LMX5251 Datasheet, PDF (1/40 Pages) Texas Instruments – LMX5251 Bluetooth™ CMOS Radio

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LMX5251
SNOSCW3A – FEBRUARY 2004 – REVISED APRIL 2013
LMX5251 Bluetooth™ CMOS Radio
Check for Samples: LMX5251
FEATURES
1
•2 Bluetooth Version 1.1 Qualified
• Flexible Radio Frequency (RF) to Baseband
(BB) Interface
• LOW POWER
– Low Current Consumption
– Power Management Control Functions
• HIGH PERFORMANCE
– < -82 dBm Sensitivity
– Class 2/3 Operation
– ± 1/12 Bit Sampling Resolution
– Closed LoopM ΔΣ Modulation
• HIGH INTEGRATION
– Low IF (Intermediate Frequency)
Architecture with Digital Demodulation
– Integrated Radio Frequency Voltage
Controlled Oscillator (RFVCO)
– Dual on-chip Voltage Regulators:)
– Input Voltages 2.85V–3.6V
– Output Nominally 2.5VM
– 48-pin WQFN (Thin Quad Flatpack No lead)
Package
– No Pb Leadframe – LMX5251SQ NOPB
APPLICATIONS
• Bluetooth Compatible Interface Devices
• Cellular and Cordless Phones, PDAs
• Desktop and Laptop PCs, Printers, Scanners
• Other Wireless-Interfaced Appliances
BLOCK DIAGRAM
RF_PORT_RX
X
LNA
X
Complex Filter
RF_P O RT_TX _A
PA
RF_P O RT_TX _B
Loop
Filter
FM
Discriminator
Delta
Sigma
N/(N+1)
Charge
Pump
-
Digital
Interface
&
Control
Unit
XTAL
Oscillator &
Baseband
PLL
2.5V
Regulator
Digital
2.5V
Regulator
Analog
CE
RESET#
CCB_CLOCK
CCB_LATCH
CCB_DATA
BBP_CLOCK
TX_RX_SYNC
TX_RX_DATA
TR_SWITCH_P
TR_SWITCH_N
GPO1
GPO2
XTAL_G
XTAL_D
VDD_DIG_PWR_D#
VDD_DIG_IN
V DD_DIG_O UT
VDD_ANA_IN
VDD_ANA_OUT
GROUND PAD
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Bluetooth is a trademark of Bluetooth Sig, Inc.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2004–2013, Texas Instruments Incorporated