FEDL7020-02
1
Semiconductor
ML7020
AC Characteristics (Call Progress Tone Section)
(VDD = 4.5 to 5.5 V, Ta = –40 to +85°C)
Parameter
Symbol
VCPT
Condition
Min.
–21.5
380
780
—
Typ.
–20.0
400
800
—
Max.
–18.5
420
820
–23
–6
Unit
dBm
Hz
Transmit level
Pin TO
During 400 Hz output
During 800 Hz output
Pin TO
Transmit frequency
fCPT
Pin TO
Hz
Distortion rate
THDCPT
VDETCP
VREJCP
fDETCP
dB
Detection level
400 Hz, level of LI1O and LI2O
400 Hz, level of LI1O and LI2O
—
–46
—
—
dBm
dBm
Hz
Non-detection level
Detection frequency
—
–60
440
—
360
510
—
—
—
Hz
Non-detection
frequency
frejCP
—
—
300
—
Hz
tDETCP
tREJCP
Detection
30
—
ms
Detection
persistence period
See Figure 4.
Non-detection
—
—
10
ms
Detection delay time tDELCP
10
17
30
ms
Detection hold time
tHOLCP
10
17
30
ms
tREJCP
tDETCP
CPT input
tDELCP
tHOLCP
DETB
Figure 4 Call progress tone detection timing
12/19
OKI [ OKI ELECTRONIC COMPONETS ]
