CML Semiconductor Products
Analogue Control Interface
1.0
Features
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Multiplexed 4 Input ADC
10-Bit Resolution
FX839
D/839/4 September 1997
Advance Information
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Three DACs
8 or 10-Bit Resolution
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Custom IRQ Generator with Variable
•
Scalable ADC Clock Frequencies
8-Bit Reference Settings
from Xtal/Clock
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Two Variable Attenuators
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Low Power (3.0V Operation)
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Serial Interface to Host µC
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24-Pin SSOP Package
1.1
Brief Description
This product comprises a selection of independent functional blocks vital to modern microcomputer controlled
radio-frequency communications equipment. Examples of possible uses are as follows:
•
•
•
The four-way multiplexed ADC with magnitude comparator may be used for monitoring RSSI, battery
voltage, temperatures, reflected signals or error voltages.
The three DACs may be used to adjust VCOs, reference oscillators, power output, bias current or IF gain.
The two variable attenuators may be used to adjust deviation, modulation depth or baseband gain.
The FX839 is controlled via the standard serial 'C-BUS'. This is complementary to, and compatible with, many
standard microcomputers and other baseband processing blocks.
©
1997 Consumer Microcircuits Limited
CMLMICRO [ CML MICROCIRCUITS ]
