AFE5808 Datasheet, PDF (19/68 Pages) Texas Instruments – Fully Integrated, 8-Channel Ultrasound Analog Front End with Passive CW Mixer, 0.75nV/rtHz, 14/12-Bit, 65MSPS, 153mW/CH

AFE5808
www.ti.com
SLOS688C – SEPTEMBER 2010 – REVISED APRIL 2012
TYPICAL CHARACTERISTICS (continued)
PSMR vs SUPPLY FREQUENCY
3V PSRR vs SUPPLY FREQUENCY
−55
−20
Vcntl = 0
Vcntl = 0
Vcntl = 0.3
−30
Vcntl = 0.3
−60
Vcntl = 0.6
Vcntl = 0.6
Vcntl = 0.9
−40
Vcntl = 0.9
−65
−50
−70
−60
−70
−75
−80
−80
5 10
100
1000 2000
Supply frequency (kHz)
Figure 48. AVDD_5V Power Supply Modulation Ratio,
100mV_PP Supply Noise with Different Frequencies
−90
5 10
100
1000 2000
Supply frequency (kHz)
Figure 49S.uApVpDlyDNPooisweewr _{iSthupDpiflyfeRreenjet} cFtrieoqnuReantcioie,s100mV_PP
5V PSRR vs SUPPLY FREQUENCY
−20
Vcntl = 0
−30
Vcntl = 0.3
Vcntl = 0.6
−40
Vcntl = 0.9
−50
−60
−70
−80
−90
5 10
100
1000 2000
Supply frequency (kHz)
Figure 50. AVDD_5V Power Supply Rejection Ratio,
100mV_PP Supply Noise with Different Frequencies
20000.0
18000.0
16000.0
1.3
Output Code
1.2
Vcntl
1.1
1.0
14000.0
0.9
0.8
12000.0
0.7
10000.0
0.6
8000.0
0.5
0.4
6000.0
0.3
4000.0
0.2
0.1
2000.0
0.0
0.0
−0.1
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Time (µs)
Figure 51. V_CNTL Response Time, LNA = 18dB and
PGA = 24dB
20000.0
1.3
18000.0
16000.0
1.2
Output Code
1.1
Vcntl
1.0
14000.0
0.9
0.8
12000.0
0.7
10000.0
0.6
8000.0
0.5
0.4
6000.0
0.3
4000.0
0.2
0.1
2000.0
0.0
0.0
−0.1
0.0 0.2 0.5 0.8 1.0 1.2 1.5 1.8 2.0 2.2 2.5
Time (µs)
Figure 52. V_CNTL Response Time, LNA = 18dB and
PGA = 24dB
1.2
1.0
0.8
0.6
0.4
0.2
0.0
−0.2
−0.4
−0.6
−0.8
−1.0
−1.2
0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0
Time (µs)
Figure 53. Pulse Inversion Asymmetrical Positive Input
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