Datasheet

AD9272
Rev. C | Page 5 of 44
AD9272-40 AD9272-65 AD9272-80
Parameter
1
Conditions Min Typ Max Min Typ Max Min Typ Max Unit
Group Delay
Variation
f = 1 MHz to
18 MHz,
GAIN+ = 0 V to
1.6 V
±2 ±2 ±2 ns
Input-Referred
Noise Voltage
LNA gain =
15.6 dB/
17.9 dB/
21.3 dB,
R
FB
= ∞
1.26/1.04/0.85 1.26/1.04/0.85 1.26/1.04/0.85 nV/√Hz
Noise Figure LNA gain =
15.6 dB/
17.9 dB/
21.3 dB
Active Termina-
tion Matched
R
S
= 50 Ω,
R
FB
= 200 Ω/
250 Ω/350 Ω
8.0/6.6/4.7 7.7/6.2/4.5 7.6/6.1/4.4 dB
Unterminated R
FB
= ∞ 4.7/3.7/2.8 4.6/3.6/2.8 4.5/3.6/2.7 dB
Correlated Noise
Ratio
No signal,
correlated/
uncorrelated
−30 −30 −30 dB
Output Offset −35 +35 −35 +35 −35 +35 LSB
Signal-to-Noise
Ratio (SNR)
f
IN
= 5 MHz at
−10 dBFS, GAIN+
= 0 V
65 64 63 dBFS
f
IN
= 5 MHz at
−1 dBFS, GAIN+ =
1.6 V
57 56 54.5 dBFS
Harmonic Distortion
Second
Harmonic
f
IN
= 5 MHz at
−10 dBFS, GAIN+
= 0 V
−62 −58 −55 dBc
f
IN
= 5 MHz at
−1 dBFS, GAIN+ =
1.6 V
−60 −61 −58 dBc
Third Harmonic f
IN
= 5 MHz at
−10 dBFS, GAIN+
= 0 V
−71 −60 −60 dBc
f
IN
= 5 MHz at
−1 dBFS, GAIN+ =
1.6 V
−57 −55 −56 dBc
Two-Tone IMD3
(2 × F1 − F2)
Distortion
f
IN1
= 5.0 MHz at
−1 dBFS,
f
IN2
= 5.01 MHz at
−21 dBFS, GAIN+
= 1.6 V,
LNA gain = 21.3 dB
−75 −75 −75 dBc
Channel-to-Channel
Crosstalk
f
IN1
= 5.0 MHz at −1
dBFS
−70 −70 −70 dB
Overrange
condition
4
−65 −65 −65 dB
Channel-to-Channel
Delay Variation
Full TGC path,
f
IN
= 5 MHz,
GAIN+ = 0 V to
1.6 V
0.3 0.3 0.3 Degrees
PGA GAIN Differential input
to differential
output
21/24/27/30 21/24/27/30 21/24/27/30 dB