DB839 Datasheet, PDF (3/20 Pages) CML Microcircuits – Two Variable Attenuators

Digitally Controlled Analog I/O Processor
1 Block Diagram
MUTE1
MOD1 IN
MUTE2
MOD2 IN
3
0 to 12dB x 0.4dB Steps
0 to 16dB x 0.2dB Steps
MX839 PRELIMINARY INFORMATION
MOD1OUT
MOD2OUT
A/DIN1
A/DIN2
4:1
A/DIN3 MUX
A/D
10
bit
1:4
MUX
A/DIN4
HIGH COMPARATOR
A/D REG1
LOW COMPARATOR
HIGH COMPARATOR
A/D REG2
LOW COMPARATOR
HIGH COMPARATOR
A/D REG3
LOW COMPARATOR
HIGH COMPARATOR
A/D REG4
LOW COMPARATOR
REPLY DATA
COMMAND DATA
CS
SERIAL CLOCK
4-wire
SERIAL INTERFACE
AND LOGIC
CONTROL
XTAL/CLOCK
XTAL
CLOCK
OSCILLATOR
AND DIVIDERS
DACOUT1
DAC1
8/10 bit
DACOUT2
DAC2
8/10 bit
DACOUT3
DAC3
8/10 bit
ADC COMP IRQ
AV_DD
V_SS
V_BIAS
DV_DD
Figure 1: Block Diagram
AV_DD
DV_DD
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