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AD8284WCSVZ Datasheet(PDF) 4 Page - Analog Devices |
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AD8284WCSVZ Datasheet(HTML) 4 Page - Analog Devices |
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4 / 29 page  Data Sheet AD8284 Rev. D | Page 3 of 28 SPECIFICATIONS AC SPECIFICATIONS AVDD18x = 1.8 V, AVDD33x = 3.3 V, DVDD18x = 1.8 V, DVDD33x = 3.3 V, 1.0 V internal ADC reference, fIN = 2.5 MHz, fS = 60 MSPS, RS = 50 Ω, LNA + PGA gain = 35 dB, LPF cutoff = fSAMPLECH/4, 12-bit operation, temperature = −40°C to +105°C, all specifications guaranteed by testing, unless otherwise noted. Table 2. Parameter1 Test Conditions/Comments Min Typ Max Unit ANALOG CHANNEL CHARACTERISTICS LNA, PGA, and AAF channel Gain Programmable 17/23/29/35 dB Gain Range 18 dB Gain Error −1.25 +1.25 dB Input Voltage Range2 Channel gain = 17 dB 0.283 V p-p Channel gain = 23 dB 0.142 V p-p Channel gain = 29 dB 0.071 V p-p Channel gain = 35 dB 0.036 V p-p Input Resistance 200 Ω input impedance 0.200 0.265 0.300 kΩ 200 kΩ input impedance 160 200 240 kΩ Input Capacitance2 7 pF Input Referred Voltage Noise2 Maximum gain at 1 MHz 1.85 nV/√Hz Minimum gain at 1 MHz 6.03 nV/√Hz Noise Figure2 Maximum gain, RS = 50 Ω, not terminated 7.1 dB Maximum gain, RS = RIN = 50 Ω 12.7 dB Output Offset Gain = 17 dB −60 +60 LSB Gain = 35 dB −250 +250 LSB AAF Low-Pass Filter Cutoff −3 dB, programmable 9.0 to 15.0 MHz Tolerance After filter autotune −10 ±5 +10 % AAF Attenuation in Stop Band2 Third-order elliptic filter 2× cutoff 30 dB 3× cutoff 40 dB Group Delay Variation2 Filter set at 9 MHz 400 ns 1 dB Compression2 Relative to output 11.9 dBm Saturation Flag Response Time Time between saturation event and saturation flag going high (1 dB overdrive) 30 100 ns Time between end of saturation event and saturation flag going low 25 40 ns Saturation Flag Accuracy Gain = 29 dB Off For PGA voltages below 2 V p-p 2 V p-p On For PGA voltages above 2.25 V p-p 2.25 V p-p Mux2 On Resistance 50 Ω Switching Time 200 ns POWER SUPPLY AVDD18x2 1.7 1.8 1.9 V AVDD33x2 3.1 3.3 3.5 V DVDD18x2 1.7 1.8 1.9 V DVDD33x2 3.1 3.3 3.5 V IAVDD18 fS = 60 MSPS 54 mA IAVDD33 fS = 60 MSPS 65 mA IDVDD18 fS = 60 MSPS 15 mA IDVDD33 fS = 60 MSPS 2 mA Total Power Dissipation No signal, typical supply voltage × maximum supply current; excludes output current 345 mW |
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