AFE5809_13 Datasheet, PDF (14/90 Pages) Texas Instruments – Fully Integrated, 8-Channel Ultrasound Analog Front End with Passive CW Mixer, and Digital I/Q Demodulator, 0.75 nV/rtHz, 14, 12-Bit, 65 MSPS, 158 mW/CH

AFE5809
SLOS738C – SEPTEMBER 2012 – REVISED JANUARY 2013
TYPICAL CHARACTERISTICS
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AVDD_5 V = 5 V, AVDD = 3.3 V, AVDD_ADC = 1.8 V, DVDD = 1.8 V, ac-coupled with 0.1 µF caps at INP and
15 nF caps at INM, No active termination, V_CNTL = 0 V, F_IN = 5 MHz, LNA = 18 dB, PGA = 24 dB, 14Bit, sample
rate = 65 MSPS, LPF Filter = 15 MHz, low noise mode, Single-ended V_CNTL mode, V_CNTLM = GND, ADC is
configured in internal reference mode, V_OUT = -1 dBFS, 500 Ω CW feedback resistor, CMOS 16X clock, digital
demodulator is disabled, at ambient temperature TA = +25°C, unless otherwise noted.
45
45
Low noise
40
Medium power
40
35
Low power
35
−40 deg C
25 deg C
85 deg C
30
30
25
25
20
20
15
15
10
10
5
5
0
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5
Vcntl (V)
Figure 3. Gain vs V_CNTL, LNA = 18 dB and PGA = 24 dB
0
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2
Vcntl (V)
Figure 4. Gain Variation vs Temperature, LNA = 18 dB and
PGA = 24 dB
9000
8000
7000
6000
5000
4000
3000
2000
1000
0
9000
8000
7000
6000
5000
4000
3000
2000
1000
0
Gain (dB)
G004
Figure
5.
Gain
Matching Histogram,
Channels)
V_CNTL
=
0.3
V
(34951
Gain (dB)
G005
Figure
6.
Gain
Matching Histogram,
Channels)
V_CNTL
=
0.6
V
(34951
8000
120
110
7000
100
6000
90
80
5000
70
4000
60
50
3000
40
2000
30
20
1000
10
0
0
Gain (dB)
G005
Figure
7.
Gain
Matching Histogram,
Channels)
V_CNTL
=
0.9
V
(34951
ADC Output
G058
Figure
8.
Output
Offset Histogram,
Channels)
V_CNTL
=
0
V
(1247
14
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