Z02215 Datasheet, PDF (70/74 Pages) Zilog, Inc. – Single Chip Modem with Integrated Controller, Data Pump, and Analog Front End

Z02215
Single Chip Modem with Integrated Controller, Data Pump, and AFE
64
Table 19. Analog Characteristics
Description
Parameter Minimum Typical Maximum Units
Input impedance of transformer interface
1
400
1200 –
W
3 dB point of transformer interface
2
21
26.5 32.5
kHz
External integration capacitance Type NPO
3
(COG)
73
82
90
pF
Note: NPO and COG are synonymous terms for an industry standard dielectric material used for ceramic capacitors
which provides a very low temperature coefficient of capacitance (±30 ppm per °C) and voltage coefficient of
capacitance (under 0.01% per Volt). It also has a low dissipation factor (0.1% max at 1 MHz for the values of
interest).
Analog Inputs: Type AI
AC Characteristics
Input Impedance (DC
to V_REF)
Power Supply
Rejection
Input Current
Idle Channel Noise
(3950 Hz Bandwidth)
Signal to Distortion
Symbol
Z_IN
PSRRi
Ii
ICNi
STDi
Minimum Typical
15K
25K
40
–
–80
–
–
–
30
–
Maximum Units
–
Ω
–
dB
80
mA
–72
dBm
–
dB
The characteristics below are provided for information only. They are not tested
except in the functional test vectors.
Characteristics
Symbol
Input Capacitance
C_IN
Input Bias
V_DCOFF
Analog Input Voltage V_PKI
(peak differential), (23)
Analog Input Voltage V_PKIP
(per RXI+. RXI– pin)
Minimum
–
–
–2.362
Typical
10
+2.5
–
–1.181
–
Maximum Units
–
pF
–
V
+2.362
V
+1.181
V
PS001907-0904
Analog Inputs: Type AI