MICRF610 Micrel Inc, MICRF610 Datasheet - Page 13

• Manufacturer Part Number: MICRF610
• Manufacturer: Micrel Inc

Specifications of MICRF610

• Operating Temperature (min): -20C
• Operating Temperature Classification: Commercial
• Modulation Type: FSK
• Lead Free Status / Rohs Status: Not Compliant

Lock Detect
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
Micrel, Inc.
July 2006
0000000
A6..A0
0000001
A6..A0
Mode1
1000
950
900
850
800
0
0
1
1
Figure 6. RF Frequency vs. Varactor Voltage
LNA_by
0
D7
‘1’
and VCO Frequency bit (V
D7
Mode0
0
1
0
1
D6
‘0’
0,5
PA2
D6
D5
‘0’
Varactor voltage (V)
Power down
Transmit
Standby
Receive
PA1
State
D5
D4
‘0’
Tuning range
1
PA0
RSSI_en
D4
D3
1,5
Comments
Keeps register configuration
Only crystal oscillator running
Full receive
Full transmit ex PA state
Sync_en
D3
LD_en
DD
D2
2
= 2.25V)
Mode1
D2
PF_FC1
D1
2,5
Mode0
D1
PF_FC0
D0
D0
’1’
'10'
'11'
13
MICRF610/MICRF610Z
M9999-120205