
– 23 –
CXP88616/88624
Voltage gain
1
Offset voltage
Input resistance
Charge switch ON
resistance
RECCTL and
CTLCIN connection
switch ON resistance
CTLCIN 0V fix
switch ON resistance
Item
Symbol
Pin
Conditions
Min.
Typ.
Max.
Unit
dB
dB
dB
dB
mV
k
k
(2) CTL 1st amplifier characteristics
(Ta = –20 to +75°C, V
DD
= AMPV
DD
= 5.0V, Vss = AMPV
SS
= 0V, CTLAG reference)
Gain = 16dB
RECCTL (
–
) = 0V
Gain = 27dB
RECCTL (
–
) = 0V
Gain = 42dB
RECCTL (
–
) = 0V
Gain = 58dB
RECCTL (
–
) = 0V
CTLAMP (+) and CTLAMP (
–
)
= open
Charge switch OFF
CTLAMP (+) = +0.2V
Charge switch OFF
CTLAMP (
–
) = +0.2V
Charge switch ON
CTLAMP (+) = +0.5V
Charge switch ON
CTLAMP (
–
) = +0.5V
During CTL read operation,
CTLCIN (+) – RECCTL (+) = 0.2V
During CTL read operation,
CTLCIN (–
)
– RECCTL (–) = 0.2V
During CTL write operation,
CTLCIN (+) = AMPV
SS
+ 0.2V
During CTL write operation,
CTLCIN (
–
) = AMPV
SS
+ 0.2V
A
VCTL1
V
OSCTL
1
R
INCTL
1
R
CCTL
1
R
READ
R
WRITE
RECCTL (+)
CTLFAMPO
2
CTLAMP (+)
CTLAMP (–)
CTLAMP (+)
CTLAMP (–)
RECCTL (+)
CTLCIN (+)
RECCTL (–)
CTLCIN (–)
CTLCIN (+)
CTLCIN (–)
12.5
23.5
39.0
54.5
–40
26.0
1.20
315
315
14.5
25.5
41.5
57.0
0
44.5
2.0
560
560
400
400
250
250
16.5
27.5
44.0
59.5
+40
1010
1010
770
770
310
310
1) When CTLCIN (+), CTLAMP (+) pins and CTLCIN (–), CTLAMP (–) pins are AC coupled, and then the
signal is input from RECCTL (+) pin.
2) The result after measuring the CTLFAMPO output waveform or voltage gain.
Note)
The gain increases by approximately 1.5dB when the AC coupling capacitor (47μF) is connected to
CTLAMP (+) and CTLAMP (–) pins, and the signal is input from CTLAMP (+) and CTLAMP (–) pins.
Reference level
output voltage
Reference level
output current
V
OR
I
OR
VREFOUT
CTLAG
VREFOUT
CTLAG
Item
Symbol
Pin
Conditions
Min.
2.2
Typ.
2.4
Max.
Unit
V
V
mA
mA
mA
mA
Analog Circuit Characteristics
(1) Amplifier circuit reference voltage characteristics
(Ta = –20 to
+
75°C, V
DD
= AMPV
DD
= 5.0V, Vss = AMPV
SS
= 0V reference)
2.6
2.55
VREFOUT = VREFOUT + 0.5V
VREFOUT = VREFOUT
–
0.5V
CTLAG = CTLAG + 0.5V
CTLAG = CTLAG – 0.5V
2.15
3.50
–0.30
2.80
–0.30
2.35
6.5
–0.85
5.5
–0.85