Preamplifiers' specification

Description

The VPDC and VPAC is the DC or AC coupled transimpedance preamplifiers. The Parameters of preamlifiers are optimized for 3 approximated detector resistance ranges. When is less than 100 Ω, between 100 Ω and 10 kΩ, more than 5 kΩ.
Device is closed in stand alone enclosure or integrated inside heat sink with detector.

Specification

		RD≤ 100 Ω
Model	Bandwidth [MHz]	Transimp. [KΩ]	Eq. Input Noise [pA/√Hz]	CD max [pF]
VPAC 0.1 VPDC 0.1	0.1	100	5	1000
VPAC 0.3 VPDC 0.3	0.3	100	5	1000
VPAC 1 VPDC 1	1	100	5	1000
VPAC 5 VPDC 5	5	24	6.5	250
VPAC 10 VPDC 10	10	10	7	100
VPAC 20 VPDC 20	20	5	8	50
VPAC 50 VPDC 50	50	5	10	25
VPAC 100 VPDC 100	100	5	10	10
VPAC 250 VPDC 250	250	5	10	5

		100 Ω ≥ RD≤ 10 KΩ
Model	Bandwidth [MHz]	Transimp. [KΩ]	Eq. Input Noise [pA/√Hz]	CD max [pF]
VPAC 0.1 VPDC 0.1	0.1	100	3	1000
VPAC 0.3 VPDC 0.3	0.3	100	3	1000
VPAC 1 VPDC 1	1	100	3	1000
VPAC 5 VPDC 5	5	50	3.5	250
VPAC 10 VPDC 10	10	30	4	100
VPAC 20 VPDC 20	20	20	4	50
VPAC 50 VPDC 50	50	10	4.5	25
VPAC 100 VPDC 100	100	10	5	10
VPAC 250 VPDC 250	250	10	5	5

		RD≥ 5 KΩ
Model	Bandwidth [MHz]	Transimp. [KΩ]	Eq. Input Noise [pA/√Hz]	CD max [pF]
VPAC 0.1 VPDC 0.1	0.1	1000	0.3	100
VPAC 0.3 VPDC 0.3	0.3	1000	0.3	100
VPAC 1 VPDC 1	1	1000	0.5	50
VPAC 5 VPDC 5	5	300	0.6	20
VPAC 10 VPDC 10	10	200	0.8	15
VPAC 20 VPDC 20	20	100	1	8
VPAC 50 VPDC 50	50
VPAC 100 VPDC 100	100
VPAC 250 VPDC 250	250

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