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| TDC1011_15 Datasheet, PDF (8/49 Pages) Texas Instruments – TDC1011 Single Channel Ultrasonic Sensing Analog Front End (AFE) for Level Sensing,Concentration Sensing Applications | |||
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TDC1011
SNAS662 â JULY 2015
6.8 Typical Characteristics
At TA = 25°C, unless otherwise noted.
500
400
300
200
100
0
±100
100
1k
VDD = VIO = 3.7V
10k
100k
Frequency (Hz)
Capacitive
Feedback Mode
500
400
300
200
100
0
1M
10M
C001
RL = 1kΩ
±100
100
1k
VDD = VIO = 3.7V
10k
100k
Frequency (Hz)
Gain of 21dB
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1M
10M
C002
RL = 1kΩ
Figure 2. LNA ZOUT vs Frequency
10
9
8
7
6
5
4
3
2
1
0
5k
VDD = VIO = 3.1V
50k
500k
Frequency (Hz)
Capacitive
Feedback Mode
2M
C013
RL = â
Figure 3. PGA ZOUT vs Frequency
10
9
8
7
6
5
4
3
2
1
0
5k
VDD = VIO = 3.7V
50k
Frequency (Hz)
Gain of 21dB
500k
2M
C014
RL = â
Figure 4. LNA Input-referred Noise vs Frequency
Figure 5. PGA Input-referred Noise vs Frequency
VDD = VIO = 3.7V
VIN = 100mV
Time (1 s/DIV)
Resistive Feedback
Mode
C005
RL = 1kΩ
fIN = 100kHz
VDD = VIO = 3.7V
VIN = 100mV
Time (1 s/DIV)
Gain of 21dB
C006
RL = 100kΩ
fIN = 100kHz
Figure 6. LNA Response
8
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Figure 7. PGA Response
Copyright © 2015, Texas Instruments Incorporated
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