参数资料
型号: L64733C-44
厂商: LSI CORP
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQCC44
封装: 7 X 7 MM, 0.90 MM HEIGHT, QFN-44
文件页数: 3/52页
文件大小: 552K
代理商: L64733C-44
L64733C/L64734 Tuner and Satellite Receiver Chipset
11
QOUTp, QOUTn
Q Channel Baseband Data
Output
The QOUT differential signals form the quadrature-phase
data provided to the L64734.
Prescaler Signals
The following signals are the prescaler outputs from the L64733C to the
L64734.
PSOUTp
, PSOUTn
Prescaler
Output
When the LOBUF signal is LOW, the PSOUT differential
signals are the L64733C prescaler outputs.
When LOBUF is HIGH, the Local Oscillator (LO) buffer
(50
) feeds the PSOUT differential signals.
The programmable counters on the L64734 are clocked
on the rising edge of the PSOUT signal.
Control Signals
The following signals, some of which are generated by the L64734 IC,
control the mode of operation of the L64733C IC.
AGC1
Automatic Gain Control 1
Input
The AGC1 signal is a high-impedance input from the
L64734 that controls RF AGC circuitry. The AGC1 voltage
has a range of 0.5 V to 4.8 V.
AGC2
Automatic Gain Control 2
Input
The AGC2 signal is a high-impedance input from the
L64734 that controls RF AGC circuitry.
CPG[2:1]
Charge Pump Gain
Input
The CPG[2:1] signals set the charge pump gain
according to the table below.
Charge Pump Current (typ), mA
CPG1
CPG2
FB HIGH
FB LOW
0
0.1
0
1
0.3
1
0
0.6
1
1.8
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