FX643 Datasheet, PDF (10/14 Pages) CML Microcircuits – Call Progress Tone Detector

Call Progress Tone Detector
Operating Characteristics
For the following conditions unless otherwise specified:
Xtal Frequency = 3.579545MHz, S/N = 16 dB, Noise Bandwidth = 5 kHz,
V_DD = 3.3V to 5.0V, Tamb = - 40°C to +85°C. 0dB = 775mVrms.
DC Parameters
I_DD (ENABLE = "1")
I_DD (ENABLE = "1")
(V_DD = 5.0V)
(V_DD = 3.3V)
AC Parameters
SIGIN pin
Input Impedance (at 100Hz)
Minimum Input Signal Level
Input Signal Dynamic Range
Signal to Noise Ratio
Notes
1
1
Min.
Typ.
0.5
0.3
2
0.35
3
-40
3
40
16
Clock Input
'High' Pulse Width
'Low' Pulse Width
Input Impedance (at 100Hz)
Gain (I/P = 1mV rms at 100Hz)
4
40
4
40
10
20
Logic Interface
Input Logic "1" Level
Input Logic "0" Level
Input Leakage Current (Vin = 0 to V_DD)
Input Capacitance
Output Logic "1" Level (l_OH = 120µA)
Output Logic "0" Level (l_OL = 360µA)
5
80%
5
5
5.0
5
10.0
6
90%
6
FX643
Max.
1.0
0.7
Units
mA
mA
MΩ
dB
dB
dB
ns
ns
MΩ
dB
V_DD
20%
V_DD
+5.0
µA
pF
10%
V_DD
V_DD
Notes:
1. Not including any current drawn from the device pins by external circuitry.
2. Small signal impedance over the frequency range 100Hz to 2000Hz and at 5.0V.
3. The input level is not critical as the detector uses a stochastic algorithm.
4. Timing for an external input to the XTAL/CLOCK pin.
5. ENABLE pin.
6. DETECT1, DETECT2 and DETECT3 pins.
© 1996 Consumer Microcircuits Limited
10
D/643/4