TSH330 STMicroelectronics, TSH330 Datasheet - Page 16

• Manufacturer Part Number: TSH330
• Description: Low noise, very large bandwidth op-amp
• Manufacturer: STMicroelectronics

Specifications of TSH330

• Bandwidth: 1.1GHz (Gain=+2)
• Quiescent Current: 16.6 mA
• Slew Rate: 1800V/µs
• Input Noise: 1.3nV/√Hz
• Distortion: SFDR = -78dBc (10MHz, 2Vp-p)

TSH330
7 The Bias of an Inverting Amplifier
A resistance is necessary to achieve a good input biasing, such as resistance R shown in
The magnitude of this resistance is calculated by assuming the negative and positive input bias current.
The aim is to compensate for the offset bias current, which could affect the input offset voltage and the
output DC component. Assuming Ib-, Ib+, R
Figure 35. Compensation of the input bias current
16/19
Ib-
Ib-
R
R
in
in
Ib+
Ib+
in
R
R
R
, R
_
_
+
+
=
fb
and a zero volt output, the resistance R will be:
R
---------------------- -
R
R
R
in
in
Vcc+
Vcc+
Vcc-
Vcc-
fb
fb
+
R
R
fb
fb
Output
Output
The Bias of an Inverting Amplifier
Load
Load
Figure 35
.