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EVB7122
27 to 930MHz Transceiver
Evaluation Board Description
3.1.4
C – word
Name
Bits
Description
NR
[16:0]
64d .. 131071d
Feedback divider ratio in RX operation mode
Set the desired frequency range
BAND
[17]
0
1
recommended at f RF < 500 MHz
recommended at f RF > 500MHz
Some tail current sources are linked to this bit in order to save current for low frequency
operations.
VCO active current
VCOCUR
[19:18]
00
01
10
11
low current (300 μA)
standard current (500 μA)
high1 current (700 μA)
high2 current (900 μA)
Phase Detector polarity
0
negative
PFDPOL
[20]
1
#default
positive
VCO
OUTPUT
FREQUENCY
pos
neg
VCO INPUT VOLTAGE
LNA gain control mode
0
external LNA gain control
#default
LNACTRL
[21]
1
LNA gain will be set via pin GAIN_LNA.
internal LNA gain control
LNA gain will be set via bit LNAGAIN (bit 12 in A-word). Nevertheless pin GAIN_LNA must
be connected to either VCC or VEE.
39012 07122 02
Rev. 006
Page 11 of 24
EVB Description
June/08
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相关代理商/技术参数
EVB7122-868-ASK-A 制造商:MELEXIS 制造商全称:Melexis Microelectronic Systems 功能描述:27 to 930MHz Transceiver Evaluation Board Description
EVB7122-868-ASK-C 制造商:MELEXIS 制造商全称:Melexis Microelectronic Systems 功能描述:27 to 930MHz Transceiver Evaluation Board Description
EVB7122-868-FM-A 制造商:MELEXIS 制造商全称:Melexis Microelectronic Systems 功能描述:27 to 930MHz Transceiver Evaluation Board Description
EVB7122-868-FM-C 制造商:MELEXIS 制造商全称:Melexis Microelectronic Systems 功能描述:27 to 930MHz Transceiver Evaluation Board Description
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EVB7122-868-FSK-C 制造商:MELEXIS 制造商全称:Melexis Microelectronic Systems 功能描述:27 to 930MHz Transceiver Evaluation Board Description
EVB7122-915-ASK-A 制造商:MELEXIS 制造商全称:Melexis Microelectronic Systems 功能描述:27 to 930MHz Transceiver Evaluation Board Description
EVB7122-915-ASK-C 制造商:MELEXIS 制造商全称:Melexis Microelectronic Systems 功能描述:27 to 930MHz Transceiver Evaluation Board Description