ISL43681_06 Datasheet, PDF (10/17 Pages) Intersil Corporation – Low-Voltage, Single and Dual Supply, 8 to 1 Multiplexer and Differential 4 to 1 Multiplexer

ISL43681, ISL43741
Test Circuits and Waveforms (Continued)
C
V+
C
V-
C
3V
LOGIC
INPUT
0V
VNO0
SWITCH
OUTPUT
0V
VNO_X
50%
t_TRANS
V_OUT
t_r < 20ns
t_f < 20ns
90%
10%
t_TRANS
V+
V-
C
LOGIC
INPUT
C
V+
V-
C
LOGIC
INPUT
NO0 ^{EN, LE}
NO7
NO1-NO6
ISL43681
COM
ADDA-C _{GND EN}
V_OUT
R_L
300Ω
C_L
35pF
V+
C
V-
C
NO0_x ^{EN, LE}
NO3_x
NO1_x-NO2_x
ISL43741
COM_x
ADDA-B _{GND EN}
V_OUT
R_L
300Ω
C_L
35pF
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--_R---^L--₍--_O-----_N----₎
FIGURE 1C. ADDRESS t_TRANS MEASUREMENT POINTS
FIGURE 1D. ADDRESS t_TRANS TEST CIRCUIT
FIGURE 1. SWITCHING TIMES
V+
C
V-
C
LOGIC ^OFF
INPUT
ON
SWITCH
OUTPUT
V_OUT
Q = ∆V_OUT x C_L
3V
OFF
0V
∆V_OUT
R_G
EN, LE
NO or NC
0Ω
COM
ADDX
V_G
GND
EN
LOGIC
INPUT
FIGURE 2A. Q MEASUREMENT POINTS
Repeat test for other switches.
FIGURE 2B. Q TEST CIRCUIT
FIGURE 2. CHARGE INJECTION
V_OUT
C_L
1nF
10
FN6053.3
March 13, 2006