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AD9670 Datasheet(PDF) 16 Page - Analog Devices

Part # AD9670
Description  Octal Ultrasound AFE with Digital Demodulator
PDF  53 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD9670 Datasheet(HTML) 16 Page - Analog Devices

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Data Sheet
AD9670
Rev. A | Page 15 of 52
TYPICAL PERFORMANCE CHARACTERISTICS
TGC MODE CHARACTERISTICS
Mode I = fSAMPLE = 40 MSPS, fIN = 5 MHz, LO band mode, RS = 50 Ω, RFB = ∞ (unterminated), LNA gain = 21.6 dB, LNA bias = midhigh,
PGA gain = 27 dB, VGAIN = (GAIN+) − (GAIN−) = 1.6 V, antialiasing filter LPF cutoff = fSAMPLE /3, HPF cutoff = LPF cutoff/12.00 (default),
RF decimator bypassed, digital demodulator and baseband decimator bypassed, unless otherwise noted.
2.0
–2.0
–1.6
1.6
VGAIN (V)
–1.5
–1.0
–0.5
0
0.5
1.0
1.5
–1.2
–0.8
–0.4
0
0.4
0.8
1.2
0°C
85°C
25°C
Figure 9. Gain Error vs. VGAIN
25
20
15
10
5
0
GAIN ERROR (dB)
Figure 10. Gain Error Histogram, VGAIN = −1.28 V
35
30
25
20
15
10
5
0
GAIN ERROR (dB)
Figure 11. Gain Error Histogram, VGAIN = 0 V
25
20
15
10
5
0
GAIN ERROR (dB)
Figure 12. Gain Error Histogram, VGAIN = 1.28 V
20
15
10
5
0
CHANNEL-TO-CHANNEL GAIN MATCHING (dB)
Figure 13. Gain Matching Histogram, VGAIN = −1.2 V
20
15
10
5
0
CHANNEL-TO-CHANNEL GAIN MATCHING (dB)
Figure 14. Gain Matching Histogram, VGAIN = 1.2 V



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