Datasheet

AD9271
Rev. B | Page 5 of 60
AD9271-25 AD9271-40 AD9271-50
Parameter
1
Conditions Min Typ Max Min Typ Max Min Typ Max Unit
Harmonic Distortion
Second Harmonic
f
IN
= 5 MHz
at −7 dBFS
V
GAIN
= 0 V −73 −71 −71 dBFS
Second Harmonic
f
IN
= 5 MHz
at −1 dBFS
V
GAIN
= 1 V −80 −72 −68 dBFS
Third Harmonic
f
IN
= 5 MHz
at −7 dBFS
V
GAIN
= 0 V −81 −77 −74 dBFS
Third Harmonic
f
IN
= 5 MHz
at −1 dBFS
V
GAIN
= 1 V −65 −63 −66 dBFS
Two-Tone IMD3
(2 × F1 − F2)
Distortion
f
IN1
= 5.0 MHz
at −7 dBFS,
f
IN2
= 6.0 MHz
at −7 dBFS
V
GAIN
= 1 V −54.6 −63.4 −68.5 dBc
Channel-to-Channel
Crosstalk
−70 −70 −70 dB
Channel-to-Channel
Crosstalk (Over-
range Condition)
3
−70 −70 −70 dB
Overload Recovery Full TGC path,
f
IN
= 1 MHz to 10 MHz,
gain = 0 V to 1 V
5 5 5 Degrees
GAIN ACCURACY 25°C
Gain Law Confor-
mance Error
0 < V
GAIN
< 0.1 V +0.8 +0.8 +0.8 dB
0.1 V < V
GAIN
< 0.9 V −1.2 +1.2 −1.2 +1.2 −1.2 +1.2 dB
0.9 V < V
GAIN
< 1 V −1.2 −1.2 −1.2 dB
Linear Gain Error V
GAIN
= 0.5 V,
normalized for ideal
AAF loss
−1.3 +1.3 −1.3 +1.3 −1.3 +1.3 dB
Channel-to-Channel
Matching
0.1 V < V
GAIN
< 0.9 V 0.2 0.2 0.2 dB
GAIN CONTROL
INTERFACE
Normal Operating
Range
0 1 0 1 0 1 V
Gain Range 0 V to 1 V, normalized
for ideal AAF loss
10 to 40 10 to 40 10 to 40 dB
Scale Factor 31.6 31.6 31.6 dB/V
Response Time 30 dB change 350 350 350 ns
CW DOPPLER MODE
Transconductance LNA gain = 5/6/8 10/12/16 10/12/16 10/12/16 mA/V
Common Mode CW Doppler
output pins
1.5 3.6 1.5 3.6 1.5 3.6 V
Input-Referred Noise
Voltage
LNA gain = 5/6/8,
R
S
= 0 Ω, RFB = ∞
1.8 /1.7/1.5 1.7 /1.5/1.4 1.7 /1.5/1.3 nV/√Hz
Output DC Bias Per channel 2.4 2.4 2.4 mA
Maximum Output
Swing
Per channel ±2 ±2 ±2 mA p-p