AOM Driver
A35-Series
5 Watt RF Drivers for
Acousto-Optic Modulators

The A35xxx RF driver series provides up to5 Watt output power. Various types cover afrequency range from 40 to 350 MHz.

Key Features:

The maximum RF output power is adjustableby an internal potentiometer. The analogue
modulation voltage controls the output powerfrom 0 to 100% of the adjusted maximumpower.

 RF output power 5 Watt

Additionally to the analogue modulation
voltage a digital modulation control signal canswitch on and off the RF power. An operation
scheme below (page 5) illustrates theinteraction of the two modulation signals indetail.
Both the analogue and digital modulation arecharacterized by extraordinary on/off ratios ofat least 65dB.
The driver can be operated with modulation
frequencies (analogue and digital) up to 25%of the carrier frequency and 50 MHzmaximum.

 Frequency range 40 to 350 MHz
 RF on/off ratio > 65 dB
 Constant output power design
 Models with a modulation
frequency up to 50 MHz available Conductive cooling through baseplate Compact casing, fully shielded(EMC)

Applications: Fast modulation components for
extra cavity applications, e. g.
laser projection systems
 Frequency shifting

Optimum EMC shielding and mechanicalprotection is achieved by an aluminiumcasing. The base plate serves for mounting
as well as for heat dissipation.

Contact: sales@goochandhousego.com

www.goochandhousego.com

As part of our policy of continuous product improvement we reserve the right to change specifications at any time.
A35xxx_2009-12.doc

AOM Driver A35-Series | 2

Technical Data
Supply voltage+24 VDC

Supply current

typ. 1.5 A @ 5 W RF output power

Output impedancenom. 50 Ω

Maximum RF output power (adjustable)*
Adjustment range> 5 W (+37 dBm)
< 0.1 W … > 5 W

Frequency accuracy< ±25 ppm

Harmonics distortion*< -26 dBc

Analogue modulation**
Impedance
Voltage range @ 50 Ω
RF ON / OFF ratio

50 Ω
0 … +1 V> 65 dB

Digital modulation**
Impedance
Level

4.7 kΩ (pull-up)
High = ≥ 3V … 5V
Low = 0 … < 2V
> 100 dB

RF ON / OFF ratio(= RF on)(= RF off)

RF output frequency*** [MHz]40 … <80

80 … <140

140 … <200

200 … 350Analogue modulation
RF rise time / fall time
(PRF: 10 … 90%) *< 25 ns< 15 ns< 10 ns< 8 nsDigital modulation
RF rise time / fall time
(PRF: 10 … 90%) *< 25 ns< 15 ns< 10 ns< 8 ns* into 50 Ω load** other configurations on request*** standard frequencies: 40, 80, 110, 150, 200 MHz

Connectors, Dimensions, Weight, CoolingRF output connector

SMA female

Control input connector
Pins 1 and 2, inside linked
Pins 3 and 5, inside linked
Pin 4
Pin A1 (coaxial)
Pin A2 (coaxial)

D-Sub 7W2
GND (case)+Vs (24 VDC)
not connected
Analogue modulation
Digital modulation
Contact: sales@goochandhousego.com

www.goochandhousego.com

As part of our policy of continuous product improvement we reserve the right to change specifications at any time.
A35xxx_2009-12.doc

AOM Driver A35-Series | 3

CoolingConduction
The base plate must be attached to a suitable
heat sink capable of dissipating 36 Watt.

Dimensions [mm]CasingMounting flat

120 x 50 x 36 ****
120 x 70

Weight360 grams**** length x width x height

Environmental Conditions
Warm up time

10 minutes for optimum stability

Base plate temperature+10°C … +60°C
For optimum output power stability constantbase plate temperature should be provided.

Storage temperature-20°C … +70°C, non condensing

Absolute Maximum Ratings
Supply voltage max.

+26 VDC

Analogue modulation
Voltage range @ 0 … +1 V

-0.5 V … +1.1 V

Digital modulation
Level-0.5 V … +5.5 V

Maximum operating temperature+65°C base plate temperature

Quality Standards
EU 2002/95/EC (RoHS)

compliant

EMC standards

VDE 0871-B
FCC Rules Part 15-B

Thermal test

2h @ 70°C passive

Burn-in test

30 minutes @ maximum RF power output

Contact: sales@goochandhousego.com

www.goochandhousego.com

As part of our policy of continuous product improvement we reserve the right to change specifications at any time.
A35xxx_2009-12.doc

AOM Driver A35-Series | 4

Outline Drawings
Dimensions in mm

RF-OUT

436

Control Input

Ø 3.3

70

Gooch & Housego

5060

Power adj.
(Deutschland)GmbH
Typ: A 35xxx-xx
S/N: xxx-xxx
RoHS 2002/95/EC

110
120

Control Input
A2A1251
4

1, 2 GND (case) inside linked

A1Analogue modulation

3, 5 +Us (24VDC) inside linked

A2Digital modulation34

not connected

Contact: sales@goochandhousego.com

www.goochandhousego.com

As part of our policy of continuous product improvement we reserve the right to change specifications at any time.
A35xxx_2009-12.doc

AOM Driver A35-Series | 5Operation Scheme of Analogue and Digital Modulation
Analogue
Modulation
ModeDigital
Modulation
Mode

Combined
Modulation
Mode

InputsAnalogue Modulation(normalized)
Digital Modulation
OutputRF Power outUt

Variants List / Ordering Codes

A35-S-1/50-p4k7u
Frequency[MHz]040080
110
150200350

40.080.0
110.0
150.0
200.0
350.0

Other frequencies and customized versions are available on request.

Accessories
Connector Kit
for AOM Driver Series A35xxx and A36xxx

Part-No. 508A00169

Contact: sales@goochandhousego.com

www.goochandhousego.com

As part of our policy of continuous product improvement we reserve the right to change specifications at any time.
A35xxx_2009-12.doc