ad6402 Analog Devices, Inc., ad6402 Datasheet
ad6402
Available stocks
Related parts for ad6402
ad6402 Summary of contents
Page 1
... APPLICATIONS DECT/PWT/WLAN TDMA FM/FSK Systems GENERAL DESCRIPTION The AD6402 is a complete transceiver subsystem for use in high bit rate radio systems employing FM or FSK modulation optimized for use in time domain multiple access (TDMA) systems with communications rates of approximately 1 MBPS. The AD6402 integrates key functions, including VCOs and a low drop-out voltage regulator ...
Page 2
... MHz 4.7 MHz 6.0 MHz 150 150 LOAD = 30 pF LOAD = 300 LOAD = 30 pF LOAD = 30 pF LOAD Steady State = 100 nF LOAD at 2. –2– AD6402ARS Min Typ Max 20.736 –80 = 150 –85 – 1.2 1.55 –200 +200 200 0.2 V – ...
Page 3
... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD6402 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...
Page 4
... RF VCO can be optimized for tuning range, and second, feedback from the PA at will not couple into the modulating circuit to cause spurious responses. All key sections of the AD6402 may be powered up or down as necessary to minimize power consumption and maximize battery life. –4– ...
Page 5
... OFF The AD6402 has six operating modes: SLEEP, STANDBY, RXLOCK, RXDMOD, TRANSMIT and RXLOCKP. These are summarized in Table I. The blocks referred to in Table I are shown also in Figure 4. These modes are described as follows: SLEEP: The entire device is shut down. STANDBY: All functions except the regulator are shut down ...
Page 6
... QPSK signal will depend on factors such as bit rate, modulation index and BT employed. Figure 4 shows the RSSI response to a DECT signal at the IF port. It can be seen from the plot that the AD6402 can detect signals below –85 dBm and continues to detect linearly up to and above –5 dBm. ...
Page 7
... TxBB filter is user configurable. In the above application, the filter is implemented to remove images generated by ROM DAC baseband signal generators. Other implementations are possible including passive pulse shaping circuits which elimi- nate the need for such filtering. –7– AD6402 C71 1nF R8 C4 4.7k 3 ...
Page 8
... AD6402 EVALUATION BOARD An evaluation board is available for the AD6402. This board facilitates test and measurement of the subsystem. Parameters such as sensitivity, ACI, CCI, demodulator gain, demodulator offset, etc., can be quickly evaluated using this board. Contact PLLOUT 18 17 MODIN DOUT MODOUT ...