ISL43840_06 Datasheet, PDF (9/14 Pages) Intersil Corporation – Low-Voltage, Single and Dual Supply, Dual 4 to 1 Multiplexer Analog Switch with Enable

ISL43840
Test Circuits and Waveforms (Continued)
3V
LOGIC
INPUT
0V
t_r < 20ns
t_f < 20ns
C
SWITCH
OUTPUT
V_OUT
0V
t_BBM
80%
V+
LOGIC
INPUT
V+
C
V-
C
NO0-NO3
ADD1. 2
COM
GND ENABLE
V_OUT
R_L
300Ω
C_L
35pF
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
SIGNAL
GENERATOR
ANALYZER
R_L
V+
C
V-
C
NOX
0V or V+
ADDX
COMX
ENABLE ^{0V or V+}
GND
V+
C
V-
C
R_ON = V₁/1mA
V_NX
NOX
1mA
V₁
0V or V+
ADDX
COMX
GND ^ENABLE
FIGURE 4. OFF ISOLATION TEST CIRCUIT
FIGURE 5. R_ON TEST CIRCUIT
V+
C
V-
C
SIGNAL
GENERATOR
NO_A
COM_A
ADDX
0V or V+
ANALYZER
R_L
NO_B
COM_{B GND ENABLE}
50Ω
N.C.
FIGURE 6. CROSSTALK TEST CIRCUIT
9
V+
C
V-
C
IMPEDANCE
ANALYZER
NOX
0V or V+
ADDX
COMX
GND ENABLE
FIGURE 7. CAPACITANCE TEST CIRCUIT
FN6056.2
March 13, 2006