PA04A

INPUT

OFFSET VOLTAGE, initial 5 10 2 5 mV
OFFSET VOLTAGE, vs. temperature Full temperature range 30 50 10 30 µV/°C
OFFSET VOLTAGE, vs. supply 15 * µV/V
OFFSET VOLTAGE, vs. power Full temperature range 30 10 µV/W
BIAS CURRENT, initial 10 50 5 20 pA
BIAS CURRENT, vs. supply .01 * pA/V
OFFSET CURRENT, initial 10 50 5 20 pA
INPUT IMPEDANCE, DC 10

11

* Ω
INPUT CAPACITANCE 13 * pF
COMMON MODE VOLTAGE RANGE Full temperature range ±VB-8 * V
COMMON MODE REJECTION, DC Full temp. range, VCM = ±20V 86 98 * * dB
INPUT NOISE 100kHz BW, RS = 1KΩ 10 * µVrms

GAIN

OPEN LOOP, @ 15Hz Full temperature range, CC = 100pF 94 102 * * dB
GAIN BANDWIDTH PRODUCT IO = 10A 2 * MHz
POWER BANDWIDTH RL = 4.5Ω, VO = 180V p-p 90 * kHz

CC = 100pF, RC = 120Ω

PHASE MARGIN Full temperature range 60 * °

OUTPUT

VOLTAGE SWING IO = 15A ±VS-8.8 ±VS-7.5 * * V
VOLTAGE SWING V
CURRENT, peak 20 * A

= Vs + 5V, IO = 20A ±VS-6.8 ±VS-5.5 * * V

BOOST

SETTLING TIME to .1% AV = 1, 10V step, RL = 4Ω 2.5 * µs
SLEW RATE AV = 10, CC = 100pF, RC = 120Ω 40 50 * V/µs
CAPACITIVE LOAD Full temperature range, AV = +1 10 * nF
RESISTANCE 2*Ω

POWER SUPPLY

VOLTAGE Full temperature range ±15 ±75 ±100 * * * V
CURRENT, quiescent, boost supply 30 40 * * mA
CURRENT, quiescent, total 70 90 * * mA
CURRENT, quiescent, total, sleep mode Full temperature range 3 5 * * mA

THERMAL

RESISTANCE, AC, junction to case

3

Full temperature range, F>60Hz .3 .4 * * °C/W
RESISTANCE, DC, junction to case Full temperature range, F<60Hz .5 .6 * * °C/W
RESISTANCE4, junction to air Full temperature range 12 * °C/W
TEMPERATURE RANGE, case Meets full range specification –25 85 * * °C

NOTES: * The specification of PA04A is identical to the specification for PA04 in applicable column to the left.

1. Unless otherwise noted: TC = 25°C, CC = 470pF, RC = 120 ohms. DC input specifications are ± value given. Power supply
voltage is typical rating. ±V

2. Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power dissipation

BOOST

= ±VS.

to achieve high MTTF. For guidance, refer to the heatsink data sheet.

3. Rating applies if the output current alternates between both output transistors at a rate faster than 60 Hz.

4. The PA04 must be used with a heatsink or the quiescent power may drive the unit to junction temperatures higher than 150°C.

CAUTION

The PA04 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.

APEX MICROTECHNOLOGY CORPORATION • 5980 NORTH SHANNON ROAD • TUCSON, ARIZONA 85741 • USA • APPLICATIONS HOTLINE: [phone]