AFL12005SY/CH - Lambda Advanced Analog

LAMBDA ADVANCED ANALOG INC. λλ

AFL12000S Series

Single Output, Hybrid - High Reliability

DC/DC Converters

DESCRIPTION FEATURES

The AFL Series of DC/DC converters feature high

power density with no derating over the full military

temperature range. This series is offered as part of

a complete family of converters providing single and

dual output voltages and operating from nominal

+28, +50, +120 or +270 volt inputs and output power

ranging from 80 to 120 watts. For applications

requiring higher output power, individual converters

can be operated in parallel. The internal current

sharing circuits assure accurate current distribution

among the paralleled converters. This series

incorporates Lambda Advanced Analog's proprietary

magnetic pulse feedback technology providing

optimum dynamic line and load regulation response.

This feedback system samples the output voltage at

the pulse width modulator fixed clock frequency,

nominally 550 KHz. Multiple converters can be

synchronized to a system clock in the 500 KHz to

700 KHz range or to the synchronization output of

one converter. Undervoltage lockout, primary and

secondary referenced inhibit, soft-start and load

fault protection are provided on all models.

These converters are hermetically packaged in two

enclosure variations, utilizing copper core pins to

minimize resistive DC losses. Three lead styles are

available, each fabricated with Lambda Advanced

Analog's rugged ceramic lead-to-package seal

assuring long term hermeticity in the most harsh

environments.

Manufactured in a facility fully qualified to MIL-PRF-

38534, these converters are available in four

screening grades to satisfy a wide range of

requirements. The CH grade is fully compliant to

the requirements of MIL-PRF-38534 for class H.

The HB grade is fully processed and screened to the

class H requirement, may not necessarily meet all of

the other MIL-PRF-38534 requirements, e.g.,

element evaluation and Periodic Inspections (PI) not

required. Both grades are tested to meet the

complete group "A" test specification over the full

military temperature range without output power

deration. Two grades with more limited screening

are also available for use in less demanding

applications. Variations in electrical, mechanical

and screening can be accommodated. Contact

Lambda Advanced Analog with specific

requirements.

nn 80 To 160 Volt Input Range

nn 5, 8, 9, 12, 15, 24 and 28 Volt Outputs

Available

nn High Power Density - up to 84 W / in3

nn Up To 120 Watt Output Power

nn Parallel Operation with Stress and Current

Sharing

nn Low Profile (0.380") Seam Welded Package

nn Ceramic Feedthru Copper Core Pins

nn High Efficiency - to 87%

nn Full Military Temperature Range

nn Continuous Short Circuit and Overload

Protection

nn Remote Sensing Terminals

nn Primary and Secondary Referenced Inhibit

Functions

nn Line Rejection > 50 dB - DC to 50 KHz

nn External Synchronization Port

nn Fault Tolerant Design

nn Dual Output Versions Available

n Standard Military Drawings Available

SPECIFICATIONS AFL120XXS

ABSOLUTE MAXIMUM RATINGS

Input Voltage -0.5V to 180V

Soldering Temperature 300°C for 10 seconds

Case Temperature Operating -55°C to +125°C

Storage -65°C to +135°C

Static Characteristics -55°C ≤ TCASE ≤ +125°C, 80V ≤ VIN ≤ 160V unless otherwise specified.

Parameter Group A

Subgroups Test Conditions Min Nom Max Unit

INPUT VOLTAGE Note 6 80 120 160 V

OUTPUT VOLTAGE AFL12005S

AFL12008S

AFL12009S

AFL12012S

AFL12015S

AFL12024S

AFL12028S

AFL12005S

AFL12008S

AFL12009S

AFL12012S

AFL12015S

AFL12024S

AFL12028S

2, 3

VIN = 120 Volts, 100% Load 4.95

7.92

8.91

11.88

14.85

23.76

27.72

4.90

7.84

8.82

11.76

14.70

23.52

27.44

5.00

8.00

9.00

12.00

15.00

24.00

28.00

5.05

8.08

9.09

12.12

15.15

24.24

28.28

5.10

8.16

9.18

12.24

15.30

24.48

28.56

OUTPUT CURRENT AFL12005S

AFL12008S

AFL12009S

AFL12012S

AFL12015S

AFL12024S

AFL12028S

VIN = 80, 120, 160 Volts - Note 6 16.0

10.0

9.0

8.0

4.0

OUTPUT POWER AFL12005S

AFL12008S

AFL12009S

AFL12012S

AFL12015S

AFL12024S

AFL12028S

Note 6 80

108

120

112

MAXIMUM CAPACITIVE LOAD Note 1 10,000 µfd

OUTPUT VOLTAGE

TEMPERATURE COEFFICIENT VIN = 120 Volts, 100% Load - Note 1, 6 -0.015 +0.015 %/°C

OUTPUT VOLTAGE REGULATION

AFL12028S Line

All Others Line

Load

1, 2, 3

No Load, 50% Load, 100% Load

VIN = 80, 120, 160 Volts -70.0

-20.0

-1.0

+70.0

+20.0

+1.0

Static Characteristics (Continued)

Parameter Group A

Subgroups Test Conditions Min Nom Max Unit

OUTPUT RIPPLE VOLTAGE

AFL12005S

AFL12008S

AFL12009S

AFL12012S

AFL12015S

AFL12024S

AFL12028S

1, 2, 3

VIN = 80, 120, 160 Volts, 100% Load,

BW = 10MHz 30

100

mVpp

INPUT CURRENT No Load

Inhibit 1

Inhibit 2

2, 3

1, 2, 3

VIN = 120 Volts

IOUT = 0

Pin 4 Shorted to Pin 2

Pin 12 Shorted to Pin 8

INPUT RIPPLE CURRENT

AFL12005S

AFL12008S

AFL12009S

AFL12012S

AFL12015S

AFL12024S

AFL12028S

1, 2, 3

VIN = 120 Volts, 100% Load, BW = 10MHz 60

mApp

CURRENT LIMIT POINT

As a percentage of full rated load 1

VOUT = 90% VNOM , VIN = 120 Volts

Note 5 115

105

125

115

140

LOAD FAULT POWER DISSIPATION

Overload or Short Circuit 1, 2, 3 VIN = 120 Volts 32 W

EFFICIENCY AFL12005S

AFL12008S

AFL12009S

AFL12012S

AFL12015S

AFL12024S

AFL12028S

1, 2, 3

VIN = 120 Volts, 100% Load 78

ENABLE INPUTS (Inhibit Function)

Converter Off

Sink Current

Converter On

Sink Current

1, 2, 3

Logical Low on Pin 4 or Pin 12

Note 1

Logical High on Pin 4 and Pin 12 - Note 9

Note 1

-0.5

2.0

0.8

100

µA

SWITCHING FREQUENCY 1, 2, 3 500 550 600 KHz

SYNCHRONIZATION INPUT

Frequency Range

Pulse Amplitude, Hi

Pulse Amplitude, Lo

Pulse Rise Time

Pulse Duty Cycle

1, 2, 3

1, 2, 3 Note 1

Note 1

500

2.0

-0.5

700

0.8

100

KHz

nSec

ISOLATION 1Input to Output or Any Pin to Case

(except Pin 3). Test @ 500VDC 100 MΩ

DEVICE WEIGHT Slight Variations with Case Style 85 gms

MTBF MIL-HDBK-217F, AIF @ TC = 40°C 300 KHrs

Dynamic Characteristics -55°C ≤ TCASE ≤ +125°C, VIN = 120 Volts unless otherwise specified.

Parameter Group A

Subgroups Test Conditions Min Nom Max Unit

LOAD TRANSIENT RESPONSE

AFL12005S Amplitude

Recovery

Amplitude

Recovery

AFL12008S Amplitude

Recovery

Amplitude

Recovery

AFL12009S Amplitude

Recovery

Amplitude

Recovery

AFL12012S Amplitude

Recovery

Amplitude

Recovery

AFL12015S Amplitude

Recovery

Amplitude

Recovery

AFL12024SAmplitude

Recovery

Amplitude

Recovery

AFL12028S Amplitude

Recovery

Amplitude

Recovery

4, 5, 6

Note 2, 8

Load Step 50% ⇔ 100%

Load Step 10% ⇔ 50%

Load Step 50% ⇔ 100%

Load Step 10% ⇔ 50%

Load Step 50% ⇔ 100%

Load Step 10% ⇔ 50%

Load Step 50% ⇔ 100%

Load Step 10% ⇔ 50%

Load Step 50% ⇔ 100%

Load Step 10% ⇔ 50%

Load Step 50% ⇔ 100%

Load Step 10% ⇔ 50%

Load Step 50% ⇔ 100%

Load Step 10% ⇔ 50%

-450

-500

-600

-750

-900

-1200

450

200

450

400

500

200

500

400

600

200

600

400

750

200

750

400

900

200

900

400

900

200

900

400

1200

200

1200

400

µSec

LINE TRANSIENT RESPONSE

Amplitude

Recovery

Note 1, 2, 3

VIN Step = 80 ⇔ 160 Volts -500 500

500 mV

µSec

TURN-ON CHARACTERISTICS

Overshoot

Delay 4, 5, 6

4, 5, 6

Note 4

Enable 1, 2 on. (Pins 4, 12 high or open) 50 75 250

120 mV

mSec

LOAD FAULT RECOVERY Same as Turn On Characteristics.

LINE REJECTION MIL-STD-461D, CS101, 30Hz to 50KHz

Note 1 50 60 dB

Notes to Specifications:

1. Parameters not 100% tested but are guaranteed to the limits specified in the table.

2. Recovery time is measured from the initiation of the transient to where VOUT has returned to within ±1% of VOUT at 50% load.

3. Line transient transition time ≥ 100 µSec.

4. Turn-on delay is measured with an input voltage rise time of between 100 and 500 volts per millisecond.

5. Current limit point is that condition of excess load causing output voltage to drop to 90% of nominal.

6. Parameter verified as part of another test.

7. All electrical tests are performed with the remote sense leads connected to the output leads at the load.

8. Load transient transition time ≥ 10 µSec.

9. Enable inputs internally pulled high. Nominal open circuit voltage ≈ 4.0VDC.

AFL12000S Case Outlines

Case X Case W

Pin Variation of Case Y

1.260 1.500

2.500

2.760

3.000 ø 0.128

0.250

1.000

Ref 0.200 Typ

Non-cum

0.050

0.220

ø 0.040

0.238 max

0.380

Max

2.975 max

712

0.050

0.220

0.250

1.000

ø 0.040

0.525

0.380

Max

2.800

0.42

Case Y Case Z

Pin Variation of Case Y

1.500 1.750

2.500

0.25 typ

1.150

0.050

0.220

712

1.750 0.375

2.00

0.250

1.000

Ref 0.200 Typ

Non-cum

ø 0.040

0.300

ø 0.140

0.238 max

0.380

Max

2.975 max

0.050

0.220

0.250

1.000

Ref

ø 0.040

0.525

0.380

Max

2.800

0.36

AFL12000S Pin Designation

Pin No. Designation

1Positive Input

2Input Return

3Case

4Enable 1

5Sync Output

6Sync Input

7Positive Output

8Output Return

9Return Sense

10 Positive Sense

11 Share

12 Enable 2

Available Screening Levels and Process Variations for AFL 12000S Series.

Requirement MIL-STD-883

Method No

Suffix ES

Suffix HB

Suffix CH

Suffix

Temperature Range -20°C to +85°C -55°C to +125°C -55°C to +125°C -55°C to +125°C

Element Evaluation MIL-H-38534

Internal Visual 2017 ¬üüü

Temperature Cycle 1010 Cond B Cond C Cond C

Constant Acceleration 2001, 500g Cond A Cond A

Burn-in 1015 96hrs @ 125°C 160hrs @ 125°C 160hrs @ 125°C

Final Electrical (Group A) MIL-PRF-38534 25°C 25°C -55, +25, +125°C -55, +25, +125°C

Seal, Fine & Gross 1014 Cond A Cond A, C Cond A, C Cond A, C

External Visual 2009 ¬üüü

¬ per Commercial Standards

Part Numbering AFL120 05 S X / CH

Model

Input Voltage

28= 28 V, 50= 50 V

120=120 V, 270= 270 V

Output Voltage

03.3= 3.3 V, 05= 5 V

08= 8 V, 09= 9 V

12= 12 V, 15= 15 V

24= 24 V, 28= 28 V

Outputs

S = Single

D = Dual

Case Style

W, X, Y, Z

Screening

– , ES

HB, CH

AFL12000S Circuit Description

Figure I. AFL Single Output Block Diagram

DC Input

Enable 1

Sync Output 5

Sync Input

Case

2Input Return

Input

Filter

Primary

Bias Supply

Control

Output

Filter

Current

Sense

Error

Amp

& Ref

Amplifier

Sense

Amplifier

+Output

+Sense

Enable 2

9-Sense

8Output Return

Circuit Operation and Application Information

The AFL series of converters employ a forward

switched mode converter topology. (refer to Figure

I.) Operation of the device is initiated when a DC

voltage whose magnitude is within the specified

input limits is applied between pins 1 and 2. If pin 4

is enabled (at a logical 1 or open) the primary bias

supply will begin generating a regulated

housekeeping voltage bringing the circuitry on the

primary side of the converter to life. A power

MOSFET is used to chop the DC input voltage into

a high frequency square wave, applying this

chopped voltage to the power transformer at the

nominal converter switching frequency. Maintaining

a DC voltage within the specified operating range at

the input assures continuous generation of the

primary bias voltage.

The switched voltage impressed on the secondary

output transformer winding is rectified and filtered to

generate the converter DC output voltage. An error

amplifier on the secondary side compares the output

voltage to a precision reference and generates an

error signal proportional to the difference. This error

signal is magnetically coupled through the feedback

transformer into the controller section of the

converter varying the pulse width of the square

wave signal driving the MOSFET, narrowing the

width if the output voltage is too high and widening it

if it is too low, thereby regulating the output voltage.

Remote Sensing

Connection of the + and - sense leads at a remotely

located load permits compensation for excessive

resistance between the converter output and the

load when their physical separation could cause

undesirable voltage drop. This connection allows

regulation to the placard voltage at the point of

application. When the remote sensing feature is not

used, the sense leads should be connected to their

respective output terminals at the converter. Figure

III. illustrates a typical remotely sensed application.

Inhibiting Converter Output

As an alternative to application and removal of the

DC voltage to the input, the user can control the

converter output by providing TTL compatible,

positive logic signals to either of two enable pins

(pin 4 or 12). The distinction between these two

signal ports is that enable 1 (pin 4) is referenced to

the input return (pin 2) while enable 2 (pin 12) is

referenced to the output return (pin 8). Thus, the

user has access to an inhibit function on either side

of the isolation barrier. Each port is internally pulled

"high" so that when not used, an open connection on

both enable pins permits normal converter

operation. When their use is desired, a logical "low"

on either port will shut the converter down.

Figure II. Enable Input Equivalent Circuit

Pin 4 or

Pin 12

1N4148 100K

290K

150K

2N3904

+5.6V

Disable

Pin 2 or

Pin 8

Internally, these ports differ slightly in their function.

In use, a low on Enable 1 completely shuts down all

circuits in the converter while a low on Enable 2

shuts down the secondary side while altering the

controller duty cycle to near zero. Externally, the

use of either port is transparent save for minor

differences in standby current. (See specification

table).

Synchronization of Multiple Converters

When operating multiple converters, system

requirements often dictate operation of the

converters at a common frequency. To

accommodate this requirement, the AFL series

converters provide both a synchronization input and

a synchronization output.

The sync input port permits synchronization of an

AFL converter to any compatible external frequency

source operating between 500 and 700 KHz. This

input signal should be referenced to the input return

and have a 10% to 90% duty cycle. Compatibility

requires transition times less than 100 ns, maximum

low level of +0.8 volts and a minimum high level of

+2.0 volts. The sync output of another converter

which has been designated as the master oscillator

provides a convenient frequency source for this

mode of operation. When external synchronization

is not required, the sync in pin should be left open

(unconnected) thereby permitting the converter to

operate at its' own internally set frequency.

The sync output signal is a continuous pulse train

set at 550 ±50 KHz, with a duty cycle of 15 ±5%.

This signal is referenced to the input return and has

been tailored to be compatible with the AFL sync

input port. Transition times are less than 100 ns and

the low level output impedance is less than 50

ohms. This signal is active when the DC input

voltage is within the specified operating range and

the converter is not inhibited. This output has

adequate drive reserve to synchronize at least five

additional converters. A typical connection is

illustrated in Figure III.

Figure III. Preferred Connection for Parallel Operation

Optional

Synchronization

Connection

Power

Input

(Other Converters)

Share Bus

AFL

- Sense

Enable 2

+ Vout

Return

+ Sense

Vin

Rtn

Case

Enable 1

Sync Out

Sync In

AFL

- Sense

Enable 2

+ Vout

Return

+ Sense

Vin

Rtn

Case

Enable 1

Sync Out

Sync In

AFL

- Sense

Enable 2

+ Vout

Return

+ Sense

Vin

Rtn

Case

Enable 1

Sync Out

Sync In

to Load

Parallel Operation — Current and Stress Sharing

Figure III. illustrates the preferred connection

scheme for operation of a set of AFL converters with

outputs operating in parallel. Use of this connection

permits equal sharing among the members of a set

where total load current exceeds the capacity of an

individual AFL. An important feature of the AFL

series operating in the parallel mode is that in

addition to sharing the current, the stress induced by

temperature will also be shared. Thus if one

member of a paralleled set is operating at a higher

case temperature, the current it provides to the load

will be reduced as compensation for the

temperature induced stress on that device.

When operating in the shared mode, it is important

that symmetry of connection be maintained as an

assurance of optimum load sharing performance.

Thus, converter outputs should be connected to the

load with equal lengths of wire of the same gauge

and sense leads from each converter should be

connected to a common physical point, preferably at

the load along with the converter output and return

leads. All converters in a paralleled set must have

their share pins connected together. This

arrangement is diagrammatically illustrated in

Figure III. showing the outputs and sense pins

connected at a star point which is located close as

possible to the load.

As a consequence of the topology utilized in the

current sharing circuit, the share pin may be used

for other functions. In applications requiring only a

single converter, the voltage appearing on the share

pin may be used as a "current monitor". The share

pin open circuit voltage is nominally +1.00v at no

load and increases linearly with increasing output

current to +2.20v at full load.

Thermal Considerations

Because of the incorporation of many innovative

technological concepts, the AFL series of converters

is capable of providing very high output power from

a package of very small volume. These magnitudes

of power density can only be obtained by combining

high circuit efficiency with effective methods of heat

removal from the die junctions. This requirement

has been effectively addressed inside the device;

but when operating at maximum loads, a significant

amount of heat will be generated and this heat must

be conducted away from the case. To maintain the

case temperature at or below the specified

maximum of 125°C, this heat must be transferred by

conduction to an appropriate heat dissipater held in

intimate contact with the converter base-plate.

Because effectiveness of this heat transfer is

dependent on the intimacy of the baseplate-heatsink

interface, it is strongly recommended that a high

thermal conductivity heat transferring medium is

inserted between the baseplate and heatsink. The

material most frequently utilized at the factory

during all testing and burn-in processes is sold

under the trade name of Sil-Pad 4001. This

particular product is an insulator but electrically

conductive versions are also available. Use of

these materials assures maximum surface contact

with the heat dissipater thereby compensating for

any minor surface variations. While other available

types of heat conductive materials and thermal

compounds provide similar effectiveness, these

alternatives are often less convenient and are

frequently messy to use.

A conservative aid to estimating the total heat sink

surface area (AHEAT SINK) required to set the maximum

case temperature rise (∆T) above ambient

temperature is given by the following expression:

A HEAT SINK ≈







−

−

∆T

P80 30

085

143

where

∆

P P Eff

OUT

= = −











Case temperature rise above ambient

Device dissipation in Watts 11

As an example, it is desired to maintain the case

temperature of an AFL12015S at ≤ +85°C while

operating in an open area whose ambient

temperature is held at a constant +25°C; then

∆T = 85 - 25 = 60°C.

If the worst case full load efficiency for this device is

83%; then the power dissipation at full load is given

( )

P=•−











=•=120 1

83 1120 0205 246

.. . W

and the required heat sink area is

A =60

80 24.6 inHEAT SINK 0.85

•









− =

−

30 71

Thus, a total heat sink surface area (including fins, if

any) of 71 in2 in this example, would limit case rise

to 60°C above ambient. A flat aluminum plate,

0.25" thick and of approximate dimension 4" by 9"

(36 in2 per side) would suffice for this application in

a still air environment. Note that to meet the criteria

in this example, both sides of the plate require

unrestricted exposure to the ambient air.

1Sil-Pad is a registered Trade Mark of Bergquist, Minneapolis, MN

Input Filter

The AFL12000S series converters incorporate a LC

input filter whose elements dominate the input load

impedance characteristic at turn-on. The input

circuit is as shown in Figure IV.

Figure IV. Input Filter Circuit

Undervoltage Lockout

A minimum voltage is required at the input of the

converter to initiate operation. This voltage is set to

75 ± 3 volts. To preclude the possibility of noise or

other variations at the input falsely initiating and

halting converter operation, a hysteresis of

approximately 4 volts is incorporated in this circuit.

Thus if the input voltage drops to 71 ± 3 volts, the

converter will shut down and remain inoperative

until the input voltage returns to ≈75 volts.

Output Voltage Adjust

In addition to permitting close voltage regulation of

remotely located loads, it is possible to utilize the

converter sense pins to incrementally increase the

output voltage over a limited range. The

adjustments made possible by this method are

intended as a means to “trim” the output to a voltage

setting for some particular application, but are not

intended to create an adjustable output converter.

These output voltage setting variations are obtained

by connecting an appropriate resistor value between

the +sense and -sense pins while connecting the -

sense pin to the output return pin as shown in Figure

V. below. The range of adjustment and

corresponding range of resistance values can be

determined by use of the following equation.

R = 100 - -.025

adj NOM

OUT NOM

•













V V

Where VNOM = device nominal output voltage, and

VOUT = desired output voltage

Finding a resistor value for a particular output

voltage, is simply a matter of substituting the

desired output voltage and the nominal device

voltage into the equation and solving for the

corresponding resistor value.

Figure V. Connection for VOUT Adjustment

Enable 2

+ Sense

- Sense

Return

+ V

out

To Load

RADJ

AFL120xxS

Note: Radj must be set ≥ 500Ω

Attempts to adjust the output voltage to a value

greater than 120% of nominal should be avoided

because of the potential of exceeding internal

component stress ratings and subsequent operation

to failure. Under no circumstance should the

external setting resistor be made less than 500Ω.

By remaining within this specified range of values,

completely safe operation fully within normal

component derating limits is assured.

Examination of the equation relating output voltage

and resistor value reveals a special benefit of the

circuit topology utilized for remote sensing of output

voltage in the AFL12000S series of converters. It is

apparent that as the resistance increases, the output

voltage approaches the nominal set value of the

device. In fact the calculated limiting value of

output voltage as the adjusting resistor becomes

very large is ≈ 25mV above nominal device voltage.

The consequence is that if the +sense connection is

unintentionally broken, an AFL120xxS has a fail-

safe output voltage of Vout + 25mV, where the

25mV is independent of the nominal output voltage.

It can be further demonstrated that in the event of

both the + and - sense connections being broken,

the output will be limited to Vout + 440mV. This 440

mV is also essentially constant independent of the

nominal output voltage.

General Application Information

The AFL12000 series of converters are capable of

providing large transient currents to user loads on

demand. Because the nominal input voltage range

in this series is relatively low, the resulting input

current demands will be correspondingly large. It is

important therefore, that the line impedance be kept

very low to prevent steady state and transient input

currents from degrading the supply voltage between

Pin 1

Pin 2

16.8uH

0.78uF

the voltage source and the converter input. In

applications requiring high static currents and large

transients, it is recommended that the input leads be

made of adequate size to minimize resistive losses,

and that a good quality capacitor of approximately

100µfd be connected directly across the input

terminals to assure an adequately low impedance at

the input terminals. Table I relates nominal

resistance values and selected wire sizes.

Table I. Nominal Resistance Of Cu Wire

Wire Size, AWG Resistance per ft

24 Ga 25.7 mΩ

22 Ga 16.2 mΩ

20 Ga 10.1 mΩ

18 Ga 6.4 mΩ

16 Ga 4.0 mΩ

14 Ga 2.5 mΩ

12 Ga 1.6 mΩ

Incorporation of a 100 µfd capacitor at the input

terminals is recommended as compensation for the

dynamic effects of the parasitic resistance of the

input cable reacting with the complex impedance of

the converter input, and to provide an energy

reservoir for transient input current requirements.

Figure VI. Problems of Parasitic Resistance in Input Leads

(See text)

Vin

Rtn

Case

Enable 1

Sync Out

Sync In

IRtn

Iin

esource

System Ground

eRtn

100

µfd

Lambda Advanced Analog The information in this data sheet has been carefully checked and is believed to be accurate; however no

responsibility is assumed for possible errors. These specifications are subject to change without notice. 981027

LAMBDA ADVANCED ANALOG INC. λMIL-PRF-38534 Qualified

ISO9001 Registered 2270 Martin Avenue

Santa Clara CA 95050-2781

(408) 988-4930 FAX (408) 988-2702