DB839 Datasheet, PDF (16/20 Pages) CML Microcircuits – Two Variable Attenuators

Digitally Controlled Analog I/O Processor
16
MX839 PRELIMINARY INFORMATION
A/Ds and Multiplexed Inputs
(Guaranteed monotonic)
Resolution
Input signal 'linear rate of change'
V_DD = 3.3V, and f_{A/D_CLK} = 1MHz
Conversion Time
Integral non-linearity
Differential non-linearity
Zero error
A/D Clock Frequency (f_{A/D_CLK})
Input Capacitance
Variable Attenuators
Nominal Adjustment Range
MOD1 Attenuator
MOD2 Attenuator
Attenuation Accuracy
Step Size
MOD1
MOD2
Output Impedance
Bandwidth (-3dB)
Input Impedance
Magnitude Comparators and Interrupt
Request
Resolution
Output Logic '0' at IRQ (I_OL= 360µA and pull-up
resistor R2 = 22k: ± 10% to DV_DD)
'Off' State Leakage Current at IRQ
Xtal/Clock Input
Frequency Range
'High' pulse width
'Low' pulse width
Input Impedance (at 100Hz)
Gain (input = 1mV_RMS at 100Hz)
For 1 Bit error
f_{A/D_CLK} = 1MHz
Figure 4
Figure 3
V_OUT = DV_DD
Notes
7
6
5
8
Min.
-20
0
0
-1.0
0.2
0.1
0.5
40
40
Typ.
10
12
1.0
TBD
0.4
0.2
600
100
15
8
10
20
Max.
Units
0.27
2.0
1.0
20
TBD
Bits
mV/µs
µs
LSBs
mV
MHz
pF
12.0
dB
6.0
dB
1.0
dB
0.6
dB
0.3
dB
:
kHz
k:
10%
10
6.0
Bits
DV_DD
µA
MHz
ns
ns
M:
dB
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