ISL43L841_14 Datasheet, PDF (6/12 Pages) Intersil Corporation – Ultra Low ON-Resistance, Low-Voltage,Single Supply, Differential 4 to 1 Analog Multiplexer

Test Circuits and Waveforms
V+
LOGIC
INPUT
0V
VA0, VB0
SWITCH
OUTPUT _0V
t_OFF
50%
t_ON
90% ^VOUT
ISL43L841
t_r < 5ns
t_f < 5ns
90%
C
V+
LOGIC
INPUT
V+
C
A0, B0
A1, A2, B1,
B2, A3, B3
INH
GND
COMA
COMB
ADD0-1
V_OUT
R_L
C_L
50Ω
35pF
Logic input waveform is inverted for switches that have the opposite
logic sense.
FIGURE 1A. INHIBIT t_ON/t_OFF MEASUREMENT POINTS
Repeat test for other switches. C_L includes fixture and stray
capacitance.
V_OUT
=
V(NO _{or NC)}
------------^R-----^L-------------
R_L + R_(ON)
FIGURE 1B. INHIBIT t_ON/t_OFF TEST CIRCUIT
V+
LOGIC
INPUT
0V
VA0, VB0
SWITCH
OUTPUT
VA3, VB3
50%
t_TRANS
V_OUT
t_r < 5ns
t_f < 5ns
90%
10%
0V
C
V+
LOGIC
INPUT
V+
C
A0, B0
A1, A2, B1,
B2, A3, B3
COMA,
COMB
ADD0-1 _{GND INH}
V_OUT
R_L
C_L
50Ω
35pF
t_TRANS
Logic input waveform is inverted for switches that have the opposite
logic sense.
Repeat test for other switches. C_L includes fixture and stray
capacitance.
V_OUT
=
V(NO _{or NC)}
------------^R-----^L-------------
R_L + R_(ON)
FIGURE 1C. ADDRESS t_TRANS MEASUREMENT POINTS
FIGURE 1D. ADDRESS t_TRANS TEST CIRCUIT
FIGURE 1. SWITCHING TIMES
V+
C
LOGIC ^OFF
INPUT
ON
SWITCH
OUTPUT
V_OUT
V+
OFF
0V
∆V_OUT
R_G
Ax, Bx
0Ω
COMA,
COMB
ADD1
V_G
ADD0 _GND
CHANNEL
SELECT
INH
LOGIC
INPUT
Q = ∆V_OUT x C_L
FIGURE 2A. Q MEASUREMENT POINTS
Repeat test for other switches.
FIGURE 2B. Q TEST CIRCUIT
FIGURE 2. CHARGE INJECTION
V_OUT
C_L
1000pF
6
FN6212.1
June 30, 2006