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AD9277 Datasheet(PDF) 5 Page - Analog Devices

No. de pieza AD9277
Descripción Electrónicos  Octal LNA/VGA/AAF/14-Bit ADC and CW I/Q Demodulator
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Fabricante Electrónico  AD [Analog Devices]
Página de inicio  http://www.analog.com
Logo AD - Analog Devices

AD9277 Datasheet(HTML) 5 Page - Analog Devices

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AD9277
Rev. 0 | Page 5 of 48
Parameter1
Test Conditions/Comments
Min
Typ
Max
Unit
Noise Figure
GAIN+ = 1.6 V, RS = 50 Ω
Active Termination Matched
LNA gain = 15.6 dB, RFB = 200 Ω
7.5
dB
LNA gain = 17.9 dB, RFB = 250 Ω
6.2
dB
LNA gain = 21.3 dB, RFB = 350 Ω
4.5
dB
Unterminated
LNA gain = 15.6 dB, RFB = ∞
4.6
dB
LNA gain = 17.9 dB, RFB = ∞
3.6
dB
LNA gain = 21.3 dB, RFB = ∞
2.8
dB
Correlated Noise Ratio
No signal, correlated/uncorrelated
−30
dB
Output Offset
−110
+110
LSB
Signal-to-Noise Ratio (SNR)
fIN = 5 MHz at −10 dBFS, GAIN+ = 0 V
67.5
dBFS
fIN = 5 MHz at −1 dBFS, GAIN+ = 1.6 V
59
dBFS
Harmonic Distortion
Second Harmonic
fIN = 5 MHz at −10 dBFS, GAIN+ = 0 V
−65
dBc
fIN = 5 MHz at −1 dBFS, GAIN+ = 1.6 V
−70
dBc
Third Harmonic
fIN = 5 MHz at −10 dBFS, GAIN+ = 0 V
−72
dBc
fIN = 5 MHz at −1 dBFS, GAIN+ = 1.6 V
−60
dBc
Two-Tone Intermodulation (IMD3)
fRF1 = 5.015 MHz, fRF2 = 5.020 MHz,
ARF1 = 0 dB, ARF2 = −20 dB, GAIN+ = 1.6 V,
IMD3 relative to ARF2
−55
dBc
Channel-to-Channel Crosstalk
fIN = 5 MHz at −1 dBFS
−70
dB
Overrange condition2
−65
dB
Channel-to-Channel Delay
Variation
Full TGC path, fIN = 5 MHz, GAIN+ = 0 V to 1.6 V
0.3
Degrees
PGA Gain
Differential input to differential output
21/24/27/30
dB
GAIN ACCURACY
25°C
Gain Law Conformance Error
0 < GAIN+ < 0.16 V
1.5
dB
0.16 V < GAIN+ < 1.44 V
−1.5
+1.5
dB
1.44 V < GAIN+ < 1.6 V
−2.5
dB
Linear Gain Error
GAIN+ = 0.8 V, normalized for ideal AAF loss
−1.5
+1.5
dB
Channel-to-Channel Matching
0.16 V < GAIN+ < 1.44 V
0.1
dB
GAIN CONTROL INTERFACE
Normal Operating Range
0
1.6
V
Gain Range
GAIN+ = 0 V to 1.6 V
−42
0
dB
Scale Factor
28.5
dB/V
Response Time
42 dB change
750
ns
GAIN+ Impedance
Single-ended
10
GAIN− Impedance
Single-ended
70
CW DOPPLER MODE
LO Frequency
fLO = f4LO/4
1
10
MHz
Phase Increment
Per channel
22.5
Degrees
Output DC Bias (Single-Ended)
CWI+, CWI−, CWQ+, CWQ−
1.5
V
Maximum Output Swing
Per CWI+, CWI−, CWQ+, CWQ−, per channel
enabled
±1.25
mA
Transconductance (Differential)
Demodulated IOUT/VIN, each I or Q output
LNA gain = 15.6 dB
1.8
mA/V
LNA gain = 17.9 dB
2.4
mA/V
LNA gain = 21.3 dB
3.5
mA/V
Input-Referred Noise Voltage
RS = 0 Ω, RFB = ∞
LNA gain = 15.6 dB
1.5
nV/√Hz
LNA gain = 17.9 dB
1.4
nV/√Hz
LNA gain = 21.3 dB
1.3
nV/√Hz


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