Spectrum Microwave

Tel: 508-485-6350 Fax: 508-485-5168

165 Cedar Hill Street, Marlborough, Ma 01752

www.SpectrumMicrowave.com

METAL WELDED PACKAGE

DDF2311

DDF3311

DDF4311

M ultiple independent high-speed drivers with

300 mA peak current spikes.

1. Inputs are non-inverting when M ode control has a

logic high input.

2. Inputs are inverting when M ode control has a logic

low input.

3. To increase switching spike currents, add a capacitor

of up to 560 pF between the output and TP pins.

4. M ode control and input pins are interchangeable

within any one channel.

5. W hen driving anode-grounded diodes, excessive

power dissipation must be avoided. V ee should be

limited to -8V with -5V recommended.

6. The DDF2311/3311/4311 do not have a true current

source output. Instead the output is connected to

a 380-ohm resistor in parallel with a 560 pF capacitor

and the driven end of this RC combination is

switched between +4V and V ee so that the negative

output current varies directly with V ee.

TP

Output

NC

Non-Inverting Input

Ground

M ode #1

M ode #2

Input #2

NC

Output #2

TP

1

22

11

12

395

M A X

645 M A X

(– 5V to

– 15V )

N/C

N/C

DDF2311

XXXX

TOP V IEW

+5V

500 M IN TY P

Pkg

Bottom

0.050

0.038

125

M A X

010 ± 002

500 M IN

TY P

015

645

SQ

M A X

1

22

11

12

Ground

Input #1

M ode Control #1

Input #2

M ode Control #2

Input #3

M ode Control #3

Input #4

M ode Control #4

+5V

Ground

TP1

Output #1

TP2

Output #2

N/C

TP3

Output #3

TP4

Output #4

N/C

+12V

DDF3311/4311

XXXX

TOP V IEW

150

M A X