HD404629R Datasheet, PDF (147/157 Pages) Renesas Technology Corp – AS Microcomputer Incorporating a DTMF Generator Circuit

HD404629R Series
DTMF Characteristics (HD404628R, HD4046212R, HD404629R: V_CC = 2.7 to 6.0 V, GND = 0 V,
T_a = –20°C to +75°C; HD4074629: V_CC = 2.7 to 5.5 V, GND = 0 V, T_a = –20°C to +75°C, unless
otherwise specified)
Item
Symbol Pin
Min Typ Max Unit
Test Condition
Tone output
voltage (1)
V_OR
TONER 500 660 —
mV_rms
VT_ref – GND = 2.0 V,
R _L = 100 kΩ
Tone output
voltage (2)
V_OC
TONEC 520 690 —
mV_rms
VT_ref – GND = 2.0 V,
R _L = 100 kΩ
Tone output
distortion
%_DIS
—
—
3
7
%
Short circuit
between TONER
and TONEC,
R _L = 100 kΩ
Tone output
ratio
dB_CR
—
Notes: 1. See figure 106.
—
2.5 —
dB
Short circuit
between TONER
and TONEC,
R _L = 100 kΩ
2. See figure 107.
3. 400 kHz, 800 kHz, 2 MHz, or 4 MHz can be used as the operating frequency (f_OSC).
Notes
1
1
2
2
145