Detector interface providing logic output for positive Hybrid PMT and negative Electron Multiplier PMTs and solid state devices to Photon Counters
30 dB to 60 dB of variable gain with optimized fixed threshold ensures no false pulses out at any gain allowing optimum detector settings. There is no need to compromise detector noise or gain or speed with other fixed gain amplifiers, and there is never any need for a noisy input linear amplifier to see even the smallest single photon signal.
High input gain allows pulse shaping input to minimize ringing and optimize timing.
32 x 32 x 48mm
1.26" cube with SMA inputs/outputs
6 VDC 217ma
Input Voltage Negative input Version Positive input Version
Minimum -300uv 300 uv
Maximum (2) -0.5V 0.5V
Output Rise/Fall Time
< 250 ps
5V PECL 100
Output Amplitudes 50 ohm load (2)
+ 600 mv Positive output, 800 mv max
-600 mv Negative output, 800 mv max
Input Amplifier IP3
Input Amplifier Chip
Noise Factor (NF) 0.5 db to 500 MHz 0.6 db to 1GHz
Gain: 22db @ 400 MHz 16db @ 1 GHz
Less than 4 mv pp
No false logic pulses at any gain
Input Limit Protection
1 nf into 50 Ohms
RC = 50 ns
1 nf into 50 Ohms
Minimum Pulse width
Tested with 600 ps Hybrid PMT Pulse Width
300 ps tested from 1.5 GHz toggle
5V internal regulated
Black Anodized Aluminum Box
6V external power supply
2.1 x 5.5 mm power plug
(1) External pulse shaping attenuates the signal but allows impedance mismatches without ringing (2) The input is limited at +/-5V to prevent damage to the input amplifier, but +/-0.5V is maximum for which the input is not over driven.
The PV16 can easily extract GHz single photon events at 350V
acceleration on the Hamamatsu Hybrid R10467U-40 with -8000 Bias
illustrating the extreme noise free sensitivity. .
$250.00 with power supply and trimmer tool for a limited time TTL Output interface is available SEE TTL ONESHOT TAB $200 - P1TTL Gigahertz one output edge triggered one-shot with preset pulse width $250 - P2TTL Nanosecond output complementary TTL edge triggered one-shot with preset pulse width.