ML2712-1 데이터 시트보기 (PDF) - Micro Linear Corporation
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ML2712-1 Datasheet PDF : 2 Pages
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2.4GHz FHSS Radio Chipset
The 2.4GHz radio chipset is targeted at the IEEE802.11 Frequency Hopping Spread Spectrum
standard. Two devices; ML2712 2.4GHz RF Transceiver and the ML2713 IF Transceiver implement
a very highly integrated, easy to use radio with a low cost bill of materials. The transmit path
includes a DAC and IF up converter in the ML2713 followed by an integrated transmit PLL, 2.4GHz
mixer and directly modulated VCO in the ML2712. The result is accurate digital generation of
the modulated signal for 802.11 compatibility and maintenance of adequate transmitter range even
without RF bandpass filters. The dual conversion receiver features high dynamic range and support
for the 4G FSK/2Mbps requirement of 802.11 standard. The chipset also inplements a self aligning
descriminator adjusted with every frequency hop.
An optional ML2731 PA Bias Controller completes the set.
Block Diagram
VPA
VBIAS
VNEG
C1
C2
PA on/off switch
and current sense
Bias Control
Negative voltage
generator
Voltage
Regulator
ML2731
PAEN
ICON
Crystal
Oscillator
Sine & square
wave drivers
NEGEN
XIN
Crystal
XOUT
PDN
REGO
SINO CLKO
Transmit
Power
Amplifier
R. C.
Loop
Filter
WB Charge
Pump/WB
Phase Comp
ML2712
DAC
RSSI
Input
+
–
2LO VCO
PLL 2
LPF
Lock
Detect
x2
MUX
PLL 1
1LO VCO
2LO Loop
Filter &
Tank Circuit
1LO Loop
Filter &
Tank Circuit
Baseband
IC
Reference
Frequency
32MHz Input
Clock
Image Reject Rx IF
Downconverter
Tx Regulator
Output
Tx Regulator
Output
Image Reject Tx
DC IF Upconverter
Reg
RSSI
Limiter
ML2713
Discrim-
inator
Quad &
Filter
Auto Align
Control
Circuits
Data Filter
DAC
DC
Restore
Rx Out
+
–
Control
Interface
D/A Input
Micro Linear makes no representations or warranties with respect to the accuracy, utility, or completeness of the contents of this publication and reserves the right to make changes to specifications and product
descriptions at any time without notice. No license, express or implied, by estoppel or otherwise, to any patents or other intellectual property rights is granted by this document. The circuits contained in this
document are offered as possible applications only. Particular uses or applications may invalidate some of the specifications and/or product descriptions contained herein. The customer is urged to perform its
own engineering review before deciding on a particular application. Micro Linear assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of Micro Linear
products including liability or warranties relating to merchantability, fitness for a particular purpose, or infringement of any intellectual property right. Micro Linear products are not designed for use in medical,
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