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BK3266SO16A Datasheet(PDF) 13 Page - Beken Corporation |
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BK3266SO16A Datasheet(HTML) 13 Page - Beken Corporation |
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13 / 28 page  BK3266 Datasheet v 0.5 © 2017 Beken Corporation Proprietary and Confidential Page 13 of 28 on-chip balun which transforms the single-ended RF signal from the antenna through pin, RFP_BT, into an internal differential balanced signal for the low noise amplifier (LNA). On the transmit side, the differential outputs of the power amplifier (PA) are combined and transformed to a single-ended output using the same on-chip balun thus enabling only one RF pin connection to the antenna for both transmit and receive operations. The device is able to output +8 dBm of transmit output power allowing users to develop a class 2 (+4 dBm) device with small printed circuit board (PCB) antenna. The frequency synthesizer is fully integrated and does not require any external components. 3.4. Bluetooth Baseband The BK3266 Bluetooth baseband implements the Bluetooth version 4.2 Enhanced Data Rate (EDR) modem providing Basic Data Rate (BDR) 1 Mbps as well as the enhanced 2 Mbps, and 3 Mbps data rates. Data Rate Modulation Bits/Symbol BDR: 1 Mbps GFSK 1 EDR: 2 Mbps π/4 DQPSK 2 EDR: 3 Mbps 8 DPSK 3 Table 4. BK3266 Bluetooth Modulation Formats The Bluetooth baseband utilizes a combination of both hardware blocks and firmware for the frequency hopping sequence generator, access code generation, detection, and correlation, encryption and decryption for security, forward error correction, 16-bit CRC, packet construction, and Bluetooth clocks and timers to optimize for power consumption and user programmability. 3.5. Audio Peripherals The BK3266 comes with a rich set of audio peripherals to enhance the Bluetooth listening experience. The chip includes a 5-band digital equalizer, 96 dB signal- to-noise ratio (SNR) stereo analog-to-digital converter (ADC) and digital-to- analog converter (DAC), microphone input amplifier and bias, line-in input, and stereo audio left and right (L/R) outputs. 3.5.1. 5 – Band Digital Equalizer A dedicated 5-band digital equalizer is implemented prior to digital-to-analog conversion to give users the option of customizing the frequency response of the audio output. The equalizer is implemented in hardware to reduce overall chip power consumption. The 5-band equalizer is easily configured using the BK3266 |
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