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UAA2077TS-D View Datasheet(PDF) - Philips Electronics

Part Name
Description
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UAA2077TS-D
Philips
Philips Electronics Philips
UAA2077TS-D Datasheet PDF : 16 Pages
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Philips Semiconductors
2 GHz image rejecting front-end
Preliminary specification
UAA2077TS
Local oscillator section
The LO input directly drives the two internal all-pass
networks to provide the quadrature signals for the mixers
(see Fig.4).
The SX mode (see Table 1) is used to activate the
LO section, thus minimizing pulling of the external Voltage
Controlled Oscillator (VCO) when enabling the receive
section. The SX mode is active when the logic level on pin
SXON is HIGH.
Table 1 Operating modes
LOGIC LEVEL
PIN RXON PIN SXON
MODE
LOW
LOW Power-down mode
HIGH
LOW
RX mode; receive section
active
LOW
HIGH SX mode; LO section active
HIGH
HIGH SRX mode; both sections
active
handbook, halfpage
to receive section
VCCLO
LOGND
GND
13
14
135°
45°
QUADRATURE
UAA2077TS
9
PHASE
SHIFTER
7
SXON
11 12
LOINB LOINA
FCA014
Fig.4 LO section.
2000 Apr 17
5
 

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