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MICRF620Z Datasheet(PDF) 13 Page - Micrel Semiconductor

Part # MICRF620Z
Description  434MHz ISM Band Transceiver Module
PDF  21 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MICRF620Z Datasheet(HTML) 13 Page - Micrel Semiconductor

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Micrel, Inc.
MICRF620/MICRF620Z
July 2006
13
M9999-120205
VCO frequency gain, Vdd=2.5V
380
400
420
440
460
480
0
0,4
0,8
1,2
1,6
2
2,4
V_varactor [V]
11
10
01
00
Figure 6. RF Frequency vs. Varactor Voltage
and VCO Frequency bit (V
= 2.5V)
DD
Lock Detect
A6..A0
D7
D6
D5
D4
D3
D2
D1
D0
0000001
‘1’
‘0’
‘0’
‘0’
RSSI_en
LD_en
PF_FC1
PF_FC0
A lock detector can be enabled by setting LD_en = 1.
When pin LD is high, it indicates that the PLL is in lock.
When entering TX, the procedure is first to load the TX
word and then turn on the PA stage. During the PA ramp
up time, the LD signal may indicate out of lock. It is first
when the PA stage is fully on that the LD signal will
indicate in “Lock”. During transmission, the Lock Detect
signal will have transitions and the user should therefore,
ignore the Lock detect signal.
Modes of Operation
A6..A0
D7
D6
D5
D4
D3
D2
D1
D0
0000000
LNA_by
PA2
PA1
PA0
Sync_en
Mode1
Mode0
’1’
Mode1
Mode0
State
Comments
0
0
Power down
Keeps register configuration
0
1
Standby
Only crystal oscillator running
1
0
Receive
Full receive
1
1
Transmit
Full transmit ex PA state



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