ISL43L841 Datasheet, PDF (7/12 Pages) Intersil Corporation – Ultra Low ON-Resistance, Low-Voltage, Single Supply, Differential 4 to 1 Analog Multiplexer

ISL43L841
Test Circuits and Waveforms (Continued)
V+
LOGIC
INPUT
0V
t_r < 5ns
t_f < 5ns
SWITCH
OUTPUT
V_OUT
0V
t_BBM
90%
C
V+
LOGIC
INPUT
V+
C
A0-A3
B0-B3
ADD0-1
COMA
COMB
V_OUT
R_L
50Ω
C_L
35pF
GND INH
FIGURE 3A. t_BBM MEASUREMENT POINTS
Repeat test for other switches. C_L includes fixture and stray
capacitance.
FIGURE 3B. t_BBM TEST CIRCUIT
FIGURE 3. BREAK-BEFORE-MAKE TIME
V+
10nF
V+
C
SIGNAL
GENERATOR
ANALYZER
R_L
Ax or Bx
ADD1
ADD0
COMx _{GND INH}
0V or V+
CHANNEL
SELECT
R_ON = V₁/100mA
V_X
100mA
Ax or Bx
0V or V+
V₁
ADD1
ADD0
COMA or
COMB _{GND INH}
CHANNEL
SELECT
Off-Isolation is measured between COM and “Off” NO terminal on
each switch.
Signal direction through switch is reversed and worst case values
are recorded.
FIGURE 4. OFF ISOLATION TEST CIRCUIT
FIGURE 5. R_ON TEST CIRCUIT
V+
C
SIGNAL
GENERATOR
A_x
COM_A
ANALYZER
0V or V+
CHANNEL
SELECT
ADD1
ADD0
COM_B
R_L
GND
B_x
INH
50Ω
N.C.
IMPEDANCE
ANALYZER
V+
C
0V or V+
Ax or Bx
ADD1
ADD0
COMA or COMB
GND INH
CHANNEL
SELECT
Crosstalk is measured between adjacent channels with one channel
ON and the other channel OFF.
Signal direction through switch is reversed and worst case values
are recorded.
FIGURE 6. CROSSTALK TEST CIRCUIT
FIGURE 7. CAPACITANCE TEST CIRCUIT
7
FN6212.1
June 30, 2006