HD404669 Datasheet, PDF (132/142 Pages) Hitachi Semiconductor – Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit

HD404669 Series
DTMF Characteristics (HD404668, HD4046612, HD404669, HD40A4668, HD40A46612,
HD40A4669: V_CC = 1.8 to 5.5 V, GND = 0 V, T_a = –20°C to +75°C; HCD404669: V_CC = 1.8 to 5.5 V,
GND = 0 V, T_a = +75°C; HD407A4669: V_CC = 2.2 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
Notes
Tone output
voltage (1)
V_OR
TONER 500 660 —
mV_{r ms}
VT_ref – GND = 2.0 V,
1
R _L = 100 kΩ,
V_CC = 2.2 to 5.0V
Tone output
voltage (2)
V_OC
TONEC 520 690 —
mV_{r ms}
VT_ref – GND = 2.0 V,
1
R _L = 100 kΩ,
V_CC = 2.2 to 5.0V
Tone output
distortion
%DIS
—
—
3
7
%
Short circuit
2
between TONER
and TONEC,
R _L = 100 kΩ
Tone output
ratio
dB_CR
—
—
2.5 —
dB
Short circuit
2
between TONER
and TONEC,
R _L = 100 kΩ
Notes: These characteristics are guaranteed with an operating frequency, f_OSC, of 400 kHz, 800 kHz, 2 MHz,
3.58 MHz, 4 MHz, 7.16 MHz, or 8 MHz.
1. See figure 89.
2. See figure 90.
132