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FX929B датащи(PDF) 43 Page - CML Microcircuits

номер детали FX929B
подробное описание детали  Flexible Operating Modes
PDF  48 Pages
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производитель  CMLMICRO [CML Microcircuits]
домашняя страница  http://www.cmlmicro.com
Logo CMLMICRO - CML Microcircuits

FX929B датащи(HTML) 43 Page - CML Microcircuits

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4-Level FSK Modem Data Pump
FX929B
© 1997 Consumer Microcircuits Limited
43
D/929B/1
Operating Characteristics
For the following conditions unless otherwise specified:
Xtal Frequency = 4.9152MHz, Symbol Rate = 4800 symbols/sec,
Noise Bandwidth = 0 to 9600Hz, VDD = 3.3V to 5.0V, Tamb = - 40°C to +85°C.
Notes
Min.
Typ.
Max.
Units
DC Parameters
IDD
(VDD = 5.0V)
1
4.0
10.0
mA
IDD
(VDD = 3.3V)
1
2.5
6.3
mA
IDD
(Powersave Mode, VDD = 5.0V)
1
1.5
mA
IDD
(Powersave Mode, VDD = 3.3V)
1
0.6
mA
AC Parameters
Tx Output
TXOP Impedance
2
1.0
2.5
k
Ω
Signal Level TXIMP = 0
3
0.8
1.0
1.2
V pk-pk
Signal Level TXIMP = 1
3
0.88
1.1
1.32
V pk-pk
Output DC Offset wrt VDD/2
4
-0.25
+0.25
V
Rx Input
RXIN Impedance (at 100Hz)
10.0
M
Ω
RXIN Amp Voltage Gain (I/P = 1mVrms at 100Hz)
300
V/V
Input Signal Level
5
0.7
1.0
1.3
V pk-pk
DC Offset wrt VDD/2
5
-0.5
+0.5
V
Xtal/Clock Input
'High' Pulse Width
6
40.0
ns
'Low' Pulse Width
6
40.0
ns
Input Impedance (at 100Hz)
10.0
M
Ω
Inverter Gain (I/P = 1mVrms at 100Hz)
20.0
dB
µC Interface
Input Logic "1" Level
7, 8
70%
VDD
Input Logic "0" Level
7, 8
30%
VDD
Input Leakage Current (Vin = 0 to VDD)
7, 8
5.0
+5.0
µA
Input Capacitance
7, 8
10.0
pF
Output Logic "1" Level (lOH = 120µA)
8
92%
VDD
Output Logic "0" Level (lOL = 360µA)
8, 9
8%
VDD
'Off' State Leakage Current (Vout = VDD)
9
10.0
µA
Notes:
1.
At 25
°C. Not including any current drawn from the modem pins by external circuitry other
than the Xtal oscillator.
2.
Small signal impedance, at VDD = 5.0V and Tamb = 25°C.
3.
Measured after the external RC filter (R4/C5) for a "+3 +3 -3 -3...." symbol sequence, at VDD
= 5.0V and Tamb = 25°C (Tx output level is proportional to VDD).
4.
Measured at the TXOP pin with the modem in the Tx idle mode.
5.
For optimum performance, measured at RXFB pin, for a "...+3 +3 -3 -3..." symbol sequence,
at VDD = 5.0V and Tamb = 25°C, TXIMP = 0 or 1. The optimum level and DC offset values
are proportional to VDD.
6.
Timing for an external input to the CLOCK/XTAL pin.
7.
WRN, RDN, CSN, A0 and A1 pins.
8.
D0 - D7 pins.
9.
IRQN pin.



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