AD9272 Analog Devices, AD9272 Datasheet - Page 15

• Manufacturer Part Number: AD9272
• Description: Octal LNA/VGA/AAF/ADC and Crosspoint Switch
• Manufacturer: Analog Devices

Specifications of AD9272

• Resolution (bits): 12bit
• # Chan: 8
• Sample Rate: 80MSPS
• Interface: LVDS,Ser
• Analog Input Type: SE-Uni
• Ain Range: 367 mV p-p,550 mV p-p,733 mV p-p
• Adc Architecture: Pipelined
• Pkg Type: QFP

TYPICAL PERFORMANCE CHARACTERISTICS
f
cutoff/20.7 (default), unless otherwise noted.
SAMPLE
–0.5
–1.0
–1.5
–2.0
= 40 MSPS, f
25
20
15
10
14
12
10
2.0
1.5
1.0
0.5
5
0
8
6
4
2
0
0
Figure 5. Gain Error vs. GAIN+ at Three Temperatures
0
Figure 6. Gain Error Histogram, GAIN+ = 0.16 V
Figure 7. Gain Error Histogram, GAIN+ = 0.8 V
0.2
IN
= 5 MHz, R
0.4
GAIN ERROR (dB)
GAIN ERROR (dB)
0.6
GAIN+ (V)
S
0.8
= 50 Ω, LNA gain = 21.3 dB, LNA bias = high, PGA gain = 27 dB, AAF LPF cutoff = f
+25°C
+85°C
–40°C
1.0
1.2
1.4
1.6
Rev. C | Page 15 of 44
25
20
15
10
25
20
15
10
25
20
15
10
5
0
5
0
5
0
–1.25 –1.00 –0.75 –0.50 –0.25
–1.25 –1.00 –0.75 –0.50 –0.25
Figure 10. Gain Match Histogram, GAIN+ = 1.3 V
Figure 9. Gain Match Histogram, GAIN+ = 0.3 V
Figure 8. Gain Error Histogram, GAIN+ = 1.44 V
CHANNEL-TO-CHANNEL GAIN MATCHING (dB)
CHANNEL-TO-CHANNEL GAIN MATCHING (dB)
GAIN ERROR (dB)
0
0
0.25 0.50 0.75 1.00 1.25
0.25 0.50 0.75 1.00 1.25
SAMPLE
/4.5, HPF = LPF
AD9272