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參數(shù)資料
| 型號(hào)： | EVB3030A |
| 英文描述： | W3030 3 V Dual-Mode IF Cellular Receiver |
| 中文描述： | W3030 3伏雙模蜂窩接收機(jī)中頻 |
| 文件頁數(shù)： | 19/22頁 |
| 文件大?。?/td> | 429K |
| 代理商： | EVB3030A |
Data Sheet
W3030 3 V Dual-Mode IF Cellular Receiver
April 1999
Lucent Technologies Inc.
6
Pin Information (continued)
Table 1. Pin Descriptions (continued)
Pin
Number
Pin Name
Pin Description
20
ENBD
Enable Digital Mode. Positive logic enable connection for digital mode operation.
21
ENBA
Enable Analog Mode. Positive logic enable connection for analog mode
operation.
22
Q
Q Output. Differential output from Q mixer of quadrature demodulator.
23
Q
Q Output (Inverting). Differential output from Q mixer of quadrature demodulator.
24
CLK
Clock Input. Local oscillator (clock) input to quadrature demodulator phase shifter;
to be capacitively coupled. Input frequency must be four times second IF center
frequency.
25
I
I Output (Inverting). Differential output from I mixer of quadrature demodulator.
26
I
I Output. Differential output from I mixer of quadrature demodulator.
27
AGC
Automatic Gain Control. AGC control input; to be connected to dc source of
0.25 V—1.55 V.
28
VCM
Common-Mode Voltage. Common-mode voltage dc offset set point for I & Q
interface, typically VCC/2.
29
IFDACG
Digital Signal Ground. Signal ground for digital section limiting amplifier; connect
to ground with 0.1 F capacitor.
30
IFDIN
Digital Second IF Input. Differential input to digital section AGC amplifier; to be
directly coupled to dielectric sources such as ceramic filters. Pin 30 is
approximately 2 k
with pin 29 ac-grounded.
31
IFD IN
Digital Second IF Input (Inverting). Differential input to digital section AGC
amplifier. To be ac-grounded.
32
GND2
Second IF Ground. Power supply ground for both analog and digital second IF
amplifier and demodulator sections.
Table 2. Digital Control Pin Truth Table
Control Pin
Mode/Function
ENBA
ENBD
LOW
All Sleep. All receive circuits powered down, supply current <10 A.
LOW
HIGH
Digital Receive. First IF mixing stage, AGC amp and I/Q quadrature
demodulators active.
HIGH
LOW
Analog/FM Receive. First IF mixing stage, 40 dB IF amp, 60 dB limiting amp,
RSSI, and FM detector active.
HIGH
All Active. All receive circuits functional, e.g., digital mode I & Q demodulator
used with analog RSSI.
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