ISL54048 Datasheet, PDF (6/12 Pages) Intersil Corporation – Ultra Low ON-Resistance, +1.65V to +4.5V, Single Supply, Dual SPST Analog Switch

ISL54048, ISL54049
Test Circuits and Waveforms
V+
LOGIC
INPUT
0V
50%
t_OFF
t_r < 5ns
t_f < 5ns
SWITCH
INPUT
V_Nx1
SWITCH
OUTPUT _0V
V_OUT
90%
t_ON
90%
Logic input waveform is inverted for switches that have the opposite
logic sense.
V+
C
SWITCH
INPUT
LOGIC
INPUT
NX1 OR NX2
IN
GND
COM
V_OUT
R_L
C_L
50Ω 35pF
Repeat test for all switches. C_L includes fixture and stray
capacitance.
V_OUT
=
V(NO _{or NC)}
------------^r--^L--------------
R_L + r_(ON)
FIGURE 1A. MEASUREMENT POINTS
FIGURE 1. SWITCHING TIMES
FIGURE 1B. TEST CIRCUIT
V+
C
SWITCH
OUTPUT
V_OUT
LOGIC ^ON
INPUT
ΔV_OUT
OFF
V+
ON
0V
R_G
NX1 OR NX2
COM
V_G
GND
IN
LOGIC
INPUT
Q = ΔV_OUT x C_L
FIGURE 2A. MEASUREMENT POINTS
Repeat test for all switches.
FIGURE 2B. TEST CIRCUIT
FIGURE 2. CHARGE INJECTION
V_OUT
C_L
SIGNAL
GENERATOR
V+
C
NX1 OR NX2
IN 0V or V+
ANALYZER
R_L
COM
GND
Signal direction through switch is reversed, worst case values
are recorded. Repeat test for all switches.
FIGURE 3. OFF ISOLATION TEST CIRCUIT
6
V+
C
r_ON = V₁/100mA
NX1 OR NX2
V_NX
100mA
V₁
0V or V+
IN
COM
GND
Repeat test for all switches.
FIGURE 4. r_ON TEST CIRCUIT
FN6469.0
March 20, 2007