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參數(shù)資料
| 型號(hào)： | MAX1007 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Mobile-Radio Analog Controller |
| 中文描述： | 移動(dòng)無線模擬控制器 |
| 文件頁數(shù)： | 7/12頁 |
| 文件大?。?/td> | 110K |
| 代理商： | MAX1007 |
_______________Detailed Desc ription
The MAX1007 comprises several blocks for measuring
and controlling radio-frequency (RF) signals. The mea-
surement blocks, including power sense, antenna or
preamble-switched diversity, and the analog-to-digital
converter (ADC), allow the comparison of various RF
inputs. The control blocks, including four digital-to-ana-
log converters (DACs), digital outputs BANT and
SDG
,
and the serial interface, aid frequency tuning and allow
the optimization of transceiver gain under microproces-
sor control.
Power S ense
The power-sense circuit consists of a multiplexer (mux),
a programmable gain amplifier (PGA), a peak detector,
and a buffer. The circuit amplifies/attenuates the
demodulated RF waveform, peak-holds the signal, and
buffers the outputs to the ADC for power-sense mea-
surement.
The demodulation process with external circuitry for
one channel is shown in Figures 3a and 3b. This circuit
typically recovers the negative envelope of the RF
waveform. The 1.87V PSBIAS voltage and the 100μA
current source are both generated by the MAX1007.
M
Mobile-Radio Analog Controller
_______________________________________________________________________________________
7
CONTROL
SIGNALS
STATE
INTERNAL SIGNALS
ADCCTRL
PKWDW
1
≥
7 CLOCKS
2
CLOCKS
ACTIVE ADC
ADC CONVERSION
RESET
SWITCH FOR PS
10 CLOCKS
1
10 CLOCKS
8 CLOCKS
8 CLOCKS
6 CLOCKS
1
B
C
A
Figure 1. RSSI/Power-Sense Control Signals
ANTENNA SELECT
(EXTERNALLY GENERATED)
STATE
RSSI
FIRST ANTENNA
SECOND ANTENNA
PSDWDW
PSDCTRL
BANT
NEW VALUE
INTERNAL RESET 1
INTERNAL RESET 2
OLD VALUE
PERIOD A
PERIOD B
1
8 CLOCKS
4
4
9 CLOCKS
D
COMPARE
Figure 2. Antenna-Diversity Control Signals
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1007CAG | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Mobile-Radio Analog Controller |
| MAX1007EAG | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Mobile-Radio Analog Controller |
| MAX1008CAP | 制造商:Maxim Integrated Products 功能描述:MOBILE RADIO ANALOG CONTROLLER - Rail/Tube |
| MAX100CFR | 制造商:Maxim Integrated Products 功能描述:250MSPS, 8-BIT ADC WITH TRACK/HOLD - Bulk |
| MAX100CFR1 | 制造商:Maxim Integrated Products 功能描述:250MSPS, 8-BIT ADC WITH TRACK/HOLD - Bulk |
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