AX.25 Modem
CMX7031/CMX7041
AC Parameters (cont.)
Notes
Min.
Typ.
Max.
Unit
Auxiliary Signal Inputs (Aux ADC 1 to 4)
Source Output Impedance
51
–
–
24
k
Auxiliary 10 Bit ADCs
Resolution
–
–
–
10
–
250
–
80%
–
Bits
Maximum Input Level (pk-pk)
Conversion Time
54
52
AV
DD
µs
Input Impedance
Resistance
Capacitance
–
–
10
5
–
–
M
pF
Zero Error
(input offset to give ADC output = 0)
Integral Non-linearity
Differential Non-linearity
0
–
–
–
–
–
±10
±3
±1
mV
LSBs
LSBs
53
54
Auxiliary 10 Bit DACs
Resolution
–
80%
10
–
–
–
Bits
Maximum Output Level (pk-pk), no load
Zero Error
(output offset from a DAC input = 0)
Resistive Load
AV
DD
0
5
–
–
–
–
–
–
±10
–
±4
±1
mV
k
LSBs
LSBs
Integral Non-linearity
Differential Non-linearity
53
51
Denotes output impedance of the driver of the auxiliary input signal, to ensure
< 1 bit additional error under nominal conditions.
Notes:
52
53
54
With an auxiliary clock frequency of 6.144MHz.
Guaranteed monotonic with no missing codes.
Centred about AV /2.
DD
2013 CML Microsystems Plc
Page 43
D/7031/7041_FI-4.x/5
CMLMICRO [ CML MICROCIRCUITS ]
