INTRODUCTION
The AVR-EB2A-B is a high performance, GPIB and RS232-equipped pulse generator
used for measuring the reverse recovery time of high-speed, low-current signal diodes.
The AVR-EB2A-B generates a forward DC bias current of +10 to +100 mA. A 200 ns
wide negative pulse is superimposed onto the signal, to generate reverse currents of up
to -100 mA.
The 10%-90% switching time for the positive to negative transition is much less than
500 ps (typically 300 ps), measured at the input to the test jig. The jig and the
inductance and switching dynamic of the device under test (DUT) degrade this to
approximately 750 ps typically, measured at the output of the jig.
The waveforms generated by this instrument are generally suitable for MIL-STD-750E
Method 4031.4 Test Condition A tests. The basic test arrangement is shown below:
AVTECH
AVR-EB2A-B
MAINFRAME
OUT
SYNC
CONTROL
AVX-CA TEST JIG
EXT TRIG
V
PULSE
,
-24V MAXIMUM
0V
VOLTAGE PULSE
CURRENT THROUGH DUT (I
DUT
)
CONTROL
IN
I
R
, -100 mA MAX.
0 mA
I
F
, +100 mA MAX.
REVERSE
RECOVERY
TIME (t
RR
)
DUT
I
DUT
2 meter
DB-9
CABLE
V
PULSE
, up
to -24V
Up to
+115V
V
DC
Other signals ...
Other signals ...
R
DC
= 950Ω
V
SCOPE
= I
DUT
× 50Ω / 10
OSCILLOSCOPE
(BW > 1 GHz)
CH A
R
SCOPE
= 50Ω
20 dB
ATTENUATOR
(USE SUPPLIED
SMA-BNC
ADAPTER, IF
REQUIRED)
R
PULSE
= 50Ω
V
OUT
= I
DUT
× 50Ω
200 ns
I
F
≈ (V
DC
– V
DIODE
) / 1 kΩ
I
R
≈ I
F
+ V
PULSE
/ 100 Ω
60 cm
SMA-to-SMA
COAXIAL
CABLE
OUT
60 cm
SMA-to-SMA
COAXIAL
CABLE
6
Summary of Contents for AVR-EB2A-B
Page 44: ...The installed DUT is shown below 44 ...
Page 46: ...The installed DUT is shown below 46 ...
Page 48: ...It is still below 300 ps at 10 mA 10 mA as well 48 ...
Page 56: ...PCB 158R4 LOW VOLTAGE POWER SUPPLY ...
Page 65: ...TEST JIG WIRING AVX CA AXPOST ...
Page 67: ...TEST JIG WIRING AVX CA SOD123 QTKA ...
Page 69: ...TEST JIG WIRING AVX CA SOT23B ...
Page 70: ...CUSTOMIZED DAUGHTERBOARD AVX CA SOT23B ...
Page 71: ...PERFORMANCE CHECK SHEET 71 ...