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參數(shù)資料
| 型號： | MAX1007EAG |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | Mobile-Radio Analog Controller |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO24 |
| 封裝： | 5.30 X 0.65 MM, SSOP-24 |
| 文件頁數(shù)： | 8/12頁 |
| 文件大?。?/td> | 110K |
| 代理商： | MAX1007EAG |
M
In Figure 3b, the mux selects the signal from one of
three input channels: RPS, FPS1, and FPS2. The PGA
then amplifies or attenuates the input signal according
to the signal power-class level and the transmission
mode (forward or reverse) (Table 1). Three gain set-
tings are provided in the PGA: -0.53, -0.44, and -6. The
voltage range at the internal node PSOUT is equal to
the ADC’s input range.
After the PGA, the signal is fed to a peak detector,
which tracks the input and holds the positive peak volt-
age until the ADC starts a conversion.
Mobile-Radio Analog Controller
8
_______________________________________________________________________________________
+
–
PSBIAS
D1
1k
50
R3
R1
RF INPUT
R5
300
1.87V
C3
10pF
RPS
FPS1
FPS2
R2
50
C2
10pF
C1
10pF
AGND
AGND
C4
1nF
50
TRANSMIT LINE
OR 22nH INDUCTOR
Figure 3a. External Circuit for Envelope Detection
(one channel)
AV
DD
I
SOURCE
100
μ
A
PSOUT
PGA
FPS1
FPS2
RPS
Figure 3b. Power-Sense Block
Table 1. Data-Byte Definitions
NAME
A [2:0]
D [7:0]
0 0 0
XDAC
Write [7,6]:
[5:0]:
0 0 1
SDAC
Write
[7]:
[6:0]:
0 1 0
KDAC
Write
[7]:
[6:0]:
0 1 1
GDAC
Write [7,6]:
[6:0]:
1 1 1
ADC
Read [7:0]:
1 1 0
1 0 1
1 0 0
DESCRIPTION
Reserved
XDAC value [5:0]; LSB is bit 0, binary.
F/R bit, defines forward or reverse power-sense measurement
0 = Reverse power-sense measurement; RPS pin
1 = Forward power-sense measurement; FPS1/FPS2 pin
SDAC value [6:0]; LSB is bit 0, binary.
ADC channel selection:
0 = Power sense or RSSI via peak-hold circuit connected to ADC (CH0)
1 = RSSI pin connected to ADC directly (CH1)
KDAC value [6:0]; LSB is bit 0, binary.
Power class:
00 = Class 1
01 = Class 2
10 = Class 3
11 = Class 4
GDAC value [5:0]; LSB is bit 0, binary.
ADC value [7:0]; LSB is bit 0, binary.
Reserved
Reserved
Reserved
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相關代理商/技術參數(shù) |
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