MC145446A Ver la hoja de datos (PDF) - Motorola => Freescale
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MC145446A Datasheet PDF : 14 Pages
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TRANSMIT ATTENUATOR CHARACTERISTICS (VCC = 5.0 V ± 10%, TA = – 20 to 70°C)
Characteristic
Symbol
Conditions
Min
Typ
Max
Attenuator Range
Attenuator Accuracy
1 dB – 5 dB
6 dB – 9 dB
ARNG
AACC
0
—
15
– 0.5
—
0.5
–1
—
1
10 dB – 15 dB
– 1.7
—
1
RECEIVER CHARACTERISTICS (INCLUDES HYBRID, DEMODULATOR, AND CARRIER DETECTOR)
(VCC = 5.0 V ± 10%, TA = – 20 to 70°C)
Characteristic
Symbol
Conditions
Min
Typ
Max
Input Impedance
Receiver Carrier Amplitude
Carrier Detect Threshold
OFF to ON
ON to OFF
RIRX
VIRX
VCDON
VCDOF
RxA Pin
CDA = 1.2 5V
fin = 1.0 kHz
50
—
—
– 48
—
– 12
—
– 44
—
—
– 47
—
Hysterisis (VCDON – VCDOF)
Carrier Detect Timing
OFF to ON
HYS
TCDON
CD1 = 0, CD0 = 0
CD1 = 0, CD0 = 1
2
—
—
—
450
—
—
10
—
CD1 = 1, CD0 = 0
—
10
—
CD1 = 1, CD0 = 1
—
70
—
ON to OFF
TCDOFF CD1 = 0, CD0 = 0
CD1 = 0, CD0 = 1
—
35
—
—
35
—
CD1 = 1, CD0 = 0
—
20
—
CD1 = 1, CD0 = 1
—
15
—
CPTD CHARACTERISTICS (VCC = 5.0 V ± 10%, TA = – 20 to 70°C)
Characteristic
Symbol
Conditions
Bandpass Filter Center Frequency
Bandpass Filter – 3 dB Band Width
Tone Detect Level
OFF to ON
ON to OFF
fc
∆ BW
VTDON
VTDOF
CDA = 1.25 V
fin = 400 Hz
Tone Detect Timing
OFF to ON
ON to OFF
TTDON
TTDOF
DTMF TRANSMIT CHARACTERISTICS (VCC = 5.0 V ± 10%, TA = – 20 to 70°C)
Characteristic
Symbol
Conditions
Tone Output Level
High Group Pre–Emphasis
DTMF Distortion
DTMF Frequency Variation
Low Group
High Group
Vfl
Vfh
PE
DIST
∆fV
Attenuator = 0 dB
RTLA = ∞
Crystal Frequency
3.579545 MHz
Single Tone Mode
VTxA1 – VTxA2,
RL = 1.2 kΩ
Out–of–Band Energy
Setup Time
VOE
tosc
Min
Typ
Max
—
400
—
—
140
—
—
– 44
—
—
– 47
—
—
10
—
—
25
—
Min
Typ
Max
—
2.5
—
—
3.5
—
0
—
3
—
5
—
–1
—
1
Figure 1
—
4
—
Unit
dB
dB
Unit
kΩ
dBm
dBm
dB
ms
Unit
Hz
Hz
dBm
ms
Unit
dBm
dB
%
%
dB
ms
MC145446A
4
MOTOROLA
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