
NLMD5820
http://onsemi.com
7
AC ELECTRICAL CHARACTERISTICS OF SWITCHES
(Input t
r
= t
f
= 3.0 ns)
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
t
ON
Turn-On Time
R
L
= 50 , C
L
= 35 pF (Figures 43 and 44)
50
ns
t
OFF
Turn-Off Time
R
L
= 50 , C
L
= 35 pF (Figures 43 and 44)
30
ns
C
IN
Control Pin Input Capacitance
V
CC
= 0 V
3.5
pF
C
NC
NC Port Capacitance
V
CC
= 3.3 V, V
IN
= 0 V
60
pF
C
COM
COM Port Capacitance When Switch is
Enabled
V
CC
= V
IN
= 3.3 V
200
pF
BW
Maximum On-Channel -3 dB
Bandwidth or Minimum Frequency
Response
V
IN
centered between V
CC
and GND (Figure 45)
19
MHz
V
ONL
Maximum Feed-through On Loss
V
IN
= 0 dBm @ 100 kHz to 50 MHz
V
IN
centered between V
CC
and GND (Figure 45)
-0.06
dB
V
ISO
Off-Channel Isolation
f = 100 kHz; V
IS
= 1 V RMS; C
L
= 5.0 pF
V
IN
centered between V
CC
and GND (Figure 45)
-68
dB
Q
Charge Injection Select Input to
Common I/O
V
IN =
V
CC to
GND, R
IS
= 0 , C
L
= 1.0 nF
Q = C
L
x DV
OUT
(Figure 46)
38
pC
THD
Total Harmonic Distortion THD + Noise
F
IS
= 20 Hz to 20 kHz, R
L
= R
gen
= 600 ,
C
L
= 50 pF, V
IS
= 2.0 V RMS
0.08
%
VCT
Channel-to-Channel Crosstalk
f = 100 kHz; V
IS
= 1.0 V RMS, C
L
= 5.0 pF, R
L
= 50
V
IN
centered between V
CC
and GND (Figure 45)
-70
dB
Figure 2. Test Setup for Typical Characteristics (Figures 3 - 34)
OUTM
OUTP
GND
R
i
INP
INM
VP
R
i
C
i
C
i
+
-
+
-
4.7 F
+
-
Audio Input
Signal
Load
30 kHz
Low Pass
Filter
Measurement
Input
Power
Supply
NLMD5820
NOTES:
1. Unless otherwise noted, C
i
= 100 nF and R
i
= 150 k . Thus, the gain setting is 2 V/V and the cutoff frequency of the
input high pass filter is set to 10 Hz. Input capacitors are shorted for CMRR measurements.
2. To closely reproduce a real application case, all measurements are performed using the following loads:
R
L
= 8 means Load = 15 H + 8
+ 15 H
R
L
= 4 means Load = 15 H + 4 + 15 H
Very low DCR 15 H inductors (50 m ) have been used for the following graphs. Thus, the electrical load
measurements are performed on the resistor (8 or 4 ) in differential mode.
3. For Efficiency measurements, the optional 30 kHz filter is used. An RC low-pass filter is selected with
(100
, 47 nF) on each PWM output.