Datasheet

AD9272
Rev. C | Page 6 of 44
AD9272-40 AD9272-65 AD9272-80
Parameter
1
Conditions Min Typ Max Min Typ Max Min Typ Max Unit
GAIN ACCURACY 25°C
Gain Law Confor-
mance Error
0 V < GAIN+ <
0.16 V
1.5 1.5 1.5 dB
0.16 V < GAIN+ <
1.44 V
−1.5 +1.5 −1.5 +1.5 −1.6 +1.6 dB
1.44 V < GAIN+ <
1.6 V
−2.5 −2.5 −2.5 dB
Linear Gain Error GAIN+ = 0.8 V,
normalized for
ideal AAF loss
−1.5 +1.5 −1.5 +1.5 −1.6 +1.6 dB
Channel-to-Channel
Matching
0.16 V < GAIN+ <
1.44 V
0.1 0.1 0.1 dB
GAIN CONTROL
INTERFACE
Normal Operating
Range
0 1.6 0 1.6 0 1.6 V
Gain Range GAIN+ = 0 V to
1.6 V
42 42 42 dB
Scale Factor 28.5 28.5 28.5 dB/V
Response Time 42 dB change 750 750 750 ns
Gain+ Impedance Single-ended 10 10 10 MΩ
Gain− Impedance Single-ended 70 70 70 kΩ
CW DOPPLER MODE
Transconductance
(differential)
LNA gain =
15.6 dB/
17.9 dB/
21.3 dB
5.4/7.3/10.9 5.4/7.3/10.9 5.4/7.3/10.9 mA/V
Output Level Range
(differential)
CW Doppler
output pins
1.5 3.6 1.5 3.6 1.5 3.6 V
Input-Referred
Noise Voltage
LNA gain =
15.6 dB/
17.9 dB/
21.3 dB,
R
S
= 0 Ω,
R
FB
= ∞,
R
L
= 675 Ω
2.35/1.82/1.31 2.35/1.82/1.31 2.35/1.82/1.31 nV/√Hz
Input-Referred
Dynamic Range
LNA gain =
15.6 dB/
17.9 dB/
21.3 dB,
R
S
= 0 Ω,
R
FB
= ∞
161/161/160 161/161/160 161/161/160 dBFS/√Hz
Two-Tone IMD3
(2 × F1 − F2)
Distortion
f
IN1
= 5.0 MHz at
−1 dBFS (FS at LNA
input),
f
IN2
= 5.01 MHz at
−21 dBFS (FS at
LNA input),
LNA gain = 21.3 dB
−70 −70 −70 dBc
Output DC Bias
(single-ended)
Per channel 2.4 2.4 2.4 mA
Maximum Output
Swing (single-
ended)
Per channel ±2 ±2 ±2 mA p-p
POWER SUPPLY
AVDD1 1.7 1.8 1.9 1.7 1.8 1.9 1.7 1.8 1.9 V
AVDD2 2.7 3.0 3.6 2.7 3.0 3.6 2.7 3.0 3.6 V
DRVDD 1.7 1.8 1.9 1.7 1.8 1.9 1.7 1.8 1.9 V