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OPA607 Datasheet(PDF) 23 Page - Texas Instruments

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No. de pieza OPA607
Descripción Electrónicos  OPAx607 50-MHz, Low-Power, Gain of 6-V/V Stable, Rail-to-Rail Output CMOS Operational Amplifier
PDF  43 Pages
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI - Texas Instruments

OPA607 Datasheet(HTML) 23 Page - Texas Instruments

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Frequency (Hz)
-30
-24
-18
-12
-6
0
6
12
18
1k
10k
100k
1M
10M
100M
Freq
Gain = 3 V/V with Noise Gain Shaping
Gain = 3 V/V without Noise Gain Shaping
Gain = 6 V/V
Figure 9-7. Small-Signal Frequency Response in
Gains of 3V/V (a) and 6V/V (b)
Frequency (Hz)
-30
-24
-18
-12
-6
0
6
12
18
24
30
1k
10k
100k
1M
10M
100M
OPA6
Without Noise Gain Shaping
With Noise Gain Shaping
Figure 9-8. Small-Signal Frequency Response of
Difference Amplifier (c) With and Without Noise
Gain Shaping
9.2.3 High-Input Impedance (Hi-Z), High-Gain Signal Front-End
+
±
+2.5V
9 NŸ
OPA607
2 NŸ
-2.5V
1.8 NŸ
300 Ÿ
SW
105 Ÿ
+
±
+2.5V
40 NŸ
OPA837
-2.5V
0.4 nF
0.4 nF
0.1
F
To ADC/FDA
Ultrasonic Sensor
100 NŸ
Figure 9-9. Hi-Z, High-Gain Front-End Circuit
9.2.3.1 Design Requirements
The objective is to design a high-input impedance, high-dynamic range, signal-conditioning front-end. An
example application for such a front-end circuit is the receive signal chain in an ultrasonic-based end equipment
(EE) such as fish finders, printers and flow meters. Table 9-2 lists the design requirements for this application.
Table 9-2. Design Parameters
PARAMETER
DESIGN REQUIREMENT
Amplifier supply
±2.5 V
Input signal frequency
200 kHz
Minimum voltage
300 µVrms
Minimum SNR at 300 µVrms
40 dB
www.ti.com
OPA607, OPA2607
SBOS981F – OCTOBER 2019 – REVISED SEPTEMBER 2020
Copyright © 2020 Texas Instruments Incorporated
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Product Folder Links: OPA607 OPA2607



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