INA103 Datasheet, PDF (12/12 Pages) Burr-Brown (TI) – Low Noise, Low Distortion INSTRUMENTATION AMPLIFIER

1
cm 3
2
6.8kΩ
6.8kΩ
47µF/63V
+48V
+
2.2kΩ
Phantom
Power
240Ω
47kΩ
47µF/63V
+
2.2kΩ
240Ω
16
15
20dB
10Ω
Pad
13
Gain
Adjust
1kΩ ¹⁴
6
2
1
20dB
Pad
INA103
FIGURE 12. Microphone Preamplifier with Provision for Phantom Power Microphones.
11 ₁₀
7
1µF
V_OUT
100kΩ
–
OPA627 ⁺
Output offset voltage
control loop.
∆V_IN
16
15
10kΩ
13
14
6
10kΩ
2
1
12
INA103
5
11
10
7
10kΩ
V_OUT
10kΩ
100Ω
OPA602
FIGURE 13. Instrumentation Amplifier with Shield Driver.
Shield driver minimizes degradation of CMR due
to distributed capacitance on the input lines.
∆V_IN
–
16
+ _OPA627
15
13
14
6
2
1
–
+ _OPA627
FIGURE 14. Gain-of-100 INA103 with FET Buffers.
INA103
11
10
7
V _OUT = 100 ∆V_IN
Gain = 100V/V
(40dB)
®
INA103
12