ISL54048_0706 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
R_G
NX1 OR NX2
COM
SWITCH
OUTPUT
V_OUT
ΔV_OUT
V_G
GND
IN
LOGIC ^ON
INPUT
OFF
V+
ON
0V
LOGIC
INPUT
Q = ΔV_OUT x C_L
Repeat test for all switches.
FIGURE 2A. MEASUREMENT POINTS
FIGURE 2. CHARGE INJECTION
FIGURE 2B. TEST CIRCUIT
V_OUT
C_L
SIGNAL
GENERATOR
ANALYZER
R_L
V+
C
NX1 OR NX2
IN 0V or V+
COM
GND
V+
C
r_ON = V₁/100mA
NX1 OR NX2
V_NX
100mA
V₁
0V or V+
IN
COM
GND
Signal direction through switch is reversed, worst case values
are recorded. Repeat test for all switches.
FIGURE 3. OFF ISOLATION TEST CIRCUIT
Repeat test for all switches.
FIGURE 4. r_ON TEST CIRCUIT
6
FN6469.1
June 11, 2007