DDF2311 APITECH | Alldatasheet
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www.SpectrumMicrowave.com METAL WELDED PACKAGE DDF2311 DDF3311 DDF4311 2-, 3- & 4-CHANNEL 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. Vee 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 Vee so that the negative output current varies directly with Vee. 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 AX
645 M AX
(– 5V to – 15V) N/C N/C DDF2311 XXXX TOP VIEW +5V
500 M IN TYP
0.050 0.038 125 M AX 010 ± 002
500 M IN
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 VIEW 150 M AX 067 0.050