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AD7002 数据表(PDF) 4 Page - Analog Devices |
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AD7002 数据表(HTML) 4 Page - Analog Devices |
4 / 16 page AD7002 –4– REV. B TERMINOLOGY Absolute Group Delay Absolute group delay is the rate of change of phase versus fre- quency, d θ/df. It is expressed in microseconds. Bias Offset Error This is the offset error (in LSBs) in the ADC section. Differential Nonlinearity This is the difference between the measured and the ideal 1 LSB change between any two adjacent codes in the DAC or ADC. Dynamic Range Dynamic Range is the ratio of the maximum output signal to the smallest output signal the converter can produce (1 LSB), ex- pressed logarithmically, in decibels (dB = 20log10 (ratio)). For an N-bit converter, the ratio is theoretically very nearly equal to 2 N (in dB, 20Nlog 10(2) = 6.02N). However, this theoretical value is degraded by converter noise and inaccuracies in the LSB weight. Full-Scale Accuracy This is the measure of the ADC full-scale error after the offset has been adjusted out. Gain Error This is a measure of the output error between an ideal DAC and the actual device output with all ls loaded after offset error has been adjusted out and is expressed in LSBs. In the AD7002, gain error is specified for the auxiliary section. Gain Matching Between Channels This is the gain matching between the ITx and QTx channel and is expressed in dBs. GMSK Spectrum Mask This is the combined output spectrum of the I and Q analog outputs when transmitting a random sequence of data bits on the AD7002 transmit channel. 100 200 250 400 600 1800 4300 –3 –32 –35 –63 –71 –71 –63 FREQUENCY – kHz –63 6500 AD7002 Transmit GMSK Spectrum Mask ABSOLUTE MAXIMUM RATINGS 1 (TA = +25°C unless otherwise noted) DVDD to AGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V AVDD to AGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V AGND to DGND . . . . . . . . . . . . . . . . . . . . –0.3 V to +0.3 V Digital Input Voltage to DGND . . . . –0.3 V to DVDD + 0.3 V Analog Input Voltage to AGND . . . . –0.3 V to AVDD + 0.3 V Input Current to Any Pin Except Supplies 2 . . . . . . . . ±10 mA Operating Temperature Range Industrial Plastic (A Version) . . . . . . . . . . . –40 °C to +85°C Storage Temperature Range . . . . . . . . . . . –65 °C to +150°C Lead Temperature (Soldering, 10 secs) . . . . . . . . . +300 °C Power Dissipation (Any Package) to +75 °C . . . . . . . 450 mW Derates Above +75 °C by . . . . . . . . . . . . . . . . . . . . 10 mW/°C NOTES 1Stresses above those listed under Absolute Maximum Ratings may cause perma- nent damage to the device. This is a stress rating only; functional operation of the device at those or any other conditions above those listed in the operational sections of this specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. 2Transient currents of up to 100 mA will not cause SCR latch-up. PIN DESCRIPTION AUX FLAG AUX LATCH AUX CLK AUX DATA MZERO NC Rx SLEEP1 TEST2 NC Rx SLEEP2 CAL Tx SLEEP Tx DATA CLK2 Tx CLK DV DGND NC CLK1 TEST1 NC NC 33 32 31 30 29 28 27 26 25 24 23 1 2 3 4 5 6 7 8 9 10 11 PIN 1 IDENTIFIER AD7002 PQFP TOP VIEW (Not to Scale) NC = NO CONNECT DD ORDERING GUIDE Temperature Package Package Model Range Description Option AD7002AS –40 °C to +85°C Plastic Quad Flatpack S-44 WARNING! ESD SENSITIVE DEVICE CAUTION 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 AD7002 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. |
类似零件编号 - AD7002 |
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类似说明 - AD7002 |
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