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– 24 –
CXP88616/88624
Voltage gain
1,
2
LPF cut-off
frequency
1,
2
Offset voltage
2
Comparator level
2
Input resistance
Charge switch ON
resistance
Item
Symbol
Pin
Conditions
Min.
Typ.
Max.
Unit
dB
dB
dB
dB
kHz
mV
mV
0
-p
mV
0
-p
mV
0
-p
mV
0
-p
mV
0
-p
mV
0
-
p
k
(3) CTL 2nd amplifier characteristics
(Ta = –20 to +75°C, V
DD
= AMPV
DD
= 5.0V, Vss = AMPV
SS
= 0V, CTLAG reference)
Gain = 5dB
Gain = 11dB
Gain = 16dB
Gain = 20dB
f
DC
– 3dB
CTLSAMPI = open
Comparator level = +100mV
0
-p
Comparator level = +250mV
0
-p
Comparator level = +400mV
0
-p
Comparator level =
–
100mV
0
-p
Comparator level =
–
250mV
0
-p
Comparator level =
–
400mV
0
-p
Charge switch OFF
CTLSAMPI = +0.2V
Charge switch ON
CTLSAMPI = +0.5V
A
VCTL2
f
CCTL
V
OSCTL2
V
CCTL
R
INCTL2
R
CCTL2
CTLSAMPI
4.8
10.4
15.3
19.3
15.0
–50
70.0
215
370
–70.0
–220
–370
10.0
5.8
11.5
16.5
20.5
25.0
0
100
245
400
–100
–250
–400
18.0
770
6.8
12.6
17.7
21.7
40.0
+50
130
275
430
–130
–280
–430
1140
1) When the signal is input with the AC coupling capacitor (47μF) connected to CTLSAMPI pin.
2) The result after measuring the output waveform of amplifier internal low-pass filter or voltage value.
Voltage gain
1
Input amplitude
(peak value)
Input sensitivity
Input dead band
Item
Symbol
Pin
Conditions
Min.
Typ.
Max.
Unit
dB
mV
0
-p
mV
0
-p
mV
0
-p
(4) CTLAMP characteristics (1st amplifier + 2nd amplifier)
(Ta = –20 to +75°C, V
DD
= AMPV
DD
= 5.0V, Vss = AMPV
SS
= 0V reference)
CTL 1st amplifier gain = 16dB
CTL 2nd amplifier gain = 20dB
RECCTL (–) = 0V
RECCTL (–) = 0V
CTL 1st amplifier gain = 58dB
CTL 2nd amplifier gain = 20dB
Comparator level = +400mV
0
-p
–400mV
0
-p
RECCTL (–) = 0V
A
VCTL
V
PKCTL
V
SCTL
V
NSCTL
RECCTL (+)
31.8
0.015
35.0
0.08
0.04
38.2
±300
0.10
1) As for other combinations of the amplifier gains, CTL 1st amplifier and CTL 2nd amplifier are added
respectively.
Note)
The result when the signal is input from RECCTL (+) pin with CTL 1st amplifier + CTL 2nd amplifier after
performing AC coupling of CTLCIN (+), CTLAMP (+) pins and CTLCIN (–), CTLAMP (–) pins, and
CTLFAMPO, CTLSAMPI pins.