기기명 (Instrument) : Programmable Current Amplifier (전류 증폭기)
제작회사 (Manufacturer) : KEITHLEY (키슬리)
형식 (Model) : 428
세부내용 (Description) :
Product Overview
The Keithley 428-PROG Programmable Current Amplifier converts fast, small currents to a voltage, which can be easily digitized or displayed by an oscilloscope, waveform analyzer, or data acquisitionsystem. It uses a sophisticated "feedback current" circuit to achieve both fast rise times and sub-picoamp noise. The gain of the Keithley 428-PROG is adjustable in decade increments from 103V/A to 1011V/A, with selectable rise times from 2μs to 300ms.
Features and Specifications of the Keithley 428-PROG Programmable Current Amplifier include:
· Applications in research and device labs due to its cost-effective ability to amplify fast, low currents, incude:
o Biochemistry Measurements: Ion channel currents through cell walls and membranes
o Beam Position Monitoring: Used on electron storage rings and synchrotrons
o Surface Science Studies:
§ Scanning Tunneling Electron Microscope system amplifier
§ Observation of secondary electron emission, as in X-ray and beam line currents
o Laser and Light Measurements:
§ Fast, sensitive amplifier for use with PMTs and photodiodes
§ Analysis of fast photoconductive materials
§ IR detector amplifier
o Transient Phenomena:
§ Current DLTS studies
§ Breakdown in devices and dielectric materials
· Can be connected to an oscilloscope or waveform digitizer to display very low currents in real time
· Offers fast response at low current levels
· Nine current amplification ranges allow the greatest flexibility in making speed/noise tradeoffs
· Can be used with any of Keithley’s data acquisition boards to implement a very cost-effective, low current measurement system with wide bandwidth and fast response
· Incorporates a second order Bessel-function filter that minimizes noise without increasing rise time on high-gain ranges
· Input and output connections are made with BNC connectors:
o INPUT HI is connected to a programmable ±5V supply
o Permits suitable bias voltages to be applied to devices-under-test or current collectors
o This eliminates the need for a separate bias supply
· Exterior design incorporates:
o Front panel operation
o Pushbutton controls have an LED to indicate if that function is activated
o Display features three selectable intensities (bright, dim, and off) for use in light-sensitive environments
o All setup values can be displayed from the front panel
· 2μs rise time
· 1.2fA rms noise
· Up to 10^11 V/A gain
· IEEE-488 interface
첨부 (Attach)
파일내용 (The content of file) :
-. Data Sheet (데이터시트) :
-. Technical Document (기술문서) :
-. Quick Reference Guide (빠른 참조 가이드) :
-. Intruction Manual (사용설명서) :
사진 (Picture) :
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