BCM4319 Preliminary Data Sheet
Receiver Path
Receiver Path
The BCM4319 has a wide dynamic range, direct conversion receiver. It employs high order, on-chip channel
filtering to ensure reliable operation in the noisy 2.4 GHz ISM band or the entire 5 GHz U-NII band. The excellent
noise figure of the receiver makes an external Low-Noise Amplifier (LNA) unnecessary.
Transmitter Path
In the transmit path, baseband data is modulated and upconverted to the 2.4 GHz ISM or 5 GHz U-NII bands,
respectively. The integrated linear on-chip PAs are capable of delivering a nominal output power of 20 dBm while
meeting the IEEE 802.11a and 802.11g specifications. The TX gain has a 32 dB range with a resolution of 0.25
dB.
Calibration
The BCM4319 features dynamic on-chip calibration, eliminating process variation across components. This
enables the BCM4319 to be used in high-volume applications because calibration routines are not required
during manufacturing testing. These calibration routines are performed periodically in the course of normal radio
operation. An example of this is automatic calibration of the baseband filters for optimum transmit and receive
performance.
Broadcom®
Single-Chip IEEE 802.11™ a/b/g/n MAC/Baseband/Radio
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April 2, 2014 • 4319-DS05-R
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