Keithley 4200-SCS User Manual

4200-900-01 Rev. K / February 2017 Return to Section Topics 1-27
Model 4200-SCS User’s Manual Section 1: Getting Started
Figure 1-24
3-port power divider
Using an RBT and power divider
Figure 1-25 shows a block diagram of the pulse IV (PIV) test system that uses two SMUs, a pulse
generator card (one channel), a scope card (both channels), two RBTs, and the power divider.
The power divider provides impedance matching; an RBT functions as a coupler for DC bias from
a SMU, and pulse output (AC) from a pulse generator card. The output of an RBT provides pulse
output that rides on the DC bias level. The scope card is used to capture pulse waveforms or pulse
readings. The DUT is typically a wafer site (using prober) or a discrete device.
The capacitor for an RBT functions as a low-impedance component for high-speed pulses, and as
a high-impedance element for DC. This allows the high-speed pulses from the pulse generator
card to pass through to the output, while blocking DC from the SMU.
The inductors of an RBT function as low-impedance components for DC, and as high-impedance
components for high-speed pulses. This allows the DC bias from the SMU to pass through to the
output, while blocking the high-speed pulses from the pulse generator.
Figure 1-25
Block diagram of a PIV test system
3-Port
Power
Divider
SMA Male
Connect Directly
to RBT
(AC Input)
S
1
2
SMA Female
Connect to Pulse
Generator Card
Connect to
Scope Card
16.67W
16.67W
16.67W
4200-SMU (1)
4200-SMU (2)
Scope Card
Pulse Generator
Card
DC Bias and Measure
4205-RBT
(1)
4205-RBT
(2)
V
g
Channel 1
Channel 1
Output
V
DD
Trigger
AC+DC
Output
V
d
Channel 2
AC+DC
Output
Channel 2
(Not Used)
3-port
Power
Divider
1
2
S
AC
Input
DC
Input
AC
Input
DC
Input

Keithley 4200-SCS Specifications

General

Brand	Keithley
Model	4200-SCS
Category	Semiconductors
Language	English