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2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver
Bump Description (continued)
BUMP
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NAME
GNDRXLNA_B
RXINB-
TXRX
B5
TXOUT+
B1
TXOUT-
V CCTXMX
CLKOUT
GND_XTAL
GND_DIG
V CC_DIG
CPOUT-
GND
DIN
FUNCTION
Receiver B LNA Ground
Receiver B LNA Differential Input Minus. Input is internally DC-coupled.
Transmit/Receive Mode Enable Logic Input
Receiver and Transmitter Gain-Control Logic Input Bit 5
Power Amplifier Driver Differential Output Plus. The pin is biased at V CC /2 internally.
Receiver and Transmitter Gain-Control Logic Input Bit 1
Power Amplifier Driver Differential Output Minus. The pin is biased at V CC /2 internally.
Transmitter Upconverter Supply Voltage. Bypass with a 22pF capacitor as close as possible to the
pin.
Reference Clock Buffer Output
Crystal Oscillator Ground
PLL Digital Ground
PLL Digital Supply Voltage. Bypass with a 100nF capacitor as close as possible to the pin.
Differential Charge-Pump Output Minus. Connect the frequency synthesizer’s loop filter between
CPOUT+ and CPOUT- (see the Typical Operating Circuit ).
Ground. Connect to the PCB ground plane.
Data Logic Input of 4-Wire Serial Interface
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GND_PAD_BIAS Transmit Bias Ground
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XTAL1
RXHP
RXBBIA-
RXBBIA+
TXBBI+
TXBBQ+
V CCRXMX
RXINA-
RXINA+
B0
ENABLE
DOUT
RXBBIB-
RXBBQB-
RSSI
B7
V CCRXFL
TXBBI-
XTAL Input. AC-couple crystal to this analog pin.
Receiver I- and Q-Channel AC-Coupling Highpass Corner Frequency Selection Logic Input
Receiver A Baseband I-Channel Differential Output Minus
Receiver A Baseband I-Channel Differential Output Plus
Transmitter Baseband I-Channel Differential Input Plus
Transmitter Baseband Q-Channel Differential Input Plus
Receiver Downconverters Supply Voltage. Bypass with a 22pF capacitor as close as possible to the
pin.
Receiver A LNA Differential Input Minus. Input is internally DC-coupled.
Receiver A LNA Differential Input Plus. Input is internally DC-coupled.
Receiver and Transmitter Gain-Control Logic Input Bit 0
Transceiver Enable Logic Input
Data Logic Output of 4-Wire Serial Interface
Receiver B Baseband I-Channel Differential Output Minus
Receiver B Baseband Q-Channel Differential Output Minus
Receiver Signal Strength Output
Receiver Gain-Control Logic Input Bit 7
Receiver Baseband Filter Supply Voltage. Bypass with a 100nF capacitor as close as possible to
the pin.
Transmitter Baseband I-Channel Differential Input Minus
20
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