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| OPA2604_06 Datasheet, PDF (12/14 Pages) Burr-Brown (TI) – Dual FET-Input, Low Distortion OPERATIONAL AMPLIFIER | |||
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Piezoelectric
Transducer
100â¦
10kâ¦
12
OPA2604
G = 101
(40dB)
1Mâ¦*
* Provides input bias
current return path.
* C1 â
COUT
2Ï Rf fc
Rf = Internal feedback resistance = 1.5kâ¦
fc = Crossover frequency = 8MHz
10
PCM63 5
20-bit 6
D/A
Converter 9
C1*
12
OPA2604
VO = ±3Vp
To low-pass
filter.
FIGURE 7. High Impedance Amplifier.
FIGURE 8. Digital Audio DAC I-V Amplifier.
1/2 OPA2604
A2
1/2 OPA2604
A1
VIN
R2
R3
51â¦
i1
R1
VOUT = VIN (1 + R2/R1)
I2
R4
51â¦
IL = I1 + I2
VOUT
Load
FIGURE 9. Using the Dual OPA2604 Op Amp to Double the Output Current to a Load.
®
OPA2604
12
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